Re: [PATCH] ia64: change usermode HZ to 250
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- To: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
- Subject: Re: [PATCH] ia64: change usermode HZ to 250
- From: Jes Sorensen <jes@xxxxxxx>
- Date: 29 Jun 2006 08:56:05 -0400
- Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>, "Luck, Tony" <tony.luck@xxxxxxxxx>, John Daiker <jdaiker@xxxxxxxx>, John Hawkes <hawkes@xxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxx>, linux-ia64@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Jack Steiner <steiner@xxxxxxx>, Dan Higgins <djh@xxxxxxx>, Jeremy Higdon <jeremy@xxxxxxx>
- In-reply-to: <1151578513.3122.22.camel@xxxxxxxxxxxxxxxxxxxxx>
- References: <617E1C2C70743745A92448908E030B2A27FC5F@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <yq04py4i9p7.fsf@xxxxxxxxxxxxxx> <1151578928.23785.0.camel@xxxxxxxxxxxxxxxxxxxxx> <44A3AFFB.2000203@xxxxxxx> <1151578513.3122.22.camel@xxxxxxxxxxxxxxxxxxxxx>
- User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4
>>>>> "Arjan" == Arjan van de Ven <arjan@xxxxxxxxxxxxx> writes:
Arjan> read what Alan said: the HZ exposed to userspace is
Arjan> *constant*. For example, the i386 user visible HZ is 100, even
Arjan> if the kernel runs at a HZ of 250 or 1000.... Just when a HZ
Arjan> value gets exposed to userspace, it's transformed into a HZ=100
Arjan> based value.
Arjan> And that's not a distribution thing, that's the kernel.org
Arjan> kernel honoring the stable-userspace-interface contract, and
Arjan> common sense..
See what you mean, thanks.
Jes
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