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Re: Severe memleak in sequence expressions?
From: |
Marc Schiffbauer |
Subject: |
Re: Severe memleak in sequence expressions? |
Date: |
Wed, 30 Nov 2011 23:30:35 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
* Chet Ramey schrieb am 30.11.11 um 14:23 Uhr:
> > Hi all,
> >
> > I think there is a severe memleak in bash.
>
> It's not a memory leak. It might reveal a sub-optimal memory allocation
> pattern -- asking for an array with that many strings is going to gobble
> a lot of memory -- but it's not a leak in the sense that bash loses
> track of an allocated chunk.
Well, but how do you explain that:
mschiff@moe:~$ bash
mschiff@moe:~$ ps u $$
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
mschiff 14156 5.2 0.1 8836 3692 pts/1 S 23:28 0:00 bash
mschiff@moe:~$ time echo {0..1000000}>/dev/null
real 0m2.307s
user 0m2.084s
sys 0m0.196s
mschiff@moe:~$ ps u $$
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
mschiff 14156 13.2 6.2 196272 191036 pts/1 S 23:28 0:02 bash
mschiff@moe:~$
-Marc
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