[TriLUG] Questions about Threading
Tue, 26 Mar 2002 15:10:14 -0500 (EST)
On Tue, 26 Mar 2002, John F Davis wrote:
> Furthermore, there are threads and lightweight processes. Something that I
> read* recently (now I am an expert) which I think is neat is that
> solaris threads have a lot of spin lock nonsense in them. This means that
> they are not as fast as linux threads, however the extra spin locks
> become insignificant when scaled across multiple cpu's. This makes sense
> since Sun is fond of lots of processors whereas linux is limited by its
> support of multiple cpu's. (Is it 2 or 4 cpu's max?)
I've seen quad-CPU Linux systems, so it's definitely not a max of 2.
I think the limitation is more related to motherboard availability for
Intel processors, rather than than the Linux kernel.
I Googled a bit and can't find the upper limit for the 2.4 kernels, but
the 2.0 kernels supported up to 16 processors. I find it very unlikely
that that number has gone down for newer kernels.