----- Original Message ----- > 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. >
My best speed on Windows and Linux servers via rsync is 21 MB/s, the average is closer to 6 MB/s. Gerald ------------------------------------------------------------------------------ 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/