Test	Metric	Platforms	Description
Download (TCP)	Download speed	Whiteboxes, Routers, Android, iOS	The download speed in Mbps when downloading (using TCP) random bytes from a test server
	TCP Retransmissions	Whiteboxes, Routers	The number of retransmitted TCP segments/packets
	Burst download speed	Whiteboxes, Routers	The download speed during the first 5 seconds of a test
	Sustained download speed	Whiteboxes, Routers	The download speed of the test during the last 5 seconds
	Percentage of Best	Whiteboxes, Routers	Download speed result as a percentage of the user's best ever result
	Percentage of Advertised	Whiteboxes, Routers	Download speed result as a percentage of their package's advertised downstream speed
Download (HTML5)	Download speed	Web	The download speed in Mbps when downloading (using TCP) random bytes from a test server using HTML5 APIs(WebSockets and Fetch)
Download (Lightweight UDP)	Download speed	Whiteboxes, Routers	The download speed in Mbps when downloading (using UDP) from a test server, using less data than the TCP test
Download (Hardware acceleratedUDP)	Download speed	Broadcom-based Routers	The download speed in Mbps when downloading (using UDP) random bytes from a test server
Upload (TCP)	Upload speed	Whiteboxes, Routers, Android, iOS	The upload speed in Mbps when uploading (using TCP) random bytes to a test server
	Percentage of Best	Whiteboxes, Routers	Upload speed as a percentage of their best ever upload speed
	Percentage of Advertised	Whiteboxes, Routers	Upload speed as a percentage of their advertised upload speed
Upload (HTML5)	Upload speed	Web	The upload speed in Mbps when uploading (using TCP) random bytes to a test server using HTML5 APIs (WebSocketsand Fetch)
Upload (Lightweight UDP)	Upload speed	Whiteboxes, Routers	The upload speed in Mbps when transmitting (using UDP) to a test server, using less data than the TCP test.
Upload (Hardware acceleratedUDP)	Upload speed	Broadcom-based Routers	The upload speed in Mbps when transmitting (using UDP) random bytes to a test server
Latency	Latency	Whiteboxes, Routers, Android, iOS	Average round-trip time of a series of echo packets transmitted over UDP
	Packet Loss	Whiteboxes, Routers, Android, iOS	Percentage of packets lost not received within two seconds of sending
	Jitter Up	Whiteboxes, Routers, Android, iOS	Variability of packet latency upstream
	Jitter Down	Whiteboxes, Routers, Android, iOS	Variability of packet latency downstream
	Contiguous Packet Loss (Availability/Disconnections)	Whiteboxes, Routers	Periods of time where more than 2 consecutive packets are lost
	MOS (Mean Opinion Score)	Whiteboxes, Routers, Android, iOS	Grading of the quality of a voice call, on a scale of 1 (worst) to 5 (perfect)
Latency (HTML5)	Latency	Web	Round trip time for a series of packets sent to our test server over WebSockets
Latency and packet loss(ICMP)	Latency	Whiteboxes, Routers	Average round-trip time of a series of ICMP echo packets
	Packet Loss	Whiteboxes, Routers	Percentage of ICMP packets lost not received within two seconds of sending
Website PerformanceTest	Time to visually complete	Whiteboxes, Routers	The time taken to render the complete web page, with the page 100% loaded visually
	Time to engine complete	Whiteboxes, Routers	The time taken for the web browser's engine to say that the web page had finished loading (note that this maydiffer from visual completeness)
	Time to first visual	Whiteboxes, Routers	The time taken to render the first visual element of a web page
	Average object transfer time	Whiteboxes, Routers	The average time taken to transfer each object referenced by the web page
	Average object TCP connection time	Whiteboxes, Routers	The average time taken to establish a TCP connection to the origin servers that host the web page content
	Average object DNS resolution time	Whiteboxes, Routers	The average time taken to resolve DNS for the content servers that provide the web page content
	Failure Rate	Whiteboxes, Routers	The failure rate when loading a web page
Web browsing lite	Page Load Time	Whiteboxes, Routers, Android, iOS	Measures the time taken to fetch the HTML and referenced resources from a page of a popular website
	Failure Rate	Whiteboxes, Routers, Android, iOS	The percentage of failures to fetch the HTML of a website
DNS	DNS Resolution Time	Whiteboxes, Routers	The DNS resolution time of a selection of common website domain names
	DNS Failure Rate	Whiteboxes, Routers	The rate of DNS resolution failures
	DNS-over-HTTPS Resolution Time	Whiteboxes, Routers	The DNS resolution time of a selection of common website domain names using DNS-over-HTTPS
	DNS-over-HTTPS Failure Rate	Whiteboxes, Routers	The rate of DNS resolution failures when using DNS-over-HTTPS
