From: Andy Wingo <wingo@pobox.com>
To: ludo@gnu.org (Ludovic Courtès)
Cc: guile-devel@gnu.org
Subject: Re: wip-cse
Date: Tue, 24 Apr 2012 20:41:38 +0200 [thread overview]
Message-ID: <87397tt1jx.fsf@pobox.com> (raw)
In-Reply-To: <87mx61ytve.fsf@gnu.org> ("Ludovic Courtès"'s message of "Tue, 24 Apr 2012 18:31:01 +0200")
Heya Ludo,
On Tue 24 Apr 2012 18:31, ludo@gnu.org (Ludovic Courtès) writes:
> Andy Wingo <wingo@pobox.com> skribis:
>
>> I spent some time poking at vlists and ended up squeezing out a little
>> bit of performance.
>
> Any figures?
Well, last time I checked, with the patch compiling peval.scm was 2.10
seconds, compared to 2.35 without. Not tiny, not huge.
> Did you try fiddling with ‘block-growth-factor’, as suggested earlier?
No I did not. Another thing one could fiddle with would be the block
size for a new list head. I feel like we need more metrics though: a
distribution of sizes of blocks, numbers of blocks in a vlist, hash
collisions per block, etc. I'll merge this to master soon and we can
check what impact the new hash function has on performance.
Andy
--
http://wingolog.org/
next prev parent reply other threads:[~2012-04-24 18:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-16 19:56 wip-cse Andy Wingo
2012-04-16 21:36 ` wip-cse Ludovic Courtès
2012-04-16 22:56 ` wip-cse Andy Wingo
2012-04-16 23:26 ` wip-cse Andy Wingo
2012-04-17 12:42 ` wip-cse Ludovic Courtès
2012-04-24 8:20 ` wip-cse Andy Wingo
2012-04-24 16:31 ` wip-cse Ludovic Courtès
2012-04-24 18:41 ` Andy Wingo [this message]
2012-04-24 23:14 ` wip-cse Ludovic Courtès
2012-04-25 9:53 ` wip-cse Andy Wingo
2012-04-25 14:10 ` wip-cse Ludovic Courtès
2012-04-25 16:42 ` wip-cse Andy Wingo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/guile/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87397tt1jx.fsf@pobox.com \
--to=wingo@pobox.com \
--cc=guile-devel@gnu.org \
--cc=ludo@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).