Yes, there are multiple threads that address this issue. Look for these
subjects:
Some questions about linux kernel
Overcommitable memory
Overcomittable memory
Avoiding OOM on overcommit
On the issue of low memory situations
Let's not start yet another thread. Read up on the above mentioned ones and
chime in an existing thread if you want...
Fred Reimer
On Wed, 22 Mar 2000, Michael Lampe wrote:
> I found the following by accident playing with PVM. If you start the
> 'gexample' from the examples directory with dimension=10000 and no of
> tasks=32 on one machine, it becomes almost immediately completely un-
> usable and begins with heavy swapping. Considering how much memory
> would be necessary for this computation before starting it would have
> avoided the trouble.
>
> So the processes go on allocating memory until physical memory and swap
> is exhausted. At this point processes are killed and now things are
> really
> becoming interesting: One would expect that the misbehaving gexample
> processes are killed or maybe other processes started by the same user.
>
> Actually random processes are killed: I've seen klogd, syslogd, cron,
> gpm
> and inetd disappear. In some cases the machine was unaccessible locally
> as
> well as remotely, but the kernel seemed to be still running -- ping
> showed
> the machine still up.
>
> Apart from the specific system processes that are killed, the problem
> can be
> reproduced under many different configurations. I have tried SuSE 6.0
> with
> kernel 2.2.12, SuSE 6.2 with kernel 2.2.14, LinuxPPC R4/R5 (Red Hat 5.x
> based)
> with some recent 2.2.x kernels and finally the SuSE pre-release for PPC.
> PVM
> was 3.4.x.
>
> Any comments ????
>
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This archive was generated by hypermail 2b29 : Thu Mar 23 2000 - 21:00:36 EST