[LTP] [PATCH v4 3/7] fzsync: Add long running thread support and deviation stats

Richard Palethorpe rpalethorpe@suse.de
Fri Sep 29 11:44:43 CEST 2017


Hello,

Cyril Hrubis writes:

> Hi!
>> This does not replace the delay method of synchronisation which can be used in
>> addition to the new method. Also the precision of the averages has been
>> reduced because double precision appears to be unnecessary.
>
> Just a quick question, have you tested this on arm as well? The x86 FPU
> computes with greater than float precission internally and I've seen a
> cases where code would run perfectly fine on x86 with floats but failed
> horrinbly on arm.

Ah, that is interesting. However I tested it again on ARM and the
figures appear to be the same. I think the average is fairly safe from
accumulative rounding errors.

--
Thank you,
Richard.


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