From: Linus Torvalds <torvalds@linux-foundation.org>
To: "Carlos R. Mafra" <crmafra2@gmail.com>
Cc: Junio C Hamano <gitster@pobox.com>,
Git Mailing List <git@vger.kernel.org>
Subject: Re: Performance issue of 'git branch'
Date: Fri, 24 Jul 2009 13:36:13 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.2.01.0907241327410.3960@localhost.localdomain> (raw)
In-Reply-To: <20090723195548.GA28494@Pilar.aei.mpg.de>
On Thu, 23 Jul 2009, Carlos R. Mafra wrote:
>
> After 7 tests I got these,
>
> time:
>
> 0.61 +/- 0.08
Btw, I think 0.61s is still too much. Can you send me the output of
'strace -Ttt' on your machine?
It's entirely possible that it's all the actual binary (and shared
library) loading, of course. You do have a slow harddisk. But it takes
0.035s for me, and I'm wondering if there is something else than just CPU
speed and IO speed accounting for the 20x performance difference.
(That said, maybe 20x is right - my SSD latency almost certainly is 20x
better).
Linus
next prev parent reply other threads:[~2009-07-24 20:39 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-22 23:59 Performance issue of 'git branch' Carlos R. Mafra
2009-07-23 0:21 ` Linus Torvalds
2009-07-23 0:51 ` Linus Torvalds
2009-07-23 0:55 ` Linus Torvalds
2009-07-23 2:02 ` Carlos R. Mafra
2009-07-23 2:28 ` Linus Torvalds
2009-07-23 12:42 ` Jakub Narebski
2009-07-23 14:45 ` Carlos R. Mafra
2009-07-23 16:25 ` Linus Torvalds
2009-07-23 1:22 ` Carlos R. Mafra
2009-07-23 2:20 ` Linus Torvalds
2009-07-23 2:23 ` Linus Torvalds
2009-07-23 3:08 ` Linus Torvalds
2009-07-23 3:21 ` Linus Torvalds
2009-07-23 17:47 ` Tony Finch
2009-07-23 18:57 ` Linus Torvalds
2009-07-23 22:48 ` Newton-Raphson, was " Tony Finch
2009-07-23 23:24 ` Johannes Schindelin
2009-07-23 23:50 ` Tony Finch
2009-07-24 0:43 ` Johannes Schindelin
2009-07-23 3:18 ` Carlos R. Mafra
2009-07-23 3:27 ` Carlos R. Mafra
2009-07-23 3:40 ` Carlos R. Mafra
2009-07-23 3:47 ` Linus Torvalds
2009-07-23 4:10 ` Linus Torvalds
2009-07-23 5:13 ` Junio C Hamano
2009-07-23 5:17 ` Carlos R. Mafra
2009-07-23 4:40 ` Junio C Hamano
2009-07-23 5:36 ` Linus Torvalds
2009-07-23 5:52 ` Junio C Hamano
2009-07-23 6:04 ` Junio C Hamano
2009-07-23 17:19 ` Linus Torvalds
2009-07-23 16:07 ` Carlos R. Mafra
2009-07-23 16:19 ` Linus Torvalds
2009-07-23 16:53 ` Carlos R. Mafra
2009-07-23 19:05 ` Linus Torvalds
2009-07-23 19:13 ` Linus Torvalds
2009-07-23 19:55 ` Carlos R. Mafra
2009-07-24 20:36 ` Linus Torvalds [this message]
2009-07-24 20:47 ` Linus Torvalds
2009-07-24 21:21 ` Linus Torvalds
2009-07-24 22:13 ` Linus Torvalds
2009-07-24 22:18 ` david
2009-07-24 22:42 ` Linus Torvalds
2009-07-24 22:46 ` david
2009-07-25 2:39 ` Linus Torvalds
2009-07-25 2:53 ` Daniel Barkalow
2009-08-07 4:21 ` Jeff King
2009-07-24 22:54 ` Theodore Tso
2009-07-24 22:59 ` Shawn O. Pearce
2009-07-24 23:28 ` Junio C Hamano
2009-07-26 17:07 ` Avi Kivity
2009-07-26 17:16 ` Johannes Schindelin
2009-07-24 23:46 ` Carlos R. Mafra
2009-07-25 0:41 ` Carlos R. Mafra
2009-07-25 18:04 ` Linus Torvalds
2009-07-25 18:57 ` Timo Hirvonen
2009-07-25 19:06 ` Reece Dunn
2009-07-25 20:31 ` Mike Hommey
2009-07-25 21:02 ` Linus Torvalds
2009-07-25 21:13 ` Linus Torvalds
2009-07-25 23:23 ` Johannes Schindelin
2009-07-26 4:49 ` Linus Torvalds
2009-07-26 16:29 ` Theodore Tso
2009-07-26 7:54 ` Mike Hommey
2009-07-26 10:16 ` Johannes Schindelin
2009-07-26 10:23 ` demerphq
2009-07-26 10:27 ` demerphq
2009-07-25 21:04 ` Carlos R. Mafra
2009-07-23 16:48 ` Anders Kaseorg
2009-07-23 19:03 ` Carlos R. Mafra
2009-07-23 0:23 ` SZEDER Gábor
2009-07-23 2:25 ` Carlos R. Mafra
-- strict thread matches above, loose matches on Subject: below --
2009-07-26 23:21 George Spelvin
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