We have a cluster of 3 IBM servers that build the base of VMware vSphere 5 virtual environment. 3 major servers are built that use XFS mainly because the size of the filesystem: 64TB, 32TB and 5TB etc. These servers run RHEL 6.4, the XFS filesystems are configured on IBM Storwise V7000 subsystem through raw device mapping. Two of them serve files through NFS and Samba, another one is a SMTP/IMAP server. Accessing files and emails does not seem to be slow. But simple commands "ls" and "du" run very slow. For example, a first run of ls -l /var/spool/mail could take 8 seconds, note we have only 1360 items in this directory. "du" would also take much longer to run than ZFS or ext3. I could not find any direct reference of XFS possibly having problem with these kind commands. Could this be due to my combination of hardware and software configuration, or is there some tuning to be done? Many thanks, Qing -- ------------------ Qing Chang Senior Systems Administrator M6-624 Research Computing Sunnybrook Health Sciences Centre 2075 Bayview Ave. Toronto, Ontario, M4N 3M5 (416) 480-6100 x3263 qchang@xxxxxxxxxxxxxxx ------------------ _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs