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* git diff timing oddity
@ 2010-05-06  5:04 Jay Soffian
  2010-05-06  5:07 ` Jay Soffian
  2010-05-06  5:08 ` Jeff King
  0 siblings, 2 replies; 3+ messages in thread
From: Jay Soffian @ 2010-05-06  5:04 UTC (permalink / raw)
  To: git

git version 1.7.1, Mac OS X 10.6.3, largish repo (42K files, 35K
commits, well packed ~ 1GB). Difference between origin and HEAD is a
single commit.

$ time git diff --stat origin  >/dev/null

real	0m0.942s
user	0m0.713s
sys	0m0.223s

$ time git diff --stat origin  >/dev/null

real	0m0.944s
user	0m0.712s
sys	0m0.227s

$ time git diff --stat origin  >/dev/null

real	0m0.944s
user	0m0.712s
sys	0m0.225s

$ time git diff --stat origin HEAD >/dev/null

real	0m0.022s
user	0m0.006s
sys	0m0.012s

$ time git diff --stat origin HEAD >/dev/null

real	0m0.022s
user	0m0.006s
sys	0m0.013s

$ time git diff --stat origin HEAD >/dev/null

real	0m0.023s
user	0m0.006s
sys	0m0.013s

These should be identical commands, so why is the "origin HEAD" form
running an order of magnitude faster?

j.

^ permalink raw reply	[flat|nested] 3+ messages in thread

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2010-05-06  5:04 git diff timing oddity Jay Soffian
2010-05-06  5:07 ` Jay Soffian
2010-05-06  5:08 ` Jeff King

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