I found a micro instance to be unpredictable with weird behavior. I don't know how they are implemented. When I moved to a small instance my problems went away.
You get what you pay for :-) On Fri, Feb 17, 2012 at 4:22 AM, Kris Walker <[email protected]> wrote: > Thanks All: > > On Feb 17, 1:14 am, Christopher Jeffrey <[email protected]> wrote: > > This might be an ec2 problem. Are you sure it was 100% cpu and not > > just a 1.00+ system load? ec2 had a problem where node would get > > thrown into the uninterruptible sleep state forever, waiting on io. > > Yeah, I remember that thread about EC2 instances going into "sleep > state" with Node.js. I don't think that is the issue, because I have a > 3rd party health checker pinging it every 60 seconds. > > I'm not sure how to detect if the processor is running at 99%-100% or > 1.00+ system load by AWS terms. `top` reported the Node.js process to > hit 99% CPU every time it was hit with a request event. It reported > 10% - 20% for the exact same requests after restarting. AWS says a > micro instance will be throttled back if it persists above 1.00 CPU > unit. Judging by the behavior of the instance, I think that is what > happened. > > I'm trying to figure out how to prevent a process from crawling > upwards over a period of time until the limit is being constantly hit. > Right now the only solution is to kill it and start over. > > -- > Job Board: http://jobs.nodejs.org/ > Posting guidelines: > https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines > You received this message because you are subscribed to the Google > Groups "nodejs" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en
