Date: Thu, 24 Sep 2009 14:23:10 GMT From: Arkadiy Kulev <eth@ethaniel.com> To: freebsd-gnats-submit@FreeBSD.org Subject: i386/139115: low cpu frequency reported Message-ID: <200909241423.n8OENAen097662@www.freebsd.org> Resent-Message-ID: <200909241430.n8OEU11O015507@freefall.freebsd.org>
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>Number: 139115 >Category: i386 >Synopsis: low cpu frequency reported >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-i386 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Sep 24 14:30:01 UTC 2009 >Closed-Date: >Last-Modified: >Originator: Arkadiy Kulev >Release: 7.2 >Organization: >Environment: FreeBSD w11 7.2-RELEASE FreeBSD 7.2-RELEASE #0: Fri May 1 08:49:13 UTC 2009 root@walker.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386 >Description: I have installed Freebsd 7.2 "out of the box" and noticed, that some of the processes are taking much more time to complete than usual. After investigating the problem, I noticed, that sysctl reports abnormally low cpu frequency: dev.cpu.0.freq_levels: 15/89000 dev.est.0.freq_settings: 15/89000 dev.est.1.freq_settings: 15/89000 dev.est.2.freq_settings: 15/89000 dev.est.3.freq_settings: 15/89000 dev.cpu.0.%desc: ACPI CPU dev.cpu.0.%driver: cpu dev.cpu.0.%location: handle=\_PR_.CPU0 dev.cpu.0.%pnpinfo: _HID=none _UID=0 dev.cpu.0.%parent: acpi0 dev.cpu.0.freq: 15 dev.cpu.0.freq_levels: 15/89000 dev.cpu.0.cx_supported: C1/0 dev.cpu.0.cx_lowest: C1 dev.cpu.0.cx_usage: 100.00% dev.cpu.1.%desc: ACPI CPU dev.cpu.1.%driver: cpu dev.cpu.1.%location: handle=\_PR_.CPU1 dev.cpu.1.%pnpinfo: _HID=none _UID=0 dev.cpu.1.%parent: acpi0 dev.cpu.1.cx_supported: C1/0 dev.cpu.1.cx_lowest: C1 dev.cpu.1.cx_usage: 100.00% dev.cpu.2.%desc: ACPI CPU dev.cpu.2.%driver: cpu dev.cpu.2.%location: handle=\_PR_.CPU2 dev.cpu.2.%pnpinfo: _HID=none _UID=0 dev.cpu.2.%parent: acpi0 dev.cpu.2.cx_supported: C1/0 dev.cpu.2.cx_lowest: C1 dev.cpu.2.cx_usage: 100.00% dev.cpu.3.%desc: ACPI CPU dev.cpu.3.%driver: cpu dev.cpu.3.%location: handle=\_PR_.CPU3 dev.cpu.3.%pnpinfo: _HID=none _UID=0 dev.cpu.3.%parent: acpi0 dev.cpu.3.cx_supported: C1/0 dev.cpu.3.cx_lowest: C1 dev.cpu.3.cx_usage: 100.00% The funny thing is, that I have another machine with the same architecture, still running freebsd 7.0 and it works fine: dev.cpu.0.freq: 2394 dev.est.0.freq_settings: 2394/89000 1596/56960 dev.est.1.freq_settings: 2394/89000 1596/56960 dev.est.2.freq_settings: 2394/89000 1596/56960 dev.est.3.freq_settings: 2394/89000 1596/56960 dev.cpu.0.%desc: ACPI CPU dev.cpu.0.%driver: cpu dev.cpu.0.%location: handle=\_PR_.CPU0 dev.cpu.0.%pnpinfo: _HID=none _UID=0 dev.cpu.0.%parent: acpi0 dev.cpu.0.freq: 2394 dev.cpu.0.freq_levels: 2394/89000 2094/77875 1795/66750 1596/56960 1396/49840 1197/42720 997/35600 798/28480 598/21360 dev.cpu.0.cx_supported: C1/0 dev.cpu.0.cx_lowest: C1 dev.cpu.0.cx_usage: 100.00% dev.cpu.1.%desc: ACPI CPU dev.cpu.1.%driver: cpu dev.cpu.1.%location: handle=\_PR_.CPU1 dev.cpu.1.%pnpinfo: _HID=none _UID=0 dev.cpu.1.%parent: acpi0 dev.cpu.1.cx_supported: C1/0 dev.cpu.1.cx_lowest: C1 dev.cpu.1.cx_usage: 100.00% dev.cpu.2.%desc: ACPI CPU dev.cpu.2.%driver: cpu dev.cpu.2.%location: handle=\_PR_.CPU2 dev.cpu.2.%pnpinfo: _HID=none _UID=0 dev.cpu.2.%parent: acpi0 dev.cpu.2.cx_supported: C1/0 dev.cpu.2.cx_lowest: C1 dev.cpu.2.cx_usage: 100.00% dev.cpu.3.%desc: ACPI CPU dev.cpu.3.%driver: cpu dev.cpu.3.%location: handle=\_PR_.CPU3 dev.cpu.3.%pnpinfo: _HID=none _UID=0 dev.cpu.3.%parent: acpi0 dev.cpu.3.cx_supported: C1/0 dev.cpu.3.cx_lowest: C1 dev.cpu.3.cx_usage: 100.00% I assume, that there is some bug somewhere in freebsd versions >7.0. >How-To-Repeat: Have no idea, the problem appeared right after the upgrade from 7.0 to 7.2 (fresh install). >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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