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Tracking down performance bottlenecks in PYDAP-powered ZPTs

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Issue: this page takes 5~7 seconds to load initially and then ~4 seconds thereafter

I added code to the ZPT to print out some load times (via time.time() differncing). The last line of the ZT as it now renders is this output. Elements are:

DAP openAP loopAT loopDT loopRH loopRD loopLoop totalScript total
1.13s (dap open) 0.54s (loop) 0.53s (loop) 0.53s (loop) 0.54s (loop) 0.52s (loop) 2.66s (loop total) 3.79s (total)

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