races while allowing consistent lockless sampling of the per-cpu
statistics without atomic operations. Update comment describing
the locking protocol to include this.
These files were fumble-fingered out of the last commit.
- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.
Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).
Discussed on <tech-kern>, reviewed by <ad>.
(the utmpentry.c code), specifically with respect to who owns them and
when to free them. Now they're owned by utmpentry.c, only. Abolish the
freeutentries() function, which was the wrong abstraction; add instead
endutentries(), which flushes out the internally managed memory.
Update callers as necessary. Some (e.g. talkd) had been leaking memory;
others (e.g. syslogd) had been accidentally freeing and reloading utmp
more often than necessary. There are a couple untidy bits in users and
rwhod that someone should look after sometime, maybe.
Fixes PR bin/35131, which was about talkd's memory leak.
every time initvmstat() is called.
Change intrnamebuf to be static so this works.
Inspired by Coverty CID 2072 (incorrectly) reporting that the memory assigned
to intrnamebuf wasn't being freed.
they can be used to head other pages (not ready to commit yet...).
Use puthumanint() for oversize numbers when display_mode is RUN or BOOT (when
very big numbers are to be expected).
Allow an extra column for Csw..Flt.
Adjust some #defines to avoid use of global s & s1.
Similarly for dkswap().
Allows code to only call one of these.
Rename struct _disk to _vminfo to be nearer its contents.
Change 'systat vm' so that it always shows the 'current' cpu times, even
after ':run' or ':boot' commands. The code in vmstat.c doesn't support :run.
"iostat -x" now shows these (ala linux/solaris), but this is only splitting
the read/write bytes/transactions, not adding any new metrics. "systat
iostat" now has two new commands to switch between combined/separate mode
for both it's numbers & bar modes.
display disk transfer values (Suggested by Simon Burge). Also clip
%busy to 100 and display as an int which has the useful side effect
of stopping it overflowing into the next column (100.0).
cpus and hz is measured in ticks per cpu, divide tick count by ncpu to
determine elapsed time since last sample.
Fixes I/O rate deflation observed on multiprocessors.
as in the `vmstat' display mode. The default mode is now `time', not `boot'.
- ANSIfy.
- s@kre\(@vmstat\(@.
- __RCSID() police.
- Tweak inet.icmp display visual a little.
