From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Vasiliy G Tolstov <v.tolstov@selfip.ru>
Cc: Don Brearley <donbrearley@hibbing.edu>, xen-devel@lists.xensource.com
Subject: Re: linux kernel 2.6.37
Date: Tue, 25 Jan 2011 09:45:23 -0500 [thread overview]
Message-ID: <20110125144523.GB7238@dumpdata.com> (raw)
In-Reply-To: <1295900343.2349.6.camel@mobile>
On Mon, Jan 24, 2011 at 11:19:02PM +0300, Vasiliy G Tolstov wrote:
> On Fri, 2011-01-21 at 19:16 +0300, Vasiliy G Tolstov wrote:
> > On Fri, 2011-01-21 at 10:30 -0500, Konrad Rzeszutek Wilk wrote:
> >
> > > Do you see any messages during bootup about memory being returned? Look for
> > > xen_release_chunk .. and pages freed ?
> [snip]
>
> Hello. Konrad, do You have any progress about this issue?
Try booting your kernel with 'debug loglevel=10 memblock=debug'. I know that at least
64MB is used for SWIOTLB (which you don't need - you can disable that since you are
not doing any PCI passthrough), 6MB for kernel + kernel data. The "memblock=debug" will
give you the details to figure out who else is eating the big swaths of memory.
Is this also a problem if you boot the guest as HVM? What happens if you boot your
PV guest without 'maxmem=4096' and .. oh, I think I know why this is happening = the
kernel allocates pagetables as if you have 4GB of memory and that eats much of low memory.
If you decrease the 'maxmem' you should see a smaller amount being used.
next prev parent reply other threads:[~2011-01-25 14:45 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-20 20:09 linux kernel 2.6.37 Don Brearley
2011-01-20 20:11 ` Vasiliy G Tolstov
2011-01-20 20:19 ` Pasi Kärkkäinen
2011-01-20 20:28 ` Vasiliy G Tolstov
2011-01-20 22:42 ` Vasiliy G Tolstov
2011-01-21 15:30 ` Konrad Rzeszutek Wilk
2011-01-21 16:16 ` Vasiliy G Tolstov
2011-01-24 20:19 ` Vasiliy G Tolstov
2011-01-25 14:45 ` Konrad Rzeszutek Wilk [this message]
2011-01-25 16:33 ` Vasiliy G Tolstov
2011-01-25 18:43 ` Konrad Rzeszutek Wilk
2011-01-26 17:58 ` Konrad Rzeszutek Wilk
2011-01-25 17:35 ` Vasiliy G Tolstov
2011-01-25 21:03 ` Dan Magenheimer
2011-01-26 6:40 ` Vasiliy G Tolstov
-- strict thread matches above, loose matches on Subject: below --
2011-01-20 20:01 Vasiliy G Tolstov
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