Re: [bug-diffutils] Multithreading support?

[David Balažic]

On 12 August 2013 23:07, David Balažic <address@hidden> wrote:
> On 12 August 2013 22:43, Paul Eggert <address@hidden> wrote:
>> Is 'cmp -s' significantly faster than plain 'cmp'?
>
> I tried now ubuntu 13.04 32 bit and cmp is faster there: 99% CPU , 120 MB/s
>
> cmp -s uses less CPU, about 60% and throughput is full (130 MB/s)
>
> sysresCD cmp -s : yes, again lower cpu usage (66%) and faster
> operation (130 MB/s)

ubuntu 64 bit:
cmp 80% 130 MB/s
cmp -s 60 % 130 MB/s

in the last case top shows 6% user, 30% sys, 48% idle and 15% wa, if this helps.
(note the CPU has two cores, so the last values should be multiplied with 2)
David