Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262720AbUCWRXh (ORCPT ); Tue, 23 Mar 2004 12:23:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262730AbUCWRXg (ORCPT ); Tue, 23 Mar 2004 12:23:36 -0500 Received: from mail3.absamail.co.za ([196.35.40.69]:18734 "EHLO absamail.co.za") by vger.kernel.org with ESMTP id S262720AbUCWRXZ (ORCPT ); Tue, 23 Mar 2004 12:23:25 -0500 Subject: [Problem 2.6.4] Process table time incorrect after ACPI/APM resume From: Niel Lambrechts To: linux-kernel@vger.kernel.org Content-Type: text/plain Message-Id: <1080062537.6802.9.camel@localhost> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 Date: Tue, 23 Mar 2004 19:22:17 +0200 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2605 Lines: 90 System: SuSE 9.0 pro. Linux 2.6.4 #1 Fri Mar 12 01:01:06 SAST 2004 i686 i686 i386 GNU/Linux. IBM Thinkpad R50P, Intel 82855PM, Centrino 1.7 GHz. Problem: After ACPI/APM suspend-to-ram, process table times are wrong. Symptoms: After 1st resume, process table times were about 5 seconds slower than the actual system time. I initially noticed this using ACPI, but can confirm that the same happens under APM! After repeating the suspend/resume thing: ksyrium:~ # ps -ef|grep nothing root 2288 1550 0 12:24 pts/34 00:00:00 grep nothing ksyrium:~ # date Thu Mar 18 12:26:41 SAST 2004 ksyrium:~ # ps -ef|grep nothing root 2291 1550 0 12:24 pts/34 00:00:00 grep nothing ksyrium:~ # date Thu Mar 18 12:26:50 SAST 2004 ksyrium:~ # ps -ef|grep nothing root 2294 1550 0 12:24 pts/34 00:00:00 grep nothing ksyrium:~ # date Thu Mar 18 12:26:53 SAST 2004 ksyrium:~ # ps -ef|grep nothing root 2350 1550 0 12:31 pts/34 00:00:00 grep nothing ksyrium:~ # date Thu Mar 18 12:33:50 SAST 2004 The process table times are slowed significantly, but not to a complete standstill afer resuming under BOTH power management systems. Surely this is not correct/sane? I couldn't find any more info at the usual places googling/bugzilla. Niel Relevant options: CONFIG_X86_TSC=y CONFIG_HPET_TIMER=y CONFIG_HPET_EMULATE_RTC=y # CONFIG_X86_PM_TIMER is not set # CONFIG_HANGCHECK_TIMER is not set CONFIG_SND_RTCTIMER=m # Power management options (ACPI, APM) # APM (Advanced Power Management) BIOS Support CONFIG_APM=y # CONFIG_APM_IGNORE_USER_SUSPEND is not set CONFIG_APM_DO_ENABLE=y CONFIG_APM_CPU_IDLE=y CONFIG_APM_DISPLAY_BLANK=y CONFIG_APM_RTC_IS_GMT=y CONFIG_APM_ALLOW_INTS=y # CONFIG_APM_REAL_MODE_POWER_OFF is not set # Power management options (ACPI, APM) # ACPI (Advanced Configuration and Power Interface) Support CONFIG_ACPI=y CONFIG_ACPI_BOOT=y CONFIG_ACPI_INTERPRETER=y CONFIG_ACPI_SLEEP=y CONFIG_ACPI_SLEEP_PROC_FS=y CONFIG_ACPI_AC=m CONFIG_ACPI_BATTERY=m CONFIG_ACPI_BUTTON=m CONFIG_ACPI_FAN=m CONFIG_ACPI_PROCESSOR=m CONFIG_ACPI_THERMAL=m CONFIG_ACPI_ASUS=m CONFIG_ACPI_TOSHIBA=m CONFIG_ACPI_DEBUG=y CONFIG_ACPI_BUS=y CONFIG_ACPI_EC=y CONFIG_ACPI_POWER=y CONFIG_ACPI_PCI=y CONFIG_ACPI_SYSTEM=y CONFIG_X86_ACPI_CPUFREQ=m # CONFIG_X86_ACPI_CPUFREQ_PROC_INTF is not set CONFIG_HOTPLUG_PCI_ACPI=m # CONFIG_SERIAL_8250_ACPI is not set - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/