Allow me to chime in: absolutely! There should be no unnecessary EC2
calls. I rely on the instances file, although I suppose using spot
instances could call it into question. Perhaps spot instances should
(or are) listed in a different file.
Paul
On 20110926 9:41 , Tom White wrote:
Karel,
I think using the instances file would be fine for run-script.
Adrian, is it possible to disable some of these API calls in jclouds?
E.g. DescribeImages is not needed for operations that work on running
instances.
Cheers,
Tom
On Mon, Sep 26, 2011 at 9:28 AM, Karel Vervaeke<[email protected]> wrote:
I have been using whirr call simple scripts using whirr run-script,
but I have to say it's running way too slow to be usable.
Running parallel-ssh to call a simple script on a 2-node EC2 cluster
takes about 7 seconds.
Running the same script (more or less) takes more than 1min 30 secs.
I know that's comparing I'm apples with comfy chairs: Whirr is making
EC2 calls to check regions,zones, available hosts, ...
but all those EC2 api calls (I have counted 17, see attached log file)
come with a price (well, with time).
Are the EC2 calls really necessary? Maybe we should skip them
alltogether (look in the instances file) or provide caching cache the
EC2 results...
WDYT?
Karel
--
Karel Vervaeke
http://outerthought.org/
Open Source Content Applications
Makers of Kauri, Daisy CMS and Lily
