lkml.org 
[lkml]   [2019]   [Dec]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] memcg: account security cred as well to kmemcg
Date
On Thu, Dec 05, 2019 at 02:37:21PM -0800, Shakeel Butt wrote:
> The cred_jar kmem_cache is already memcg accounted in the current
> kernel but cred->security is not. Account cred->security to kmemcg.
>
> Recently we saw high root slab usage on our production and on further
> inspection, we found a buggy application leaking processes. Though that
> buggy application was contained within its memcg but we observe much
> more system memory overhead, couple of GiBs, during that period. This
> overhead can adversely impact the isolation on the system. One of source
> of high overhead, we found was cred->secuity objects.
>
> Signed-off-by: Shakeel Butt <shakeelb@google.com>

Reviewed-by: Roman Gushchin <guro@fb.com>

Thanks!

\
 
 \ /
  Last update: 2019-12-06 00:24    [W:0.055 / U:2.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site