On Mon, May 31, 2004 at 02:21:02PM +0200, Robert Olsson wrote:
> Daniel Stone writes:
> > Hi guys,
> > Attached is a patch to net/ipv4/route.c (against 2.4.23, sorry) to
> > combat the 'dst cache full' issue. Essentially, there's a machine that I
> > have access to (a router) that will report 'dst cache full', and
> > immediately cease dealing with any IPv4 traffic. I found the attached
> > patch against 2.0, and forward-ported it to 2.4. As this issue only
> > crops up randomly every couple of weeks, I can't tell you whether it's
> > worked or not. All I know is that it hasn't eaten my firstborn so far:
> > given a quick spin, it seemed to work OK, but whether or not it solves
> > the problem is a different matter.
> If your traffic is sane and you got dst cache overflow you should
> probably try to reduce gc_min_interval so your GC can release a
> higher numbers of dst entries per second. Flushing active entries
> means that they are created again. This decreases your throughput
> maybe just enough not to reach the limit where you reach overflow.
gc_min_interval was zero - should this increase, or what?.
> > + atomic_set(&ipv4_dst_ops.entries, 0);
> These counters should only be handled by the freeing process rt_free etc.
Thanks for the pointers!
Daniel Stone <daniel@xxxxxxxxxxxxx>
"The programs are documented fully by _The Rise and Fall of a Fooish Bar_,
available by the Info system." -- debian/manpage.sgml.ex, dh_make template
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