[OpenAFS] openafs performace problems

Rich Sudlow rich@nd.edu
Tue, 06 Jan 2009 11:21:33 -0500

marcus.nilsson@pulsen.se wrote:
>> Hi all!
>> What is the speed that can be expected of openafs, when writing some
>> (perhaps
>> 10-100) largish (perhaps 10-100 MB) files or a single 4GB file to an
>> afs
>> volume?
> Have a look at: http://workshop.openafs.org/afsbpw07/talks/rich.html

It should be noted that the for the most part the AFS cache parameters
were untuned with the exception of chunksize which was set at 19
for these tests. Current versions of OpenAFS will yield slightly better
performance and the multi client read issue was resolved a while ago.
If you're getting 10 MB AFS client speeds my guess is that you're using
100 Mb network links so the network is slowing you down.


> / Marcus

Rich Sudlow
University of Notre Dame
Center for Research Computing
128 Information Technology Center
PO Box 539
Notre Dame, IN 46556-0539

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