netdev - Re: HTB accuracy for high speed

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Date:	Mon, 18 May 2009 19:03:55 +0100
From:	Antonio Almeida <vexwek@...il.com>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	netdev@...r.kernel.org, jarkao2@...il.com, kaber@...sh.net,
	davem@...emloft.net, devik@....cz
Subject: Re: HTB accuracy for high speed

I have my kernel's timer frequency set to 1000Hz since the beginning.
I've got all these results with HZ_1000.

(I'm working on clocksource)

Thanks
  Antonio Almeida


On Mon, May 18, 2009 at 5:13 PM, Stephen Hemminger
<shemminger@...tta.com> wrote:
> On Mon, 18 May 2009 11:01:21 +0100
> Antonio Almeida <vexwek@...il.com> wrote:
>
>> Hi!
>>
>> cat /sys/devices/system/clocksource/clocksource0/current_clocksource
>> returns "jiffies"
>
> That is the slowest of the choices. Better ones are hpet and tsc, but you
> hardware doesn't support them.
>
> You should compile your kernel with HZ=1000 and the resolution will be better
> (but with some loss of performance).
>
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