From: Avi Kivity <avi@redhat.com>
To: Martin Wawro <wawro@digitalmedics.de>
Cc: kvm@vger.kernel.org
Subject: Re: [User question] Huge buffer size on KVM host
Date: Wed, 15 Aug 2012 15:57:16 +0300 [thread overview]
Message-ID: <502B9CAC.3020705@redhat.com> (raw)
In-Reply-To: <4061CC51-5F7E-4C94-AC5E-EE857BCA412C@digitalmedics.de>
On 08/15/2012 03:05 PM, Martin Wawro wrote:
>
> On Aug 15, 2012, at 1:30 PM, Avi Kivity wrote:
>
>>> We have noticed a strange thing in one of our setups which uses KVM for
>>> virtualization.
>>> The size of the buffer cache turns out to be rather large
>>> [,,,]
>>>
>>
>> How is you storage set up? Files (which format?) or logical volumes?
>> what's the cache= setting?
>
> We are using logical volumes and the cache is set to 'none'.
Strange, that should work without any buffering.
What the contents of
/sys/block/sda/queue/hw_sector_size
and
/sys/block/sda/queue/logical_block_size
?
Replace sda by the disk underlying your physical volume.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-08-15 12:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-15 8:06 [User question] Huge buffer size on KVM host Martin Wawro
2012-08-15 11:30 ` Avi Kivity
2012-08-15 12:05 ` Martin Wawro
2012-08-15 12:57 ` Avi Kivity [this message]
2012-08-16 14:54 ` Martin Wawro
2012-08-16 14:57 ` Avi Kivity
2012-09-10 9:22 ` Martin Wawro
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