On Sun, Jan 3, 2010 at 5:26 AM, Leif K-Brooks <eurleif@gmail.com> wrote:

I operate Omegle (http://omegle.com/), which is a COMET-driven
Twisted.Web app. (It doesn't use Nevow or anything; just Twisted.Web.)
It gets fairly heavy traffic; right now, it peaks daily at around 6500
concurrent users. Technical details:

You should write a success story! I've used Omegle when the boredom hits hard.

- Hosted on a Linode 2880 virtual private server
(https://www.linode.com/); Ubuntu, 2880 MB of RAM, 4 cores available
- EPollReactor

Omegle currently runs at close to 100% CPU for most of the day, and
I'm a bit concerned about that.

Try use the standard reactor instead of epoll. I found a similar problem when I switched my product to the epoll reactor, the cpu usage problem went away when I reverted back to the normal reactor.