On Mon, Jan 18, 2010 at 17:30, Ville Skyttä <ville.skytta(a)iki.fi> 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:
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?
Levente "Si vis pacem para bellum!"