By taking Honza's suggestion to use deterministic web pages, I start to think this might be a false alarm. The HAR file generated by Chrome didn't include everything. For example, by using web page replay, the log showed Chrome had made an request to fetch the mp4 file, `2019/08/01 17:36:20 ServeHTTP(http://www.partridgegetslucky.com/vid/partridgeGetsLucky.mp4): serving 206, 2912257 bytes`, but this request didn't get included in the HAR file generated by Chrome. Since the HAR file wasn't reliable, so I compared the web page replay log again for both Chrome and Firefox loading https://ebay.com. I noticed we made a lot of requests OCSP related requests, for example, something like `2019/08/02 10:11:22 ServeHTTP(http://ocsp.godaddy.com/): serving 200, 5 bytes` . After I removed all OCSP related requests, it turned out we made pretty much the same amount of http requests as Chrome. This might also explain why I didn't see these differences on GVE, probably because we didn't do OCSP on GVE? Andrew, do you know how datalog collects these data? I think we should confirm OCSP requests are not included in the results.
Bug 1565701 Comment 12 Edit History
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By taking Honza's suggestion to use deterministic web pages, I start to think this might be a false alarm. The HAR file generated by Chrome didn't include everything. For example, by using web page replay, the log showed Chrome had made an request to fetch the mp4 file, `2019/08/01 17:36:20 ServeHTTP(http://www.partridgegetslucky.com/vid/partridgeGetsLucky.mp4): serving 206, 2912257 bytes`, but this request didn't get included in the HAR file generated by Chrome. Since the HAR file wasn't reliable, so I compared the web page replay log again for both Chrome and Firefox loading https://ebay.com. I noticed we made a lot of requests OCSP related requests, for example, something like `2019/08/02 10:11:22 ServeHTTP(http://ocsp.godaddy.com/): serving 200, 5 bytes` . After I removed all OCSP related requests, it turned out we made pretty much the same amount of http requests as Chrome. This might also explain why I didn't see these differences on GVE, probably because we didn't do OCSP on GVE? Andrew, do you know how datadog collects these data? I think we should confirm OCSP requests are not included in the results.