On 3/28/07, David Rees <[EMAIL PROTECTED]> wrote: > Here's a sample from my backuppc server which has 3 disks while > backups are being run. The backuppc partition uses 2 disks in RAID1 > exactly the same as yours. The other disk is the system disk (also > 7200rpm ATA). > Hardware/OS: AthlonXP 2000+ 1GB RAM, Fedora Core 6. A max of 3 backups > will run at a time on this machine. This same data can be generated > using sar -b. > > 23:00:02 tps rtps wtps bread/s bwrtn/s > 23:10:02 639.17 219.11 420.06 5440.01 8864.10 > 23:20:03 757.28 215.81 541.46 5422.98 11696.18 > 23:30:04 497.98 211.21 286.78 3367.85 5903.83 > 23:40:04 984.20 322.85 661.35 7436.95 14135.63 > 23:50:03 619.68 391.74 227.93 10355.83 5160.97 > > You can see how much higher this system's IO/s seems to be that yours > from the only performance data you sent us.
I should note that those tps numbers don't match up with the numbers I get from iostat and are misleading. I think they are the sum of IO on all devices which inflates the numbers. Watching iostat during a backup gets me about a max of 100 tps / disk but seems to vary between 50-100. -Dave ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
