Re: [PATCH] fast-export: ensure we traverse commits in topological order

From: Jeff King <peff@peff.net>
Date: Feb 11, 2009, 17:37 UTC
Message-ID: <20090211173717.GA19749@coredump.intra.peff.net>
In-Reply-To: <alpine.DEB.1.00.0902111618120.13279@intel-tinevez-2-302>

On Wed, Feb 11, 2009 at 04:18:28PM +0100, Johannes Schindelin wrote:

Show 6 quoted lines

> >   $ time git fast-export --all --signed-tags=strip >/dev/null
> >   real    1m6.013s
> >   user    1m3.840s
> >   sys     0m2.140s
> 
> Or a warm against a cold cache?

Nope. See how the CPU is more or less pegged in the numbers above? Cold cache looks like this:

  $ echo 3 >/proc/sys/vm/drop_caches
  $ time git fast-export --all --signed-tags=strip >/dev/null
  real    1m11.148s
  user    1m3.952s
  sys     0m0.760s

So only 7 extra seconds paging in. Hooray for packing. :)

-Peff