From: Danny Milosavljevic <dannym@scratchpost.org>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: guix-devel <guix-devel@gnu.org>
Subject: Re: Cuirass news
Date: Mon, 19 Feb 2018 16:35:06 +0100 [thread overview]
Message-ID: <20180219163506.2037e56e@scratchpost.org> (raw)
In-Reply-To: <877erfqhy4.fsf@gnu.org>
Hi Ludo,
On Thu, 15 Feb 2018 00:17:55 +0100
ludo@gnu.org (Ludovic Courtès) wrote:
> Turns out creating the relevant indexes helps a lot, unsurprisingly I
> guess:
>
> https://git.savannah.gnu.org/cgit/guix/guix-cuirass.git/commit/?id=db27955ad3fae260ee2aa4bace8dd6a4115d338c
Yup. It's a tradeoff because now the DBMS has to update the indices every time
you insert or update, but reading is now faster.
I guess we query more than we build so it's fine.
> I also discovered SQLite’s “EXPLAIN QUERY PLAN”, which is pretty cool:
>
> https://www.sqlite.org/lang_explain.html
Yup :)
> With that /latestbuilds still usually takes a bit more than 2 seconds.
> This could be due to the repeated ‘Outputs’ queries via ‘db-get-outputs’.
Oh yeah, I wanted to optimize that. It won't be that nice but it will
be faster.
First, I'll send a patch simplifying db-get-builds while retaining the
current functionality.
next prev parent reply other threads:[~2018-02-19 15:35 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-24 22:12 Cuirass news Ludovic Courtès
2018-01-25 10:55 ` Mathieu Othacehe
2018-01-25 10:59 ` Mathieu Othacehe
2018-01-25 13:09 ` Ludovic Courtès
2018-01-26 14:30 ` Danny Milosavljevic
2018-01-27 16:01 ` Ludovic Courtès
2018-01-27 17:18 ` Danny Milosavljevic
2018-01-27 19:12 ` Danny Milosavljevic
2018-01-28 21:47 ` Ludovic Courtès
2018-01-28 22:23 ` Danny Milosavljevic
2018-01-29 9:57 ` Andy Wingo
2018-02-08 13:37 ` Ludovic Courtès
2018-02-08 16:29 ` Danny Milosavljevic
2018-02-08 22:21 ` Ludovic Courtès
2018-02-08 23:05 ` Danny Milosavljevic
2018-02-09 6:17 ` Gábor Boskovits
2018-02-09 9:41 ` Ludovic Courtès
2018-02-09 11:29 ` Danny Milosavljevic
2018-02-09 16:53 ` Ludovic Courtès
2018-02-09 17:06 ` Danny Milosavljevic
2018-02-10 11:18 ` Ludovic Courtès
2018-02-13 9:12 ` Danny Milosavljevic
2018-02-14 13:43 ` Ludovic Courtès
2018-02-14 23:17 ` Ludovic Courtès
2018-02-19 15:35 ` Danny Milosavljevic [this message]
2018-02-19 15:35 ` [PATCH] database: Simplify 'db-get-builds' Danny Milosavljevic
2018-02-19 17:52 ` [PATCH] database: db-get-builds: Inline output selection Danny Milosavljevic
2018-02-19 22:08 ` Cuirass news Danny Milosavljevic
2018-03-02 13:21 ` Ludovic Courtès
2018-03-02 22:06 ` Ludovic Courtès
2018-03-02 23:29 ` Danny Milosavljevic
2018-02-14 23:21 ` Ludovic Courtès
2018-01-25 21:06 ` Ricardo Wurmus
2018-01-26 11:12 ` Ludovic Courtès
2018-01-25 22:28 ` Danny Milosavljevic
2018-01-26 10:47 ` Ludovic Courtès
2018-01-28 12:33 ` Cuirass frontend Danny Milosavljevic
2018-01-29 17:42 ` Ludovic Courtès
2018-01-26 0:46 ` Cuirass news Danny Milosavljevic
2018-01-27 17:27 ` Danny Milosavljevic
2018-01-28 21:48 ` Ludovic Courtès
2018-01-26 17:55 ` Jan Nieuwenhuizen
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