From: Avi Kivity <avi@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: Sasha Levin <levinsasha928@gmail.com>,
Dan Magenheimer <dan.magenheimer@oracle.com>,
mtosatti@redhat.com, gregkh@linuxfoundation.org,
sjenning@linux.vnet.ibm.com, Konrad Wilk <konrad.wilk@oracle.com>,
kvm@vger.kernel.org
Subject: Re: [RFC 00/10] KVM: Add TMEM host/guest support
Date: Tue, 12 Jun 2012 15:01:36 +0300 [thread overview]
Message-ID: <4FD72FA0.1060104@redhat.com> (raw)
In-Reply-To: <20120612115857.GT580@redhat.com>
On 06/12/2012 02:58 PM, Gleb Natapov wrote:
> On Tue, Jun 12, 2012 at 02:46:38PM +0300, Avi Kivity wrote:
>> On 06/11/2012 10:56 PM, Sasha Levin wrote:
>> >
>> > btw, so far we've been poking on half of the code here.
>> >
>> > What about frontswap over kvm-tmem? are there any specific tests you'd
>> > like to see there?
>>
>> hmm. On one hand, no one swaps these days so there aren't any good
>> benchmarks for it. On the other hand, with swapping, at least we're
>> guaranteed the page will be read in the future (unlike cache, where it's
>> quite possible it won't be). I don't know.
>>
>>
> Swapped page can be discarded without reading too.
Right.
The effects of frontswap can be achieved by swapping to a block device
that sets cache=writeback, more or less (esp. with trim support, you can
discard pages that you won't be needing again before they hit disk).
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-06-12 12:01 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-06 13:07 [RFC 00/10] KVM: Add TMEM host/guest support Sasha Levin
2012-06-06 13:24 ` Avi Kivity
2012-06-08 13:20 ` Sasha Levin
2012-06-08 16:06 ` Dan Magenheimer
2012-06-11 11:17 ` Avi Kivity
2012-06-11 8:09 ` Avi Kivity
2012-06-11 10:26 ` Sasha Levin
2012-06-11 11:45 ` Avi Kivity
2012-06-11 15:44 ` Dan Magenheimer
2012-06-11 17:06 ` Avi Kivity
2012-06-11 19:25 ` Sasha Levin
2012-06-11 19:56 ` Sasha Levin
2012-06-12 11:46 ` Avi Kivity
2012-06-12 11:58 ` Gleb Natapov
2012-06-12 12:01 ` Avi Kivity [this message]
2012-06-12 10:12 ` Avi Kivity
2012-06-12 1:18 ` Dan Magenheimer
2012-06-12 10:09 ` Avi Kivity
2012-06-12 16:40 ` Dan Magenheimer
2012-06-12 17:54 ` Avi Kivity
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