On Tue, 2007-02-06 at 13:28 +0000, James Wilkinson wrote: > Gilboa Davara wrote: > > > $ cat /proc/cpuinfo > > > processor : 0 > <snip> > > > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat > > > pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc up pni > > > monitor ds_cpl cid xtpr > > > bogomips : 6789.41 > > > > You -might- want to enable HT (hyper threading) in the machine's BIOS, > > and test the performance. > > Some applications get a nice 10-15% boost by enabling Hyper Threading. > > Unfortunately, the "ht" flag just means that the machine supports the > hyperthreading way of checking how many logical processors there are in > the machine. In this case, I believe that the absence of the "siblings" > field means that the processor doesn't actually support more than one > logical processor (effectively, it doesn't support hyperthreading). > > > Either way, switching to x86_64 should improve the performance somewhat. > > (x86_64 doesn't require high-memory support - which should reduce the > > over-head somewhat) > > Similarly, I think you need the "lm" flag for 64 bit mode. > > I'd agree with your other suggestions. Linux should be able to make full > use of available memory without manual reconfiguration. > > Hope this helps, > > James. I'm not sure. As far as I remember (...Intel never bothered to release a Family/Model/Stepping table), 15/3/4 (Family/Model/stepping) is a Prescott core. (Notice the pni in the end of CPU features). While it may be an older Celeron core (which lacked AMD x86_64 support) - as far as I remember, it did include HT support. - Gilboa
