[OpenAFS-devel] .35 sec rx delay bug?

[Rainer Toebbicke]

Harald Barth wrote:
> Derrick J Brashear wrote:
>> Did you have jumbograms enabled? If you disable them, but leave the mtu at 
>> 9000, are things better? I bet they are.
> 
> Derick wrote that things get better when jumbograms are _dis_abled, did he?
> 

Euh...  I bet he meant with big MTUs. Turning jumbograms off on a 
standard Ethernet MTU actually degrades performance, just tested:

107 MB/s -> 94 MB/s (admittedly a quick, non-scientific test, on 
Andrei Maslennikov's hardware, GigE, MTU 1500).




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Rainer Toebbicke
European Laboratory for Particle Physics(CERN) - Geneva, Switzerland
Phone: +41 22 767 8985       Fax: +41 22 767 7155