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From: "Lucy" <no1lucy@gmail.com>
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Subject: Re: About Allocator algorithm of creating VM on Host
Date: Tue, 23 Oct 2012 10:29:10 +0800
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Hi Prachi & Tamas ,

Thanks for the reply.
=20
It's very helpful.


Thanks,
Lucy

-----Original Message-----

From: Prachi Damle [mailto:Prachi.Damle@citrix.com]=20
=B7=A2=CB=CD=CA=B1=BC=E4: 2012=C4=EA10=D4=C223=C8=D5 3:09
=CA=D5=BC=FE=C8=CB: cloudstack-users@incubator.apache.org
=D6=F7=CC=E2: RE: About Allocator algorithm of creating VM on Host

Allocator choices are as described below and the global confg param to =
use
is  'vm.allocation.algorithm' and is set to randon by default.

About detecting 80% CPU/RAM usage - there are various cluster level
thresholds one can set through global configurations to track the =
capacity
usage per cluster.
Upon crossing the thresholds, alerts are generated. Also new VM =
deployments
do not occur above the threshold limits.

Thanks,
Prachi

-----Original Message-----
From: Tamas Monos [mailto:tamasm@veber.co.uk]=20
Sent: Monday, October 22, 2012 3:29 AM
To: cloudstack-users@incubator.apache.org
Subject: RE: About Allocator algorithm of creating VM on Host

Hi,

The 3.0.2 support the following VM allocation algorithms:

'random', 'firstfit', 'userdispersing', 'userconcentratedpod_random',
'userconcentratedpod_firstfit'

You can configure this in the global configuration options. The default =
is
random I guess.
I don't think CloudStack will detect any of those you require however I
think hypervisors should.
Your hypervisor cluster (I use ESX) will detect issues and send alerts, =
I'm
sure there is something for xen/kvm as well.

Regards

Tamas Monos                                               DDI
+44(0)2034687012
Chief Technical                                             Office
+44(0)2034687000
Veber: The Hosting Specialists               Fax         +44(0)871 522 =
7057
http://www.veber.co.uk

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www.facebook.com/veberhost

-----Original Message-----
From: Lucy [mailto:no1lucy@gmail.com]
Sent: 22 October 2012 10:45
To: cloudstack-users@incubator.apache.org
Subject: About Allocatoralgorithm of creating VM on Host

Dear all,

=20

=20

I have a question about allocator algorithm of creating VMs on Host.

=20

What's the default allocator algorithm to allocate VM on Host in =
Cloudstack?

=20

And are there any other choice?

=20

Can Cloudstack detect heavy loadbalance ,for example one host's =
CPU/memory
is greater than 80%?

=20

Thanks,

Lucy

=20