> > >>> > processors=`egrep -c ^cpu[0-9]+ /proc/stat || :` > >>> > I don't believe this works. It simply tells me how many logical > processors I have on my machine, i.e. it yields 4 opposed to 2. > > Does anyone know the current state of hyper-threading support for > Linux? I've heard that kernel 2.4.19 will contain some extra patches to > help with hyper-threading support. Currently we are testing kernels 2.4.7, > 2.4.16, and 2.4.18 with hyper-threading enabled. I've noticed that > performance is horrible for 2.4.7, and it appears to be poor for 2.4.16 and > 2.4.18 too. Are there any issues that exist with correctly enabling > hyper-threading? > Hi John, At my job we have been working with the 2.4.18 series of kernels, and have found with that with hyper threading turned on things get _really_ slow. Unfortunately, I don't know enough about hyperthreading to even begin to know where the problem is. Presently, we are simply turning it off. ...james _______________________________________________ Redhat-devel-list mailing list Redhat-devel-list@redhat.com https://listman.redhat.com/mailman/listinfo/redhat-devel-list
