[darcs-users] darcs2 much slower than darcs1 on big repo

Alan Bram alan.bram at oracle.com
Fri Aug 15 01:38:44 UTC 2008


Hello again,

> Let us know if you have any new observations or upgrading ghc/darcs
> makes a noticable difference.

I built GHC 6.8.3 from source (a plain old tarball, not a Debian
package).  Then, using that, I compiled darcs (the version right out
of the repo at darcs.net).

This works much better!!!

The same simple darcs operations that I was complaining about
previously now run on the order of 0.6 seconds.  (Previously they were
taking nearly 10 seconds.)  This is quite acceptable.

By the way, I couldn't help noticing that it's still a bit slower than
the (very impressive) 0.1 seconds I used to get for a "darcs w".  It
turns out that if I repeat the exact same experiment, except without
specifying --darcs-2 on the "darcs init" command, then I do get back
to the even faster 0.1 second range (even using the darcs2 executable
that I compiled).

It appears that the old repo format works a little faster than the
new, in my case.  Does that make sense?

Anyway, thanks to you all for the hints.  I'm content now.


Cheers,
 - arb



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