I have just had a call escalated to level 2 and was wondering if anybody else is having a problem and may not know it. I was told I was the first to report it.
We have recently upgraded to TSM 5.1.7.2 and noticed there is a higher amount of CPU being consumed by the DSMSERV process. We were upgrading from 4.2.3.2. I have narrowed it down using HP-UX glance to be related to tape drive activity and can see (using glance) that there is a correlation between the number of active tape drives and the amount of CPU being consumed. I further investigated and discovered there are many threads consuming CPU when this happens and that 1 thread per Tape DRIVE is 90-100% CPU. I compared these to the HP-UX stape device driver and it will only use 5 - 7% CPU (And it performs much faster). Misery loves company; I would like to know if anybody else is experiencing any of the same problems with high CPU on tape threads and what flavor of UNIX they are using. Bill My Environment: TSM Server 5.1.7.2 TSM Device Driver 5.1.7.2 and 5.1.6.5 HP V2500 32 CPU - HP-UX 11.0 STK 9710 DLT7000 (8 Drives) STK 9710 DLT7000 (6 Drives) Bill Slaughter Tupperware 407-826-4580
