Summary of discussion of harvester/random locking and
andrea+freebsd_current at webcom.it
Sat Aug 21 11:05:20 PDT 2004
On Sun, Aug 15, 2004 at 05:46:16PM +1000, Peter Jeremy wrote:
> >systems may not have a TSC, and insead read the system clock (ouch!). We
> >may want to investigate what approaches we can use to mitigate this,
> >especially if systems like soekris boxes don't have TSC.
> in efficiently supporting the i486. If the various low-end iA32 clones
> do support the TSC, there seems little point in changing the status quo.
Since nobody chimed in yet, my Soekris box has:
kern.timecounter.choice: ELAN(-2000) i8254(0) dummy(-1000000)
This is the ELAN-based model, which is a 486 class CPU. More powerful
models might or might not have the TSC. I haven't investigated the
cost/benefit of using ELAN timecounter instead of i8254.
I believe the technical term is "Oops!"
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