ext does less well with simultaneous IOPs than xfs.
> -----Original Message-----
> From: Manuel Arostegui [mailto:manuel@stripped]
> Sent: Wednesday, May 22, 2013 12:22 AM
> To: Rafał Radecki
> Cc: mysql@strippedm
> Subject: Re: Mysql server - which filesystem to choose? Is it really
> that important nowadays?
> 2013/5/22 Rafał Radecki <radecki.rafal@stripped>
> > 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
> > 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-
> > 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?
> Hi Rafal,
> I guess it really depends on your workload, your HW, kernel etc.
> From my experience, having XFS with lazy-count=1 and kernels 2.6.31.X
> gives better performance in our HW RAID 10 + BBU servers. We do have
> this configuration in around 200 DBs without any stability issue.
> I still have pending to test ext4/xfs with 3.2.X kernels...