Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

sched_pstats_hook: fix estcpu decay.

Browse Source 
this makes my desktop usable when running "make -j4".
This commit is contained in:
yamt 2009-05-31 04:13:33 +00:00
parent 250d329095
commit 31a7ec7dc7
1 changed files with 11 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
sys/kern/sched_4bsd.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: sched_4bsd.c,v 1.24 2008/10/07 09:48:27 rmind Exp $ */
/* $NetBSD: sched_4bsd.c,v 1.25 2009/05/31 04:13:33 yamt Exp $ */
/*-
* Copyright (c) 1999, 2000, 2004, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@ -68,7 +68,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sched_4bsd.c,v 1.24 2008/10/07 09:48:27 rmind Exp $");
__KERNEL_RCSID(0, "$NetBSD: sched_4bsd.c,v 1.25 2009/05/31 04:13:33 yamt Exp $");
#include "opt_ddb.h"
#include "opt_lockdebug.h"
@ -288,17 +288,22 @@ decay_cpu_batch(fixpt_t loadfac, fixpt_t estcpu, unsigned int n)
void
sched_pstats_hook(struct lwp *l, int batch)
{
fixpt_t loadfac;
/*
* If the LWP has slept an entire second, stop recalculating
* its priority until it wakes up.
*/
KASSERT(lwp_locked(l, NULL));
if (l->l_slptime > 0) {
fixpt_t loadfac = 2 * (averunnable.ldavg[0]);
l->l_estcpu = decay_cpu(loadfac, l->l_estcpu);
resetpriority(l);
if (l->l_stat == LSSLEEP || l->l_stat == LSSTOP ||
l->l_stat == LSSUSPENDED) {
if (l->l_slptime > 1) {
return;
}
}
loadfac = 2 * (averunnable.ldavg[0]);
l->l_estcpu = decay_cpu(loadfac, l->l_estcpu);
resetpriority(l);
}
/*