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  Re: I don't get it
  By: Gamgee to nelgin on Mon Jun 23 2025 07:52 am

Howdy,

 >  > top - 02:53:43 up 27 days, 12:08,  1 user,  load average: 60.40, 26.47,
 >
 >  > 124% cpu is nothing unusual. I have 4 cpus. There's no real reason for
 >  > the system to behitting a 60 load average.
 >
 > With 4 CPUs, a load average of 4.0 indicates that all 4 CPUs are at 100%
 > capacity.  The 60 indicates that there are a *LOT* of process waiting for
 > their turn in the queue for CPU attention.  It's almost not possible to be
 > that overloaded.  Better check the cooling system on those CPUs...

Actually not completely accurate.

The load average is a measure of processes who "didnt" get the CPU when they
were scheduled to use it. Its possible to have load average above number of
CPUs, because of other reasons - the most common I've seen is disk I/O (and
the CPU's could be fairly idle).

Given your swap is full, and your memory utilisation is high, I'm guessing
your system is thrashing - spending too much time swapping memory pages in and
out (for the processes that want to run), only to swap them back out again
when that processes time is up - causing that process (or the next one) to
miss it's CPU time slot.

Your load average can also climb high because of disk errors, where the kernel
spends too much time on a blocked read (I/O error), and thus scheduled
processes miss their slot.


...ëîåï

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