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Re: [Qemu-discuss] questions about cgroup

From: Jakob Bohm
Subject: Re: [Qemu-discuss] questions about cgroup
Date: Wed, 03 Apr 2013 11:03:13 +0200
User-agent: Mozilla/5.0 (Windows NT 5.2; WOW64; rv:17.0) Gecko/20130307 Thunderbird/17.0.4

Please clarify

On 4/3/2013 10:20 AM, yue-kvm wrote:
i have 2 questions,
1.if cgroup can be disabled?
What aspect of the cgroup subsystem? Do you mean cgroup-controlled quotas?
2.let suppose cgroup is disabled now , because we need to assign memory to guestVM(1024M),if this 1024M can be break throught by guestVM?
cgroup does not imply some specific limit (such as 512M or whatever
you were thinking about), cgroup can control quota settings which the
administrator can set to many different values, certainly allocating
1024M would not be a problem if the quota is more than 1024M + all the
other memory used by that cgroup.
if so, cgroup is useless in this case?
Depends what you (or your administrator) was trying to use cgroup for

You may want to Read The Fine Manual at



Jakob Bohm, CIO, Partner, WiseMo A/S.  http://www.wisemo.com
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