Re: Tuning kernel for Pyramid Nile

Yes, I have seen the suggested values in the release notes. However, I was mostly interested if anyone was running on this platform (Pyramid Nile) and if so, what they have done to the kernel to avoid problems. Specifically SHMXXX and SEMXXX parameters. We experienced an "Assertion Error" last week and I have yet to hear from the hotline on the possible cause. The error log said there was a 'semop' error, which leads me to believe the kernel needs to be retuned. I have already made several kernel changes, but this trial and error is costing us in down time during business hours. In article <6tvemf$a8$1@news.xmission.com>, "Mario Estrada" <marioestrada@guate.net> wrote: > > Normally you will find a starting point in the $INFORMIXDIR/release/* > directory. > Assuming you have already set up these parameter, and the onstat -g seg , > shows no more than one virtual segment, just give us some answers: > > 1) What is the output of onstat -p ? > 2) Do you experiment a lot of latch conditions? > 3) What about the locking requests?, does your lockwaits increase > dramatically? > 4) What is your disk layout? , Is it good for the highly used tables > 5) Are you sure you have the physical and logical logs in a separate dbspace > ? > 6) If your users connect trough a network, have you monitored the streams > for the > type of network? , If not , Do they connect through the shared memory? > 7) What is your actual configuration for NETTYPE configuration? (Important > to improve > the initial connection a process must made via the poll threads !) > > As you can see, there is a lot of stuff involved in performance tuning, so > your question > should be more specific, otherwise, I think recommendations could not target > your > specific needs. > > Regards, > > Mario Estrada > > -----Original Message----- > From: jblatz@worldnet.att.net <jblatz@worldnet.att.net> > To: informix-list@iiug.org <informix-list@iiug.org> > Date: Viernes 18 de Septiembre de 1998 05:37 PM > Subject: Tuning kernel for Pyramid Nile > > >We are running Informix ver 7.24 on a Pyramid Nile 100. I would like > >some suggestions for proper kernel tuning for Shared Memory and Semaphore > >parameters. Informix has given us some very vague suggestions but we > >are still having problems. > > > >We typically have about 175 users doing transaction processing. We have > >1 gig of memory. > > > >Any help would be appreciated. > > > >-----== Posted via Deja News, The Leader in Internet Discussion ==----- > >http://www.dejanews.com/rg_mkgrp.xp Create Your Own Free Member Forum > > > > -----== Posted via Deja News, The Leader in Internet Discussion ==----- http://www.dejanews.com/rg_mkgrp.xp Create Your Own Free Member Forum