From: Michael Heerdegen <michael_heerdegen@web.de>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: Eli Zaretskii <eliz@gnu.org>,
57079@debbugs.gnu.org, stefan@marxist.se,
Juri Linkov <juri@linkov.net>
Subject: bug#57079: 29.0.50; Performance of seq-uniq is not very good
Date: Sat, 13 Aug 2022 01:59:11 +0200 [thread overview]
Message-ID: <87lertnhdc.fsf@web.de> (raw)
In-Reply-To: <878rntr49y.fsf@gnus.org> (Lars Ingebrigtsen's message of "Fri, 12 Aug 2022 15:16:09 +0200")
Lars Ingebrigtsen <larsi@gnus.org> writes:
> > delete-dups is faster because its implementation uses the hash table.
>
> Good point. I've now made seq-uniq do the same, and this makes the test
> case go from 1.7s to 0.07s.
Good.
I think a large amount of non-standard test functions is of the form
(lambda (x y) (TEST (F x) (F y)))
where TEST is a standard test function (equal or eq) and F some function
that CL calls key function.
This case can still be supported using hash tables. So I think it could
make sense to add support for an additional optional KEY argument.
Michael.
next prev parent reply other threads:[~2022-08-12 23:59 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-09 16:11 bug#57079: 29.0.50; Performance of seq-uniq is not very good Stefan Kangas
2022-08-09 16:47 ` Eli Zaretskii
2022-08-09 16:57 ` Lars Ingebrigtsen
2022-08-09 17:07 ` Eli Zaretskii
2022-08-09 17:21 ` Lars Ingebrigtsen
2022-08-09 17:45 ` Stefan Kangas
2022-08-09 17:18 ` Eli Zaretskii
2022-08-09 17:23 ` Lars Ingebrigtsen
2022-08-09 17:36 ` Eli Zaretskii
2022-08-09 17:50 ` Eli Zaretskii
2022-08-09 17:52 ` Lars Ingebrigtsen
2022-08-09 17:59 ` Eli Zaretskii
2022-08-09 18:03 ` Lars Ingebrigtsen
2022-08-09 18:16 ` Eli Zaretskii
2022-08-09 19:35 ` Juri Linkov
2022-08-12 13:16 ` Lars Ingebrigtsen
2022-08-12 23:59 ` Michael Heerdegen [this message]
2022-08-13 11:50 ` Lars Ingebrigtsen
2022-08-13 20:24 ` Michael Heerdegen
2022-08-15 6:39 ` Lars Ingebrigtsen
2022-08-15 23:37 ` Michael Heerdegen
2022-08-17 11:01 ` Lars Ingebrigtsen
2022-08-20 3:17 ` Michael Heerdegen
2022-08-20 9:19 ` Lars Ingebrigtsen
2022-08-20 15:13 ` Drew Adams
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