Re: Sudden Increase in Checkpoint Lengths

2009/8/11 LIGHT SCANS <light_scans@yahoo.com>: > Hello Keith, > > All the suggestions above are good.  Let me just add these commands: > > errpt -a | pg > vmstat 5 5 > > The "errpt" shows hardware and software errors.  Look for a change > when your system started slowing down. > > The "vmstat" shows a current overview of O.S. performance.  Run it > when your system is running at its worst.  The "r" should be below 10 > (l like it below 4).  The "pi" should be 0.  The "wa" should be "0". > Any other column with a high number is worth looking into. > > -L.S. > _______________________________________________ > Informix-list mailing list > Informix-list@iiug.org > http://www.iiug.org/mailman/listinfo/informix-list > All Following a disk change and investigations on fibre cards, no hardware fault was found and the issue was unresloved. The engine was rebooted but failed to restart :-((( network port issue. Server restarted followed by successful engine restart (with TRACECKPT set). Checkpoints have all been 0 seconds since restart !!! :-))) Keith

On 12 Aug, 10:21, Keith Simmons <smile...@googlemail.com> wrote: > 2009/8/11 LIGHT SCANS <light_sc...@yahoo.com>: > > > > > Hello Keith, > > > All the suggestions above are good.  Let me just add these commands: > > > errpt -a | pg > > vmstat 5 5 > > > The "errpt" shows hardware and software errors.  Look for a change > > when your system started slowing down. > > > The "vmstat" shows a current overview of O.S. performance.  Run it > > when your system is running at its worst.  The "r" should be below 10 > > (l like it below 4).  The "pi" should be 0.  The "wa" should be "0". > > Any other column with a high number is worth looking into. > > > -L.S. > > _______________________________________________ > > Informix-list mailing list > > Informix-l...@iiug.org > >http://www.iiug.org/mailman/listinfo/informix-list > > All > > Following a disk change and investigations on fibre cards, no hardware > fault was found and the issue was unresloved. The engine was rebooted > but failed to restart :-((( network port issue. Server restarted > followed by successful engine restart (with TRACECKPT set). > Checkpoints have all been 0 seconds since restart !!! :-))) > > Keith Next time the longer checkpoints appear run onstat -g stk all and send the results...could be something in a critical section for a long time.