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<p>Hi Megan,<br>
</p>
<p>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...</p>
<p>Anyway, FWIW...<br>
</p>
<p>~]# mysql --version<br>
mysql Ver 14.14 Distrib 5.5.54-38.6, for Linux (x86_64) using
readline 5.1<br>
</p>
<p>Product: robinhood<br>
Version: 3.0-1<br>
Build: 2017-03-13 10:29:26<br>
<br>
Compilation switches:<br>
Lustre filesystems<br>
Lustre Version: 2.5<br>
Address entries by FID<br>
MDT Changelogs supported<br>
<br>
Database binding: MySQL<br>
</p>
<p>RPM: robinhood-lustre-3.0-1.lustre2.5.el6.x86_64</p>
Lustre rpms:<br>
<p>lustre-client-2.5.5-2.6.32_642.15.1.el6.x86_64_g22a210f.x86_64<br>
lustre-client-modules-2.5.5-2.6.32_642.15.1.el6.x86_64_g22a210f.x86_64<br>
</p>
<br>
<div class="moz-cite-prefix">On 5/18/17 11:55 AM, Ms. Megan Larko
wrote:<br>
</div>
<blockquote
cite="mid:CAPAniMbNjCEm+z+qBph41YRKT=Zm5ZgOtVDpwQbD4GG_ZT2mVg@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>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.</div>
<div><br>
</div>
<div>Cheers,</div>
<div>megan</div>
</div>
<div class="gmail_extra"><br>
</div>
</blockquote>
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