[OpenAFS-devel] current cvs kernel module crash on 2.6.13-rc6

[chas williams - CONTRACTOR]

In message <43032109.6030709@ribosome.natur.cuni.cz>,=?ISO-8859-2?Q?Martin_MOKR
EJ=A9?= writes:
>/afs:/usr/vice/cache:50000
...
>I tried to copy 17GB large file from local xfs partition to the ext2 based /vi
>cepa.
...
>high context switching? How can I improve the performance?

it will be difficult to copy a 17GB with a 50M cache.  you might want
to consider a much larger cache and a larger chunksize.  this should
reduce the thrashing somewhat.  increase your cache to 1048576, and
add -chunksize 20 to the OPTIONS in /etc/sysconfig/afs.

>I cancelled the cp(1) process and as I'm nasty user, I tried:
>
># umount /afs
>Segmentation fault

it should not do that.  i need to think about this for a bit.  in
the meantime try a bigger cache.