Re: Performance regression in git fetch between 1.8.3.4 and 1.8.5.3

2014-01-31 Thread Jeff King 
On Fri, Jan 31, 2014 at 09:02:15PM +, brian m. carlson wrote:

 At work, we recently upgraded our git version from 1.8.3.4 to 1.8.5.3.
 We've noticed a significant performance regression in git fetch.  The
 numbers below are for an up-to-date branch (that is, no data is actually
 being fetched) for a git-over-ssh remote on our gitorious server.

Is it better with v1.9-rc1? There was a slowdown in v1.8.4.2 that I
addressed with commit 200abe7 (which is slated for v1.9).

-Peff
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Re: Performance regression in git fetch between 1.8.3.4 and 1.8.5.3

2014-01-31 Thread brian m. carlson 
On Fri, Jan 31, 2014 at 04:35:05PM -0500, Jeff King wrote:
 On Fri, Jan 31, 2014 at 09:02:15PM +, brian m. carlson wrote:
 
  At work, we recently upgraded our git version from 1.8.3.4 to 1.8.5.3.
  We've noticed a significant performance regression in git fetch.  The
  numbers below are for an up-to-date branch (that is, no data is actually
  being fetched) for a git-over-ssh remote on our gitorious server.
 
 Is it better with v1.9-rc1? There was a slowdown in v1.8.4.2 that I
 addressed with commit 200abe7 (which is slated for v1.9).

Yes.  The time is much lower with 1.9-rc1:

  brianc ok # for i in `seq 1 3`; do time git fetch; done
  git fetch  0.90s user 0.18s system 74% cpu 1.447 total
  git fetch  0.88s user 0.20s system 74% cpu 1.456 total
  git fetch  0.88s user 0.19s system 74% cpu 1.438 total

I'll open a case to get it updated once 1.9 is finally released.  Thanks
for your suggestion.

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