[cl-debian] Bug#282716: marked as done (cmucl: Excessive memory usage)
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From: Roger Leigh <rleigh at debian.org>
To: Debian Bug Tracking System <submit at bugs.debian.org>
Subject: cmucl: Excessive memory usage
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Package: cmucl
Version: 19a-release-20040728-9
Severity: normal
cmucl uses a lot of virtual memory. For example, running /usr/bin/cmucl
on my system with no arguments gives this line with top:
PID USER PR NI VIRT RES SHR S #C %CPU %MEM TIME COMMAND
10620 roger 15 -1 1284m 5044 24m S 0 0.8 1.0 0:00 cmucl
It's using over 1 gigabyte of virtual memory! The system has 512 MiB of
core memory and an extra 8 GiB swap space, giving 8.5 GiB total virtual
memory. By default, the system has some resource limits specified in
/etc/security/limits.conf
* soft nproc 150
* hard nproc 200
* soft core 0
* hard core 20480
* hard maxlogins 15
* hard rss 100000
* soft priority 5
* soft stack 8192
* hard stack 8192
* soft as 524288
With the last "as" limit in place, cmucl won't run at all:
$ cmucl
mmap: Cannot allocate memory
ensure_space: Failed to validate 268431360 bytes at 0x28000000
If the "as" limit is removed, cmucl will run just fine.
So it seems the default value for allocation is way too large. If this
is calculated at runtime, perhaps the calculation is broken?
[I tried removing 6 GiB of swap and reinstalling to regenerate the
core/memory dumps; this had no effect.]
I'm afraid I'm not too familiar with Lisp: I installed cmucl to learn
the language. I'll be more than happy to do any further testing,
though.
Regards,
Roger
# cat /proc/meminfo
MemTotal: 515652 kB
MemFree: 14332 kB
Buffers: 32224 kB
Cached: 210888 kB
SwapCached: 28 kB
Active: 368644 kB
Inactive: 87892 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 515652 kB
LowFree: 14332 kB
SwapTotal: 8388544 kB
SwapFree: 8388516 kB
Dirty: 644 kB
Writeback: 0 kB
Mapped: 265688 kB
Slab: 20260 kB
Committed_AS: 836280 kB
PageTables: 2544 kB
VmallocTotal: 516040 kB
VmallocUsed: 48388 kB
VmallocChunk: 466884 kB
-- System Information:
Debian Release: 3.1
APT prefers unstable
APT policy: (990, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.9
Locale: LANG=en_GB, LC_CTYPE=en_GB (charmap=UTF-8) (ignored: LC_ALL set to en_GB)
Versions of packages cmucl depends on:
ii common-lisp-controller 4.12 This is a Common Lisp source and c
ii debconf 1.4.40 Debian configuration management sy
-- debconf information:
cmucl/upgradeproblems:
---------------------------------------
Received: (at 282716-done) by bugs.debian.org; 14 Aug 2005 20:14:49 +0000
>From pvaneynd at debian.org Sun Aug 14 13:14:49 2005
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Message-ID: <42FFA636.8050802 at debian.org>
Date: Sun, 14 Aug 2005 22:14:46 +0200
From: Peter Van Eynde <pvaneynd at debian.org>
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To: 220797-done at bugs.debian.org, 212018-done at bugs.debian.org,
278137-done at bugs.debian.org, 282716-done at bugs.debian.org,
319427-done at bugs.debian.org
Subject: closing old non-relevant bugs
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Hello,
I'm closing older bugs that litter the bts at the moment.
220797 is non-relevant because we don't do lispworks anymore ;-)
212018 is fixed in sarge
278137 I don't want to fix because the generation is brittle and depends
on latex2html (a non-free package)
282716 because the memory system is unlikely to change any time soon
319427 because it is a ubuntu bug and should be fixed if you use the
people.debian.org/~pvaneynd repository
If you think this is unfair, please reopen and yell at me :-)
Groetjes, Peter
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