Re: [PATCH 2/2] Implement a simple delta_base cache

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From: Avi Kivity <avi@...>

To: Morten Welinder <mwelinder@...>

Cc: Linus Torvalds <torvalds@...>, Junio C Hamano <junkio@...>, Nicolas Pitre <nico@...>, Git Mailing List <git@...>

Subject: Re: [PATCH 2/2] Implement a simple delta_base cache

Date: Sunday, March 18, 2007 - 2:28 am

Morten Welinder wrote:
quoted text>>         samples  %        app name                 symbol name
>>         41527    15.6550  git                      strlen
>
> Almost 16% in strlen?  Ugh!
>
> That's a lot of strings, or perhaps very long strings.  Or a profiling 
> bug.
>

Or maybe strlen() is the first function to touch the page/cacheline.


-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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Messages in current thread:

cleaner/better zlib sources?, Linus Torvalds, (Thu Mar 15, 9:04 pm)

Re: cleaner/better zlib sources?, Davide Libenzi, (Thu Mar 15, 9:33 pm)

Re: cleaner/better zlib sources?, Davide Libenzi, (Thu Mar 15, 10:06 pm)

Re: cleaner/better zlib sources?, Jeff Garzik, (Thu Mar 15, 9:11 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Thu Mar 15, 9:46 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Thu Mar 15, 9:54 pm)

Re: cleaner/better zlib sources?, Davide Libenzi, (Thu Mar 15, 10:43 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Thu Mar 15, 10:56 pm)

Re: cleaner/better zlib sources?, Davide Libenzi, (Thu Mar 15, 11:16 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Fri Mar 16, 12:21 pm)

Re: cleaner/better zlib sources?, Nicolas Pitre, (Fri Mar 16, 1:06 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Fri Mar 16, 1:51 pm)

Re: cleaner/better zlib sources?, Nicolas Pitre, (Fri Mar 16, 2:09 pm)

Re: cleaner/better zlib sources?, Jeff Garzik, (Fri Mar 16, 12:35 pm)

Re: cleaner/better zlib sources?, Shawn O. Pearce, (Fri Mar 16, 7:22 pm)

Re: cleaner/better zlib sources?, Nicolas Pitre, (Fri Mar 16, 1:12 pm)

Re: cleaner/better zlib sources?, Matt Mackall, (Fri Mar 16, 12:42 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Fri Mar 16, 12:51 pm)

Re: cleaner/better zlib sources?, Davide Libenzi, (Fri Mar 16, 12:24 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Fri Mar 16, 12:35 pm)

Re: cleaner/better zlib sources?, Davide Libenzi, (Fri Mar 16, 3:21 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Fri Mar 16, 8:01 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Fri Mar 16, 9:11 pm)

Re: cleaner/better zlib sources?, Nicolas Pitre, (Fri Mar 16, 11:28 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Sat Mar 17, 1:55 pm)

Re: cleaner/better zlib sources?, Linus Torvalds, (Sat Mar 17, 3:40 pm)

[PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 3:44 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 6:44 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 5:45 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Morten Welinder, (Sat Mar 17, 9:14 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Avi Kivity, (Sun Mar 18, 2:28 am)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 9:29 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 9:44 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Nicolas Pitre, (Sat Mar 17, 9:38 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 9:55 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Nicolas Pitre, (Sat Mar 17, 10:03 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 10:20 pm)

[PATCH 3/2] Avoid unnecessary strlen() calls, Linus Torvalds, (Sat Mar 17, 11:06 pm)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Junio C Hamano, (Sun Mar 18, 5:45 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Linus Torvalds, (Sun Mar 18, 11:54 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Junio C Hamano, (Mon Mar 19, 11:16 pm)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Linus Torvalds, (Tue Mar 20, 12:31 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Shawn O. Pearce, (Tue Mar 20, 12:39 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Linus Torvalds, (Tue Mar 20, 12:57 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Johannes Schindelin, (Mon Mar 19, 11:05 pm)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Shawn O. Pearce, (Mon Mar 19, 11:29 pm)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Shawn O. Pearce, (Mon Mar 19, 11:40 pm)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Linus Torvalds, (Tue Mar 20, 12:11 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Junio C Hamano, (Tue Mar 20, 1:44 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Shawn O. Pearce, (Tue Mar 20, 12:18 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Linus Torvalds, (Tue Mar 20, 12:45 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Linus Torvalds, (Sun Mar 18, 11:57 am)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Shawn O. Pearce, (Sun Mar 18, 5:38 pm)

Re: [PATCH 3/2] Avoid unnecessary strlen() calls, Linus Torvalds, (Sun Mar 18, 5:48 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Nicolas Pitre, (Sat Mar 17, 11:00 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 11:31 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Robin Rosenberg, (Sun Mar 18, 6:53 am)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sun Mar 18, 1:34 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Robin Rosenberg, (Sun Mar 18, 2:29 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, David Brodsky, (Mon Mar 19, 9:16 am)

Re: [PATCH 2/2] Implement a simple delta_base cache, Robin Rosenberg, (Tue Mar 20, 2:35 am)

Re: [PATCH 2/2] Implement a simple delta_base cache, David Brodsky, (Tue Mar 20, 5:13 am)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Tue Mar 20, 10:37 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Nicolas Pitre, (Tue Mar 20, 10:54 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Shawn O. Pearce, (Sun Mar 18, 5:25 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Julian Phillips, (Sun Mar 18, 1:30 am)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sun Mar 18, 1:23 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Junio C Hamano, (Sat Mar 17, 7:12 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 7:24 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Jon Smirl, (Sat Mar 17, 7:52 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Junio C Hamano, (Sat Mar 17, 6:37 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Nicolas Pitre, (Sat Mar 17, 9:13 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Junio C Hamano, (Sun Mar 18, 3:47 am)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 7:09 pm)

Re: [PATCH 2/2] Implement a simple delta_base cache, Linus Torvalds, (Sat Mar 17, 7:54 pm)

[PATCH 1/2] Make trivial wrapper functions around delta base..., Linus Torvalds, (Sat Mar 17, 3:42 pm)

Re: cleaner/better zlib sources?, Shawn O. Pearce, (Sat Mar 17, 1:19 am)

Re: cleaner/better zlib sources?, Matt Mackall, (Thu Mar 15, 9:14 pm)

Re: cleaner/better zlib sources?, Shawn O. Pearce, (Thu Mar 15, 9:10 pm)

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