[gpfsug-discuss] limit / fair share of GPFS bandwidth
Marc A Kaplan
makaplan at us.ibm.com
Sun Jan 28 15:53:47 GMT 2018
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 _______________________________________________
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