[TS-1381] Performance of server intercept without Content-Length is poor

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: HTTP, Performance
• Assignee: Unassigned
• Reporter: Leif Hedstrom
• Created: 25/Jul/12 23:13
• Updated: 04/Feb/16 19:02
• Resolved: 11/Jun/15 16:58

Description

When using a server intercept plugin, if the plugin is unable (for whatever reason) to inject a Content-Length header, we perform chunked encoding on the body. This turns out to be pretty slow, I'm seeing at least 5-8x slowdown doing this chunking, vs simply setting a CL: header.

The reason I'm filing this is because for certain server intercept plugins, such as an fcgi plugin, this could be bad for performance. I can see that there would be some overhead doing the chunking, but 800% seems very steep.