[OpenAFS] openafs performace problems

[Lars Schimmer]

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Juha J=E4ykk=E4 wrote:
> Hi all!
>=20
> What is the speed that can be expected of openafs, when writing some (p=
erhaps=20
> 10-100) largish (perhaps 10-100 MB) files or a single 4GB file to an af=
s=20
> volume?
>=20
> The background for the question is a desire to move from using NFS for =
HPC=20
> data to AFS; over the lab 100Mbps network the speeds are the same, limi=
ted to=20
> abour 10MBps by the network; no problem there. But when writing to the =
afs=20
> volume or NFS mount from the same host which is running the fileserver =
and=20
> NFS server processes, things get nasty: I can write ~80MBps to the NFS =
share=20
> (it being effectively local disc now), but AFS speed stays at 10MBps. I=
=20
> cannot seem to figure out why.

Is the encryption enabled? I saw the limit at nealry 100 MBits/sec with
encryption enabled.

> Cheers,
> Juha
>=20


MfG,
Lars Schimmer
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TU Graz, Institut f=FCr ComputerGraphik & WissensVisualisierung
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