/* $NetBSD: vmstat.c,v 1.153 2006/10/17 15:13:08 christos Exp $ */ /*- * Copyright (c) 1998, 2000, 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation by: * - Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * - Simon Burge and Luke Mewburn of Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1980, 1986, 1991, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #ifndef lint __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ The Regents of the University of California. All rights reserved.\n"); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 3/1/95"; #else __RCSID("$NetBSD: vmstat.c,v 1.153 2006/10/17 15:13:08 christos Exp $"); #endif #endif /* not lint */ #define __POOL_EXPOSE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #undef n_hash #include #include #include #include #include #include #include #include #include #include "drvstats.h" /* * General namelist */ struct nlist namelist[] = { #define X_BOOTTIME 0 { .n_name = "_boottime" }, #define X_HZ 1 { .n_name = "_hz" }, #define X_STATHZ 2 { .n_name = "_stathz" }, #define X_NCHSTATS 3 { .n_name = "_nchstats" }, #define X_KMEMSTAT 4 { .n_name = "_kmemstatistics" }, #define X_KMEMBUCKETS 5 { .n_name = "_kmembuckets" }, #define X_ALLEVENTS 6 { .n_name = "_allevents" }, #define X_POOLHEAD 7 { .n_name = "_pool_head" }, #define X_UVMEXP 8 { .n_name = "_uvmexp" }, #define X_TIME_SECOND 9 { .n_name = "_time_second" }, #define X_TIME 10 { .n_name = "_time" }, #define X_NL_SIZE 11 { .n_name = NULL }, }; /* * Namelist for pre-evcnt interrupt counters. */ struct nlist intrnl[] = { #define X_INTRNAMES 0 { .n_name = "_intrnames" }, #define X_EINTRNAMES 1 { .n_name = "_eintrnames" }, #define X_INTRCNT 2 { .n_name = "_intrcnt" }, #define X_EINTRCNT 3 { .n_name = "_eintrcnt" }, #define X_INTRNL_SIZE 4 { .n_name = NULL }, }; /* * Namelist for hash statistics */ struct nlist hashnl[] = { #define X_NFSNODE 0 { .n_name = "_nfsnodehash" }, #define X_NFSNODETBL 1 { .n_name = "_nfsnodehashtbl" }, #define X_IHASH 2 { .n_name = "_ihash" }, #define X_IHASHTBL 3 { .n_name = "_ihashtbl" }, #define X_BUFHASH 4 { .n_name = "_bufhash" }, #define X_BUFHASHTBL 5 { .n_name = "_bufhashtbl" }, #define X_UIHASH 6 { .n_name = "_uihash" }, #define X_UIHASHTBL 7 { .n_name = "_uihashtbl" }, #define X_IFADDRHASH 8 { .n_name = "_in_ifaddrhash" }, #define X_IFADDRHASHTBL 9 { .n_name = "_in_ifaddrhashtbl" }, #define X_NCHASH 10 { .n_name = "_nchash" }, #define X_NCHASHTBL 11 { .n_name = "_nchashtbl" }, #define X_NCVHASH 12 { .n_name = "_ncvhash" }, #define X_NCVHASHTBL 13 { .n_name = "_ncvhashtbl" }, #define X_HASHNL_SIZE 14 /* must be last */ { .n_name = NULL }, }; /* * Namelist for UVM histories */ struct nlist histnl[] = { { .n_name = "_uvm_histories" }, #define X_UVM_HISTORIES 0 { .n_name = NULL }, }; #define KILO 1024 struct uvmexp uvmexp, ouvmexp; int ndrives; int winlines = 20; kvm_t *kd; #define FORKSTAT 1<<0 #define INTRSTAT 1<<1 #define MEMSTAT 1<<2 #define SUMSTAT 1<<3 #define EVCNTSTAT 1<<4 #define VMSTAT 1<<5 #define HISTLIST 1<<6 #define HISTDUMP 1<<7 #define HASHSTAT 1<<8 #define HASHLIST 1<<9 #define VMTOTAL 1<<10 /* * Print single word. `ovflow' is number of characters didn't fit * on the last word. `fmt' is a format string to print this word. * It must contain asterisk for field width. `width' is a width * occupied by this word. `fixed' is a number of constant chars in * `fmt'. `val' is a value to be printed using format string `fmt'. */ #define PRWORD(ovflw, fmt, width, fixed, val) do { \ (ovflw) += printf((fmt), \ (width) - (fixed) - (ovflw) > 0 ? \ (width) - (fixed) - (ovflw) : 0, \ (val)) - (width); \ if ((ovflw) < 0) \ (ovflw) = 0; \ } while (/* CONSTCOND */0) void cpustats(int *); void deref_kptr(const void *, void *, size_t, const char *); void drvstats(int *); void doevcnt(int verbose); void dohashstat(int, int, const char *); void dointr(int verbose); void domem(void); void dopool(int, int); void dopoolcache(struct pool *, int); void dosum(void); void dovmstat(struct timespec *, int); void print_total_hdr(void); void dovmtotal(struct timespec *, int); void kread(struct nlist *, int, void *, size_t); int kreadc(struct nlist *, int, void *, size_t); void needhdr(int); long getuptime(void); void printhdr(void); long pct(long, long); void usage(void); void doforkst(void); void hist_traverse(int, const char *); void hist_dodump(struct uvm_history *); int main(int, char **); char **choosedrives(char **); /* Namelist and memory file names. */ char *nlistf, *memf; /* allow old usage [vmstat 1] */ #define BACKWARD_COMPATIBILITY int main(int argc, char *argv[]) { int c, todo, verbose, wide; struct timespec interval; int reps; char errbuf[_POSIX2_LINE_MAX]; gid_t egid = getegid(); const char *histname, *hashname; histname = hashname = NULL; (void)setegid(getgid()); memf = nlistf = NULL; reps = todo = verbose = wide = 0; interval.tv_sec = 0; interval.tv_nsec = 0; while ((c = getopt(argc, argv, "c:efh:HilLM:mN:stu:UvWw:")) != -1) { switch (c) { case 'c': reps = atoi(optarg); break; case 'e': todo |= EVCNTSTAT; break; case 'f': todo |= FORKSTAT; break; case 'h': hashname = optarg; /* FALLTHROUGH */ case 'H': todo |= HASHSTAT; break; case 'i': todo |= INTRSTAT; break; case 'l': todo |= HISTLIST; break; case 'L': todo |= HASHLIST; break; case 'M': memf = optarg; break; case 'm': todo |= MEMSTAT; break; case 'N': nlistf = optarg; break; case 's': todo |= SUMSTAT; break; case 't': todo |= VMTOTAL; break; case 'u': histname = optarg; /* FALLTHROUGH */ case 'U': todo |= HISTDUMP; break; case 'v': verbose++; break; case 'W': wide++; break; case 'w': interval.tv_sec = atol(optarg); break; case '?': default: usage(); } } argc -= optind; argv += optind; if (todo == 0) todo = VMSTAT; /* * Discard setgid privileges. If not the running kernel, we toss * them away totally so that bad guys can't print interesting stuff * from kernel memory, otherwise switch back to kmem for the * duration of the kvm_openfiles() call. */ if (nlistf != NULL || memf != NULL) (void)setgid(getgid()); else (void)setegid(egid); kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); if (kd == NULL) errx(1, "kvm_openfiles: %s", errbuf); if (nlistf == NULL && memf == NULL) (void)setgid(getgid()); if ((c = kvm_nlist(kd, namelist)) != 0) { int doexit = 0; if (c == -1) errx(1, "kvm_nlist: %s %s", "namelist", kvm_geterr(kd)); for (c = 0; c < sizeof(namelist) / sizeof(namelist[0])-1; c++) if (namelist[c].n_type == 0 && c != X_TIME_SECOND && c != X_TIME) { if (doexit++ == 0) (void)fprintf(stderr, "vmstat: undefined symbols:"); (void)fprintf(stderr, " %s", namelist[c].n_name); } if (doexit) { (void)fputc('\n', stderr); exit(1); } } if (todo & INTRSTAT) (void) kvm_nlist(kd, intrnl); if ((c = kvm_nlist(kd, hashnl)) == -1 || c == X_HASHNL_SIZE) errx(1, "kvm_nlist: %s %s", "hashnl", kvm_geterr(kd)); if (kvm_nlist(kd, histnl) == -1) errx(1, "kvm_nlist: %s %s", "histnl", kvm_geterr(kd)); if (todo & VMSTAT) { struct winsize winsize; (void)drvinit(0);/* Initialize disk stats, no disks selected. */ (void)setgid(getgid()); /* don't need privs anymore */ argv = choosedrives(argv); /* Select disks. */ winsize.ws_row = 0; (void)ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize); if (winsize.ws_row > 0) winlines = winsize.ws_row; } #ifdef BACKWARD_COMPATIBILITY if (*argv) { interval.tv_sec = atol(*argv); if (*++argv) reps = atoi(*argv); } #endif if (interval.tv_sec) { if (!reps) reps = -1; } else if (reps) interval.tv_sec = 1; /* * Statistics dumping is incompatible with the default * VMSTAT/dovmstat() output. So perform the interval/reps handling * for it here. */ if ((todo & (VMSTAT|VMTOTAL)) == 0) { for (;;) { if (todo & (HISTLIST|HISTDUMP)) { if ((todo & (HISTLIST|HISTDUMP)) == (HISTLIST|HISTDUMP)) errx(1, "you may list or dump," " but not both!"); hist_traverse(todo, histname); (void)putchar('\n'); } if (todo & FORKSTAT) { doforkst(); (void)putchar('\n'); } if (todo & MEMSTAT) { domem(); dopool(verbose, wide); (void)putchar('\n'); } if (todo & SUMSTAT) { dosum(); (void)putchar('\n'); } if (todo & INTRSTAT) { dointr(verbose); (void)putchar('\n'); } if (todo & EVCNTSTAT) { doevcnt(verbose); (void)putchar('\n'); } if (todo & (HASHLIST|HASHSTAT)) { if ((todo & (HASHLIST|HASHSTAT)) == (HASHLIST|HASHSTAT)) errx(1, "you may list or display," " but not both!"); dohashstat(verbose, todo, hashname); (void)putchar('\n'); } if (reps >= 0 && --reps <=0) break; (void)nanosleep(&interval, NULL); } } else { if ((todo & (VMSTAT|VMTOTAL)) == (VMSTAT|VMTOTAL)) { errx(1, "you may not both do vmstat and vmtotal"); } if (todo & VMSTAT) dovmstat(&interval, reps); if (todo & VMTOTAL) dovmtotal(&interval, reps); } return 0; } char ** choosedrives(char **argv) { int i; /* * Choose drives to be displayed. Priority goes to (in order) drives * supplied as arguments, default drives. If everything isn't filled * in and there are drives not taken care of, display the first few * that fit. */ #define BACKWARD_COMPATIBILITY for (ndrives = 0; *argv; ++argv) { #ifdef BACKWARD_COMPATIBILITY if (isdigit((unsigned char)**argv)) break; #endif for (i = 0; i < ndrive; i++) { if (strcmp(dr_name[i], *argv)) continue; drv_select[i] = 1; ++ndrives; break; } } for (i = 0; i < ndrive && ndrives < 2; i++) { if (drv_select[i]) continue; drv_select[i] = 1; ++ndrives; } return (argv); } long getuptime(void) { static struct timeval boottime; struct timeval now; time_t uptime, nowsec; if (boottime.tv_sec == 0) kread(namelist, X_BOOTTIME, &boottime, sizeof(boottime)); if (kreadc(namelist, X_TIME_SECOND, &nowsec, sizeof(nowsec))) { /* * XXX this assignment dance can be removed once timeval tv_sec * is SUS mandated time_t */ now.tv_sec = nowsec; now.tv_usec = 0; } else { kread(namelist, X_TIME, &now, sizeof(now)); } uptime = now.tv_sec - boottime.tv_sec; if (uptime <= 0 || uptime > 60*60*24*365*10) errx(1, "time makes no sense; namelist must be wrong."); return (uptime); } int hz, hdrcnt; void print_total_hdr() { (void)printf("procs memory\n"); (void)printf("ru dw pw sl sw"); (void)printf(" total-v active-v active-r"); (void)printf(" vm-sh avm-sh rm-sh arm-sh free\n"); hdrcnt = winlines - 2; } void dovmtotal(struct timespec *interval, int reps) { struct vmtotal total; int mib[2]; size_t size; (void)signal(SIGCONT, needhdr); for (hdrcnt = 1;;) { if (!