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Re: [PATCH 1/2] bswap.h: drop unaligned loads

From
Carlo Arenas <carenas@gmail.com>
Date
Sep 25, 2020, 09:05 UTC
Message-ID
<CAPUEspjpUeaqCCuBJpQLSTv=C_P4f5h22HoTPm9+9rB7k0NkaQ@mail.gmail.com>
In-Reply-To
<20200925011348.GA1392312@camp.crustytoothpaste.net>

On Thu, Sep 24, 2020 at 6:15 PM brian m. carlson <sandals@crustytoothpaste.net> wrote:

Show 5 quoted lines
> On 2020-09-24 at 19:21:11, Jeff King wrote:
> >   [stock]
> >   Benchmark #1: t/helper/test-tool sha1 <foo.rand
> >     Time (mean ± σ):      6.638 s ±  0.081 s    [User: 6.269 s, System: 0.368 s]
> >     Range (min … max):    6.550 s …  6.841 s    10 runs
slightly offtopic but what generates this nicely formatted output?
> I cannot speak for s390, since I have never owned one

I happen to be lucky enough to have access to one (RHEL 8.2/z15, gcc 8.3.1) and seems (third consecutive run):

stock: user: 7.555s, system: 1.191s -DNO_UNALIGNED_LOADS: user: 7.561s, system: 1.189s

Carlo
Previous: brian m. carlsonNext: Jeff King
Message 6 of 9 in “drop unaligned loads”
  1. 0/2 drop unaligned loadsJeff King, Sep 24, 2020
  2. 1/2 bswap.h: drop unaligned loadsJeff King, Sep 24, 2020
  3. René ScharfeSep 24, 2020
  4. Jeff KingSep 25, 2020
  5. brian m. carlsonSep 25, 2020
  6. Carlo ArenasSep 25, 2020
  7. Jeff KingSep 25, 2020
  8. Thomas GuyotSep 25, 2020
  9. 2/2 Revert "fast-export: use local array to store anonymized oid"Jeff King, Sep 24, 2020

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