On Sat, Feb 21, 2009 at 11:42 PM, Chan Chung Hang Christopher < christopher.chan at bradbury.edu.hk> wrote: > > Would running two CP command to copy 2 different set of files to two >> different targets suffice as a basic two thread test? >> >> > So long as you generate disk access through a file system and not hdparm. > >> Is there a way to monitor actual disk transfers from command line without >> having to do manual timing? >> > Like I said: iostat > > Thanks for the information. I checked iostat on one of my older servers running off CentOS 5.0 (2.6.18-53.1.21.el5xen) which was also running md raid 1 and it also confirmed that the md raid 1 was getting reads from both member devices. Although looking at it now, I think I really screwed up that installation, being my first, I had md running on top of LVM PV *slap forehead* -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20090222/73112584/attachment-0005.html>