Re: SMP question

Artemio (artemio@artemio.net)
Wed, 11 Jun 2003 22:52:40 +0300


OK guys, thanks for all your replies.

What I have is the following.

I'm building a hard real-time Linux (RTLinux) system on a 2x Xeon machine. If
I compile and run a 2.4.18 kernel with SMP support, rtlinux hangs the
machine. However, with SMP disabled, rtlinux and all it's hard-realtime
applications runs okay.

So, I have to deside between these two:

- Run rtlinux and hard-realtime applications on a kernel without SMP support.
How much performance will I loose this way? Is SMP *THAT* critical?

- Run all tasks in a usual way, no hard realtime, but with SMP support.

What would you suggest?

Also, if I turn hyperthreading off, how will it influence the system with SMP
support? Without SMP support?

Thanks!

Artemio.
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