Rafal, I benchmark a lot on various hardware and software configurations. When I started 2 years back I went along with the general consensus that XFS is faster than ext4 for MySQL. I recently had the opportunity to see how much of a difference, if any, it made. I didn't find much, especially on SSD.
The benefit of ext4 on SSD (on newer kernels) is that it supports the TRIM functionality (add discard to your /etc/fstab file for the particular file system). I don't believe TRIM is supported for XFS. -Tim On Wed, May 22, 2013 at 2:55 AM, Rafał Radecki <radecki.ra...@gmail.com>wrote: > Hi All. > > I use mysql/perconna/maria on my production CentOS 6 Linux servers. I > currently try to choose the default filesystem for partitions with mysql > data. Some time ago (previous dba) reiserfs was the choice but now it is > not in the kernel and the main author is in prison. > > From what I've read xfs and ext4 are valid choices and performance > benchmarks over the web show that they are "comparable" (no clear winner). > I've also read that with every new kernel there can be changes in > performance in every filesystem ( for example > > http://gtowey.blogspot.com/2013/02/serious-xfs-performance-regression-in.html > ). > > From your experiences: which filesystem to choose for a mysql db? Is ext4 > or xfs better? Or is it more a case of proper filesystem tuning to my > workload? Any articles worth reading which you can recommend? > > Best regards, > Rafal. >
