Re: HELP: 7.1 DB Engine performance (not an easy one)

Bashar Chalabi wrote: > > We have recently moved from Online 5.02 to 7.1 on > an SCO OSR5 platform. > > Everything works beautifully for a few hours, an then, > suddenly, for no apparent reason, the DB engine slows > down dramatically. This sounds very much like your O/S scheduler has a priority aging scheme that reducues the priority of CPU hungry processes. The oninits, running as the CPU VPs that do all the work, will look like very good candidates to clobber with a low system priority. Check the release notes for support of the NOAGE config parameter or find the O/S command to reset the priority of the oninit processes back to something sane. Cosmo -- simond@informix.com