From: "Alberto Treviño" <alberto@byu.edu>
To: "kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: Live memory allocation?
Date: Sat, 28 Mar 2009 07:38:33 -0600 [thread overview]
Message-ID: <200903280738.34169.alberto@byu.edu> (raw)
In-Reply-To: <49CB8CF6.70403@wpkg.org>
On Thursday 26 March 2009 08:11:02 am Tomasz Chmielewski wrote:
> Like, two guests, each with 2 GB memory allocated only use 1 GB of
> host's memory (as long as they don't have many programs/buffers/cache)?
>
> So yes, it's also supported by KVM.
The problem I've seen with this feature is that Windows guests end up taking
all of their available memory once they are up and running. For example,
booting Windows XP in KVM 82 show a steady increase in memory. Then about
the time the login box is about to appear, memory usage jumps to the maximum
allowed to the VM (512 MB in this case). I remember reading somewhere
Windows would try to initialize all memory during boot, causing KVM to
allocate all memory. VMware, however (and I don't know about VirtualBox)
knows about this and works around it, making sure memory isn't all allocated
during the Windows boot process.
Would there a way to work around the Windows memory allocation issue in KVM
as well?
next prev parent reply other threads:[~2009-03-28 13:38 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-26 13:44 Live memory allocation? Evert
2009-03-26 14:01 ` Tomasz Chmielewski
2009-03-26 14:04 ` Izik Eidus
2009-03-26 14:11 ` Tomasz Chmielewski
2009-03-26 17:47 ` Evert
2009-03-28 13:38 ` Alberto Treviño [this message]
2009-03-28 17:17 ` Brian Jackson
2009-03-30 13:23 ` Alberto Treviño
2009-03-30 15:48 ` Brian Jackson
2009-03-28 18:25 ` Nolan
2009-03-29 12:33 ` Avi Kivity
2009-03-30 13:40 ` Tomasz Chmielewski
2009-03-30 13:48 ` Avi Kivity
2009-03-30 13:55 ` Tomasz Chmielewski
2009-03-30 14:58 ` Avi Kivity
2009-03-30 15:15 ` Tomasz Chmielewski
2009-03-30 15:18 ` Javier Guerra
2009-03-31 9:30 ` Tomasz Chmielewski
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