On Wed, 21 Oct 2015 13:09:14 -0700 Gary Johnson <garyj...@spocom.com> wrote:
> I also built the snapshot successfully on a Fedora 17 system that I > use for real work. I just ran a performance test, FWIW. I searched > recursively in our source hierarchy of 6044 regular files and 1102 > directories for a simple string. > > time grep -Rin mystring src > /dev/null > > Here are the results, averaged over three trials each, not including > any slow times clearly due to updating caches. > > 2.12 2.21 2.21.78-7da30 > ----- ----- ----- > real 18.0s 1.08s 2.36s > user 17.8s 0.96s 2.24s > sys 0.12s 0.11s 0.10s > > Version 2.12 was /bin/grep. The other two versions I built myself. > > Regards, > Gary If they are measured for first scan, could you retry second or later scans, i.e. all input files is on memory? I think physical read time for disk should be eliminated. Thanks, Norihiro
