Messages in this thread | | | Date | Thu, 31 Jan 2002 14:35:02 -0500 | From | David Ford <> | Subject | Re: Memory leaks with GRE Tunnels |
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I use GRE tunnels a lot. I have run my rc.networking script several dozen times with no problems and everything is cranking along nicely. You can view my scripts at http://blue-labs.org/. I always use a single numbered interface, "gre1".
However the below really is a bug that should be fixed I would imagine.
David
Deepinder Singh wrote:
> 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 > > - > To unsubscribe from this list: send the line "unsubscribe > linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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