--On Tuesday, October 23, 2001 18:52:35 -0200 Rik van Riel
<riel@conectiva.com.br> wrote:
> I submitted a patch a while ago to set the number way lower,
> which was accepted by Alan and in the -ac kernels. A few months
> later Linus followed and changed the limit in his kernels, too.
Ok, that's what I get for reading the comment and not deciphering the
code... The actual calculation is mempages / (THREAD_SIZE/PAGE_SIZE) / 8
where THREAD_SIZE is 2 pages on i386. If I read it right this means it's
limiting it to 1/8 physical memory instead of half.
But there's still a problem. The value for mempages is all of physical
memory including highmem, so a machine with a sufficient amount of high
memory can set max_threads to a value way too high, given that most if not
all of the resources it's trying to limit have to come from normal memory
and not high memory.
Dave McCracken
======================================================================
Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059
dmccr@us.ibm.com T/L 678-3059
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