On Mon, Jan 18, 2010 at 17:30, Ville Skyttä <ville.skytta@xxxxxx> wrote: > On Monday 18 January 2010, Seth Vidal wrote: >> On Mon, 18 Jan 2010, Farkas Levente wrote: >> > the real bottleneck is not the rpmbuild itself (with ccache it cab be >> > very fast), but the mock surroundings. suppose there is build which >> > takes about 2 minutes and in mock it takes about 5 minutes:-( >> > most of the time is in yum, python tar, gzip etc which all use only one >> > cpu/core and it's very slow! >> >> the tar and gzip are mostly BUILDING the cache. > > I've been using lzop as the root cache compressor, it makes a difference over > gzip here, especially when compressing the cache, but somewhat also when > decompressing it. Add this to /etc/mock/site-defaults.cfg to try it out: > > config_opts['plugin_conf']['root_cache_opts']['compress_program'] = 'lzop' > config_opts['plugin_conf']['root_cache_opts']['extension'] = '.lzo' > > For boxes with multiple cores, pigz (and maybe even pbzip2) might be worth > looking into. I haven't tried these myself. why we compress at all? disk space is cheep. can we speed up mock to somehow totally disable compressing root_cache? it used the case but store and restore in an uncompressed way? thanks. -- Levente "Si vis pacem para bellum!" -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