--hdrcnt) print_total_hdr(); if (memf != NULL) { (void)printf( "Unable to get vmtotals from crash dump.\n"); (void)memset(&total, 0, sizeof(total)); } else { size = sizeof(total); mib[0] = CTL_VM; mib[1] = VM_METER; if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { (void)printf("Can't get vmtotals: %s\n", strerror(errno)); (void)memset(&total, 0, sizeof(total)); } } (void)printf("%2d ", total.t_rq); (void)printf("%2d ", total.t_dw); (void)printf("%2d ", total.t_pw); (void)printf("%2d ", total.t_sl); (void)printf("%2d ", total.t_sw); (void)printf("%9d ", total.t_vm); (void)printf("%9d ", total.t_avm); (void)printf("%9d ", total.t_arm); (void)printf("%5d ", total.t_vmshr); (void)printf("%6d ", total.t_avmshr); (void)printf("%5d ", total.t_rmshr); (void)printf("%6d ", total.t_armshr); (void)printf("%5d", total.t_free); (void)putchar('\n'); (void)fflush(stdout); if (reps >= 0 && --reps <= 0) break; (void)nanosleep(interval, NULL); } } void dovmstat(struct timespec *interval, int reps) { struct vmtotal total; time_t uptime, halfuptime; int mib[2]; size_t size; int pagesize = getpagesize(); int ovflw; uptime = getuptime(); halfuptime = uptime / 2; (void)signal(SIGCONT, needhdr); if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) kread(namelist, X_STATHZ, &hz, sizeof(hz)); if (!hz) kread(namelist, X_HZ, &hz, sizeof(hz)); for (hdrcnt = 1;;) { if (!--hdrcnt) printhdr(); /* Read new disk statistics */ cpureadstats(); drvreadstats(); tkreadstats(); kread(namelist, X_UVMEXP, &uvmexp, sizeof(uvmexp)); if (memf != NULL) { /* * XXX Can't do this if we're reading a crash * XXX dump because they're lazily-calculated. */ (void)printf( "Unable to get vmtotals from crash dump.\n"); (void)memset(&total, 0, sizeof(total)); } else { size = sizeof(total); mib[0] = CTL_VM; mib[1] = VM_METER; if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { (void)printf("Can't get vmtotals: %s\n", strerror(errno)); (void)memset(&total, 0, sizeof(total)); } } ovflw = 0; PRWORD(ovflw, " %*d", 2, 1, total.t_rq - 1); PRWORD(ovflw, " %*d", 2, 1, total.t_dw + total.t_pw); PRWORD(ovflw, " %*d", 2, 1, total.t_sw); #define pgtok(a) (long)((a) * ((uint32_t)pagesize >> 10)) #define rate(x) (u_long)(((x) + halfuptime) / uptime) /* round */ PRWORD(ovflw, " %*ld", 7, 1, pgtok(total.t_avm)); PRWORD(ovflw, " %*ld", 7, 1, pgtok(total.t_free)); PRWORD(ovflw, " %*ld", 5, 1, rate(uvmexp.faults - ouvmexp.faults)); PRWORD(ovflw, " %*ld", 4, 1, rate(uvmexp.pdreact - ouvmexp.pdreact)); PRWORD(ovflw, " %*ld", 4, 1, rate(uvmexp.pageins - ouvmexp.pageins)); PRWORD(ovflw, " %*ld", 5, 1, rate(uvmexp.pgswapout - ouvmexp.pgswapout)); PRWORD(ovflw, " %*ld", 5, 1, rate(uvmexp.pdfreed - ouvmexp.pdfreed)); PRWORD(ovflw, " %*ld", 6, 2, rate(uvmexp.pdscans - ouvmexp.pdscans)); drvstats(&ovflw); PRWORD(ovflw, " %*ld", 5, 1, rate(uvmexp.intrs - ouvmexp.intrs)); PRWORD(ovflw, " %*ld", 5, 1, rate(uvmexp.syscalls - ouvmexp.syscalls)); PRWORD(ovflw, " %*ld", 4, 1, rate(uvmexp.swtch - ouvmexp.swtch)); cpustats(&ovflw); (void)putchar('\n'); (void)fflush(stdout); if (reps >= 0 && --reps <= 0) break; ouvmexp = uvmexp; uptime = interval->tv_sec; /* * We round upward to avoid losing low-frequency events * (i.e., >= 1 per interval but < 1 per second). */ halfuptime = uptime == 1 ? 0 : (uptime + 1) / 2; (void)nanosleep(interval, NULL); } } void printhdr(void) { int i; (void)printf(" procs memory page%*s", 23, ""); if (ndrives > 0) (void)printf("%s %*sfaults cpu\n", ((ndrives > 1) ? "disks" : "disk"), ((ndrives > 1) ? ndrives * 3 - 4 : 0), ""); else (void)printf("%*s faults cpu\n", ndrives * 3, ""); (void)printf(" r b w avm fre flt re pi po fr sr "); for (i = 0; i < ndrive; i++) if (drv_select[i]) (void)printf("%c%c ", dr_name[i][0], dr_name[i][strlen(dr_name[i]) - 1]); (void)printf(" in sy cs us sy id\n"); hdrcnt = winlines - 2; } /* * Force a header to be prepended to the next output. */ void /*ARGSUSED*/ needhdr(int dummy) { hdrcnt = 1; } long pct(long top, long bot) { long ans; if (bot == 0) return (0); ans = (long)((quad_t)top * 100 / bot); return (ans); } #define PCT(top, bot) (int)pct((long)(top), (long)(bot)) void dosum(void) { struct nchstats nchstats; u_long nchtotal; kread(namelist, X_UVMEXP, &uvmexp, sizeof(uvmexp)); (void)printf("%9u bytes per page\n", uvmexp.pagesize); (void)printf("%9u page color%s\n", uvmexp.ncolors, uvmexp.ncolors == 1 ? "" : "s"); (void)printf("%9u