Messages in this thread | | | Date | Fri, 6 Mar 2015 10:07:31 +0100 | From | Peter Zijlstra <> | Subject | Re: NMI watchdog triggering during load_balance |
| |
On Thu, Mar 05, 2015 at 09:05:28PM -0700, David Ahern wrote: > Since each domain is a superset of the lower one each pass through > load_balance regularly repeats the processing of the previous domain (e.g., > NODE domain repeats the cpus in the CPU domain). Then multiplying that > across 1024 cpus and it seems like a of duplication.
It is, _but_ each domain has an interval, bigger domains _should_ load balance at a bigger interval (iow lower frequency), and all this is lockless data gathering, so reusing stuff from the previous round could be quite stale indeed.
| |