From: Avi Kivity <avi@redhat.com>
To: Michael Tokarev <mjt@tls.msk.ru>
Cc: Andrea Arcangeli <aarcange@redhat.com>,
qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] qemu and transparent huge pages
Date: Wed, 15 Aug 2012 15:51:12 +0300 [thread overview]
Message-ID: <502B9B40.6090307@redhat.com> (raw)
In-Reply-To: <502B99D0.8010808@msgid.tls.msk.ru>
On 08/15/2012 03:45 PM, Michael Tokarev wrote:
>
> But apparently, THP does not work still, even with 2Mb
> alignment: when running a guest, AnonHugePages in
> /proc/meminfo stays at 0 - either in kvm mode or in tcg
> mode. Any idea why? What else is needed for THP to work?
It does for me:
AnonHugePages: 368640 kB
Note the patch you reference doesn't impact thp, just kvm's ability to
propagate them to the shadow page table.
>
> This is quite a frequent question in #kvm IRC channel,
> and I always suggested using -mem-path for this, but
> I'm curios why it doesn't work automatically when it
> probably should?
>
Please provide extra info, like the setting of
/sys/kernel/mm/transparent_hugepage/enabled.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-08-15 12:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-15 12:45 [Qemu-devel] qemu and transparent huge pages Michael Tokarev
2012-08-15 12:51 ` Avi Kivity [this message]
2012-08-15 14:22 ` Michael Tokarev
2012-08-15 14:26 ` Avi Kivity
2012-08-15 15:03 ` Michael Tokarev
2012-08-15 15:06 ` Michael Tokarev
2012-09-16 11:19 ` Michael Tokarev
2012-11-12 15:18 ` Michael Tokarev
2012-11-13 14:30 ` Aurelien Jarno
2012-11-13 16:38 ` Michael Tokarev
-- strict thread matches above, loose matches on Subject: below --
2012-08-15 12:40 Michael Tokarev
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