Idle Hacking

I did some testing on a really fast machine today. It's Dell PowerEdge 2900.
It has two:

• CPU:2x: Quad Core Intel® Xeon® E5410, 2x6MB Cache, 2.33GHz, 1333MHz FSB
• Memory:8GB 667MHz (8x1GB), Dual Ranked DIMMs
• Disk:146GB 15K RPM Serial-Attach SCSI 3Gbps

Running mongrel-esi 0.5.4, load testing a page with 9 esi fragments

4 unique fragment servers

• frag1 sends 1,024 bytes and delays 0.05 before sending and is requested 3 times.
• frag2 sends 4,096 bytes with no extra delay and is requested 2 times.
• frag3 sends "<p>Hello there user</p>" with no extra delay and is requested 2 times.
• frag4 sends 4,096 bytes with no extra delay and is requested 2 times.

The origin server sends 38,448 bytes with no extra delay and a max age of 10 seconds.

Fragments are given a max-age between 1 and 3 seconds.

Here are the performance charts from mongrel-esi 0.4 to 0.5.4, running 1000 requests: