On Fri, Feb 03, 2006 at 11:14:14AM -0800, Andrew Morton wrote:
> http://www.mail-archive.com/[email protected]/msg06355.html
> > A look into /proc/sys/net/ipv4/tcp_mem showed that that the values in
> > there were way to high. I hope that a reduction of these values will
> > help (not done yet).
> Sounds different. Please test a more recent kernel and if the problem is
> still there, send a report to linux-kernel and cc [email protected].
> Include the contents of /proc/meminfo and /proc/slabinfo. Thanks.
I solved the issue.
Recent kernels have alloc_large_system_hash() exactly for that, and
tcp_init() uses it. It has nr_all_pages and nr_kernel_pages to
determine the actual size of usable RAM, whereas 2.6.10 just uses
num_physpages. That's the reason why the values in tcp_mem are way
too high on machines with 3-4 Gig RAM.
Thanks. /holger
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