pages managed\n", uvmexp.npages); (void)printf("%9u pages free\n", uvmexp.free); (void)printf("%9u pages paging\n", uvmexp.paging); (void)printf("%9u pages wired\n", uvmexp.wired); (void)printf("%9u zero pages\n", uvmexp.zeropages); (void)printf("%9u reserve pagedaemon pages\n", uvmexp.reserve_pagedaemon); (void)printf("%9u reserve kernel pages\n", uvmexp.reserve_kernel); (void)printf("%9u anonymous pages\n", uvmexp.anonpages); (void)printf("%9u cached file pages\n", uvmexp.filepages); (void)printf("%9u cached executable pages\n", uvmexp.execpages); (void)printf("%9u minimum free pages\n", uvmexp.freemin); (void)printf("%9u target free pages\n", uvmexp.freetarg); (void)printf("%9u maximum wired pages\n", uvmexp.wiredmax); (void)printf("%9u swap devices\n", uvmexp.nswapdev); (void)printf("%9u swap pages\n", uvmexp.swpages); (void)printf("%9u swap pages in use\n", uvmexp.swpginuse); (void)printf("%9u swap allocations\n", uvmexp.nswget); (void)printf("%9u total faults taken\n", uvmexp.faults); (void)printf("%9u traps\n", uvmexp.traps); (void)printf("%9u device interrupts\n", uvmexp.intrs); (void)printf("%9u CPU context switches\n", uvmexp.swtch); (void)printf("%9u software interrupts\n", uvmexp.softs); (void)printf("%9u system calls\n", uvmexp.syscalls); (void)printf("%9u pagein requests\n", uvmexp.pageins); (void)printf("%9u pageout requests\n", uvmexp.pdpageouts); (void)printf("%9u swap ins\n", uvmexp.swapins); (void)printf("%9u swap outs\n", uvmexp.swapouts); (void)printf("%9u pages swapped in\n", uvmexp.pgswapin); (void)printf("%9u pages swapped out\n", uvmexp.pgswapout); (void)printf("%9u forks total\n", uvmexp.forks); (void)printf("%9u forks blocked parent\n", uvmexp.forks_ppwait); (void)printf("%9u forks shared address space with parent\n", uvmexp.forks_sharevm); (void)printf("%9u pagealloc zero wanted and avail\n", uvmexp.pga_zerohit); (void)printf("%9u pagealloc zero wanted and not avail\n", uvmexp.pga_zeromiss); (void)printf("%9u aborts of idle page zeroing\n", uvmexp.zeroaborts); (void)printf("%9u pagealloc desired color avail\n", uvmexp.colorhit); (void)printf("%9u pagealloc desired color not avail\n", uvmexp.colormiss); (void)printf("%9u faults with no memory\n", uvmexp.fltnoram); (void)printf("%9u faults with no anons\n", uvmexp.fltnoanon); (void)printf("%9u faults had to wait on pages\n", uvmexp.fltpgwait); (void)printf("%9u faults found released page\n", uvmexp.fltpgrele); (void)printf("%9u faults relock (%u ok)\n", uvmexp.fltrelck, uvmexp.fltrelckok); (void)printf("%9u anon page faults\n", uvmexp.fltanget); (void)printf("%9u anon retry faults\n", uvmexp.fltanretry); (void)printf("%9u amap copy faults\n", uvmexp.fltamcopy); (void)printf("%9u neighbour anon page faults\n", uvmexp.fltnamap); (void)printf("%9u neighbour object page faults\n", uvmexp.fltnomap); (void)printf("%9u locked pager get faults\n", uvmexp.fltlget); (void)printf("%9u unlocked pager get faults\n", uvmexp.fltget); (void)printf("%9u anon faults\n", uvmexp.flt_anon); (void)printf("%9u anon copy on write faults\n", uvmexp.flt_acow); (void)printf("%9u object faults\n", uvmexp.flt_obj); (void)printf("%9u promote copy faults\n", uvmexp.flt_prcopy); (void)printf("%9u promote zero fill faults\n", uvmexp.flt_przero); (void)printf("%9u times daemon wokeup\n",uvmexp.pdwoke); (void)printf("%9u revolutions of the clock hand\n", uvmexp.pdrevs); (void)printf("%9u times daemon attempted swapout\n", uvmexp.pdswout); (void)printf("%9u pages freed by daemon\n", uvmexp.pdfreed); (void)printf("%9u pages scanned by daemon\n", uvmexp.pdscans); (void)printf("%9u anonymous pages scanned by daemon\n", uvmexp.pdanscan); (void)printf("%9u object pages scanned by daemon\n", uvmexp.pdobscan); (void)printf("%9u pages reactivated\n", uvmexp.pdreact); (void)printf("%9u pages found busy by daemon\n", uvmexp.pdbusy); (void)printf("%9u total pending pageouts\n", uvmexp.pdpending); (void)printf("%9u pages deactivated\n", uvmexp.pddeact); kread(namelist, X_NCHSTATS, &nchstats, sizeof(nchstats)); nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + nchstats.ncs_badhits + nchstats.ncs_falsehits + nchstats.ncs_miss + nchstats.ncs_long; (void)printf("%9lu total name lookups\n", nchtotal); (void)printf("%9lu good hits\n", nchstats.ncs_goodhits); (void)printf("%9lu negative hits\n", nchstats.ncs_neghits); (void)printf("%9lu bad hits\n", nchstats.ncs_badhits); (void)printf("%9lu false hits\n", nchstats.ncs_falsehits); (void)printf("%9lu miss\n", nchstats.ncs_miss); (void)printf("%9lu too long\n", nchstats.ncs_long); (void)printf("%9lu pass2 hits\n", nchstats.ncs_pass2); (void)printf("%9lu 2passes\n", nchstats.ncs_2passes); (void)printf( "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n", "", PCT(nchstats.ncs_goodhits, nchtotal), PCT(nchstats.ncs_neghits, nchtotal), PCT(nchstats.ncs_pass2, nchtotal)); (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", PCT(nchstats.ncs_badhits, nchtotal), PCT(nchstats.ncs_falsehits, nchtotal), PCT(nchstats.ncs_long, nchtotal)); } void