Re: [Qemu-devel] Reporting Heisenbugs in qemu

[Artyom Tarasenko]

On Tue, May 7, 2013 at 11:43 PM, Torbjorn Granlund <address@hidden> wrote:
> Artyom Tarasenko <address@hidden> writes:
>
>   Do I read it correct that qemu-system-ppc64 with the slowdown factor
>   of 33 is ~3 times faster than qemu-system-sparc64 with the slowdown
>   factor of 96 ?
>
> You read it correctly.
>
> But please see the caveat at the table end.
>
>   Do they both use Debian Wheezy guest? You have a remark that ppc64 has
>   problems with its clock. Was it taken into account when the slowdown
>   factors were calculated?
>
> The time of a job is computed as the difference between a time stamp
> made by the test system and the report time.  The first time is affected
> by ppc64's slow clock, the latter is correct.
>
> A cron job sets the clock every 30 minutes, so the ppc time might be
> *overestimated* < 30 minutes.

Meaning it's even faster than estimated? That's fast. I don't see in
the table, how long does the build take?

--
Regards,
Artyom Tarasenko

linux/sparc and solaris/sparc under qemu blog:
http://tyom.blogspot.com/search/label/qemu