Writing the total request time in seconds to an nginx access log, possibly using a calculated variab

I’m trying to modify my nginx access log format to include the request
duration, in seconds.

I see two possible variables I could use:

  1. $request_time (http://wiki.nginx.org/HttpLogModule#log_format)

  2. $upstream_response_time

However both of these variables are expressed in microseconds, and I
this value to be rendered in seconds. Is there any way to specify the
as an expression (i.e. $request_time * 1000) or accomplish this in some
other way?


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