Http_poller response time of the requested URL

zhmq0124v · April 20, 2016, 8:07am

Dear ELK funs,

I am playing with http_poller plugin, and found runtime_seconds in the returned metadata, does runtime_seconds stand for the response time(first byte sent and last byte received) of the requested URL?
I found its value is 0.109s while in my tomcat server log, time taken to process the request (%D) is 0.437s, so it seems it's not.
So my question is what runtime_seconds stands for and how to get performance(real response time) of the requested URL? Thanks.

Best Regards,
Mingquan

magnusbaeck · April 20, 2016, 5:19pm

As I read the code execution_time really is the difference between the start time and the completion time of the request. (below) It's pretty easy to check by sniffing the network traffic.

github.com

logstash-plugins/logstash-input-http_poller/blob/v2.0.6/lib/logstash/inputs/http_poller.rb#L152-L162


def request_async(queue, name, request)
  @logger.debug? && @logger.debug("Fetching URL", :name => name, :url => request)
  started = Time.now


  method, *request_opts = request
  client.async.send(method, *request_opts).
    on_success {|response| handle_success(queue, name, request, response, Time.now - started)}.
    on_failure {|exception|
    handle_failure(queue, name, request, exception, Time.now - started)
  }
end