On 20/12/2020 12:38, Josh Fisher wrote: > It is not likely a network issue. 'A' does not have a strong processor. > When compression is enabled for a job, it is the client that performs > the compression. Likewise for data encryption. Try disabling both > compression and encryption for the 'A' job, if enabled. I have compression and encryption disabled for all of the jobs, although on further examination I was getting a compression ratio shown under "Comm line compression" in the backup messages. That was a surprise given the Celeron machine's FD was running Bacula 5.0.3, and Comm Line Compression was only added in Bacula 9.
I've upgraded both servers to 9.0.6, and changed the bacula-fd config on the Celeron machine to add: Comm Compression = no Sadly Nethogs is only reporting a speed of about 2.2Mbyte/sec received by bacula-sd on the storage server. "Iftop" is reporting about 10 megabits per second, peaking at 14. I've run an iperf test, and I'm seeing a gigabit connection between the two servers: [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.10 GBytes 943 Mbits/sec > Also, the rate is based on the total run time for the job, including > de-spooling attributes at the end. If attribute de-spooling is taking a > long time, then database performance may be the bottleneck. It looks like the bottleneck is definitely in data transfer. From a few days ago: 18-Dec 06:48 syrys-sd JobId 5004: Spooling data ... 18-Dec 11:06 syrys-sd JobId 5004: User specified Device spool size reached: DevSpoolSize=53,687,125,721 MaxDevSpoolSize=53,687,091,200 18-Dec 11:06 syrys-sd JobId 5004: Writing spooled data to Volume. Despooling 53,687,125,721 bytes ... 18-Dec 11:15 syrys-sd JobId 5004: Despooling elapsed time = 00:08:47, Transfer rate = 101.8 M Bytes/second That's 5h42m to transfer 50GB -- which works out at about 2Mbps. I've just restarted the backup and let it run for a while: Scheduled time: 25-Dec-2020 16:05:11 Start time: 25-Dec-2020 16:05:18 End time: 25-Dec-2020 18:35:59 Elapsed time: 2 hours 30 mins 41 secs Priority: 10 FD Files Written: 218,965 SD Files Written: 0 FD Bytes Written: 11,302,639,060 (11.30 GB) SD Bytes Written: 0 (0 B) Rate: 1250.2 KB/s Software Compression: None Comm Line Compression: None Snapshot/VSS: no Encryption: no Accurate: no That works out at about 1.2 megabytes per second. This was aborted in the spooling phase, before it even started writing to tape. Thanks Phil. _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
