Bill - Thanks for this excellent chunk of info. Now - how do we get this into the uptime man page replacing the phrase "load averages" ?
On Fri, Oct 11, 2002 at 03:23:27PM -0400, Ward William E DLDN wrote: > It reflects that you have processes in the R state (Run state) > or in the "Ready" state equaling 128% of the time for the last > minute. > > What that means is that currently, your machine (I'm assuming > you have a single CPU, aren't using Intels Hyperthreading, etc.) > is keeping a constant load on the CPU; there are few idle cycles. > That's GOOD, believe it or not, since it means you're getting > the CPU utilization that you want. > > However, too much of a good thing.... > > At low levels (for a single CPU, <~3.0 load) are ok, as it means > the CPU always has something to do (well, as long as you ALSO > have sufficient memory so that you're not page thrashing; you > can check that many ways, but you can tell instantly one way > or another if you have check Top)... but you don't want it to > STAY that high for too long, at least when you want to have > interactive stuff going on (of course, if you're only running > batch jobs, it doesn't matter). > > Of course, the CPU can only do 100% load, so you have processes > waiting to run; as long as the load doesn't steadily increase, > though, it's not a huge problem. On some of the systems I > work on, load can shoot as high as 1000 (well, times the CPU; > on my Origin 2000, that's 32000%) for brief periods, though > if it gets that high and stays there, I have problems. I've > SEEN as high (on a Red Hat Linux 6.2 box) as a load of 5400% > on a single CPU; needless to say, it took quite a while to > get the machine back under control! > > Check top though to see what process is using so much CPU; > if it's a SINGLE process, perhaps it's become a run away process? > > Bill Ward -- Jeff Kinz, Director, Emergent Research, Hudson, MA. "[EMAIL PROTECTED]" "[EMAIL PROTECTED]" copyright 2002. Use is restricted. Any use is an acceptance of the offer at http://users.rcn.com/jkinz/policy.html. (o- -o) //\ eLviintuaxbilse /\\ V_/_ _\_V -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list
