From: "Ludovic Courtès" <ludo@gnu.org>
To: Julien Lepiller <julien@lepiller.eu>
Cc: 39728@debbugs.gnu.org, Pierre Neidhardt <mail@ambrevar.xyz>,
zimoun <zimon.toutoune@gmail.com>
Subject: [bug#39728] [PATCH v2] Allow parallel downloads and builds
Date: Fri, 26 Nov 2021 11:16:16 +0100 [thread overview]
Message-ID: <87r1b39q8f.fsf@gnu.org> (raw)
In-Reply-To: <20211125140145.1c00decc@tachikoma.lepiller.eu> (Julien Lepiller's message of "Thu, 25 Nov 2021 14:01:45 +0100")
Hi!
Julien Lepiller <julien@lepiller.eu> skribis:
> I would still say yes, because the output from berlin is often much
> less than my throughput. With multiple downloads in parallel it at
> least feels quicker, probably because I can download at full speed.
It would be nice to measure that because like I wrote, I think we’re
pretty much network-bound these days, at least with zstd and
uncompressed downloads.
> In any case, I see often a build start while downloads are in progress,
> so I think it's still a win if you can get a few derivations built
> while waiting for a big download to finish at the same time :)
True! Overlapping downloads and builds sounds like a good idea.
> At some point we might want to prioritize builds/downloads that help
> unlock as much builds as possible early, so we don't have builds
> waiting for downloads.
Right now the daemon starts with substitutes and builds afterwards.
BTW, we’re assuming downloads = substitutes in this whole discussion,
but we could/should take fixed-output derivations into account too.
I’ll take a closer look later on…
Thanks,
Ludo’.
next prev parent reply other threads:[~2021-11-26 10:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-21 22:53 [bug#39728] [PATCH] Allow parallel downloads and builds Julien Lepiller
2020-02-24 21:23 ` Ludovic Courtès
2020-02-25 15:21 ` zimoun
2020-02-25 15:39 ` Julien Lepiller
2020-02-26 10:36 ` Pierre Neidhardt
2021-11-21 22:49 ` [bug#39728] [PATCH v2] " Julien Lepiller
2021-11-25 12:53 ` Ludovic Courtès
2021-11-25 13:01 ` Julien Lepiller
2021-11-26 10:16 ` Ludovic Courtès [this message]
2021-07-14 2:49 ` [bug#39728] [PATCH] " Maxim Cournoyer
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