Le 12 juin 2025 18:49:22 GMT+02:00, Michael Banck via Bug reports for the GNU Hurd <[email protected]> a écrit : >Hi, > >On Thu, Jun 12, 2025 at 09:54:22PM +0800, Zhaoming Luo wrote: >> On Wed, Jun 11, 2025 at 09:07:10PM +0200, Michael Banck wrote: >> > 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. > >Alright, I tried that (rebuilding the current Debian unstable gnumach package), >but (at least on i486) it hangs early on boot in KVM:
With which qemu command? There is a bug when you use qemu -smp 2 Compile gnumach with --disable-linux-groups --enable-apic --enable-ncpus=4 or 8 and in qemu use -smp 1 or 3 or 4 expect 2 > >|Loading GNU Mach ... >|Loading the Hurd ... >|ow:13148 high:21913 >|vm_page: HIGHMEM: pages: 301024 (1175M), free: 0 (0M) >|vm_page: HIGHMEM: min:15051 low:18061 high:30102 >|ACPI v1.0 >|HPET at physical address 0xfed00000 >|ACPI: >| rsdp = 0x47ffe1ac6 >| rsdt/xsdt = 0xf8e90ac6 (n = 4) >|8 bit APIC ids >|APIC entry=0xf8e92a1a end=0xf8e92a66 >|APIC entry=0xf8e92a1a end=0xf8e92a66 >|APIC entry=0xf8e92a22 end=0xf8e92a66 >|APIC entry=0xf8e92a2e end=0xf8e92a66 >|APIC entry=0xf8e92a38 end=0xf8e92a66 >|APIC entry=0xf8e92a42 end=0xf8e92a66 >|APIC entry=0xf8e92a4c end=0xf8e92a66 >|APIC entry=0xf8e92a56 end=0xf8e92a66 >|APIC entry=0xf8e92a60 end=0xf8e92a66 >|Unhandled APIC entry type 0x4 >|CPUS: >| CPU 0 - APIC ID 0 - addr=0xf8e96000 >|IOAPICS: >| IOAPIC 0 - APIC ID 0 - addr=0xf8e97000 >|IOAPIC version 0x11 >|IRQ override: pin=0 gsi=2 trigger=EDGE polarity=HIGH >|IRQ override: pin=5 gsi=5 trigger=LEVEL polarity=HIGH >|IRQ override: pin=9 gsi=9 trigger=LEVEL polarity=HIGH >|IRQ override: pin=10 gsi=10 trigger=LEVEL polarity=HIGH >|IRQ override: pin=11 gsi=11 trigger=LEVEL polarity=HIGH >|IOAPIC 0 configured with GSI 0-23 > > >Michael > Hi,
