On Tue, May 04, 2004 at 04:02:26PM +0200, Thomas Spatzier wrote: > > > I'm experiencing a major memory leak if I run a router with IP connection > > > tracking enabled and packets larger than MTU size. > > > > How do you observe such a memory leak? What exact values are you > > looking at? > > On the router I issue a 'watch -n 1 cat /proc/meminfo'. > Then I do a 'ping -f -s 64000' from one host to another host via the router. > On each update of my watch above there are about 10 MB of memory > (MemFree) missing. MemFree is not significant in this case. please refer to your favourite linux kernel FAQ. > I also watched /proc/slabinfo and noticed the increasing size of the > skbuff_head_cache slab. does it increase and stay at a certain value, or increase indefinitely? my guess is that you are observing quite normal behaviour, after getting used, the slab cache allocates some memory which is then re-used again and again. Interesting is also not the sizze of the SLAB, but the number of objects in use from a particular slab. > Regards, > Thomas. -- - Harald Welte <laforge@netfilter.org> http://www.netfilter.org/ ============================================================================ "Fragmentation is like classful addressing -- an interesting early architectural error that shows how much experimentation was going on while IP was being designed." -- Paul Vixie
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