So it is why I mentioned it is not real but a user-land approach of it can be understood.
> ---------------------------------------- > From: Sean Kamath <kam...@geekoids.com> > Sent: Tue May 31 11:07:46 CEST 2011 > To: Misc OpenBSD <misc@openbsd.org> > Subject: Re: I don't get where the load comes from > > > On May 31, 2011, at 12:33 AM, Abel Abraham Camarillo Ojeda wrote: > > > On Tue, May 31, 2011 at 2:24 AM, Francois Pussault > > <fpussa...@contactoffice.fr> wrote: > >> > >> load is not realy a cpu usage %. > >> In facts it is sum of many % (cpu real load, memory, buffers, etc...) > >> that explain why load can up over 5.0 for each cpu without any crash or > freeze > >> of the host. > >> > >> we should consider load as a "host" ressources %... this is not real of > course > >> but this is more real, than considering it as only cpu use. > >> > >> > > > > "The load average numbers give the number of jobs in the run queue averaged > > over 1, 5, and 15 minutes...." > > > > from top(1). > > > > As was mentioned earlier, no two systems agree on what "load average" is. > > Making statements about it for a particular system should be based on the code > for that system. > > Some systems count processes "runnable" if only the NFS back-end-storage were > available to page in the file. Other systems say it's in a wait state. The > former can easily lead to load averages in the 100s (or more) with a a CPU > idling at 99% (because everything's waiting on NFS). > > Some systems don't even agree on what it means to "average". > > Load Averages generally suck as a metric for system "business". Look at > interrupts and CPU time -- they're what matter. If you want to break out CPU > beyond "system", "user" and "idle", you can do that, too. > > Sean > Cordialement Francois Pussault 3701 - 8 rue Marcel Pagnol 31100 ToulouseB FranceB +33 6 17 230 820 B +33 5 34 365 269 fpussa...@contactoffice.fr
