From: Nikola Ciprich <extmaillist@linuxbox.cz>
To: Anthony Liguori <anthony@codemonkey.ws>, kvm-devel@lists.sourceforge.net
Subject: Re: performance tuning, problem with paravirtualized clock
Date: Mon, 07 Apr 2008 00:24:16 +0200 [thread overview]
Message-ID: <47F94D90.2040701@linuxbox.cz> (raw)
In-Reply-To: <47F949DD.2010802@codemonkey.ws>
Anthony Liguori wrote:
> You won't see a gain with tmpfs. Make sure you reserve huge pages
> first. For a 1GB guest, you'll need something like:
>
> echo 540 > /proc/sys/vm/nr_hugepages
>
> When you create a VM, you need a bit more memory than 1GB for
> per-guest overhead. That's why I reserve 540 instead of 512. You can
> probably get away with 530 really.
>
> Check that it succeeded by cat'ing /proc/meminfo.
>
Well, I tried various values now, and booting fails immediately:
Decompressing Linux...
invalid compressed format (err=1)
-- System halted
weird...
anyways I'll also give fresh kvm-65 a try now :)
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next prev parent reply other threads:[~2008-04-06 22:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-06 19:56 performance tuning, problem with paravirtualized clock Nikola Ciprich
2008-04-06 20:38 ` Anthony Liguori
2008-04-06 21:57 ` Nikola Ciprich
2008-04-06 22:08 ` Anthony Liguori
2008-04-06 22:24 ` Nikola Ciprich [this message]
2008-04-06 22:33 ` Anthony Liguori
2008-04-06 20:49 ` Dor Laor
2008-04-06 22:25 ` Nikola Ciprich
2008-04-07 4:14 ` Avi Kivity
2008-04-07 15:41 ` Marcelo Tosatti
2008-04-07 20:47 ` Nikola Ciprich
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