On 2015-10-22, Norihiro Tanaka wrote: > On Wed, 21 Oct 2015 13:09:14 -0700 > Gary Johnson 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.
I did. That's what I meant by "not including any slow times clearly due to updating caches." Sorry I wasn't more clear. The system has 12 GB of RAM. I'll provide more information, as requested previously, when I get a little more time. Regards, Gary
