[Gluster-users] Performance

[Alastair Neil]

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?

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> 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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