[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: make: dynamic scaling of maxJobs ?
On Mon, Aug 05, 2013 at 05:12:40AM +1000, matthew green wrote:
> load isn't going to great heuristic for this. when a job is
> waiting on disk/nfs io, it is +1 to the load. so "idle" things
> add to the load, espcially in a build.
There are other cases where idle processes end up incrementing the
'load average', and it is also possible to generate very high cpu load
with a low load average!
An example of the former is a device-driver 'helper' process that
always sleeps non-interruptably.
The latter can happen when processes to a moderate amount of work
on every timer tick - eg audio processing of (say) RTP streams.
David Laight: david%l8s.co.uk@localhost
Main Index |
Thread Index |