Hi Andreas,
I didn't see any reply earlier. Can you please comment on this question
on number of Lustre processes?
- Sridharan
________________________________
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Sridharan
Ramaswamy (srramasw)
Sent: Tuesday, January 23, 2007 10:39 AM
To: [email protected]
Subject: [Lustre-discuss] Number of processes in Lustre tunable?
I'm tring to measure the overhead of having Lustre on the
system. Among other things, I noticed it starts lot of processes,
root 4565 1 0 Jan03 ? 00:00:00 [ll_mdt_attr_14]
root 4636 1 0 Jan03 ? 00:00:01 [ll_ost_13]
root 4651 1 0 Jan03 ? 00:00:08 [ll_ost_io_13]
root 4550 1 0 Jan03 ? 00:00:03 [ll_mdt_14]
root 4516 1 0 Jan03 ? 00:00:00 [ldlm_cb_31]
I can account about 200 processes related to Lustre on an OST
node. That seems a lot considering we would like to run other
applications on the same node. Is it possible to tune these number of
processes down? Say reduce 32 ldlm process to about 8. What kind of
performance degradation to expect if we can do that?
thanks,
Sridharan
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