On Sat, 17 Jan 2026 14:39:54 +0000 Crystal Kolipe <[email protected]> wrote:
> On Sat, Jan 17, 2026 at 06:18:30AM -0800, Thomas Frohwein wrote: > > cpu0: Intel(R) Core(TM) Ultra 7 155H, 4489.51 MHz, 06-aa-04, patch > > 00000025 > > Do you get good CPU performance out of this system? > > Your dmesg shows that you have all of the cores enabled, which > includes P, E, and LPE cores. > > Depending on your workload, the OpenBSD scheduler will happily > schedule two processes on the LPE cores and leave the others idle. > > My experience with this CPU model has been that, (at least under > OpenBSD), it almost always perfoms better with just the 'P' cores > enabled. I've tried with and with out E/LPE enabled and I've noticed some occasional slowness with all cores on. I assume that's what you're describing; that the key processes are scheduled on the LPE cores then. But I suspect I can compile more efficiently with -j8 (or more) than -j6.
