[OpenAFS] Unusually Long Load times

Douglas E. Engert deengert@anl.gov
Wed, 17 Mar 2010 11:06:17 -0500

bampfamd@berkeley.edu wrote:
> Hey,
> Sorry, it is running 1.4.11. The version of AFS varies from one computer
> to another. Some of them are running 1.5.64, some are running 1.4.11. But
> most of them have very reasonable load times. As for this one, it's been
> like this for a while. I'm tempted to try and use 1.5.72..but for some
> reason I don't think it's going to fix the problem.

Are you using a VPN? It could be dropping fragmented packets.
See the -rxmaxmtu afsd parameter.

> Thanks,
> Anh
>> bampfamd@berkeley.edu wrote:
>>> I currently use openafs 1.4.1 from a Mac to connect to my AFS server
>>> (before i was on 1.5.64). Every time I logon to AFS, it would take 4-5
>>> minutes to load/navigate between folders. This only happens the first
>>> time
>>> I access the server/folders. Afterwards things are very smooth.
>>> Nevertheless, I also use OpenAFS on other Mac machines to connect to the
>>> same AFS server and they load relatively fast even on the first login. I
>>> don't think this is a computer-power issue because the computers are
>>> pretty similar in specs. Does anyone know why this particular machine
>>> takes so long to load files from the server everytime I create a new
>>> connection? I figured it had something to do with the cache files and
>>> that
>>> OpenAFS is not able to cache files from the server so that every it has
>>> to
>>> re-download all the files again...
>> Are you really running 1.4.1, and not 1.4.11? If you are running 1.4.1,
>> please upgrade...pretty please.
>> The behavior that you describe make sense because the client caches the
>> data on the first access. What version of OpenAFS are the other
>> computers running? You can find this out by running "rxdebug -port 7001
>> -version localhost" on the other machines.
>> Thanks,
>> Jason
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  Douglas E. Engert  <DEEngert@anl.gov>
  Argonne National Laboratory
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  Argonne, Illinois  60439
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