Re: Performance

[Alastair Neil <ajneil.tech@xxxxxxxxx>]

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@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@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@xxxxxxxxx> 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@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@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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