[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:


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 
> 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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