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Re: slow yum depsolve



On Sun, 2010-08-29 at 22:39 -0700, Curtis Doty wrote:
> seth vidal wrote:
> > On Sat, 2010-08-28 at 22:18 -0700, Curtis Doty wrote:
> >   
> >> Attempting to kickstart from the latest yum f13 everthing+updates repositories on an i7 system with a gazillion cores. But anaconda takes almost 5 minutes depsolving in the postselection step, even though a small set of packages are selected. It appears to be pegging only one cpu/core while the others all sit idle.
> >>
> >> Are there any plans/ways to speed this up?
> >>
> >> All the other steps just keep getting faster and faster. Especially when doing minimal install over gigabit. But the yum depsolve step seems to be getting slower.
> >>     
> >
> >
> > Did your system have lots and lots of disks or partitions?
> >   
> 
> Only 2 relatively small disks.
> 
> The entire system build takes under 9 minutes. About 2 minutes is spend
> actually installing packages, but over 4 minutes is depsolving. Maybe
> this is a quirk with my setup? But when I ran top in a shell it seemed
> to be pegging one cpu thread while everything else was idle.
> 


there was a bug with disks where it would keep adding the same pkgs to
the transaction set and that made it take forever and a day but it
shouldn't with only 2 disks. The only other thing I can think of is - is
your main or updates repo over a dicey network connection?

that would make it take a while - just to download the repodata it
needs.

-sv



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