[Lustre-discuss] Lustre and system cpu usage

[Peter Kjellström]

On Saturday, January 15, 2011 12:57:18 am Claudio Baeza Retamal wrote:
> Dears folks,
> 
> last month, I have configured lustre 1.8.5 over infiniband, before, I
> was using  Gluster 3.1.2, performance was ok but reliability was wrong,
> when 40 or more applications requested at the same time  for open a
> file, gluster servers  bounced randomly the active connections from
> clients. Lustre has not this problem, but I can see others issues, for
> example, namd appears with "system cpu"  around of 30%,  hpl benchmark
> appears between  70%-80% of "system cpu",

This is certainly an indication of something being very wrong (not necessarily 
lustre). hpl does very minimal I/O and only a completely broken filesystem 
would cause 70-80% "system cpu".

/Peter
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