Re: git-daemon on NSLU2

On 8/24/07, Jon Smirl [off-list ref] wrote:

We're going something wrong in git-daemon. I can clone the tree in
five minutes using the http protocol. Using the git protocol would
take 24hrs if I let it finish.

20Mb/s to kernel.org
time git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
real    2m34.629s

20Mb/s to kernel.org
time git clone http://www.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
real    3m52.203s

Same kernel from my NSLU2 over http (100Mb/s)
time git clone http://jonsmirl.is-a-geek.net/apache2-default/mpc.git
real    2m36.227s

Using git protocol to nslu2 takes 24hrs

On 8/24/07, Nicolas Pitre [off-list ref] wrote:

Try running "git repack -a" directly on the NSLU2.  You should have the
same performance problems as with a clone.

This is true, it would take over 24hrs to finish.

Is their a reason why initial clone hasn't been special cased? Why
can't initial clone just blast over the pack file already sitting on
the disk?

I also wonder if a little application of some sorting to in-memory
data structures could help with the random IO patterns. I'm getting
the same data out of a stupid HTTP server and it doesn't go all IO
bound on me so a solution has to be possible.

-- 
Jon Smirl
jonsmirl@gmail.com