From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Sat, 25 Jun 2005 13:01:08 +0300 From: Michael Shigorin To: ALT Linux kernel packages development Subject: Re: [d-kernel] HZ=250? Message-ID: <20050625100108.GW24580@osdn.org.ua> Mail-Followup-To: ALT Linux kernel packages development References: <20050612201000.GA7495@basalt.office.altlinux.org> <20050614212050.GB10312@localhost.localdomain> <42AF921F.70506@altlinux.ru> <20050615064627.GY12545@osdn.org.ua> <20050618113126.GA8684@lks.home> <20050622144046.GX24580@osdn.org.ua> <20050622151606.GA14883@localhost.localdomain> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="t/9P7KdyJUlSI5eG" Content-Disposition: inline In-Reply-To: <20050622151606.GA14883@localhost.localdomain> User-Agent: Mutt/1.4.2.1i X-BeenThere: devel-kernel@altlinux.ru X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ALT Linux kernel packages development List-Id: ALT Linux kernel packages development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Jun 2005 10:01:11 -0000 Archived-At: List-Archive: List-Post: --t/9P7KdyJUlSI5eG Content-Type: multipart/mixed; boundary="2eHyhvLBS59HzW9D" Content-Disposition: inline --2eHyhvLBS59HzW9D Content-Type: text/plain; charset=koi8-r Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Jun 22, 2005 at 07:16:27PM +0400, Denis Smirnov wrote: > MS> =F7=CF=D4 =C9 =D1 =D4=C1=CB =C4=D5=CD=C1=C0. =F7=DE=C5=D2=C1 =D3 vs= u@ =CF=C2=D3=D5=C4=C9=CC=C9, =D7=D9=DB=CC=CF =D7=CF=D4 =DE=D4=CF > MS> (=D4=C1=CB=D6=C5 =C5=DD=A3 =C4=D7=C1 =D0=D2=C9=CC=C5=D6=C1=DD=C9=C8 = =C9 =C9=CD=C5=C0=DD=C9=C8 =CF=D4=CE=CF=DB=C5=CE=C9=C5 =CB 2.6.12 > MS> =D7 =D3=D7=C5=D4=C5 2.9.9.9 =D7=CF=D0=D2=CF=D3=C1, =CE=C1=D3=CB=CF= =CC=D8=CB=CF =D0=CF=CE=C9=CD=C1=C0): > =ED=C5=CE=D1 =D4=CF=CC=D8=CB=CF =D0=CE=C9=D4=C5 =C2=CF=CC=D8=CE=CF, =DE= =D4=CF=C2=D9 zaptel =D0=D2=CF=D7=C5=D2=C9=CC. =E4=C5=D2=D6=C9 src.rpm. =E4=CC=D1 =D5=C4=CF=C2=D3=D4=D7=C1 -- =D7=CF=D4 = =C9 =CF=D0=C9=D3=C1=CE=C9=C5: --- List: linux-kernel Subject: [RFC][PATCH][2.6] CONFIG_HZ for x86 From: Mikael Pettersson Date: 2003-11-02 15:36:22 [Download message RAW ]* This patch adds a CONFIG_HZ option to x86, allowing the kernel- internal HZ to be reduced from 1000 to 512 or 100. This solves lost timer interrupt problems on really old machines like my 486. According to Alan Cox, HZ=3D=3D1000 is also harmful on some laptops (presumably due to long SMI windows), so this patch should be useful for those too. Selecting a lower HZ may also help thermal efficiency slightly, by allowing machines to idle longer between timer interrupts. HZ=3D=3D100 also reduces the size of the kernel, since it eliminates a lot of HZ<-->USER_HZ conversions. = =20 HZ=3D=3D512 may or may not be useful, but it does work. Why 512 and not 500? 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