----- "Michal Nowak" <mnowak@xxxxxxxxxx> wrote: > ----- "Ian Lance Taylor" <iant@xxxxxxxxxx> wrote: > > > Hi, Tom Tromey pointed me at your message > > > http://lists.fedoraproject.org/pipermail/devel/2010-March/133039.html > > Hi Ian. > > > I was curious what you are timing when you compare ld and gold. Is > > that the total time that it takes to build the package, or just the > > time that the linker runs? > > You may be familiar with Mock which builds source RPMs in chroot. Mock > > prepares build root (e.g. fedora-12-x86_64), installs BuildRequires, > and builds given SRPM. Such a build should be repeatable. What is > done > is that run of this `mock' process is timed -- bad thing obviously > here > is that the build time includes part which is not related to build > itself > (i.e. build root preparation, package installation), however good is > that > the unrelated time is pretty much constant among runs. > > If anyone knows hot to measure just the build time, I'd be glad to > know. > > > As you mention, xulrunner and thunderbird are much slower, which is > > rather odd and completely contrary to my own testing. Do you know > if > > those builds use linker scripts? Do you have the build logs? > > Unfortunately logs are gone with my yesterday's reinstall. However I > am > building xulrunner and thunderbird right now on different box. Will > let > you know till Monday. > > No idea about the linking script since logs are gone. > > > Also, what sort of machine were you running this on, and how much > RAM > > did it have? > > Dualcore, Intel(R) Xeon(R) CPU 5110 @ 1.60GHz, 2GB RAM, 4GB swap. > Ian - > > I'd certainly like to get to the bottom of any cases where gold is > > significantly slower than GNU ld. > > > > I'm not on the devel@xxxxxxxxxxxxxxxxxxxxxxx mailing list. Run with gold was run first, build root was cleared afterwards and run with ld was run then. gold seems to be way slower. GNU GOLD ======== [ PACKAGES xulrunner thunderbird REBUILD ] ld: CVS snapshot from date: 20100312 gcc: gcc-4.4.3-4.fc12 (likely, just a guess) kernel: Linux <BLANK> 2.6.32.9-70.fc12.x86_64 #1 SMP Wed Mar 3 04:40:41 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux (from this machine) [1/2] Package: xulrunner-1.9.1.8-1.fc12 Time: 18:27.26 Size: 67M Status: PASS [2/2] Package: thunderbird-3.0.3-1.fc12 Time: 15:55.48 Size: 89M Status: PASS ============================================== TOTAL: 2 PASS: 2 FAIL: 0 GNU ld ====== [ PACKAGES xulrunner thunderbird REBUILD ] ld: binutils-2.19.51.0.14-37.fc12 (likely, just a guess) gcc: gcc-4.4.3-4.fc12 (likely, just a guess) kernel: Linux <BLANK> 2.6.32.9-70.fc12.x86_64 #1 SMP Wed Mar 3 04:40:41 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux (from this machine) [1/2] Package: xulrunner-1.9.1.8-1.fc12 Time: 10:00.12 Size: 66M Status: PASS [2/2] Package: thunderbird-3.0.3-1.fc12 Time: 9:37.08 Size: 87M Status: PASS ============================================== TOTAL: 2 PASS: 2 FAIL: 0 Here are the logs: http://people.redhat.com/psklenar/pub/ Michal -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
