Any comment about speedtest.net on how accurate their utility/apps? like maybe compare to pathchar...
Well, if I cap a bandwidth to say 1Mbps, pathchar shows it @ 95% right. But speedtest.net shows otherwise.
There are many factor that can affect speed and latency not only from the network side but also from the system and application side, speedtest.net should mention that somewhere in their website.
Accurate? It's not very accurate at all. Lots of factors come into play.
To test your bandwidth, you need to test your speed with something at the ISP...however, if the ISP's upstream sucks...well, you get the picture.
Now if you want to test the approximate speed/bandwidth seen by someone on the speedtest.net network connecting to your network, or to a server on the speedtest.net network, then it will be a pretty accurate measurement! :)
(please rate the post if this helps!)
Bandwidth metering websites are never 100% accurate because their speed report depends on your connection to their application.
You will get different speed report depending upon the time of day (how busy is the backbone that connects your computer to theirs) as well as how many users are executing their speed report at that time.
For an accurate representation of your speed, talk to your ISP and see if they have a testing FTP server or speed meter application. Plenty of them do but don't advertise it to the masses.
As for speedtest.net I find their speed meter application to be better than most.