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Re: [perl.git] branch blead, updated. v5.19.0-497-g1ebabb4

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Dave Mitchell
June 10, 2013 17:23
Re: [perl.git] branch blead, updated. v5.19.0-497-g1ebabb4
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On Mon, Jun 10, 2013 at 12:33:30PM -0400, George Greer wrote:
> At least for my Linux smokers, Benchmark.t test 15 fails not because
> the clocks are inconsistent but because the load average can reach
> over 100 at times depending on how many different smokes are
> running, especially since they almost all do "make -j" and
> TEST_JOBS=8. (The AddressSanitizer smokers don't use "make -j"
> because I kernel panic'd my machine once doing that.)  My machine
> has 4 physical, 8 virtual cores so it doesn't blow the timings too
> frequently but it does happen.
> A check for load average being "too high" after a failure to silence
> it might help at least in my cases.

Well, the test is failing fundamentally for one of two reasons: either
the amount of CPU burned (as reported by the OS as (times)[0]) for a given
amount of work is not constant, or there's a bug in Benchmark somewhere.

If the former, whether its caused by high load or some other reason, I'm
hoping my new change will detect this.

That he said that that that that is is is debatable, is debatable.

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