[ofa-general] performance drop for datagram mode with the new connectx FW

Oren Meron orenmeron at dev.mellanox.co.il
Mon Jun 30 00:52:40 PDT 2008


Tziporet Koren wrote:
> Or Gerlitz wrote:
>>
>>> Using the new connectx FW (2.5), I see performance drop to almost
>>> zero with ipoib datagram mode. 
>> Oren,
>>
>> any news on this?
>>
>>
> Sending to the correct Oren (Sela)
> 
> Tziporet
> 
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hi,
i do not manage to see a drop in datagram mode with the following params:
netperf-2.4.1, 64k message, RHAS5.0, fw 2.5.0, OFED-1.3, hermon-eagle-DDR, Intel servers.
connected produce ~1050 Mbytes/sec and datagram produce ~800 Mbytes/sec.
these results comply with the ones i have in my database of both releases: 1.3+2.3.0 and 1.3.1+2.5.0.
can you recheck all params and help us reproduce: test version, mtu, device etc.

BUT,
i do see a bw drop in CONNECTED mode to 30-40 Mbytes/sec with the following params:
netperf-2.4.1, 64k message, RHAS5.1, fw 2.5.0, OFED-1.3.1, hermon-eagle-DDR, AMD servers.
Eli is debugging it now.




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