On 11 Feb 2015, at 03:06, Shyam <srangana@xxxxxxxxxx> wrote: <snip> > 2) We ran an strace of tar and also collected io-stats outputs from these volumes, both show that create and mkdir is slower on slow as compared to the fast volume. This seems to be the overall reason for slowness Any idea's on "why" the create and mkdir is slower? Wondering if it's a case of underlying filesystem parameters (for the bricks) + maybe physical storage structure having become badly optimised over time. eg if its on spinning rust, not ssd, and sector placement is now bad Any idea if there are tools that can analyse this kind of thing? eg meta data placement / fragmentation / on a drive for XFS/ext4 + Justin -- GlusterFS - http://www.gluster.org An open source, distributed file system scaling to several petabytes, and handling thousands of clients. My personal twitter: twitter.com/realjustinclift _______________________________________________ Gluster-devel mailing list Gluster-devel@xxxxxxxxxxx http://www.gluster.org/mailman/listinfo/gluster-devel
