On Wed, Jun 11, 2025 at 09:07:10PM +0200, Michael Banck wrote: > Hi, Hi > > On Mon, Mar 24, 2025 at 12:25:51PM +0800, Zhaoming Luo wrote: > > Integrate HPET so host_get_time, host_get_time64, and host_get_uptime64 > > are more precise. The highest precision can be 10ns when this patch is > > applied. > > Is there something else besides this patch that needs to be > done/patched/configured to get higher resolution timers? > > I am running the current gnumach Debian package which (to the best of my > knowledge) includes this patch, but clock_getres() still reports > 10000000 ns timer resolution and applications like PostgreSQL that rely > on timing still have 10ms resolution. > The current higher resolution depends on HPET, and the HPET will be enabled when APIC is enabled[0]. Therefore, please try to compile a gnumach kernel with --enable-apic in the ./configure stage.
[0]: https://cgit.git.savannah.gnu.org/cgit/hurd/gnumach.git/tree/i386/i386at/model_dep.c#n232 Best, Zhaoming
