[gpfsug-discuss] Monitoring question

[Aurelien Ortiz ( Serviware Toulouse )]

Dear GPFSUG,

In GPFS v4, is there a way to track each request from their starting point (i.e. client node) to the back-end storage ?
I’d like to see all timings, especially those related to the Infiniband layer (i.e. verbs).

I remember that Sven Oehme told us (in the last GPFS UG in London) about new performance measurements in GPFS v4.
I have tried the new mmdiag --rpc command but honestly I was not able to understand the result properly.
I also tried the dstat python plugin, but I didn’t see any new timings related to Infiniband.
So I’m wondering wether or not I was dreaming somehow during the meeting ?!?

Can someone enlighten me on this ?

Many thanks.

Best regards,
--
Aurélien Ortiz
HPC engineer, Serviware (BULL)
Mob: +33 (0)6 75 34 65 78