From: Sven Wischnowsky <wischnow@informatik.hu-berlin.de>
To: zsh-workers@sunsite.auc.dk
Subject: Re: optimisations
Date: Tue, 14 Dec 1999 10:40:15 +0100 (MET) [thread overview]
Message-ID: <199912140940.KAA29168@beta.informatik.hu-berlin.de> (raw)
In-Reply-To: Adam Spiers's message of Mon, 13 Dec 1999 19:24:57 +0000
Adam Spiers wrote:
> Bart Schaefer (schaefer@candle.brasslantern.com) wrote:
> > The last one is a bit unfortunate, but just "compinit" (without even
> > trying any completions yet) adds half a megabyte to the RSS of zsh on
> > my system, and it only goes up from there as functions autload and
> > start caching their results in shell variables.
>
> This reminds me. Not only does the completion system make the
> environment, and hence memory usage large, but it slows startup down.
> Are there any significant optimisations which can be done? Maybe
> caching some of the large associative arrays to disk in (say) DBM
> format so that several shells can share them? I know this is already
> done in .zcompdump ... any others? (I've been meaning to do this for
> _man, actually.)
Which would slow things down... but I haven't tried so I don't know
how much.
> I notice that $history gets set to the whole
> history; what uses that? I have HISTSIZE=5000 so this variable is
> fairly sizeable!
It doesn't really get set to it. $history (and $historywords) are
implement by function which make them look like arrays. Memory is only
allocated for them when they are really used -- and that is heap
memory which will be freed soon. But yes, heavy usage of it may be
slow and expensive... feel free to write a better interface (or
improve the current implementation).
Bye
Sven
--
Sven Wischnowsky wischnow@informatik.hu-berlin.de
next reply other threads:[~1999-12-14 9:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-12-14 9:40 Sven Wischnowsky [this message]
-- strict thread matches above, loose matches on Subject: below --
1999-12-16 10:07 optimisations Sven Wischnowsky
[not found] <Liam.945065738.543685.31995.772540271@fizz>
[not found] ` <991213182445.ZM11778@candle.brasslantern.com>
1999-12-13 19:24 ` optimisations Adam Spiers
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