* Kernel 2.6.13-rc7 Latency Question
@ 2005-08-27 9:26 Justin Piszcz
2005-08-27 10:07 ` Michal Piotrowski
0 siblings, 1 reply; 2+ messages in thread
From: Justin Piszcz @ 2005-08-27 9:26 UTC (permalink / raw)
To: linux-kernel
These options are self-explanatory:
x x ( ) No Forced Preemption (Server) x
x x x ( ) Voluntary Kernel Preemption (Desktop) x
x x x (X) Preemptible Kernel (Low-Latency Desktop) x x
It says 100 HZ or 250 HZ is good for SMP systems; however, what if I am
using a P4 machine with 1 CPU (HT), is 1000HZ still the way to go, as its
not really 2 *REAL* cpus?
lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk x
x x ( ) 100 HZ
x x x ( ) 250 HZ
x x x (X) 1000 HZ
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Kernel 2.6.13-rc7 Latency Question
2005-08-27 9:26 Kernel 2.6.13-rc7 Latency Question Justin Piszcz
@ 2005-08-27 10:07 ` Michal Piotrowski
0 siblings, 0 replies; 2+ messages in thread
From: Michal Piotrowski @ 2005-08-27 10:07 UTC (permalink / raw)
To: Justin Piszcz; +Cc: LKML
Hi,
On 8/27/05, Justin Piszcz <jpiszcz@lucidpixels.com> wrote:
>
> These options are self-explanatory:
>
> x x ( ) No Forced Preemption (Server) x
> x x x ( ) Voluntary Kernel Preemption (Desktop) x
> x x x (X) Preemptible Kernel (Low-Latency Desktop) x x
>
>
>
> It says 100 HZ or 250 HZ is good for SMP systems; however, what if I am
> using a P4 machine with 1 CPU (HT), is 1000HZ still the way to go, as its
> not really 2 *REAL* cpus?
I use 1000HZ on my P4 machine, HT enabled, staircase scheduler.
See LKML topic "Schedulers benchmark" if you want more
information/benchmarks results.
Regards,
Michal Piotrowski
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