where should I start looking to find out why things are so slow?
Check the glance node. The first prototype I set up had an incredibly
slow glance node, which led to this kind of behavior.
Are the compute nodes downloading at the same time, or sequentially?
Mark
___
so I dont think there is a network or disk bottle neck now.
in watching instances launch I see that the disk image itself gets copied out
to the compute
node in < 1 minute, the xml file for libvirt gets created. then a pause of ~ 20
minutes
then the kvm process starts up and off the VM goes just
On 05/01/2013 10:43 AM, Steve Heistand wrote:
there may be some network issues going on here, trying to shove some amount of
data
bigger then a few Gig seems to start slowing things down.
If you think there is an actual network problem, you could I suppose try
exploring that with netperf or i
12:43 PM
To: openstack@lists.launchpad.net
Subject: Re: [Openstack] launching multiple VMs takes very long time
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ok a followup to this.
its not any sort of disk access issue. I created a new disk to hold the glance
directory and running atop while
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ok a followup to this.
its not any sort of disk access issue. I created a new disk to hold the glance
directory and running atop while launching shows all the activity on the
original
root drive nothing using glance.
Normally at idle the root drive d
On 04/30/2013 01:36 PM, Melanie Witt wrote:
This presentation from the summit might be of interest to you:
http://www.openstack.org/summit/portland-2013/session-videos/presentation/scaling-the-boot-barrier-identifying-and-eliminating-contention-in-openstack
A nice presentation. Based on his c
this certainly looks promising..
thanks
s
On 04/30/2013 01:36 PM, Melanie Witt wrote:
> This presentation from the summit might be of interest to you:
>
> http://www.openstack.org/summit/portland-2013/session-videos/presentation/scaling-the-boot-barrier-identifying-and-eliminating-contention-i
This presentation from the summit might be of interest to you:
http://www.openstack.org/summit/portland-2013/session-videos/presentation/scaling-the-boot-barrier-identifying-and-eliminating-contention-in-openstack
I couldn't find just the slide deck anywhere so far.
Your issue is different bein
They are all booting the same image. there still may be a random read issues
if they arent mostly synced in copying the file to the compute node.
But there isnt much of a load on the disk while the instances are being
launched.
Its just a sata drive at this point so the performance isnt great but
Subject: [Openstack] launching multiple VMs takes very long time
if I launch one vm at a time its doesnt very long to start up the instance.
maybe a minute.
if I launch 4 instances (of the same snapshot as before) it takes 30 minutes.
they are all launching to different compute nodes, the controllers
On 04/30/2013 11:42 AM, Steve Heistand wrote:
if I launch one vm at a time its doesnt very long to start up the instance.
maybe a minute.
if I launch 4 instances (of the same snapshot as before) it takes 30 minutes.
they are all launching to different compute nodes, the controllers are all
mul
if I launch one vm at a time its doesnt very long to start up the instance.
maybe a minute.
if I launch 4 instances (of the same snapshot as before) it takes 30 minutes.
they are all launching to different compute nodes, the controllers are all
multicore,
I dont see any processes on the compute
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