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RE: [Xen-devel] xen 3 dom0 eats memory - ME TOO

To: "Patrick Scharrenberg" <pittipatti@xxxxxx>, <Xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] xen 3 dom0 eats memory - ME TOO
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Thu, 5 Jan 2006 10:15:46 +1100
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Thread-topic: [Xen-devel] xen 3 dom0 eats memory - ME TOO
I have a similar situation on two machines running xen3 (xen-3.0-testing
20051228). After a short time (days) dom0 fills up with memory and
eventually kills the watchdog process (which in turn reboots the machine
as I use softdog with the nowayout module option, for exactly this

I am using bridging, not nat, if that makes any difference.

I'll add free memory to mrtg and see what that uncovers...


> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Patrick Scharrenberg
> Sent: Thursday, 5 January 2006 00:43
> To: Xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] xen 3 dom0 eats memory
> Hi!
> Since my upgrade from xen 2-testing  to xen 3-testing I have the
> that domain0 consumes more and more memory on domU networktraffic.
> It is about 50 bytes per packet that gets lost.
> I reproduced the bug on another machine.
> In normal bridged setup all works fine.
> I changed the setup in the following way:
> - added an ip address to the bridge (in another subnet (B))
> - changed domU ip address to a net B address
> - added masquerading for eth0 in the postrouting-chain in dom0
> After that I pinged a host outside this machine.
> Sending and receiving 100.000 pakets results to a
> dom0-memory-consumption increasement of about 5 MB!
> I have to restart this machine once a day for not running out of
> What can I do?
> Patrick
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