Messages in this thread | | | Subject | Re: 2.2.14 feels slow and non-interactive. | Date | Fri, 21 Jan 2000 00:20:04 +0100 (MET) | From | (Rogier Wolff) |
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Alan Cox wrote: > > same time. After that when the database is doing its stuff both > > the database process and netscape gets stuck in D-state in wait_on_page > > for many seconds while the disk (Adaptec AIC7xxx contr) is trashing > > like mad. If I close netscape during this I can see the netscape > > That sounds quite normal for a machine that has passed the point where the > working set for the active processes no longer fits in ram. > > > ordered a new one. I sort of thought it was just being overloaded, > > and maybe it is, but processes being stuck in D-state for such a long > > time doesn't seem right. And since you asked...
> Lots of paging by the sound of it. It is probably not "stuck in D > state" but "going in and out of D state a lot". The only case I'd > expect it to stay in D a lot would be if it is paging stuff in/out > and hits a scsi problem at which point it would stay stuck while the > scsi error handling kicked in but you'd have a log entry if so
Well, some bugs DO cause a "stuck in D state", but that case is recognizable by the system being able to "quiet down" with NO disk activity very easily.
This is just a case of frantic paging. Buy more RAM.
Roger.
-- ** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2137555 ** *-- BitWizard writes Linux device drivers for any device you may have! --* "I didn't say it was your fault. I said I was going to blame it on you."
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