Re: SCO: "thread creation is about a thousand times faster than on native Linux"

From: Ingo Molnar (
Date: Sun Aug 27 2000 - 16:57:01 EST

On Wed, 23 Aug 2000, Joerg Pommnitz wrote:

> quote> SCO's Juergen Kienhoefer tells us that by mapping clone processes
> quote> directly onto UnixWare's native threads, huge performance gains
> quote> can be realised. "Basically thread creation is about a thousand
> quote> times faster than on native Linux," he said. [...]

Linux creates a 'native Linux thread' via clone() in about 10
microseconds. So SCO creates a thread in 10 nanoseconds - ie. faster than
a cacheline load on most CPUs - wow!

glibc creates a pthread in about 300 microseconds, thats certainly slow.
(but then again, still faster than NT's thread creation latency.) I doubt
SCO creates a pthread in 0.3 microseconds.


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