[Gluster-users] gfs vs nfs: abysmal performance difference

Anand Avati avati at gluster.com
Tue May 26 10:16:03 UTC 2009


> but still it can't sustain a bonnie run:
>
>> sudo bonnie -d /mnt/nfs -m NFS
> File '/mnt/nfs/Bonnie.61622', size: 104857600
> Writing with putc()...done
> Rewriting...done
> Writing intelligently...done
> Reading with getc()...done
> Reading intelligently...done
> Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
>             -------Sequential Output-------- ---Sequential Input--
> --Random--
>             -Per Char- --Block--- -Rewrite-- -Per Char- --Block---
> --Seeks---
> Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU  /sec
> %CPU
> NFS       100  9179  6.4  9195  2.2  6224  4.4 10590  7.6 1599999 99.9
> 3980.8 25.7
>
>> sudo bonnie -d /mnt/gfs -m GFS
> File '/mnt/gfs/Bonnie.61618', size: 104857600
> Writing with putc()...done
> Rewriting...done
>
> Bonnie: drastic I/O error (/mnt/gfs/Bonnie.61618): Input/output error

Can you post the client and server logs of this session?

Avati




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