From: Arjan van de Ven <arjanv@redhat.com>
To: Daniele <dandario@libero.it>
Cc: Arjan van de Ven <arjanv@redhat.com>, linux-kernel@vger.kernel.org
Subject: Re: [RFC] HZ entry in /proc/sys/kernel
Date: Tue, 27 May 2003 19:42:46 +0000 [thread overview]
Message-ID: <20030527194246.E32598@devserv.devel.redhat.com> (raw)
In-Reply-To: <20030527193957.GA288@libero.it>; from dandario@libero.it on Tue, May 27, 2003 at 09:39:57PM +0200
On Tue, May 27, 2003 at 09:39:57PM +0200, Daniele wrote:
> On Mon, May 26, 2003 at 02:15:57PM +0200, Arjan van de Ven wrote:
> > On Mon, 2003-05-26 at 13:53, Grzegorz Jaskiewicz wrote:
> > > I have seen few scripts allready that are assuming HZ==100.
> > > Afaik this value is different in 2.5/2.4 for the same arch.
> >
> > No it's not actually.
> > The userspace interface is constant/stable and in units of HZ=100 even
> > though the kernel HZ might be different.
> >
>
> What's this HZ value related to?
the userspace interface is not in units of kernel HZ, but in
"theoretical time units that happen to match a defined
default" which happens to match 10ms on x86.
prev parent reply other threads:[~2003-05-27 19:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-26 11:53 [RFC] HZ entry in /proc/sys/kernel Grzegorz Jaskiewicz
2003-05-26 12:15 ` Arjan van de Ven
2003-05-27 19:39 ` Daniele
2003-05-27 19:42 ` Arjan van de Ven [this message]
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