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[Bug libc/1128] Malloc not trimming filled-up sbrk space causes unnecessary system call overhead
- From: "jp-www at dcs dot gla dot ac dot uk" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 20 Jul 2008 19:41:37 -0000
- Subject: [Bug libc/1128] Malloc not trimming filled-up sbrk space causes unnecessary system call overhead
- References: <20050727134634.1128.jp-www@dcs.gla.ac.uk>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From jp-www at dcs dot gla dot ac dot uk 2008-07-20 19:41 -------
I reported this bug about three years ago now, so my memory is a little bit hazy. However, I do remember
that calls to free() were definitely causing expensive syscalls. I note the recent comments about sbrk(0)
not being expensive due to caching and, reviewing the glibc sources, I have to agree with this. So I suspect
there may be some detail missing from my original report that explains more what was going on.
Sorry!
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http://sourceware.org/bugzilla/show_bug.cgi?id=1128
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