From: Artur Skawina <art.08.09@gmail.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: akataria@vmware.com, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@elte.hu>,
the arch/x86 maintainers <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: Default HZ value for X86
Date: Thu, 30 Apr 2009 19:27:50 +0200 [thread overview]
Message-ID: <49F9DF96.7090108@gmail.com> (raw)
In-Reply-To: <20090428003454.08d1660c@lxorguk.ukuu.org.uk>
Alan Cox wrote:
> On Mon, 27 Apr 2009 16:07:10 -0700
> Alok Kataria <akataria@vmware.com> wrote:
>>
>> I was wondering why do we still have the default HZ value as 1000 for
>> the x86 kernels.
>>
>> arch/x86/configs/i386_defconfig:CONFIG_HZ=1000
>> arch/x86/configs/x86_64_defconfig:CONFIG_HZ=1000
>>
>> With the highres timer implementation it was planned to move away from
>> relying on high timer interrupt frequency for applications requiring
>> precise high resolution timers.
>
> With the tickless kernel does this really matter any more ? We might as
It didn't matter much, until the kernel stopped actually being tickless.
These days, w/ ints on when nonidle, it probably does again...
> well keep a logical 1000 for convenience and accuracy.
next prev parent reply other threads:[~2009-04-30 17:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-27 23:07 Default HZ value for X86 Alok Kataria
2009-04-27 23:34 ` Alan Cox
2009-04-28 16:55 ` Alok Kataria
2009-04-30 17:27 ` Artur Skawina [this message]
2009-04-30 18:24 ` Alok Kataria
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