Netflix	Netflix Downstream Speed	Whiteboxes, Routers	The download speed when downloading content from Netflix
	Netflix Bitrate Reliably Streamed	Whiteboxes, Routers	The bitrate that can be reliably streamed without stalls
	Netflix Startup Delay	Whiteboxes, Routers	The amount of time for the video to fill the buffer with two seconds of video / start playing
	Netflix TCP Connect Time	Whiteboxes, Routers	The TCP connect time to the Netflix server
	Netflix Bitrate % of Max	Whiteboxes, Routers	The bitrate as a percentage of the max bitrate attempted/possible
YouTube	YouTube Bitrate Reliably Streamed	Whiteboxes, Routers, Android, iOS	The bitrate that can be reliably streamed without stalls
	YouTube Startup Delay	Whiteboxes, Routers, Android, iOS	The amount of time for the video to fill the buffer with two seconds of video / start playing
	YouTube TCP Connect Time	Whiteboxes, Routers, Android, iOS	The TCP connect time to the YouTube server
	YouTube Bitrate % of Max	Whiteboxes, Routers	The bitrate as a percentage of the max bitrate attempted/possible
BBC iPlayer	iPlayer Bitrate Reliably Streamed	Whiteboxes, Routers	The bitrate that can be reliably streamed without stalls
	iPlayer Startup Delay	Whiteboxes, Routers	The amount of time for the video to fill the buffer with two seconds of video / start playing
	iPlayer TCP Connect Time	Whiteboxes, Routers	The TCP connect time to the iPlayer server
	iPlayer Bitrate % of Max	Whiteboxes, Routers	The bitrate as a percentage of the max bitrate attempted/possible
Hulu	Hulu Bitrate Reliably Streamed	Whiteboxes, Routers	The bitrate that can be reliably streamed without stalls
	Hulu Startup Delay	Whiteboxes, Routers	The amount of time for the video to fill the buffer with two seconds of video / start playing
	Hulu TCP Connect Time	Whiteboxes, Routers	The TCP connect time to the Hulu server
DOTA2	Latency	Whiteboxes, Routers	ICMP Round-trip time latency to a DOTA2 server
	Packet Loss	Whiteboxes, Routers	ICMP Percentage of packets lost not received within two seconds of sending
League of Legends	Latency	Whiteboxes, Routers	ICMP Round-trip time latency to a League of Legends server
	Packet Loss	Whiteboxes, Routers	ICMP Percentage of packets lost not received within two seconds of sending
FIFA 2018/2019	Latency	Whiteboxes, Routers	ICMP Round-trip time latency to a FIFA server
	Packet Loss	Whiteboxes, Routers	ICMP Percentage of packets lost not received within two seconds of sending
Apex Legends	Latency	Whiteboxes, Routers	ICMP Round-trip time latency to the Apex Legends servers
	Packet Loss	Whiteboxes, Routers	ICMP packet loss (as a percentage) for packets sent to the Apex Legends servers
Fortnite	Latency	Whiteboxes, Routers	ICMP Round-trip time latency to the Fortnite servers
	Packet Loss	Whiteboxes, Routers	ICMP packet loss (as a percentage) for packets sent to the Fortnite servers
Multicast IPTV	Jitter	Whiteboxes, Routers	The jitter of the incoming video stream
	Channel change time	Whiteboxes, Routers	How long it takes to join a new multicast group (change TV channel)
CDN	Object fetch time	Whiteboxes, Routers	How long it takes to fetch a small object from the CDN
	Object fetch speed	Whiteboxes, Routers	How fast an object can be fetched from the CDN
	TCP connection establishment time	Whiteboxes, Routers	The latency to the CDN
VOIP SIP	Jitter Up	Whiteboxes, Routers	Variability of packet latency upstream for a SIP connection
	Jitter Down	Whiteboxes, Routers	Variability of packet latency downstream for a SIP connection
	Mean Opinion Score (MOS)	Whiteboxes, Routers	Grading of the quality of a voice call, on a scale of 1 (worst) to 5 (perfect)
Latency (HTML5)	Latency	Web	Round trip time for a series of packets sent to our test server over WebSockets
Latency and packet loss(ICMP)	Latency	Whiteboxes, Routers	Average round-trip time of a series of ICMP echo packets
	Packet Loss	Whiteboxes, Routers	Percentage of ICMP packets lost not received within two seconds of sending
Traceroute	None	Whiteboxes, Routers	No metrics at present, currently just used internally for debugging
Data usage	Wired LAN traffic	Whiteboxes, Routers	Volume of customer traffic generated and received by wired LAN devices
	Wi-Fi traffic	Whiteboxes, Routers	Volume of customer traffic generated and received by Wi-Fi devices
	SamKnows traffic	Whiteboxes, Routers	Volume of SamKnows test traffic
Online Storage	Download speed	Whiteboxes, Routers	The download speed in Mbps when downloading content from Google Drive, Amazon, Dropbox, OneDrive andSharepoint
Steam	Download speed	Whiteboxes, Routers	The download speed in Mbps when downloading a game from Steam's network
	TCP connection time	Whiteboxes, Routers	The TCP connection establishment time to Steam's network