Interestingly, there is an additional Comcast data-center (52 km away) which is not my default speedtest target.All independent internet speed-test providers, except one (Converse in Code) fall to the left of the center (The very top ones correspond to, the slightly lower ones, correspond to (Ookla, owned by Comcast). The darker blue points at the top-right of the chart are Comcast data-points.The data below, collected over different times, using various services, speaks for itself.
Average ping round-trips are roughly 3x to 6x times worse.Average upload speeds are roughly 2x worse.Average download speeds are roughly 2x worse.However whenever I test my speeds using other independent speed-test providers, my results are significantly and consistently worse. Here's an example of a screenshot from a test by Ookla (aka, owned by Comcast) where all numbers look good and as I expect them: When testing my speed using Comcast own speed-test service, the results say I'm getting the promised speed and then some. They don't say anything about upload-speeds or ping round-trip latencies, which is a shame. TLDR: if you have all prereqs installed, just type makeĬomcast claims my plan should give me dowload bandwitdh of 75 Mbps (Mega-bits per second).Change it to your favorite image viewer or ignore the error at the end. speedtests.R calls nomacs to view the generated chart.speedtests.R depends on R + the R libraries data.table, ggplot2, & scales.speedtests.R is an R script to generate a chart from the data-set.It figures out the closest N data-centers & checks the speed to each of them. my-speedtest.many is a perl-script wrapper around speedtest.The speedtest utility ( apt install speedtest-cli) collects speed data from various data-centers.# Today's speed-test chart should be created at: # Generate N-row data-set for N-closest speedtest data-centers Sudo apt-get install r-base r-cran-data.table r-cran-ggplot2 r-cran-scales Sudo apt-get install make coreutils perl speedtest-cli
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