<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 10pt; color: #000000'><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><div style="font-family: Arial; font-size: 10pt; color: #000000"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><div style="font-family: Arial; font-size: 10pt; color: #000000">Hello,<br><br>I installed a trial version of <span>Gluster</span> Storage Software Appliance last week.<br>At the moment I do some performance tests on the server.<br>I use Ubuntu Server 11.10 as OS.<br>Hardware (2x): <br>
-AMD Opteron Quad Core 2.2GHz<br>-16GB RAM<br>-12x WD 2TB HDD @ 7200rpm<br>-10Gbit link between the servers<br><br>I use zfs as filesystem.<br>Glusterfs version 3.2.1, but I also installed 3.2.4 for testing (same behaviour).<br><br>ZFS is mounted to /data:<br>dd if=/dev/zero of=/data/LUN0 bs=1M count=20240<br>21223178240 Bytes (21 GB) kopiert, 13.6647 s, 1.6 GB/s<br><br>create a glusterfs volume (without replication for testing local speed):<br>gluster volume create test-volume san0:/data/test-volume<br><br>and mount:<br>mount -t glusterfs san0:/test-volume /mnt<br><br>dd if=/dev/zero of=/mnt/LUN0 bs=1M count=20240<br>21223178240 Bytes (21 GB) kopiert, 79.0924 s, 268 MB/s<br><br>I also do some tests with bonnie++. The result you can find as attachment.<br><br>As you can see, glusterfs mount is much slower than the local zfs mount.<br>During the dd and bonnie++ tests (glusterfs mount) the cpu load for glusterd and glusterfs processes is much more than 100% (150%-170%)<br><br>Is this the normal behaviour of glusterfs?? Or Is the Quad core cpu to slow??<br><br>Thank you for help.<br><br>Regards,<br>Erik Schwalbe<br></div></div><br></div></div><br></div></body></html>