Re: Bug#245678: zsh: built-in rm -rf fills up the memory

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From: Clint Adams <clint@zsh.org>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: 245678-submitter@bugs.debian.org, zsh-workers@sunsite.dk
Subject: Re: Bug#245678: zsh: built-in rm -rf fills up the memory
Date: Sat, 8 May 2004 00:35:30 -0400	[thread overview]
Message-ID: <20040508043530.GA21396@scowler.net> (raw)
In-Reply-To: <1040426171013.ZM26825@candle.brasslantern.com>

> I'm not all that familiar with mallopt() but a look at the documentation
> doesn't suggest anything.

I think I've found the problem.  Here's an excerpt from an strace of
the zsh/files rm -rf going wild.  There are 55 or 56 such calls to mmap
for every length value.  Thus it appears that zsh is allocating
considerably more memory than it needs.

mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x583d9000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58415000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58451000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x5848d000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x584c9000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58505000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58541000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x5857d000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x585b9000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x585f5000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58631000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x5866d000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x586a9000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x586e5000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58721000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x5875d000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58799000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x587d5000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58811000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x5884d000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58889000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x588c5000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58901000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x5893d000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58979000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x589b5000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x589f1000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58a2d000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58a69000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58aa5000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58ae1000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58b1d000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58b59000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58b95000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58bd1000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58c0d000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58c49000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58c85000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58cc1000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58cfd000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58d39000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58d75000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58db1000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58ded000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58e29000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58e65000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58ea1000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58edd000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58f19000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58f55000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58f91000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x58fcd000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x59009000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x59045000
mmap2(NULL, 245760, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x59081000

next prev parent reply	other threads:[~2004-05-08  4:36 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20040424162150.GA4210@ay.vinc17.org>
2004-04-25  1:36 ` Clint Adams
2004-04-25 20:45   ` Bart Schaefer
2004-04-25 21:12     ` Clint Adams
2004-04-25 21:38       ` Clint Adams
2004-04-26 17:10       ` Bart Schaefer
2004-05-08  4:35         ` Clint Adams [this message]
2004-05-08 14:02           ` Clint Adams
2004-05-08 14:13             ` Clint Adams
2004-05-09 22:54               ` Bart Schaefer
2004-05-09 22:48             ` Bart Schaefer
2004-05-09 23:30               ` Clint Adams
2004-05-09 23:36                 ` Clint Adams
2004-05-09 23:51                   ` Bart Schaefer
2004-05-10 10:16                     ` Peter Stephenson
2004-05-10 14:09                       ` Clint Adams
2004-05-10 15:54                       ` Bart Schaefer
2004-05-10 16:19                     ` Peter Stephenson
2004-05-10 16:51                       ` Bart Schaefer
2004-05-10 17:23                         ` Peter Stephenson

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