[Gluster-devel] [Gluster-users] glusterfs replica volume self heal lots of small file very very slow?how to improve? why slow?

[Jocelyn Hotte]

We tried, but the process which hits 100% CPU is glusterfsd, therefore, the impact on Gluster is still there, because that process is virtually at 100% CPU.

-----Original Message-----
From: James [mailto:purpleidea at gmail.com] 
Sent: 22 septembre 2014 13:25
To: Jocelyn Hotte
Cc: justglusterfs at gmail.com; gluster-users at gluster.org; gluster-devel at gluster.org
Subject: Re: [Gluster-users] glusterfs replica volume self heal lots of small file very very slow?how to improve? why slow?

On Mon, Sep 22, 2014 at 10:04 AM, Jocelyn Hotte <jocelyn.hotte at ubisoft.com> wrote:
> When a self-heal hits in our use-case, it is a direct impact in performance for the users. The CPU of the Gluster nodes hits 100%, and maintains this for usually 1 hour, but sometimes goes up to 4-5 hours.
> This usually renders the Gluster cluster unusable, with a high impact for us.


Have you tried using cgroups to limit the effect of self-heal?