Re: Strange advises
Posted in 2000
>HPUX 10.20 >IDS 7.30UC8 > >The first is "You have KAIO running. We are aware that this feature is >causing >performance problem with Informix implementation. Recommend to not >enable it" There is a bug in some versions of IDS v7.2x of HP-UX 10.20 that causes severe degradation when kaio is enabled. However, it's not present in v7.3x. I've done some benchmarking on v7.31 UC2 on HP-UX 10.20 and can advise that I found it to be a little faster than not using it. >The second advice is very interesting for me. >"Even though your host is multi-processor, it is better to configure >as NON-MULTIPROCESSOR. If not too many mutex, which is currently being >experienced. MULTIPROCESSOR 0" Funnily enough, in connection with a performance problem on v7.24, one of the UK's Tech Support people, who's opinion I rate highly, has been suggesting the opposite, ie that we set MULTIPROCESSOR=1. HTH Neil