<div dir="ltr"><div>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?<br><br>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:<br><br>[root@sb-c 192.168.10.49:VM]# sync; dd if=/dev/zero of=nfsp2 bs=1M count=1024; sync<br>1024+0 records in<br>1024+0 records out<br>1073741824 bytes (1.1 GB) copied, 11.3322 s, 94.8 MB/s<br>[root@sb-c 192.168.10.49:VM]# sync; dd if=/dev/zero of=nfsp2 bs=1M count=10240; sync<br>10240+0 records in<br>10240+0 records out<br>10737418240 bytes (11 GB) copied, 117.854 s, 91.1 MB/s<br><br></div>this is on a cluster serving 5 ovirt nodes and about 60 running VMs.<br><br><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 25 October 2016 at 12:50, Service Mail <span dir="ltr"><<a href="mailto:ciclopeblu@gmail.com" target="_blank">ciclopeblu@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello,<div><br></div><div>I have the following setup:</div><div><br></div><div>3x zfs raidz2 servers with a single gluster 3.8 replicated volume across a 10G network</div><div><br></div><div>Everything is working fine however performance looks very poor to me:</div><div><br></div><div><div><br></div><div>root@Client:/test_mount# sync; dd if=/dev/zero of=nfsp2 bs=1M count=1024; sync</div><div>1024+0 records in</div><div>1024+0 records out</div><div>1073741824 bytes (1.1 GB, 1.0 GiB) copied, 32.1786 s, 33.4 MB/s</div><div><br></div><div>root@Client:/test_mount# sync; dd if=/dev/zero of=nfsp2 bs=1M count=10240; sync</div><div>10240+0 records in</div><div>10240+0 records out</div><div>10737418240 bytes (11 GB, 10 GiB) copied, 301.563 s, 35.6 MB/s</div><div><br></div></div><div>Are those reading normal? Where should I look to increase performance?</div><div><br></div><div>Thanks,</div><div><br></div><div>Ciclope</div><div><br></div><div><br></div><div><br></div></div>
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