On 12 August 2013 23:07, David Balažic <[email protected]> wrote: > On 12 August 2013 22:43, Paul Eggert <[email protected]> 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
