[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [HTCondor-users] CPU usage
- Date: Wed, 24 Jun 2015 15:51:27 +0100
- From: Brian Candler <b.candler@xxxxxxxxx>
- Subject: Re: [HTCondor-users] CPU usage
On 24/06/2015 14:54, Ben Cotton wrote:
I'm not convinced that limiting the number of slots will make a
difference, if the jobs themselves are multi-threaded - in that case,
won't they just use as many cores as are available?
So do you want the full machine to be available during the day if the
machine isn't being used, or do you always want some number of slots
reserved during working hours?
That's unless you there are cgroup restrictions. Even then I don't think
it will work unless Condor configures CPU bandwidth control:
BWC throttles processes in 100ms windows if they try to use more than
their allotted timeshare. There is a nice picture here: