Hi, I've been running BackupPC for a while now and I've been noticing an odd trend, I have 29 servers which are identical in hardware and very similar in configuration. 28 of these servers transfer at 30-40MB/s via Rsync, one host and the database servers transfer between 2-10MB/s, even when ran individually when no other hosts are being backed up.
I've checked the IOwait on both the BackupPC server which is a 12 disk raid 10, with 2TB of usable space, 15k RPM drives, it has 5% IO while the host has 0%. I've done simple sftp transfers and they transfer at 20-30MB/s with no issues. Here is a backuppc log on one of the problem hosts, Backup# Type Filled Level Start Date Duration/mins Age/days Server Backup Path 112 full yes 0 2/5 19:06 62.3 81.6 /backuppc/pc/ras03/112 140 full yes 0 3/5 22:00 55.8 53.5 /backuppc/pc/ras03/140 154 full yes 0 3/20 04:35 465.2 39.2 /backuppc/pc/ras03/154 161 full yes 0 3/27 21:42 142.3 31.5 /backuppc/pc/ras03/161 167 full yes 0 4/4 18:00 854.0 23.7 /backuppc/pc/ras03/167 173 full yes 0 4/11 18:00 1032.9 16.7 /backuppc/pc/ras03/173 174 incr no 1 4/12 18:00 152.2 15.7 /backuppc/pc/ras03/174 175 incr no 1 4/13 18:00 1019.5 14.7 /backuppc/pc/ras03/175 176 incr no 1 4/14 18:00 1594.4 13.7 /backuppc/pc/ras03/176 177 incr no 1 4/15 21:11 2094.5 12.6 /backuppc/pc/ras03/177 178 full yes 0 4/19 03:00 2037.8 9.3 /backuppc/pc/ras03/178 179 incr no 1 4/20 18:16 1147.2 7.7 /backuppc/pc/ras03/179 180 incr no 1 4/21 18:04 1840.7 6.7 /backuppc/pc/ras03/180 181 partial yes 0 4/25 12:32 2389.1 2.9 /backuppc/pc/ras03/181 I've already modified the checksum but it had no impact, '--checksum-seed=32761'. How does backuppc calculate the duration and speed? I know my oracle hosts, I kick off the RMAN prior to pulling the backuppc, so that might explain the "slow transfer speeds" if it calculated size/time which is inclusive of the RMAN (Database Export) backup. This host (above) boggles me though, these are static files that are being transferred and all other 28 hosts transfer just fine. Thanks in advance for any input or troubleshooting steps. _______________________________________________ Dan Lavu System Administrator - Emptoris, Inc. www.emptoris.com Office: 703.995.6052 - Cell: 703.296.0645 ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/