On Tue, 2004-08-03 at 17:03, Paul Gear wrote: > Reid Priedhorsky wrote: > > Hello everyone, > > > > /proc/loadavg currently reports the following: > > > > 0.96 0.98 0.78 1/116 23994 > > > > xload also reports roughly the same. > > > > But top and ps both report a nearly idle system (98% idle). What is going > > on? How can I find out what is causing my system to be so busy? > > I've seen load averages of 14 and 16 when the CPU usage was on 10%. The > two are usually, but not necessarily, related. There are certain types > of work where this behaviour will be seen. Even low amounts of I/O to a > slow device, if done by enough processes could cause this. Or how about a multi-threaded App server running hundreds(thousands in some cases) of servlets a minute... I admin'd a 32 Processor, 32GB of Memory machine that was capable of running a couple of thousand servlets a minute. The load average on this machine usually stood at about 120-150 on a busy day. On rush days, sometime 270+. With no effect on inter-active logins or performance... though I did have to re-configure some of the other services to accept connections at high LA. (like the MTA) -- greg, greg@gregfolkert.net The technology that is Stronger, better, faster: Linux
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