K 10 svn:author V 3 jhb K 8 svn:date V 27 2006-03-09T16:38:52.000000Z K 7 svn:log V 298 Flip the switch and don't route interrupts to hyperthreads in a HT system. In at least one benchmark this showed around a 20% performance increase. If other workloads do benefit from having hyperthreads service interrupts, we can always make this a loader tunable. MFC after: 3 days Tested by: ps END