Re: [PATCH v2 0/7] Final optimization batch (#15): use memory pools

From: Jeff King <peff@peff.net>
Date: Jul 29, 2021, 16:23 UTC
Message-ID: <YQLV/MTQ+MkxUBSn@coredump.intra.peff.net>
In-Reply-To: <YQLVPN9n5E1Yvi/q@coredump.intra.peff.net>

On Thu, Jul 29, 2021 at 12:20:13PM -0400, Jeff King wrote:

Show 5 quoted lines

> I assume your tests are just done using the regular glibc allocator. I
> also wondered how plugging in a better allocator might fare. Here are
> timings I did of your mega-renames case with three binaries: one built
> with USE_MEMORY_POOL set to 0, one with it set to 1, and one with it set
> to 0 but adding "-ltcmalloc" to EXTLIBS via config.mak.

Oh, btw, I wasn't able to apply your series from the list on top of en/ort-perf-batch-14 (there are some problems in patch 4, and "am -3" says my clone of git.git is missing some of the pre-image sha1s). I fetched ort-perf-batch-15 from https://github.com/newren/git and timed that, which I imagine is the same. But you may need to tweak the patches so that Junio can pick them up.

-Peff