doforkst(void) { kread(namelist, X_UVMEXP, &uvmexp, sizeof(uvmexp)); (void)printf("%u forks total\n", uvmexp.forks); (void)printf("%u forks blocked parent\n", uvmexp.forks_ppwait); (void)printf("%u forks shared address space with parent\n", uvmexp.forks_sharevm); } void drvstats(int *ovflwp) { int dn; double etime; int ovflw = *ovflwp; /* Calculate disk stat deltas. */ cpuswap(); drvswap(); tkswap(); etime = cur.cp_etime; for (dn = 0; dn < ndrive; ++dn) { if (!drv_select[dn]) continue; PRWORD(ovflw, " %*.0f", 3, 1, (cur.rxfer[dn] + cur.wxfer[dn]) / etime); } *ovflwp = ovflw; } void cpustats(int *ovflwp) { int state; double pcnt, total; double stat_us, stat_sy, stat_id; int ovflw = *ovflwp; total = 0; for (state = 0; state < CPUSTATES; ++state) total += cur.cp_time[state]; if (total) pcnt = 100 / total; else pcnt = 0; stat_us = (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * pcnt; stat_sy = (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * pcnt; stat_id = cur.cp_time[CP_IDLE] * pcnt; PRWORD(ovflw, " %*.0f", ((stat_sy >= 100) ? 2 : 3), 1, stat_us); PRWORD(ovflw, " %*.0f", ((stat_us >= 100 || stat_id >= 100) ? 2 : 3), 1, stat_sy); PRWORD(ovflw, " %*.0f", 3, 1, stat_id); *ovflwp = ovflw; } void dointr(int verbose) { unsigned long *intrcnt, *ointrcnt; unsigned long long inttotal, uptime; int nintr, inamlen; char *intrname, *ointrname; struct evcntlist allevents; struct evcnt evcnt, *evptr; char evgroup[EVCNT_STRING_MAX], evname[EVCNT_STRING_MAX]; inttotal = 0; uptime = getuptime(); (void)printf("%-34s %16s %8s\n", "interrupt", "total", "rate"); nintr = intrnl[X_EINTRCNT].n_value - intrnl[X_INTRCNT].n_value; inamlen = intrnl[X_EINTRNAMES].n_value - intrnl[X_INTRNAMES].n_value; if (nintr != 0 && inamlen != 0) { ointrcnt = intrcnt = malloc((size_t)nintr); ointrname = intrname = malloc((size_t)inamlen); if (intrcnt == NULL || intrname == NULL) errx(1, "%s", ""); kread(intrnl, X_INTRCNT, intrcnt, (size_t)nintr); kread(intrnl, X_INTRNAMES, intrname, (size_t)inamlen); nintr /= sizeof(long); while (--nintr >= 0) { if (*intrcnt || verbose) (void)printf("%-34s %16llu %8llu\n", intrname, (unsigned long long)*intrcnt, (unsigned long long) (*intrcnt / uptime)); intrname += strlen(intrname) + 1; inttotal += *intrcnt++; } free(ointrcnt); free(ointrname); } kread(namelist, X_ALLEVENTS, &allevents, sizeof allevents); evptr = TAILQ_FIRST(&allevents); while (evptr) { deref_kptr(evptr, &evcnt, sizeof(evcnt), "event chain trashed"); evptr = TAILQ_NEXT(&evcnt, ev_list); if (evcnt.ev_type != EVCNT_TYPE_INTR) continue; if (evcnt.ev_count == 0 && !verbose) continue; deref_kptr(evcnt.ev_group, evgroup, (size_t)evcnt.ev_grouplen + 1, "event chain trashed"); deref_kptr(evcnt.ev_name, evname, (size_t)evcnt.ev_namelen + 1, "event chain trashed"); (void)printf("%s %s%*s %16llu %8llu\n", evgroup, evname, 34 - (evcnt.ev_grouplen + 1 + evcnt.ev_namelen), "", (unsigned long long)evcnt.ev_count, (unsigned long long)(evcnt.ev_count / uptime)); inttotal += evcnt.ev_count++; } (void)printf("%-34s %16llu %8llu\n", "Total", inttotal, (unsigned long long)(inttotal / uptime)); } void doevcnt(int verbose) { static const char * evtypes [] = { "misc", "intr", "trap" }; unsigned long long uptime; struct evcntlist allevents; struct evcnt evcnt, *evptr; char evgroup[EVCNT_STRING_MAX], evname[EVCNT_STRING_MAX]; /* XXX should print type! */ uptime = getuptime(); (void)printf("%-34s %16s %8s %s\n", "event", "total", "rate", "type"); kread(namelist, X_ALLEVENTS, &allevents, sizeof allevents); evptr = TAILQ_FIRST(&allevents); while (evptr) { deref_kptr(evptr, &evcnt, sizeof(evcnt), "event chain trashed"); evptr = TAILQ_NEXT(&evcnt, ev_list); if (evcnt.ev_count == 0 && !verbose) continue; deref_kptr(evcnt.ev_group, evgroup, (size_t)evcnt.ev_grouplen + 1, "event chain trashed"); deref_kptr(evcnt.ev_name, evname, (size_t)evcnt.ev_namelen + 1, "event chain trashed"); (void)printf("%s %s%*s %16llu %8llu %s\n", evgroup, evname, 34 - (evcnt.ev_grouplen + 1 + evcnt.ev_namelen), "", (unsigned long long)evcnt.ev_count, (unsigned long long)(evcnt.ev_count / uptime), (evcnt.ev_type < sizeof(evtypes)/sizeof(evtypes[0]) ? evtypes[evcnt.ev_type] : "?")); } } static char memname[64]; void domem(void) { struct kmembuckets *kp; struct malloc_type ks, *ksp; int i, j; int len, size, first; long totuse = 0, totfree = 0, totreq = 0; struct kmembuckets buckets[MINBUCKET + 16]; kread(namelist, X_KMEMBUCKETS, buckets, sizeof(buckets)); for (first = 1, i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { if (kp->kb_calls == 0) continue; if (first) { (void)printf("Memory statistics by bucket size\n"); (void)printf( " Size In Use Free Requests HighWater Couldfree\n"); first = 0; } size = 1 << i; (void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size, kp->kb_total - kp->kb_totalfree, kp->kb_totalfree, kp->kb_calls, kp->kb_highwat, kp->kb_couldfree); totfree += size * kp->kb_totalfree; } /* * If kmem statistics are not being gathered by the kernel, * first will still be 1. */ if (first) { warnx("Kmem statistics are not being gathered by the kernel."); return; } (void)printf("\nMemory usage type by bucket size\n"); (void)printf(" Size Type(s)\n"); kp = &buckets[MINBUCKET]; for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { if (kp->kb_calls == 0) continue; first = 1; len = 8; for (kread(namelist, X_KMEMSTAT, &ksp, sizeof(ksp)); ksp != NULL; ksp = ks.ks_next) { deref_kptr(ksp, &ks, sizeof(ks), "malloc type"); if (ks.ks_calls == 0) continue; if ((ks.ks_size & j) == 0) continue; deref_kptr(ks.ks_shortdesc, memname, sizeof(memname), "malloc type name"); len += 2 + strlen(memname); if (first) (void)printf("%8d %s", j, memname); else (void)printf(","); if (len >= 80) { (void)printf("\n\t "); len = 10 + strlen(memname); } if (!first) (void)printf(" %s", memname); first = 0; } (void)putchar('\n'); } (void)printf( "\nMemory statistics by type Type Kern\n"); (void)printf( " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); for (kread(namelist, X_KMEMSTAT, &ksp, sizeof(ksp)); ksp != NULL; ksp = ks.ks_next) { deref_kptr(ksp, &ks, sizeof(ks), "malloc type"); if (ks.ks_calls == 0) continue; deref_kptr(ks.ks_shortdesc, memname, sizeof(memname), "malloc type name"); (void)printf("%14s%6ld%6ldK%7ldK%6ldK%10ld%5u%6u", memname, ks.ks_inuse, howmany(ks.ks_memuse, KILO), howmany(ks.ks_maxused, KILO), howmany(ks.ks_limit, KILO), ks.ks_calls, ks.ks_limblocks, ks.ks_mapblocks); first = 1; for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { if ((ks.ks_size & j) == 0) continue; if (first) (void)printf(" %d", j); else (void)printf(",%d", j); first = 0; } (void)printf("\n"); totuse += ks.ks_memuse; totreq += ks.ks_calls; } (void)printf("\nMemory totals: In Use Free Requests\n"); (void)printf(" %7ldK %6ldK %8ld\n\n", howmany(totuse, KILO), howmany(totfree, KILO), totreq); } void dopool(int verbose, int wide) { int first, ovflw; void *addr; long total, inuse, this_total, this_inuse; LIST_HEAD(,pool) pool_head; struct pool pool, *pp = &pool; struct pool_allocator pa; char name[32], maxp[32]; kread(namelist, X_POOLHEAD, &pool_head, sizeof(pool_head)); addr = LIST_FIRST(&pool_head); total = inuse = 0; for (first = 1; addr != NULL; addr = LIST_NEXT(pp, pr_poollist) ) { deref_kptr(addr, pp, sizeof(*pp), "pool chain trashed"); deref_kptr(pp->pr_alloc, &pa, sizeof(pa), "pool allocator trashed"); deref_kptr(pp->pr_wchan, name, sizeof(name), "pool wait channel trashed"); name[sizeof(name)-1] = '\0'; if (first) { (void)printf("Memory resource pool statistics\n"); (void)printf( "%-*s%*s%*s%5s%*s%s%s%*s%*s%6s%s%6s%6s%6s%5s%s%s\n", wide ? 16 : 11, "Name", wide ? 6 : 5, "Size", wide ? 12 : 9, "Requests", "Fail", wide ? 12 : 9, "Releases", wide ? " InUse" : "", wide ? " Avail" : "", wide ? 7 : 6, "Pgreq", wide ? 7 : 6, "Pgrel", "Npage", wide ? " PageSz" : "", "Hiwat", "Minpg", "Maxpg", "Idle", wide ? " Flags" : "", wide ? " Util" : ""); first = 0; } if (pp->pr_nget == 0 && !verbose) continue; if (pp->pr_maxpages == UINT_MAX) (void)snprintf(maxp, sizeof(maxp), "inf"); else (void)snprintf(maxp, sizeof(maxp), "%u", pp->pr_maxpages); ovflw = 0; PRWORD(ovflw, "%-*s", wide ? 16 : 11, 0, name); PRWORD(ovflw, " %*u", wide ? 6 : 5, 1, pp->pr_size); PRWORD(ovflw, " %*lu", wide ? 12 : 9, 1, pp->pr_nget); PRWORD(ovflw, " %*lu", 5, 1, pp->pr_nfail); PRWORD(ovflw, " %*lu", wide ? 12 : 9, 1, pp->pr_nput); if (wide) PRWORD(ovflw, " %*u", 7, 1, pp->pr_nout); if (wide) PRWORD(ovflw, " %*u", 6, 1, pp->pr_nitems); PRWORD(ovflw, " %*lu", wide ? 7 : 6, 1, pp->pr_npagealloc); PRWORD(ovflw, " %*lu", wide ? 7 : 6, 1, pp->pr_npagefree); PRWORD(ovflw, " %*u", 6, 1, pp->pr_npages); if (wide) PRWORD(ovflw, " %*u", 7, 1, pa.pa_pagesz); PRWORD(ovflw, " %*u", 6, 1, pp->pr_hiwat); PRWORD(ovflw, " %*u", 6, 1, pp->pr_minpages); PRWORD(ovflw, " %*s", 6, 1, maxp); PRWORD(ovflw, " %*lu", 5, 1, pp->pr_nidle); if (wide) PRWORD(ovflw, " 0x%0*x", 4, 1, pp->pr_flags | pp->pr_roflags); this_inuse = pp->pr_nout * pp->pr_size; this_total = pp->pr_npages * pa.pa_pagesz; if (pp->pr_roflags & PR_RECURSIVE) { /* * Don't count in-use memory, since it's part * of another pool and will be accounted for * there. */ total += (this_total - this_inuse); } else { inuse += this_inuse; total += this_total; } if (wide) { if (this_total == 0) (void)printf(" ---"); else (void)printf(" %5.1f%%", (100.0 * this_inuse) / this_total); } (void)printf("\n"); dopoolcache(pp, verbose); } inuse /= KILO; total /= KILO; (void)printf( "\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n", inuse, total, (100.0 * inuse) / total); } void dopoolcache(struct pool *pp, int verbose) { struct pool_cache pool_cache, *pc = &pool_cache; struct