Re: TUNING:aio parameters on AIX
Posted in 1998
Andreas Zeugswetter — — source: Informix-list mailing list archive (1991-1998)
> > > we increase them to MAX= (10* count of disks using aio) and > > > MIN = (MAX * .5). I believe that OL 7.23 does use the aio libraries. > Has > > > someone else in an AIX shop changed this configuration? Did it help? First of all, yes it does help to increase the default. Due to the lack of tuning information we set minservers to 40 (= disks) and maxservers to 160 (= 4 * disks) and also increased the max number of REQUESTS to 8192, but that was simple intuition. The IBM recommendation seems to be too high. It would be nice to have a command that displays actual use of the KAIO kernel threads in AIX. Andreas Zeugswetter