This is not a direct answer to the question, but I feel like it clarifies things, and it is too long for a comment.
I think, you should not compare UNIX threads to processes (fork()). This question seems to suggest that threads are somehow supersede processes, which is not true. Both of them have their advantages and disadvantages, and ultimately it is the ...
For creating threads on linux, we need to use pthread interface.
Pthread is part of POSIX standard which defines C language interface
for creating and managing threads. Linux provides implementation of
I found this in the "How ... maps" link. So "Pthreads" is the correct, but also easy answer. It is a bit like saying: For network connections ...
In Java 1.1, green threads were the only threading model used by the Java virtual machine (JVM),9 at least on Solaris. As green threads have some limitations compared to native threads, subsequent Java versions dropped them in favor of native threads. 10,11.
Source: Green threads
Below is an illustration that shows how to analyze Java threads from ...
With the -T0 multithread option you tell xz two things at once. To use MT also means: wait until all input (data) is read into memory, and then start to compress in "parallel".
After including pigz into my tests I analyze the perfomance step by step; I have a 100M file f100.
$ time xz -c f100 >/dev/null