Depends... While the current version of mmchqos is primarily geared towards controlling "maintenance" tasks. It can be used to limit (cap) the IOP rate for IOs coming from a particular GFPFS client node. You would need a version that supports the -N option on the mmchqos command and then configure each node that will mount the FS. 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. From: "Eg. Bo." <egonle at aim.com> To: gpfsug-discuss at spectrumscale.org Date: 01/27/2018 12:23 PM Subject: [gpfsug-discuss] limit / fair share of GPFS bandwidth Sent by: gpfsug-discuss-bounces at spectrumscale.org Hello, 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? Thanks, Eg. Bo. egonle at aim.com _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org 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= -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20180128/1dd00d49/attachment.html>