[OpenAFS-devel] performance issues with 1.4.8 and above

[Felix Frank]

On Thu, 9 Apr 2009, Derrick Brashear wrote:

> On Thu, Apr 9, 2009 at 8:19 AM, Felix Frank <Felix.Frank@desy.de> wrote:
>> Hi,
>>
>> I've been busy doing a couple of stress tests lately. A disturbing finding
>> is that the 1.4.7 fileserver achieves nearly 25% higher data throughput than
>> 1.4.8 and 1.4.10 respectively.
>
> My suspicion: force jumbograms to be on for your environment.
>
> The issue was they could not previously be turned off, regardless of
> switch, due to a programming error in OpenAFS since 1.0.

Good call. The throughputs are identical after including -jumbo for 1.4.10.

Thanks
Felix