In .239 s the file was transferred. The kernel and user time was less than one millisecond. This means most of the time was spent waiting for packets to arrive in the machine from the network. Essentially all the time was spent in input and output rather than moving or changing data in the computer.
On a modern PC, the CPU and memory can move gigabytes of information in a second. Our network connection to the internet may be as slow as a few kilobytes per second.
The three numbers are simply accounting for how time was spent while the programme, wget started, received the file and stop. see man time for more information.
man time
SYNOPSIS
time [ -apqvV ] [ -f FORMAT ] [ -o FILE ]
[ --append ] [ --verbose ] [ --quiet ] [ --portability ]
[ --format=FORMAT ] [ --output=FILE ] [ --version ]
[ --help ] COMMAND [ ARGS ]
DESCRIPTION
time run the program COMMAND with any given arguments ARG.... When
COMMAND finishes, time displays information about resources used by
COMMAND (on the standard error output, by default). If COMMAND exits
with non-zero status, time displays a warning message and the exit sta-
tus.
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