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<p class="MsoNormal">Hello Egonle. I looked at this scenario recently (H Mark!)<o:p></o:p></p>
<p class="MsoNormal">Maybe you could send me an email off-list?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>From:</b> gpfsug-discuss-bounces@spectrumscale.org [mailto:gpfsug-discuss-bounces@spectrumscale.org]
<b>On Behalf Of </b>Marc A Kaplan<br>
<b>Sent:</b> Sunday, January 28, 2018 4:54 PM<br>
<b>To:</b> gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Subject:</b> Re: [gpfsug-discuss] limit / fair share of GPFS bandwidth<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Depends... While the current version of mmchqos is primarily geared towards controlling "maintenance" tasks.</span><br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif"> <br>
It can be used to limit (cap) the IOP rate for IOs coming from a particular GFPFS client node. </span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">You would need a version that supports the -N option on the mmchqos command and then configure each node that will mount the FS.</span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Caution: try some experiments on a test system -- incorrect configuration can severely impact performance to the point where it can appear that things are totally "stuck"! mmchqos FS --disable
--reset should get you back to the default config for gpfs/QOS.</span><br>
<br>
<br>
<br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">From: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">"Eg. Bo." <<a href="mailto:egonle@aim.com">egonle@aim.com</a>></span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">To: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif"><a href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a></span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Date: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">01/27/2018 12:23 PM</span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Subject: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">[gpfsug-discuss] limit / fair share of GPFS bandwidth</span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Sent by: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif"><a href="mailto:gpfsug-discuss-bounces@spectrumscale.org">gpfsug-discuss-bounces@spectrumscale.org</a></span><o:p></o:p></p>
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<br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Hello,</span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif"> while operating a GPFS filesystem for HPC some workload of few clients is able to eat available storage and NSD performance. Compute Nodes and NSD servers are connected to Infiniband. This question
somehow is weird but is there a way to limit performance / I/O / bandwidth consumption for nodes so that other node still get "good" performance?</span><br>
<br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Thanks,</span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif"> Eg. Bo. </span><a href="mailto:egonle@aim.com"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">egonle@aim.com</span></a><tt><span style="font-size:10.0pt">_______________________________________________</span></tt><span style="font-size:10.0pt;font-family:"Courier New""><br>
<tt>gpfsug-discuss mailing list</tt><br>
<tt>gpfsug-discuss at spectrumscale.org</tt><br>
</span><a href="https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Furldefense.proofpoint.com%2Fv2%2Furl%3Fu%3Dhttp-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss%26d%3DDwICAg%26c%3Djf_iaSHvJObTbx-siA1ZOg%26r%3DcvpnBBH0j41aQy0RPiG2xRL_M8mTc1izuQD3_PmtjZ8%26m%3Dr0AtLTBmDo_uZhIdntBO8k2-1Alg_2LBLPoJamV-zsY%26s%3DBXGAuET7K4UhA24P72F4YRsAdcdJR3H02gqGOERENlE%26e%3D&data=01%7C01%7Cjohn.hearns%40asml.com%7C46150883736642014bb408d566676805%7Caf73baa8f5944eb2a39d93e96cad61fc%7C1&sdata=rZq4E4Mn0RBnYdQzFOi44kSOGit2ymYDzsjc7QQrF%2Bo%3D&reserved=0"><tt><span style="font-size:10.0pt">https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=cvpnBBH0j41aQy0RPiG2xRL_M8mTc1izuQD3_PmtjZ8&m=r0AtLTBmDo_uZhIdntBO8k2-1Alg_2LBLPoJamV-zsY&s=BXGAuET7K4UhA24P72F4YRsAdcdJR3H02gqGOERENlE&e=</span></tt></a><span style="font-size:10.0pt;font-family:"Courier New""><br>
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<br>
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