On Fri, Jan 21, 2011 at 02:28:29PM +0000, Jon Leighton wrote:

Hi there,

On Fri, 2011-01-21 at 09:03 -0500, Josef Bacik wrote:

quoted

Heh so now that I've had a moment to wake up, how about running your test on
ext3, but mount the partition with

mount -o barrier

and see if it's still faster than ext4.  Thanks,

You're right, that slows it down significantly on the ext3 partition. Is
this expected behaviour with ext4 then?

Yup, whatever you are doing in your webapp is making your database do lots of
fsyncs, which is going to suck.  If you are on a battery backed system or just
don't care if you lose your database and rather it be faster you can mount your
ext4 fs with -o nobarrier.  Thanks,

Josef