From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Lieven <pl@kamp.de>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
"qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] broken incoming migration
Date: Tue, 04 Jun 2013 17:17:01 +0200 [thread overview]
Message-ID: <51AE04ED.9030108@redhat.com> (raw)
In-Reply-To: <51ADFE4C.6050504@kamp.de>
Il 04/06/2013 16:48, Peter Lieven ha scritto:
> Still using 3.2, but strange enough the above example is also not
> increasing RSS size for me.
>
> Can you try the following:
> qemu git master with 1G of memory (hanging in bios with no boot device)
> and migrate it. Before migration RSS Size os somewhat
> around 16MB. After migration its RSS size is in the order of 1G.
That may be a kernel bug. The kernel did not do the copy-on-write trick
on huge zero pages. It was fixed last year, maybe 3.2 is not enough.
Try adding a MADV_HUGEPAGE madvise to the testcase and see if it reproduces.
Paolo
next prev parent reply other threads:[~2013-06-04 15:19 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-30 7:44 [Qemu-devel] broken incoming migration Alexey Kardashevskiy
2013-05-30 7:49 ` Alexey Kardashevskiy
2013-05-30 7:49 ` Paolo Bonzini
2013-05-30 8:18 ` Alexey Kardashevskiy
2013-05-30 9:08 ` Peter Lieven
2013-05-30 9:31 ` Alexey Kardashevskiy
2013-05-30 13:00 ` Paolo Bonzini
2013-05-30 13:38 ` Alexey Kardashevskiy
2013-05-30 14:08 ` Paolo Bonzini
2013-05-30 14:38 ` Peter Lieven
2013-05-30 14:41 ` Paolo Bonzini
2013-06-04 13:52 ` Peter Lieven
2013-06-04 14:14 ` Paolo Bonzini
2013-06-04 14:38 ` Peter Lieven
2013-06-04 14:40 ` Paolo Bonzini
2013-06-04 14:48 ` Peter Lieven
2013-06-04 15:17 ` Paolo Bonzini [this message]
2013-06-04 19:15 ` Peter Lieven
2013-06-05 3:37 ` Alexey Kardashevskiy
2013-06-05 6:09 ` Peter Lieven
2013-06-09 4:12 ` liu ping fan
2013-06-09 7:22 ` Peter Lieven
2013-06-04 15:10 ` Peter Lieven
2013-06-08 8:27 ` Wenchao Xia
2013-06-08 8:30 ` Alexey Kardashevskiy
2013-06-09 2:16 ` Wenchao Xia
2013-06-09 2:34 ` Alexey Kardashevskiy
2013-06-09 2:52 ` [Qemu-devel] [Qemu-ppc] " Benjamin Herrenschmidt
2013-06-09 3:01 ` Alexey Kardashevskiy
2013-06-09 3:01 ` [Qemu-devel] " Wenchao Xia
2013-06-09 3:09 ` Alexey Kardashevskiy
2013-06-09 3:31 ` Wenchao Xia
2013-06-09 7:27 ` Peter Lieven
2013-06-10 6:39 ` Alexey Kardashevskiy
2013-06-10 6:50 ` Peter Lieven
2013-06-10 6:55 ` Alexey Kardashevskiy
2013-06-10 8:44 ` Peter Lieven
2013-06-10 9:10 ` Alexey Kardashevskiy
2013-06-10 9:33 ` [Qemu-devel] [Qemu-ppc] " Benjamin Herrenschmidt
2013-06-10 9:42 ` Peter Lieven
2013-06-09 2:53 ` Benjamin Herrenschmidt
2013-06-12 14:00 ` Paolo Bonzini
2013-06-12 14:11 ` Benjamin Herrenschmidt
2013-06-12 20:10 ` Paolo Bonzini
2013-06-13 2:41 ` Wenchao Xia
2013-06-03 10:04 ` [Qemu-devel] " Alexey Kardashevskiy
2013-06-04 10:56 ` Peter Lieven
2013-06-08 8:24 ` Wenchao Xia
2013-05-30 10:18 ` Peter Maydell
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