Dear All I have Bacula-2.0.3 running on a dual P3 1 GHz linux system with a 2.6.21.1 kernel.
I have noticed that the backup rate of a client decreasing during the backup it starts at 3,200 KB/s and slows down to 2,000 KB/s after 30 minutes. I used Status of the Storage daemon to get the rate about every 5 minutes. The backup was 6 GB to disc. I suspect the slow down may be due to the fact other jobs were waiting for this job to finish since I ran another backup of another client and the rate was constant during the whole backup, the difference being there were no jobs queued to run ie waiting for the device. Could the slow down be caused by the director polling the system and so impacting on the storage daemon? FYI I had a swapper error reported by the kernel and thought it was the problem - I had forgot to tweak the TCP settings on the "new" system. The above backups were done with the tweaks applied. The tweaks are echo "65536" > /proc/sys/vm/min_free_kbytes echo "6553600" >/proc/sys/net/core/wmem_max echo "8738000" > /proc/sys/net/core/rmem_max echo "8192 873800 8738000" > /proc/sys/net/ipv4/tcp_rmem echo "4096 655360 6553600" > /proc/sys/net/ipv4/tcp_wmem Thanks in advance Stephen Carr ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
