Messages in this thread | | | Date | Thu, 31 Jan 2002 13:33:07 -0500 | From | "Deepinder Singh" <> | Subject | Memory leaks with GRE Tunnels |
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Hi ,
I have been doing some testing using GRE tunnels in Linux ( which btw work great ). I found that creating and deleting a tunnel results in a memory leak.
To test it out I wrote a small script that basically loops around creating and then deleting 8000 tunnel interfaces at a time. On the eighth iteration the system hangs a whole with no error messages. There was still enoungh virtual memory around even with the leaks so I figured something else is wrong. It turns out that the interface numbers ( as seen in ' ip link ls' ) do not seem to be reused when an interface is deleted and as such the system hangs when the number reaches 64K.
I suspect the two issues are realted but am more of a cisco guy and know kernel internals. The total mem leak for the 64 K tunnels is about 200 megs.
Please cc me if you reply to this post as I am not on the list.
thanks, Deepinder Singh Sr. Network Eng. Soma Networks
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