Pending issues

Eric Anderson anderson at centtech.com
Tue Aug 9 13:55:55 GMT 2005


John Baldwin wrote:
> On Friday 05 August 2005 10:01 am, Eric Anderson wrote:
> 
>>John Baldwin wrote:
>>
>>>On Tuesday 02 August 2005 04:57 pm, Eric Anderson wrote:
>>>
>>>>John Baldwin wrote:
>>>>
>>>>>On Tuesday 02 August 2005 04:28 pm, Eric Anderson wrote:
>>>>>
>>>>>>Ok, here's a small list of issues pending that I can see on -current
>>>>>>(and I saw these on 6- branch too before 7.0).
>>>>>>
>>>>>>- Time ticks along correctly, but anything using an interval will be 2x
>>>>>>off.  For instance - ping will only send a ping every 2 seconds instead
>>>>>>of every second.  systat -vmstat 1 refreshes every 2 seconds, etc.
>>>>>>Disabling APIC 'fixes' it.
>>>>>
>>>>>Are you using the i8254 timecounter or some other timecounter?
>>>>
>>>>kern.timecounter.choice: TSC(800) ACPI-fast(1000) i8254(0)
>>>>dummy(-1000000) kern.timecounter.hardware: ACPI-fast
>>>>
>>>>Which is the default (I'm not forcing anything anywhere).  I believe at
>>>>one time I tried i8254, but it made no difference.  I can try it again
>>>>if you think it's a worthy experiment.
>>>
>>>I would try both i8254 and TSC and see if it makes a difference.
>>
>>Can I do this via sysctl, or do I need to rebuild my kernel?
> 
> 
> sysctl.  Just write the name of the new one to kern.timecounter.hardware
> 

I've done that, with no effect.  I've tried this same hard drive in a 
different laptop, and it works ok, so it's something with the way it 
detects the hardware I suppose.  The laptops are very different.  Both 
are using ACPI-fast.

Eric




-- 
------------------------------------------------------------------------
Eric Anderson        Sr. Systems Administrator        Centaur Technology
Anything that works is better than anything that doesn't.
------------------------------------------------------------------------


More information about the freebsd-current mailing list