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bug#36630: [PATCH] guix: parallelize building the manual-database


From: Ludovic Courtès
Subject: bug#36630: [PATCH] guix: parallelize building the manual-database
Date: Tue, 31 Mar 2020 15:02:47 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)

Hi Arne,

Arne Babenhauserheide <address@hidden> skribis:

> I now reduced the thread count to exactly 2 (to avoid running into
> resource troubles; I hope that two should be safe) and added a mutex for
> status messages to ensure that writes don’t overlap.

It’s been 9 months but I finally committed a slightly modified variant
as ef4b5f2fed3ca13a0e15a821ba7e561cd4395aa6.  It turns out that the
mutex was unnecessary as ports are thread-safe.

As noted in the log, I see a 36% speedup on my SSD laptop with 4 cores
(slightly less with 2 cores).  It’s not great, but still an improvement!

Thanks,
Ludo’.





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