making sense of the timer(s) sequence

From: Jeffrey 'jf' Lim <>
Date: Tue, 19 Aug 2008 17:36:59 +0800

hi guys, i'm hoping to get a better sense of the timers and values in the logs, and am looking to clarify my own understanding in terms of both the sequence, and the meaning of the various timers. The following is what i've arrived at. Is the following understanding correct?

In terms of a timeline, this is what happens: (assuming option httpclose, to make things simpler)

half of Tw - a connection comes in, and may spend some time waiting in the listener's queue (*INCLUDING connection establishment) Tq - client sends request over
the other half of Tw - time in the server queue Tc - syn, syn-ack delay to server
Tr - server header response time
Td (which is not logged directly)

Am i correct?



In the meantime, here is your PSA:
"It's so hard to write a graphics driver that open-sourcing it would not help."

Received on 2008/08/19 11:36

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