We have instrumented the "nwsip.pl" script to evaluate the performance of the NWS server.
The timing of each NWS query has been recorded in a log, using the gettimeofday Unix system call. Its accuracy largely exceeds the measured intervals.
Several experiments have been run in NWS installation at CNAF:
Although one might expected that "nws_extract" take a longer time (since it requires the access to a memory server, that in our case is located on the sensor), it is nonetheless difficult to justify a difference of one order of magnitude.
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