NetBackup resource broker single threaded Sybase query/evaluations

[someguy]

Hello,
Has anyone here had performance problems with 6.5 masters running on Solaris with T5220 or T2 Sparc class processors? I have noticed that during periods of heavy job load the nbrb evaluation cycle, which appears to handled via a single threaded dbsrv9 process, can take forever and leave jobs stuck between requesting & granted resources states. Sometime for 15 minutes a time, depending on the job load.

I am familiar with nbrb.conf tweaks, however this doesn't make much difference in my environment where we have many disk-based destinations. Seems like in large environments, the master needs to be on a processor better suited for single threaded performance.

Thoughts?

[CY]

According to Dave High (Symantec Technical Product Manager - NetBackup), NetBackup Master server has high CPU requirement and lower I/O requirement than Media servers.  As a general guideline, a Master should have multiple physical CPU's and lots of RAM.

My experience of using T1 processor based Sun server (T2000 - single T1 physical processor with 4 cores, and with 4 threads per core) as NBU servers wasn't very pleasant.  Even though T2 is different from T1, T5220 is still single physical processor with 4 or 8 cores so it may not be your best choice for NetBackup Master server.

[Nicolai · Accepted solution]

Don't if already done this. But you  can increase the performance of the database by going into /usr/openv/db/bin/nbdb select  2 "Database space and Memory Management"  -  4 "Adjust memory settings"  - 3 "Large Configuration".

Make sure got memory for the large configuration.