[Gluster-users] Gluster native client very slow

[Olivier Desport]

Le 06/09/2013 15:15, Vijay Bellur a écrit :
> On 09/06/2013 05:46 PM, Olivier Desport wrote:
>> Hello,
>>
>> I'm testing a two nodes glusterfs distributed cluster (version 3.3.1-1)
>> on Debian 7. The two nodes write on the same iscsi volume on a SAN.
>>
>> When I try to write an 1G file with dd, I have the following results :
>>
>> NFS : 107 Mbytes/s
>> Gluster client : 8 Mbytes/sec
>>
>
> What is the block size being used with dd? With smaller block sizes, 
> write throughput on native client would be low. If a bigger block size 
> like 128 KB is used, the throughput would be better.
>
> -Vijay
The block size is 1k :

dd if=/dev/zero of=/data/cms/500m-client-gluster-2 bs=1k count=500000



>
>> My /etc/fstab on the client :
>>
>> /etc/glusterfs/cms.vol /data/cms glusterfs defaults 0 0
>>
>> I'd like to use the gluster protocol because it can give me HA. Can you
>> help me to increase the perfs ?
>>
>> Thanks.
>>
>>
>>
>>
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>>
>

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