[openib-general] Shared Receive Queue

[Tziporet Koren]

which HW & FW are you using?

-----Original Message-----
From: Roland Dreier [mailto:rolandd at cisco.com]
Sent: Tuesday, July 26, 2005 5:38 PM
To: Galen M. Shipman
Cc: openib-general at openib.org
Subject: Re: [openib-general] Shared Receive Queue


    Galen> We have software which uses the mellanox shared receive
    Galen> queue and we are seeing a substantial performance penalty
    Galen> (on the order of 4-5 usec on 0 byte messages). I don't know
    Galen> all the technical details but if you could keep this in
    Galen> mind when working on the shared receive queue perhaps the
    Galen> performance penalty could be much less in gen2.

Is this performance penalty in the software?  It seems much more
likely that the issue is in the hardware implementation of SRQ.

 - R.
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