Op 10 jun 2011, om 10:44 heeft Richard Purdie het volgende geschreven: > We've merged a number of things which should have helped performance > recently. Changes in my test included: > > * Splitting out the locale generation [not merged yet] > * Not building tar-replacement-native when we don't need it > * Cleaned up dependencies for native/nativesdk > * Cleaned up dependencies for all-arch packages > * Reduced dbus-native dependencies > > The time for the benchmark timing test against master with the locale > split patch applied was: > > real 105m5.813s > user 386m39.170s > sys 59m40.250s > > so not that much different from where we have been :(. > > I did observe things through the build process: > > * The first part of the build was *fast* getting through the first 2000 > of 4295 tasks in about 10 minutes. > * The CPU usage was pretty much full for that time > * The next 5 minutes covered the next 150 tasks > * gettext-native didn't seem to get built until surprisingly late in > the process > * There was a highly serialised chain of gettext-native, libelf-native, > binutils-native, binutils-cross etc. > * Once eglibc/libgcc completed, processor usage was high again for the > rest of the build > > I'm hoping my BB_NUMBER_THREADS (12 on a quad core machine) was too high > causing too much context switching and as the build process might now be > more efficient, lowering it might help. I am a bit disappointed in those > numbers though.
Do you have pretty bootchart graphs for that? regards, Koen _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto