Hi Hal/Sashak,
Hal Rosenstock wrote:
Hi Sumit,
On Tue, 2008-06-24 at 14:21 +0530, Sumit Gaur - Sun Microsystem wrote:
Hi,
I am using OFED 2.5.*
^^^^^
1.2.5.* ?
Sorry for typo .. it is 1.2.5.*
and observing that my SMI requests are serving very fast
and response time is very less on the contrary my GSI requests were served in
more time and response time sometime goes more than 2 sec. Any light on this
different behavior.
What are the specific GS requests which are slow in response ? Are they
compute intensive ?
I am sending only request for
rpc.mgtclass = IB_PERFORMANCE_CLASS;
rpc.method = IB_MAD_METHOD_GET;
at every one second.
In general, there are a few possibilities (which can cause this). SM
traffic is VL15 whereas GS traffic is on a data VL (usually VL0 in most
subnets).
Some possibilities are:
1. Timeout/retry being hit for some GS traffic (GS request or response
lost/corrupted)
Yes, this is also happening, Sometimes I am getting corrupt data back, and if I
retry to send same request again it fails or send corrupted data back again.
2. Data VL busy (is there anything else utilizing VL0 ?)
Not sure about it. Is there anything to verify it? I am running openSM also but
not using it..
3. CPU busy (what other things are competing for CPU on the responder ?)
CPU utilization is ok.
and all requests are lid routed routed.
-- Hal
Is it expected behavior if yes then why ?
Thanks and Regards
sumit
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