Hello,<br><br>First of all, i am new at the list and i have several questions about ocfs2 performance.<br><br>Where i am working i am having huge performance problens with ocfs2.<br><br>Let me tell my envoriment.<br><br>3 Xen VirtualMachines withs ocfs2 mounting an LUN exported over iSCSI. ( acctualy 3 LUNS, 3 ocfs2 clusters )<br>
<br>I am not the one who configured the envoriment, but it is making the performance of my MAIL system to bad.<br><br>Have about 9k accounts but only 4k are active. It is a maildir system. ( postfix + dovecot )<br><br>Now that this performance problens are afecting my system i am gonna try help to tunning the ocfs2.<br>
<br>Pretty much all default settings.<br><br>OCFS2 is configured to write with ordered mode. We know that changing to writeback will make performance much better, but we are not considering lose anydata, so it i snot an option.<br>
<br>Now we are going to implemente noatime options in mount. This make better performace ?<br><br>Other one, how about the commit mount options ? The default is set to 5s if i increse it how is the potential data loss in case we lost lose power?<br>
<br>Does anyone have any other paramenter that should help us ?<br><br>Another info, the inscremental backup is taking 10 to 12 hours. <br><br>All nodes have VERY high I/O wait.<br><br>Thanks to all!!<br><br>If you could tell me any doc that i sould read would be nice to!<br>
<br><br><br><br><br><br clear="all">[]'sf.rique <br>