[Bug 159356] Re: System freeze on high memory usage

[pureblood]

I have had this problem for many years now. I am glad to see that other
people are complaining about it. Let me add that at first I have tried
to buy more RAM and disable swap, as it seemed that hard drive usage was
what killed the machine. Nevertheless, as soon as I do something wrong
in matlab, the system freezed really bad. Given a few
seconds/minutes/hours, matlab eventually get killed automatically but
the loss in productivity is tremendous. I have never understood what is
going on, as I have no swap. Also, if large chunks of memory get
requested, matlab issues an out of memory statement, but what seems to
freeze the machine are little subsequent request of small amounts of
memory. Something in the kernel is plain wrong to allow a process to eat
up all of the resources. In my personal opinion, you will always regret
eventually to have chosen to save money on RAM relying on swap, because
of misuses like this. But I hate that something is still crossing my
choice of not having swap somehow. I would pay to know exactly what is
going on. I use ubuntu lucid with the 2.6.32 kernel.

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System freeze on high memory usage
https://bugs.launchpad.net/bugs/159356
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