On Tue, 2003-08-19 at 12:16, James Olin Oden wrote: > I think 2.4.18 of the linux kernel and beyond do so, and specifically RH 9 > supports hyper threading right out of the box. I have been using it on > some boxes supporting hyperthreading without any issues since the RH 9 > beta came out (phoebe). It works with Red Hat 7.3 too. The only problem is on biprocessor HT boxes, if you launch two processes that take 100% CPU, the kernel might schedule both of them on the same physical processor which gives horrible and unpredictable performance for the box. On one HT processor, both processes will be on the same physical processor (no choice :), but scheduling will be very unfair, assuming same total computation time, one will finish much earlier than the other. I don't know if these two problems are solved with more recent kernels, information anyone? Laurent _______________________________________________ Redhat-devel-list mailing list Redhat-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/redhat-devel-list