pool_cache_group pool_cache_group, *pcg = &pool_cache_group; void *addr, *pcg_addr; int i; if (verbose < 1) return; #define PR_GROUPLIST \ deref_kptr(pcg_addr, pcg, sizeof(*pcg), \ "pool cache group trashed"); \ (void)printf("\t\tgroup %p: avail %d\n", pcg_addr, \ pcg->pcg_avail); \ for (i = 0; i < PCG_NOBJECTS; i++) { \ if (pcg->pcg_objects[i].pcgo_pa != \ POOL_PADDR_INVALID) { \ (void)printf("\t\t\t%p, 0x%llx\n", \ pcg->pcg_objects[i].pcgo_va, \ (unsigned long long) \ pcg->pcg_objects[i].pcgo_pa); \ } else { \ (void)printf("\t\t\t%p\n", \ pcg->pcg_objects[i].pcgo_va); \ } \ } for (addr = LIST_FIRST(&pp->pr_cachelist); addr != NULL; addr = LIST_NEXT(pc, pc_poollist)) { deref_kptr(addr, pc, sizeof(*pc), "pool cache trashed"); (void)printf( "\t hits %lu misses %lu ngroups %lu nitems %lu\n", pc->pc_hits, pc->pc_misses, pc->pc_ngroups, pc->pc_nitems); if (verbose < 2) continue; (void)printf("\t full groups:\n"); for (pcg_addr = LIST_FIRST(&pc->pc_fullgroups); pcg_addr != NULL; pcg_addr = LIST_NEXT(pcg, pcg_list)) { PR_GROUPLIST; } (void)printf("\t partial groups:\n"); for (pcg_addr = LIST_FIRST(&pc->pc_partgroups); pcg_addr != NULL; pcg_addr = LIST_NEXT(pcg, pcg_list)) { PR_GROUPLIST; } (void)printf("\t empty groups:\n"); for (pcg_addr = LIST_FIRST(&pc->pc_emptygroups); pcg_addr != NULL; pcg_addr = LIST_NEXT(pcg, pcg_list)) { PR_GROUPLIST; } } #undef PR_GROUPLIST } enum hashtype { /* from */ HASH_LIST, HASH_TAILQ }; struct uidinfo { /* XXX: no kernel header file */ LIST_ENTRY(uidinfo) ui_hash; uid_t ui_uid; long ui_proccnt; }; struct kernel_hash { const char * description; /* description */ int hashsize; /* nlist index for hash size */ int hashtbl; /* nlist index for hash table */ enum hashtype type; /* type of hash table */ size_t offset; /* offset of {LIST,TAILQ}_NEXT */ } khashes[] = { { "buffer hash", X_BUFHASH, X_BUFHASHTBL, HASH_LIST, offsetof(struct buf, b_hash) }, { "inode cache (ihash)", X_IHASH, X_IHASHTBL, HASH_LIST, offsetof(struct inode, i_hash) }, { "ipv4 address -> interface hash", X_IFADDRHASH, X_IFADDRHASHTBL, HASH_LIST, offsetof(struct in_ifaddr, ia_hash), }, { "name cache hash", X_NCHASH, X_NCHASHTBL, HASH_LIST, offsetof(struct namecache, nc_hash), }, { "name cache directory hash", X_NCVHASH, X_NCVHASHTBL, HASH_LIST, offsetof(struct namecache, nc_vhash), }, { "nfs client node cache", X_NFSNODE, X_NFSNODETBL, HASH_LIST, offsetof(struct nfsnode, n_hash) }, { "user info (uid -> used processes) hash", X_UIHASH, X_UIHASHTBL, HASH_LIST, offsetof(struct uidinfo, ui_hash), }, { NULL, -1, -1, 0, 0, } }; void dohashstat(int verbose, int todo, const char *hashname) { LIST_HEAD(, generic) *hashtbl_list; TAILQ_HEAD(, generic) *hashtbl_tailq; struct kernel_hash *curhash; void *hashaddr, *hashbuf, *nhashbuf, *nextaddr; size_t elemsize, hashbufsize, thissize; u_long hashsize; int i, used, items, chain, maxchain; hashbuf = NULL; hashbufsize = 0; if (todo & HASHLIST) { (void)printf("Supported hashes:\n"); for (curhash = khashes; curhash->description; curhash++) { if (hashnl[curhash->hashsize].n_value == 0 || hashnl[curhash->hashtbl].n_value == 0) continue; (void)printf("\t%-16s%s\n", hashnl[curhash->hashsize].n_name + 1, curhash->description); } return; } if (hashname != NULL) { for (curhash = khashes; curhash->description; curhash++) { if (strcmp(hashnl[curhash->hashsize].n_name + 1, hashname) == 0 && hashnl[curhash->hashsize].n_value != 0 && hashnl[curhash->hashtbl].n_value != 0) break; } if (curhash->description == NULL) { warnx("%s: no such hash", hashname); return; } } (void)printf( "%-16s %8s %8s %8s %8s %8s %8s\n" "%-16s %8s %8s %8s %8s %8s %8s\n", "", "total", "used", "util", "num", "average", "maximum", "hash table", "buckets", "buckets", "%", "items", "chain", "chain"); for (curhash = khashes; curhash->description; curhash++) { if (hashnl[curhash->hashsize].n_value == 0 || hashnl[curhash->hashtbl].n_value == 0) continue; if (hashname != NULL && strcmp(hashnl[curhash->hashsize].n_name + 1, hashname)) continue; elemsize = curhash->type == HASH_LIST ? sizeof(*hashtbl_list) : sizeof(*hashtbl_tailq); deref_kptr((void *)hashnl[curhash->hashsize].n_value, &hashsize, sizeof(hashsize), hashnl[curhash->hashsize].n_name); hashsize++; deref_kptr((void *)hashnl[curhash->hashtbl].n_value, &hashaddr, sizeof(hashaddr), hashnl[curhash->hashtbl].n_name); if (verbose) (void)printf( "%s %lu, %s %p, offset %ld, elemsize %llu\n", hashnl[curhash->hashsize].n_name + 1, hashsize, hashnl[curhash->hashtbl].n_name + 1, hashaddr, (long)curhash->offset, (unsigned long long)elemsize); thissize = hashsize * elemsize; if (hashbuf == NULL || thissize > hashbufsize) { if ((nhashbuf = realloc(hashbuf, thissize)) == NULL) errx(1, "malloc hashbuf %llu", (unsigned long long)hashbufsize); hashbuf = nhashbuf; hashbufsize = thissize; } deref_kptr(hashaddr, hashbuf, thissize, hashnl[curhash->hashtbl].n_name); used = 0; items = maxchain = 0; if (curhash->type == HASH_LIST) { hashtbl_list = hashbuf; hashtbl_tailq = NULL; } else { hashtbl_list = NULL; hashtbl_tailq = hashbuf; } for (i = 0; i < hashsize; i++) { if (curhash->type == HASH_LIST) nextaddr = LIST_FIRST(&hashtbl_list[i]); else nextaddr = TAILQ_FIRST(&hashtbl_tailq[i]); if (nextaddr == NULL) continue; if (verbose) (void)printf("%5d: %p\n", i, nextaddr); used++; chain = 0; do { chain++; deref_kptr((char *)nextaddr + curhash->offset, &nextaddr, sizeof(void *), "hash chain corrupted"); if (verbose > 1) (void)printf("got nextaddr as %p\n", nextaddr); } while (nextaddr != NULL); items += chain; if (verbose && chain > 1) (void)printf("\tchain = %d\n", chain); if (chain > maxchain) maxchain = chain; } (void)printf("%-16s %8ld %8d %8.2f %8d %8.2f %8d\n", hashnl[curhash->hashsize].n_name + 1, hashsize, used, used * 100.0 / hashsize, items, used ? (double)items / used : 0.0, maxchain); } } /* * kreadc like kread but returns 1 if sucessful, 0 otherwise */ int kreadc(struct nlist *nl, int nlx, void *addr, size_t size) { const char *sym; sym = nl[nlx].n_name; if (*sym == '_') ++sym; if (nl[nlx].n_type == 0 || nl[nlx].n_value == 0) return 0; deref_kptr((void *)nl[nlx].n_value, addr, size, sym); return 1; } /* * kread reads something from the kernel, given its nlist index in namelist[]. */ void kread(struct nlist *nl, int nlx, void *addr, size_t size) { const char *sym; sym = nl[nlx].n_name; if (*sym == '_') ++sym; if (nl[nlx].n_type == 0 || nl[nlx].n_value == 0) errx(1, "symbol %s not defined", sym); deref_kptr((void *)nl[nlx].n_value, addr, size, sym); } /* * Dereference the kernel pointer `kptr' and fill in the local copy * pointed to by `ptr'. The storage space must be pre-allocated, * and the size of the copy passed in `len'. */ void deref_kptr(const void *kptr, void *ptr, size_t len, const char *msg) { if (*msg == '_') msg++; if (kvm_read(kd, (u_long)kptr, (char *)ptr, len) != len) errx(1, "kptr %lx: %s: %s", (u_long)kptr, msg, kvm_geterr(kd)); } /* * Traverse the UVM history buffers, performing the requested action. * * Note, we assume that if we're not listing, we're dumping. */ void hist_traverse(int todo, const char *histname) { struct uvm_history_head histhead; struct uvm_history hist, *histkva; char *name = NULL; size_t namelen = 0; if (histnl[0].n_value == 0) { warnx("UVM history is not compiled into the kernel."); return; } deref_kptr((void *)histnl[X_UVM_HISTORIES].n_value, &histhead, sizeof(histhead), histnl[X_UVM_HISTORIES].n_name); if (histhead.lh_first == NULL) { warnx("No active UVM history logs."); return; } if (todo & HISTLIST) (void)printf("Active UVM histories:"); for (histkva = LIST_FIRST(&histhead); histkva != NULL; histkva = LIST_NEXT(&hist, list)) { deref_kptr(histkva, &hist, sizeof(hist), "histkva"); if (name == NULL || hist.namelen > namelen) { if (name != NULL) free(name); namelen = hist.namelen; if ((name = malloc(namelen + 1)) == NULL) err(1, "malloc history name"); } deref_kptr(hist.name, name, namelen, "history name"); name[namelen] = '\0'; if (todo & HISTLIST) (void)printf(" %s", name); else { /* * If we're dumping all histories, do it, else * check to see if this is the one we want. */ if (histname == NULL || strcmp(histname, name) == 0) { if (histname == NULL) (void)printf( "\nUVM history `%s':\n", name); hist_dodump(&hist); } } } if (todo & HISTLIST) (void)putchar('\n'); if (name != NULL) free(name); } /* * Actually dump the history buffer at the specified KVA. */ void hist_dodump(struct uvm_history *histp) { struct uvm_history_ent *histents, *e; size_t histsize; char *fmt = NULL, *fn = NULL; size_t fmtlen = 0, fnlen = 0; int i; histsize = sizeof(struct uvm_history_ent) * histp->n; if ((histents = malloc(histsize)) == NULL) err(1, "malloc history entries"); (void)memset(histents, 0, histsize); deref_kptr(histp->e, histents, histsize, "history entries"); i = histp->f; do { e = &histents[i]; if (e->fmt != NULL) { if (fmt == NULL || e->fmtlen > fmtlen) { if (fmt != NULL) free(fmt); fmtlen = e->fmtlen; if ((fmt = malloc(fmtlen + 1)) == NULL) err(1, "malloc printf format"); } if (fn == NULL || e->fnlen > fnlen) { if (fn != NULL) free(fn); fnlen = e->fnlen; if ((fn = malloc(fnlen + 1)) == NULL) err(1, "malloc function name"); } deref_kptr(e->fmt, fmt, fmtlen, "printf format"); fmt[fmtlen] = '\0'; deref_kptr(e->fn, fn, fnlen, "function name"); fn[fnlen] = '\0'; (void)printf("%06ld.%06ld ", (long int)e->tv.tv_sec, (long int)e->tv.tv_usec); (void)printf("%s#%ld: ", fn, e->call); (void)printf(fmt, e->v[0], e->v[1], e->v[2], e->v[3]); (void)putchar('\n'); } i = (i + 1) % histp->n; } while (i != histp->f); free(histents); if (fmt != NULL) free(fmt); if (fn != NULL) free(fn); } void usage(void) { (void)fprintf(stderr, "usage: %s [-efHiLlmstUvW] [-c count] [-h hashname] [-M core] [-N system]\n" "\t\t[-u histname] [-w wait] [disks]\n", getprogname()); exit(1); }