[Gluster-users] hanging httpd processes.

[Amar Tumballi]

Hi Alvin,

Thanks for the dump output. It helped a bit.

For now, recommend turning off open-behind and read-ahead performance
translators for you to get rid of this situation, As I noticed hung FLUSH
operations from these translators.

-Amar

On Wed, Mar 29, 2017 at 6:56 AM, Alvin Starr <alvin at netvel.net> wrote:

> We are running gluster 3.8.9-1 on Centos 7.3.1611 for the servers and on
> the clients 3.7.11-2 on Centos 6.8
>
> We are seeing httpd processes hang in fuse_request_send or sync_page.
>
> These calls are from PHP 5.3.3-48 scripts
>
> I am attaching  a tgz file that contains the process dump from glusterfsd
> and the hung pids along with the offending pid's stacks from
> /proc/{pid}/stack.
>
> This has been a low level annoyance for a while but it has become a much
> bigger issue because the number of hung processes went from a few a week to
> a few hundred a day.
>
>
> --
> Alvin Starr                   ||   voice: (905)513-7688
> Netvel Inc.                   ||   Cell:  (416)806-0133
> alvin at netvel.net              ||
>
>
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>



-- 
Amar Tumballi (amarts)
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