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: Thu, 26 Nov 2015 10:56:12 +0900 From: Joonsoo Kim <iamjoonsoo.kim@....com> To: Michal Hocko <mhocko@...nel.org> Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org, Christoph Lameter <cl@...ux.com>, linux-mm@...ck.org Subject: Re: [PATCH] mm/vmstat: retrieve more accurate vmstat value On Wed, Nov 25, 2015 at 01:00:22PM +0100, Michal Hocko wrote: > On Tue 24-11-15 15:22:03, Joonsoo Kim wrote: > > When I tested compaction in low memory condition, I found that > > my benchmark is stuck in congestion_wait() at shrink_inactive_list(). > > This stuck last for 1 sec and after then it can escape. More investigation > > shows that it is due to stale vmstat value. vmstat is updated every 1 sec > > so it is stuck for 1 sec. > > Wouldn't it be sufficient to use zone_page_state_snapshot in > too_many_isolated? Yes, it would work in this case. But, I prefer this patch because all zone_page_state() users get this benefit. Thanks. -- 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