Hello,
We are using ATS v8.1 and would like to understand better how to log the total
time spent in a HTTP transaction (including the full body transfer time)
towards the client.
For that, we are using the field %<ttms>, for the Client-Proxy Connection time.
Looking at the ATS documentation, the meaning for <ttms> is:
"Time in milliseconds spent by Traffic Server processing the entire client
request. Measured from the time the connection between the client and Traffic
Server proxy was established until the last byte of the proxy response was
delivered to the client."
At this moment, our logging.yaml for the access.log is the following:
format: '%<cqtd>:%<cqtt> "%<cqtx>" %<shn> %<shi> %<sssc> %<pfsc> %<stms>
%<ttms>'
Log example:
2023-05-29:14:20:41 "GET http://trafficserver/media/stream_421342430.cmfv
HTTP/1.1" origin2 0 200 FIN 18 19
But comparing to client browser network timings, we see times of hundreds of
milliseconds. For the above example, the total time was 506ms.
HTTP Timing breakdown:
Connection setup: 1.85
Request sent: 30.88
Wait response: 49.44
Content Download: 423.36
TOTAL: 505.53 ms
I cannot find any correlation.
Could you tell if it is possible to achieve this?
Thanks in advance.
Nuno Baeta
[email protected]<mailto:[email protected]>
