TDB and file back all extremely sloooow???

[fwang]

hi all

I found one of my aix servers has a very bad backup speed. both file level backup and TDB are all very very slow.

I have checked the network performance between server and client and there is no problem. the tsm client and server have almost 99% cup idle time during the backup. the network card has no error at all.

I checked the log and no obvious error that may cause performance issue.

what could possibly cause the backup so slow? where should I start?

any advice would be appreciated.

thanks in advance,

Frank

 

[fwang]

good one:
the following are results from file backups from tow servers.

Total number of objects inspected: 214,338
Total number of objects backed up: 2,463
Total number of objects updated: 2
Total number of objects rebound: 0
Total number of objects deleted: 0
Total number of objects expired: 12
Total number of objects failed: 0
Total number of bytes transferred: 395.05 MB
Data transfer time: 7.08 sec
Network data transfer rate: 57,125.32 KB/sec
Aggregate data transfer rate: 2,235.33 KB/sec
Objects compressed by: 67%
Elapsed processing time: 00:03:00

bad one:
Total number of objects inspected: 4,163
Total number of objects backed up: 54
Total number of objects updated: 0
Total number of objects rebound: 0
Total number of objects deleted: 0
Total number of objects expired: 0
Total number of objects failed: 0
Total number of bytes transferred: 2.32 GB
Data transfer time: 3,349.90 sec
Network data transfer rate: 727.34 KB/sec
Aggregate data transfer rate: 658.31 KB/sec
Objects compressed by: 71%
Elapsed processing time: 01:01:41

 

[mahmurth]

As per the log i think u have compression enabled. Compression can cause performance degradation and suspect to be your problem with backups going slow.