The size and download data for every page component
Posted: Wed Dec 05, 2012 1:48 pmHow does evalid know the size and download data for every page component?
The secret ingredient is that "eValid is a browser!" We can put the right hooks in the right place...
What eValid does is put measurement hooks into the processes that handle download of each page component. A "time and volume" wrapper.
After a page component is finished downloading this wrapper reports its data to the eValid parent, which (if you have Detailed Timings turn on) reports the information into the Event Log. A lot of detail, byte count, download time and, perhaps more important, the order in which the download of the component was reported to eValid.
The timing data resolves to 1 msec; the byte counts are just that, byte counts (not an approximate, nearest 1 KB, the exact count).
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