Anand Avati wrote:> Matt,
> can you post your volume spec files?
>
> avati
>
> 2009/1/9 Matt Lawrence <matt.lawrence at tamu.edu>:
>
>> We are attempting to run WRF to a shared glusterfs filesystem. It is
>> not going well at all. WRF does a bunch of fseeks as well as writes
and
>> I'm seeing at least a 30:1 slowdown between accessing the
underlying
>> filesystem vs going through glusterfs. A coworker has written a
trivial
>> test program that implements this sort of access pattern. Currently
>> using the 1.4.0rc7 version.
>>
>> Help?
>>
>> -- Matt
>>
>>
>>
>> _______________________________________________
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>> Gluster-users at gluster.org
>> http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users
>>
>>
-bash-3.2# cat /etc/glusterfs/glusterfs-server.vol
##############################################
### GlusterFS Server Volume Specification ##
##############################################
volume data
type storage/posix
option directory /export/data
end-volume
volume data-aio
type performance/io-threads
option thread-count 4
subvolumes data
end-volume
volume data-writebehind
type performance/write-behind
option aggregate-size 1MB
option window-size 3MB
subvolumes data-aio
end-volume
volume data-export
type protocol/server
option transport-type tcp
subvolumes data-writebehind
option auth.addr.data-writebehind.allow *
end-volume
-bash-3.2# cat /etc/glusterfs/glusterfs-client.vol
##############################################
### GlusterFS Client Volume Specification ##
##############################################
volume data
type protocol/client
option transport-type tcp
option remote-host fs01
option remote-subvolume data-writebehind
end-volume
volume data-aio
type performance/io-threads
option thread-count 4
subvolumes data
end-volume
volume data-writebehind
type performance/write-behind
option aggregate-size 1MB
option window-size 3MB
subvolumes data-aio
end-volume
volume data-cache
type performance/io-cache
option cache-size 64MB
option page-size 1MB
option cache-timeout 5
subvolumes data-writebehind
end-volume
volume data-readahead
type performance/read-ahead
option page-size 128KB
option page-count 4
subvolumes data-cache
end-volume