[ofa-general] Drop in TCP performance when using OFED?

[Jan Ruffing]

Tziporet Koren wrote:
> Jan Ruffing wrote:
>> After I installed the OFED (1.4 beta), I noticed a drop in TCP
>> performance via Infiniband: from 10 GBit/s to less than 8 GBit/s.
>> Is that "expected behaviour"? Is there a way to avoid this
>> performance loss?
>>
>> The HCA used in both test machines is a Mellanox Infinihost III Lx DDR
>> HCA. Both machines run OpenSuse 11 with a 2.6.25.16 Kernel.
>>   
>
> Is it SDP or IPoIB?
> What is the FW version you use?
That's using IPoIB.
The FW version is 1.2.0 (according to ibv_devinfo).

-- 
Jan Ruffing
Software Developer

Motama GmbH
Lortzingstraße 10 · 66111 Saarbrücken · Germany
tel +49 681 940 85 50 · fax +49 681 940 85 49
ruffing at motama.com · www.motama.com

Companies register · district council Saarbrücken · HRB 15249
CEOs · Dr.-Ing. Marco Lohse, Michael Repplinger

This e-mail may contain confidential and/or privileged information. 
If you are not the intended recipient (or have received this e-mail 
in error) please notify the sender immediately and destroy this 
e-mail. Any unauthorized copying, disclosure or distribution of the 
material in this e-mail is strictly forbidden.