>>>>> On Wed, 12 Apr 2006 15:42:25 -0400, Ian Levesque <[EMAIL PROTECTED]> said: > > Hi all, > > I've been trying to optimize the backup speed of my bacula > installation. My full backups, no spooling, max out at around 12-13MB/ > s per client, where I think I should be seeing over 40MB/s. It > doesn't appear to affect the speed of per-client backups when more > than one client is running at a time. However, I've noticed that the > server's load average while in operation is always above 1, and > increases for each client it's backing up. So, if 3 clients are being > backed-up, I see load averages of above 3 on the server (though CPU > utilization is typically less than 50%). I'm not sure if this is > normal, or is in any way affecting the speed I'm seeing... > > I should note that network bandwidth tests between the server and > clients typically reach full utilization (near 100MB/s) and the > drives on the clients and backup server are both capable of over 50MB/s. > > Server-Side > Bacula version: 1.38.6 on Fedora Core 3 > Backup Server: Dual AMD MP 1900 w/ 3GB RAM on a gigabit link, Adaptec > 2940U2W SCSI > Tape library: ADIC Scalar 100 w/ three LTO-2 drives (using LTO-2 tapes) > Database: mysql, with indexes, running in a slightly modified 'huge' > config on the backup server > > Client-Side > Bacula version: 1.38.5 on Fedora Core 3 > Typical client: Pentium IV 2.4Ghz, 1GB RAM on a gig link
Since you have a multi-CPU server, what kind of CPU utilization is 50% (the whole machine or one of the daemon processes)? What about the CPU utilization on the client? It is useful to check with /usr/bin/top. Did you try using spooling? __Martin ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
