[ut2004] kernel tickrate (Hz) and server tickrate

rob larkin manifold at manifoldone.com
Tue Jan 17 22:59:32 EST 2006


Bill Fraser wrote:

>On 1/17/06, rob larkin <manifold at manifoldone.com> wrote:
>  
>
>>Thetargos Fal wrote:
>>
>>    
>>
>>>Apparently people with recent kernel builds have been benefitting from a
>>>higher kernel-side tickrate than the stock 250 Hz (as of 2.6.13 and up)
>>>on game servers. How do these two items relate and how beneficial (to
>>>the server) it would be to have high system tickrate and low-latency
>>>voluntary kernel-preemption enabled? What bout higher server tickrates?
>>>      
>>>
>>I thought the default timer frequency was 1000 Hz until the option was
>>introduced.
>>
>>Rob
>>
>>    
>>
>
>Prior to 2.5.26, Linux on x86 hardware used 100 as the HZ value.
>
>- Bill
>  
>
Right but isn't it 1000 in 2.6 up through 2.6.13?  I remember reading 
that some people with bad/cheap capacitors had to hack source to change 
the hz value to stop a high frequency whine; then it was made a config 
option.

Rob



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