dmesg | grep HPET [ 0.000000] ACPI: HPET 0x00000000BFFE274F 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000 I seem to indeed have a HPET in my VM. Does that mean that I should be able to use fq as intended or could the HPET be some kind of virtualized device? Regards, Hans-Kristian On 25 January 2017 at 22:09, Jonathan Morton wrote: > > > On 25 Jan, 2017, at 23:05, Hans-Kristian Bakke > wrote: > > > > Do I understand correctly that fq is really just hit and miss within a > VM in general then? Is there no advantage to the fair queing part even with > a low-precision clock? > > First, check using dmesg or whatever that you do, or do not, have a > working HPET within your VM. > > If this is a widespread problem, I could concoct a patch to sch_fq which > compensates for it. I already fixed the same problem when using part of > sch_fq as a basis for part of sch_cake, and demonstrated correct operation > on an old, slow PC without an HPET. > > - Jonathan Morton > >