From owner-freebsd-smp@FreeBSD.ORG Wed Nov 19 12:05:11 2008 Return-Path: Delivered-To: freebsd-smp@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 83ECE106567C for ; Wed, 19 Nov 2008 12:05:11 +0000 (UTC) (envelope-from freebsd-smp@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id 043238FC18 for ; Wed, 19 Nov 2008 12:05:10 +0000 (UTC) (envelope-from freebsd-smp@m.gmane.org) Received: from root by ciao.gmane.org with local (Exim 4.43) id 1L2lnr-0005ay-4g for freebsd-smp@freebsd.org; Wed, 19 Nov 2008 12:05:04 +0000 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 19 Nov 2008 12:05:03 +0000 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 19 Nov 2008 12:05:03 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-smp@freebsd.org From: Ivan Voras Date: Wed, 19 Nov 2008 12:58:54 +0100 Lines: 92 Message-ID: <4923FF7E.1080101@freebsd.org> References: <200811191144.mAJBi3Lg004559@sana.init-main.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigCFC1809BFB1D0993DBF70FC6" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 2.0.0.17 (X11/20080925) In-Reply-To: <200811191144.mAJBi3Lg004559@sana.init-main.com> X-Enigmail-Version: 0.95.0 Sender: news Cc: freebsd-hackers@freebsd.org, freebsd-current@freebsd.org, freebsd-smp@freebsd.org Subject: Re: Core i7 anyone else? X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD SMP implementation group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Nov 2008 12:05:11 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigCFC1809BFB1D0993DBF70FC6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Takanori Watanabe wrote: > Hi, I recently bought Core i7 machine(for 145,000JPY: about $1500) > and sometimes hangs up oddly. > When in the state, some specific process only works and=20 > replys ping, but not reply any useful information. >=20 > I suspect it may caused by CPU power management, so I cut=20 > almost all CPU power management feature on BIOS parameter. >=20 > Are there any people encouterd such trouble? > And on this machine build world in SCHED_ULE(15min.) is slower=20 > than SCHED_4BSD(12min.). I don't know but this: > =3D=3D=3Ddmesg=3D=3D=3D > http://www.init-main.com/corei7.dmesg > or > http://pastebin.com/m187f77aa > (if host is down) CPU: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz (2684.00-MHz 686-class CPU) Origin =3D "GenuineIntel" Id =3D 0x106a4 Stepping =3D 4 Features=3D0xbfebfbff Features2=3D0x98e3bd AMD Features=3D0x28100000 AMD Features2=3D0x1 Cores per package: 8 Logical CPUs per core: 2 real memory =3D 3211264000 (3062 MB) avail memory =3D 3143983104 (2998 MB) ACPI APIC Table: <7522MS A7522100> FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 2 cpu3 (AP): APIC ID: 3 cpu4 (AP): APIC ID: 4 cpu5 (AP): APIC ID: 5 cpu6 (AP): APIC ID: 6 cpu7 (AP): APIC ID: 7 is a bit in conflict with this: > kern.sched.topology_spec: > > 0, 1, 2, 3, 4, 5, 6, 7 > > > =46rom what I know of its architecture i7 has hyperthreading - i.e. the CPU has 4 "real" cores which are hyperthreaded, so you get 8 cores total. It probably also includes a different way of enumerating its topology which might have caused wrong topology detection and your slowdown in buildworld. (the CPU also has L3 cache, but I think it's not looked up in topology detection). I don't know it this particular error could be responsible for your lockups - probably not. The CPU also introduces some big changes in power management (dynamic powerdown of individual cores) which could cause them - but I can't help you there. Are you sure it's not something trivial like overheating? --------------enigCFC1809BFB1D0993DBF70FC6 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJI/9+ldnAQVacBcgRAptBAKCvy5iMZkVJ7f/v/8jWVRvs0Oa1vwCgnlPY fl3ySAZXU5NXl0ZmOXf43t4= =hTDW -----END PGP SIGNATURE----- --------------enigCFC1809BFB1D0993DBF70FC6--