On 3 February 2010 10:20, Rajagopal Swaminathan <raju.rajsand at gmail.com> wrote: > Greetings, > > I am aware that mounting filesystems with noatime option greatly > increases speed. > > I have tried to follow discussion on the pros and cons of using noatime. > > I have however not been able to mount with the option relatime in centos 5.2. > > But in a production db server, which is backed up by HP DP, is it > advisable to mount with noatime? > > Anybody care to share their experience on it? > > Regards > > Rajagopal > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > All of my DB systems and more importantly integration and functional testing systems are noatime and there is a marked difference in performance - literally cutting testing time by at least half... There is a lot of disk I/O in that... RHEL doesn't have a reltime enabled kernel so centos doesn't either by default. I believe that there is a kernel in plus that is reltime enabled but due to potentially breaking ABI compatibility with RHEL I don't make use of it. James