On Wed, Oct 30, 2013 at 9:26 AM, Gustavo Niemeyer gust...@niemeyer.netwrote:
On Wed, Oct 30, 2013 at 7:57 AM, John Arbash Meinel
j...@arbash-meinel.com wrote:
Where is N^2 coming from?
If you add N units one-by-one each new add triggers all existing units
to wake up and ask for the Life
On Thu, Oct 31, 2013 at 12:37 AM, William Reade william.re...@canonical.com
wrote:
The service watch fires on any change to the document, and adding a unit
increments the service's unitcount field. The easy fix is to wrap the
service watcher so that it discards irrelevant changes; the hard
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I'm trying to put together a quick summary of what I've found out so
far with testing juju in an environment with thousands (5000+) agents.
1) I didn't ever run into problems with connection failures due to
socket exhaustion. The default upstart
On Wed, Oct 30, 2013 at 6:23 AM, John Arbash Meinel
j...@arbash-meinel.com wrote:
I'm trying to put together a quick summary of what I've found out so
far with testing juju in an environment with thousands (5000+) agents.
Great testing, John.
2) Agents seem to consume about 17MB resident
On Wed, Oct 30, 2013 at 9:23 AM, John Arbash Meinel
j...@arbash-meinel.comwrote:
2) Agents seem to consume about 17MB resident according to 'top'. That
should mean we can run ~450 agents on an m1.large. Though in my
testing I was running ~450 and still had free memory, so I'm guessing
there
Hi John,
This is awesome, its great to see this scale testing and analysis. Some
additional questions/comments inline.
On Wed, Oct 30, 2013 at 6:23 AM, John Arbash Meinel
j...@arbash-meinel.comwrote:
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I'm trying to put together a quick summary
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- From what I can tell, all units take out a watch on their
service so that they can monitor its Life and CharmURL. However,
adding a unit to a service triggers a change on that service,
even though Life and CharmURL haven't changed. If we
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4) If I bring up the units one by one (for i in `seq 500`; do for j
in `seq 10` do juju add-unit --to $j ; time wait; done), it ends
up triggering O(N^2) behavior in the system. Each unit agent seems
to have a watcher for other units of
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On 2013-10-30 18:11, Nate Finch wrote:
On Wed, Oct 30, 2013 at 9:23 AM, John Arbash Meinel
j...@arbash-meinel.com mailto:j...@arbash-meinel.com wrote:
2) Agents seem to consume about 17MB resident according to 'top'.
That should mean we can
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The log size didn't come up again in this email. Not sure if you
meant separately or just got lost in the message length.
I didn't explicitly enumerate it, but it is because of section (4).
Namely, bringing up 1000 units triggers 1000*1000
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