From: "Bart Schaefer" <schaefer@candle.brasslantern.com>
To: zsh-workers@sunsite.auc.dk
Subject: Re: zsh and memory
Date: Fri, 17 Dec 1999 07:16:10 +0000 [thread overview]
Message-ID: <991217071610.ZM17352@candle.brasslantern.com> (raw)
In-Reply-To: <199912160956.KAA13359@beta.informatik.hu-berlin.de>
On Dec 16, 10:56am, Sven Wischnowsky wrote:
} Subject: Re: zsh and memory
}
} [...] I looked who was using lots of heap memory and found the
} tokstr handling in lex.c. There we always allocate at least 256 bytes
} and if the buffer needs expanding (in add()) in gets resized to
} inbufct (or larger). Some more investigation showed that we almost
} never need a tokstr with more than 32 bytes, so I changed that. I also
} changed add() to be more careful when expanding the buffer -- I left
} the old code conditioned out because I don't kno if there was a reason
} to resize it to inbufct bytes; I at least don't see a reason for that.
Probably the idea was to eliminate lots of small allocations in the
event that the "token" is a long quoted string or the like, for speed.
We should watch out for performance problems if those changes are kept.
--
Bart Schaefer Brass Lantern Enterprises
http://www.well.com/user/barts http://www.brasslantern.com
next prev parent reply other threads:[~1999-12-17 7:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-12-16 9:56 Sven Wischnowsky
1999-12-17 7:16 ` Bart Schaefer [this message]
1999-12-16 10:39 Sven Wischnowsky
1999-12-16 11:16 ` Mike Fletcher
1999-12-16 18:01 ` Timothy Writer
1999-12-17 10:40 Sven Wischnowsky
1999-12-17 11:49 Sven Wischnowsky
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