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<br><br>> Date: Wed, 17 Nov 2010 11:11:09 +0100<br>> From: r.bhatia@ipax.at<br>> To: drbd-user@lists.linbit.com<br>> Subject: Re: [DRBD-user] Low performance over NFS after upgrade from 0.7.25 to 8.2.7<br>> <br>> On 11/16/2010 07:17 PM, Håkan Engblom wrote:<br>> >> > the<br>> >> > performance, when creating many small files from an NFS-client, has<br>> >> > decreased drastically.<br>> >><br>> >> Then read about the disk settings no-disk-barrier, no-disk-flushes,<br>> >> no-md-flushes, which did not exist in 0.7, and have performance impact.<br>> > Missed this. Manipulating these settings "solves" the issue.<br>> <br>> may i kindly ask for the settings you are now using?<br>> <br>> thanks,<br>> raoul<br>> --<br><br>Well... I've not decided yet what settings to use. I could see that we got app. the same performance on 8.2.7 as on 0.7.25 when we used "alternative 3" the only alternative that was possible to have before 8.0.9 <br>With alternative 3 I mean "no-disk-barrier" "no-disk-flushes" and "mo-md-flushes". However this is less secure than leaving it on default settings for 8.2.7, which would be "barrier", so it boils down to what requirements we have...<br><br>br Håkan E. <br> </body>
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