Re: RX2800 sporadic disk I/O slowdowns

Am 18.10.2024 um 20:26 schrieb Richard Jordan:

We periodically (sometimes steady once a week, but sometimes more frequent) one overnight batch job take much longer than normal to run. Normal runtime about 30-35 minutes will take 4.5 - 6.5 hours.  Several images called by that job all run much slower than normal.  At the end the overall CPU and I/O counts are very close between a normal and a long job.

If 'overall CPU and I/O counts' are about the same, please re-consider my advice to run T4. Look at the disk response times and I/O queue length and compare a 'good' and a 'slow' run.
If 'the problem' would be somewhere in the disk IO sub-system, changing RMS buffers will only 'muddy the waters'.
Volker.