lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 12 Nov 2008 12:35:14 +0100 From: Ingo Molnar <mingo@...e.hu> To: Linux Kernel <linux-kernel@...r.kernel.org>, Dhaval Giani <dhaval@...ux.vnet.ibm.com>, Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>, Vaidyanathan S <svaidyan@...ibm.com>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Bharata B Rao <bharata@...ux.vnet.ibm.com> Subject: Re: [PATCH][mmotm] Sched fix stale value in average load per task * Balbir Singh <balbir@...ux.vnet.ibm.com> wrote: > cpu_avg_load_per_task() returns a stale value when nr_running is 0. > It returns an older stale (caculated when nr_running was non zero) > value. This patch returns and sets rq->avg_load_per_task to zero > when nr_running is 0. > > Compile and boot tested on a x86_64 box. > > Signed-off-by: Balbir Singh <balbir@...ux.vnet.ibm.com> > --- > > kernel/sched.c | 2 ++ > 1 file changed, 2 insertions(+) applied to tip/sched/urgent, thanks Balbir! i'm wondering, have you observed load-balancer misbehavior due to this load-average imprecision bug, on some workload? (or have you found this via code review) Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists