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- Subject: Re: luac and loadstring hang
- From: Luiz Henrique de Figueiredo <lhf@...>
- Date: Mon, 16 Nov 2009 13:47:32 -0200
> > In my old Pentium II with 256Mb of memory running Linux the process is
> > killed by the OS after a while. Roberto has suggested that it's probably
> > a paging problem.
> Actually "optimistic memory allocation".
"We learned that malloc should return NULL in case of out-of-memory.
However, it is not the case in Linux. By default, Linux uses
optimistic memory allocation strategy. Under this strategy,
Linux assumes there always exists free memory. The memory region
returns by malloc is not actually allocated until the process
touches the memory region. This means the memory region returns
by malloc may not be available. In case of out-of-memory, the
OOM Killer in Linux will pick up one or more process to kill."