Re: q: git-fetch a tad slow?

* Shawn O. Pearce [off-list ref] wrote:

Ingo Molnar [off-list ref] wrote:

quoted

Setup/background: distributed kernel testing cluster, [...]

Problem: i noticed that git-fetch is a tad slow:

  titan:~/tip> time git-fetch
  real    0m2.372s

Also, I wonder if you really need to fetch over SSH.  Doing a fetch 
over git:// is much quicker, as there is no SSH session setup 
overheads.

note that titan is a very beefy box, almost 3 GHz Core2Duo:

   model name      : Intel(R) Core(TM)2 CPU         E6800  @ 2.93GHz
   stepping        : 5
   cpu MHz         : 2933.331

server is 3 GHz. So if we have a quadratic overhead on number of 
branches, that's going to be quite a PITA.

I wonder if git-pack-refs + fetching only a single branch will get you 
closer to the tip-fetch time.

should i pack on both repos? I dont explicitly pack anything, but on the 
server it goes into regular gc runs. (which will pack most stuff, 
right?)

	Ingo