SpeedTracer NETWORK_RESOURCE_RESPONSE vs NETWORK_RESOURCE_FINISH

Posted by Ben Flynn on Super User See other posts from Super User or by Ben Flynn
Published on 2010-12-22T21:00:04Z Indexed on 2010/12/22 21:56 UTC
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I'm using SpeedTracer with GoogleChrome to measure the load times of requested resources.

The SpeedTracer site says: NETWORK_RESOURCE_RESPONSE "Indicates that the renderer has started receiving bits from the resource loader"

NETWORK_RESOURCE_FINISH "Indictes a resource load is successful and complete."

In my mind that means we would always see a network resource response (bytes are arriving) before we see a finish (all bytes received). This doesn't seem to be the case at all. Here is a sample:

Request Timing @33519ms for 926ms
Response Timing @34445ms for -847ms
Total Timing @33519ms for 78ms

I'm guessing response time isn't supposed to be negative. Can someone explain this or is this a bug? I'm using Chrome 10.0.612.3 dev with a SpeedTracer I downloaded today.

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