[Gluster-users] Performance

[Joe Julian]

On 10/31/2016 08:29 AM, Alastair Neil wrote:
> What version of Gluster?  Are you using glusterfs or nfs mount?  Any 
> other traffic on the network, is the cluster quiescent apart from your 
> dd test?
>

What type of volume?

> It does seem slow.  I have a three server cluster, using straight xfs 
> over 10G with Gluster 3.8 and glusterfs mounts and I see:
>
> [root at sb-c 192.168.10.49:VM]# sync; dd if=/dev/zero of=nfsp2 bs=1M 
> count=1024; sync
> 1024+0 records in
> 1024+0 records out
> 1073741824 bytes (1.1 GB) copied, 11.3322 s, 94.8 MB/s
> [root at sb-c 192.168.10.49:VM]# sync; dd if=/dev/zero of=nfsp2 bs=1M 
> count=10240; sync
> 10240+0 records in
> 10240+0 records out
> 10737418240 bytes (11 GB) copied, 117.854 s, 91.1 MB/s
>
> this is on a cluster serving 5 ovirt nodes and about 60 running VMs.
>
>
>
> On 25 October 2016 at 12:50, Service Mail <ciclopeblu at gmail.com 
> <mailto:ciclopeblu at gmail.com>> wrote:
>
>     Hello,
>
>     I have the following setup:
>
>     3x zfs raidz2 servers with a single gluster 3.8 replicated volume
>     across a 10G network
>
>     Everything is working fine however performance looks very poor to me:
>
>
>     root at Client:/test_mount# sync; dd if=/dev/zero of=nfsp2 bs=1M
>     count=1024; sync
>     1024+0 records in
>     1024+0 records out
>     1073741824 bytes (1.1 GB, 1.0 GiB) copied, 32.1786 s, 33.4 MB/s
>
>     root at Client:/test_mount# sync; dd if=/dev/zero of=nfsp2 bs=1M
>     count=10240; sync
>     10240+0 records in
>     10240+0 records out
>     10737418240 bytes (11 GB, 10 GiB) copied, 301.563 s, 35.6 MB/s
>
>     Are those reading normal? Where should I look to increase performance?
>
>     Thanks,
>
>     Ciclope
>
>
>
>
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