[lustre-discuss] Robinhood exhausting RPC resources against 2.5.5 lustre file systems
Jessica Otey
jotey at nrao.edu
Thu May 18 11:36:43 PDT 2017
Hi Megan,
Thanks for your input. We use percona, a drop-in replacement for
mysql... The robinhood activity floods the MDT, but it does not seem to
produce any excessive load on the robinhood box...
Anyway, FWIW...
~]# mysql --version
mysql Ver 14.14 Distrib 5.5.54-38.6, for Linux (x86_64) using readline 5.1
Product: robinhood
Version: 3.0-1
Build: 2017-03-13 10:29:26
Compilation switches:
Lustre filesystems
Lustre Version: 2.5
Address entries by FID
MDT Changelogs supported
Database binding: MySQL
RPM: robinhood-lustre-3.0-1.lustre2.5.el6.x86_64
Lustre rpms:
lustre-client-2.5.5-2.6.32_642.15.1.el6.x86_64_g22a210f.x86_64
lustre-client-modules-2.5.5-2.6.32_642.15.1.el6.x86_64_g22a210f.x86_64
On 5/18/17 11:55 AM, Ms. Megan Larko wrote:
> With regards to (WRT) Subject "Robinhood exhausting RPC resources
> against 2.5.5 lustre file systems", what version of robinhood and
> what version of MySQL database? I mention this because I have been
> working with robinhood-3.0-0.rc1 and initially MySQL-5.5.32 and Lustre
> 2.5.42.1 on kernel-2.6.32-573 and had issues in which the robinhood
> server consumed more than the total amount of 32 CPU cores on the
> robinhood server (with 128 G RAM) and would functionally hang the
> robinhood server. The issue was solved for me by changing to
> MySQL-5.6.35. It was the "sort" command in robinhood that was not
> working well with the MySQL-5.5.32.
>
> Cheers,
> megan
>
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