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SubjectMemory management
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I'm currently running a memory-expensive Maple calctulation on my 2.0.25
box, which should, in principle, just fit into memory.

No other process is running at all (except for sshd and top). The 95%
idle time speaks for itself - the CPU fiddling thumbs while memory pages
are being copied in and out all the time.

I'm not sure what Maple's memory access patterns are (pretty chaotic,
probably), but Linux memory management sure isn't suited for them...

8:52pm up 7 days, 9:49, 1 user, load average: 1.05, 1.03, 0.70
30 processes: 27 sleeping, 3 running, 0 zombie, 0 stopped
CPU states: 12.4% user, 1.7% system, 0.0% nice, 95.0% idle
Mem: 63300K av, 62532K used, 768K free, 1528K shrd, 68K buff
Swap: 130624K av, 27376K used, 103248K free 1212K cached

PID USER PRI NI SIZE RSS SHARE STAT LIB %CPU %MEM TIME COMMAND
18038 ig25 10 0 64356 56756 228 R 48 4.1 89.6 44:59 mapleV
18037 ig25 0 0 15732 516 396 S 204 0.0 0.8 2:39 irisVxm
18377 ig25 0 0 568 368 344 S 0 0.0 0.5 0:00 bash
18483 ig25 1 0 392 340 232 R 0 1.1 0.5 0:02 top
128 root 0 0 240 148 112 S 0 0.0 0.2 0:14 amd
18375 root 0 0 412 144 84 R 0 0.1 0.2 0:03 sshd
96 root 0 0 144 68 36 S 0 0.0 0.1 0:00 syslogd
12 root 0 0 76 40 28 S 0 0.0 0.0 0:03 update
141 root 0 0 120 40 40 S 0 0.0 0.0 0:00 cron
134 root 0 0 168 24 24 S 0 0.0 0.0 0:00 sendmail
116 root 0 0 108 16 16 S 0 0.0 0.0 0:43 sshd
1 root 0 0 76 0 0 SW 0 0.0 0.0 0:25 init

--
Thomas Koenig, Thomas.Koenig@ciw.uni-karlsruhe.de, ig25@dkauni2.bitnet.
The joy of engineering is to find a straight line on a double
logarithmic diagram.

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