From: Christopher Lemmer Webber <cwebber@dustycloud.org>
To: guix-devel@gnu.org
Subject: Re: Medium-term road map
Date: Mon, 27 Apr 2020 09:06:45 -0400 [thread overview]
Message-ID: <87wo61axi2.fsf@dustycloud.org> (raw)
In-Reply-To: <87pnbtwdh8.fsf@igalia.com>
Andy Wingo writes:
> On Sat 25 Apr 2020 15:37, Ludovic Courtès <ludo@gnu.org> writes:
>
>> 2. Performance. There are many things we can improve there, first and
>> foremost: the “Computing derivation” part of ‘guix pull’, Guile’s
>> compiler terrible time and space requirements
>
> I think I have a solution here, as discussed on IRC. Basic idea is to
> make a direct compiler from Tree-IL to bytecode, skipping the CPS step.
> The result won't be optimal in terms of generated code quality (I
> estimate on average 2x slowdown) but it will be very cheap to produce (I
> estimate 10x improvement in time, and going from O(n log n) space to
> O(n), with better constant factors. We'd use this compiler for -O0 or
> maybe even -O1 code.
>
> Got to spend a few days working it up tho!
>
> Andy
That sound like a nice path to an improvement!
next prev parent reply other threads:[~2020-04-27 13:06 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-25 13:37 Medium-term road map Ludovic Courtès
2020-04-25 16:23 ` Pierre Neidhardt
2020-05-03 20:13 ` Ludovic Courtès
2020-04-25 21:38 ` Jack Hill
2020-04-26 1:22 ` Josh Marshall
2020-05-03 20:18 ` Ludovic Courtès
2020-05-06 17:03 ` [EXT] " Thompson, David
2020-05-06 18:58 ` Efraim Flashner
2020-05-06 19:46 ` Jack Hill
2020-05-07 12:24 ` [EXT] " Thompson, David
2020-04-26 16:06 ` zimoun
2020-04-26 18:20 ` Christopher Baines
2020-05-03 20:07 ` Ludovic Courtès
2020-05-04 10:32 ` zimoun
2020-04-26 18:14 ` Christopher Baines
2020-05-03 20:11 ` Ludovic Courtès
2020-04-27 8:16 ` Andy Wingo
2020-04-27 13:06 ` Christopher Lemmer Webber [this message]
2020-04-30 21:27 ` Joshua Branson
2020-05-05 23:50 ` raingloom
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