[Linux-cluster] slow NFS performance on GFS2

[Olivier Desport]

Le 08/10/2013 00:01, Rafael Bravo a écrit :
> El 24/09/2013 11:29, Olivier Desport escribió:
>> Hello,
>>
>> I've installed a two nodes GFS2 cluster on Debian 7. The nodes are 
>> connected to the datas by iSCSI and multipathing with a 10 Gb/s link. 
>> I can write a 1g file with dd at 500 Mbytes/s. I export with NFS (on 
>> a 10 Gb/s network) and I only can reach  220 Mbytes/s. I think that 
>> it's a little bit far from 500 Mbytes/s...
>>
>> Do you how to tune my settings to increase the speed for NFS ?
>>
>> GFS2 mount :
>> /dev/vg-bigfiles/lv-bigfiles /export/bigfiles gfs2 
>> _netdev,nodiratime,noatime 0 0
>>
>> NFS export :
>> /export/bigfiles 
>> 172.16.0.0/16(fsid=2,rw,async,no_root_squash,no_subtree_check)
>>
>> mount on NFS clients :
>> nfs-server:/export/bigfiles /data/bigfiles nfs4 
>> _netdev,rw,user,nodiratime,noatime,intr 0 0
>     Use options on NFS clients:     rsize=32768,wsize=32768
>
>
>
Thnaks. I've already tried these settings and it doesn't inscrease the 
perfs.
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