Call for performance evaluation: net.isr.direct (fwd)

Poul-Henning Kamp phk at phk.freebsd.dk
Fri Oct 14 22:12:55 PDT 2005


In message <20051015084425.C1403 at epsplex.bde.org>, Bruce Evans writes:
>On Fri, 14 Oct 2005, Poul-Henning Kamp wrote:

>> Even to this day new CPU chips come out where TSC has flaws that
>> prevent it from being used as timecounter, and we do not have (NDA)
>> access to the data that would allow us to build a list of safe
>> hardware.
>
>Um, I have already pointed out that NDAs are not necessary.
>
>They (and staic lists) are also not sufficient.  [...]

Which is why I am totally set against using the TSC on SMP machines
and only grudingly accept it for UP machines that do not have
ACPI counters.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


More information about the freebsd-net mailing list