Worth noting this is from 2003. The performance concerns of event-based servers have been greatly alleviated by both hardware and software advancements.
The test setup used for this paper was a "2x2000 MHz Xeon SMP with 1 GB of RAM running Linux 2.4.20". Solid PC server iron for 2003, but basically equivalent to a $5/month server from Digital Ocean today.
If you're looking to squeeze 100,000 concurrent tasks from that $5 server, this paper is relevant to you.
The test setup used for this paper was a "2x2000 MHz Xeon SMP with 1 GB of RAM running Linux 2.4.20". Solid PC server iron for 2003, but basically equivalent to a $5/month server from Digital Ocean today.
If you're looking to squeeze 100,000 concurrent tasks from that $5 server, this paper is relevant to you.