Hello all,<div><br></div><div>I am using Ovirt 4.3.10 on Centos 7.8 with glusterfs 6.9 .</div><div>My Gluster setup is of 3 hosts in replica 3 (2 hosts + 1 arbiter).</div><div>All the 3 hosts are Dell R720  with Perc Raid Controller H710 mini(that has maximim throughtout 6Gbs)  and  with 2×1TB samsumg SSD in RAID 0. The volume is partitioned using LVM thin provision and formated XFS.</div><div>The hosts have separate 10GE network cards for storage traffic.</div><div>The Gluster Network is connected to this 10GE network cards and is mounted using Fuse Glusterfs(NFS is disabled).Also Migration Network is activated on the same storage network.</div><div><br></div><div> </div><div>The problem is that the 10GE network is not used at full potential by the Gluster.</div><div>If i do live Migration of Vms i can see speeds of 7GB/s ~ 9GB/s.</div><div>The same network tests using iperf3 reported 9.9GB/s ,  these exluding the network setup as a bottleneck(i will not paste all the iperf3 tests here for now).</div><div>I did not enable all the Volume options  from &quot;Optimize for Virt Store&quot;, because of the bug that cant set volume  cluster.granural-heal to enable(this was fixed in vdsm-4</div><div>40, but that is working only on Centos 8 with ovirt 4.4 ) .</div><div>i whould be happy to know what are all these &quot;Optimize for Virt Store&quot; options, so i can set them manually.</div><div><br></div><div><br></div><div>The speed on the disk inside the host using dd is b etween 1GB/s to 700Mbs.</div><div><br></div><div><br></div><div>[root@host1 ~]# dd if=/dev/zero of=test bs=100M count=40 cou
nt=80 status=progress                               
8074035200 bytes (8.1 GB) copied, 11.059372 s, 730 MB/s
80+0 records in
80+0 records out
8388608000 bytes (8.4 GB) copied, 11.9928 s, 699 MB/s<br></div><div><br></div><div><br></div><div>The dd  write test on the gluster volme inside the host is poor only  ~ 120MB/s .</div><div>During the dd test, if i look at Networks-&gt;Gluster network -&gt;Hosts at Tx and Rx the network speed barerly reaches over  1Gbs  (~1073 Mbs) out of maximum of 10000 Mbs. </div><div><br></div><div><br></div><div> dd if=/dev/zero of=/rhev/data-center/mnt/glu
sterSD/gluster1.domain.local\:<wbr>_data/test  bs=100M count=80
 status=progress                                   
8283750400 bytes (8.3 GB) copied, 71.297942 s, 116 MB/s
80+0 records in
80+0 records out
8388608000 bytes (8.4 GB) copied, 71.9545 s, 117 MB/s<br></div><div><br></div><div><br></div><div>I have attached  my Gluster volume settings and mount options.</div><div><br></div><div>Thanks,</div><div>Emy<br></div><div><br></div><div><br></div>