Taken from the previous discussion (https://news.ycombinator.com/item?id=11722775 https://news.ycombinator.com/item?id=11722775): "This is from Netflix, it dow

Taken from the previous discussion (https://news.ycombinator.com/item?id=11722775 https://news.ycombinator.com/item?id=11722775): "This is from Netflix, it downloads Netflix content and reports the speed back. This is important because unlike your average Internet speed test (which ISPs take pains to optimize), there's a very real possibility that your ISP is happy to let your Netflix experience suffer - assuming they don't throttle it outright". It's not for deep network testing, it's just to see if your Netflix is being slowed down or not.