Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 29 Dec 2001 19:55:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 29 Dec 2001 19:55:33 -0500 Received: from c007-h015.c007.snv.cp.net ([209.228.33.222]:1988 "HELO c007.snv.cp.net") by vger.kernel.org with SMTP id ; Sat, 29 Dec 2001 19:55:22 -0500 X-Sent: 30 Dec 2001 00:55:15 GMT Message-ID: <3C2E65F3.D54E8048@bigfoot.com> Date: Sat, 29 Dec 2001 16:55:15 -0800 From: Tim Moore Organization: Yoyodyne Propulsion Systems, Inc. X-Mailer: Mozilla 4.78 [en] (X11; U; Linux 2.2.20i i686) X-Accept-Language: en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: 2.2.20 - laptop losing 4 seconds every 17 minutes ?? Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Toshiba 320CT, 2.2.20. I noticed a 'synchronization lost' pattern in xntpd logs. Ran a test loop with 'ntpdate -q' to my LAN time server at 1 second intervals and discovered the laptop is losing precisely 4 seconds (jump) every 17 minutes. There are no unusual cron jobs, nor does any obvious process trigger as far as top output shows. There is an Abit KA7 using the same kernel, ntp server and client setup, and on the same LAN with no issues. Where else can I look? Rgds, tim. [tim@lap ~]# cat /proc/cmdline auto BOOT_IMAGE=linux ro root=302 linear apm=off ['ntpdate -q' @ 1 second interval, xntpd not running] ... 29 Dec 11:56:52 ntpdate[2780]: adjust time server 192.168.1.11 offset 0.002125 sec server 192.168.1.11, stratum 3, offset 3.992613, delay 0.02609 29 Dec 11:56:53 ntpdate[2782]: step time server 192.168.1.11 offset 3.992613 sec server 192.168.1.11, stratum 3, offset 3.992623, delay 0.02609 ... 29 Dec 12:13:52 ntpdate[4599]: step time server 192.168.1.11 offset 4.003295 sec server 192.168.1.11, stratum 3, offset 7.993790, delay 0.02608 29 Dec 12:13:53 ntpdate[4601]: step time server 192.168.1.11 offset 7.993790 sec server 192.168.1.11, stratum 3, offset 7.993804, delay 0.02609 ... 29 Dec 12:30:52 ntpdate[6409]: step time server 192.168.1.11 offset 8.004875 sec server 192.168.1.11, stratum 3, offset 11.995373, delay 0.02609 29 Dec 12:30:53 ntpdate[6411]: step time server 192.168.1.11 offset 11.995373 sec server 192.168.1.11, stratum 3, offset 11.995386, delay 0.02609 ... 29 Dec 12:47:52 ntpdate[8220]: step time server 192.168.1.11 offset 12.006176 sec server 192.168.1.11, stratum 3, offset 15.996671, delay 0.02608 29 Dec 12:47:53 ntpdate[8222]: step time server 192.168.1.11 offset 15.996671 sec server 192.168.1.11, stratum 3, offset 15.996680, delay 0.02609 ... Dec 29 14:36:43 lap xntpd: xntpd startup succeeded Dec 29 14:36:44 lap xntpd[806]: xntpd 3-5.93e Fri Apr 6 13:16:48 EDT 2001 (1) Dec 29 14:36:44 lap xntpd[806]: tickadj = 5, tick = 10001, tvu_maxslew = 490, est. hz = 99 Dec 29 14:36:44 lap xntpd[806]: precision = 15 usec Dec 29 14:36:44 lap xntpd[806]: read drift of 0 from /etc/ntp/drift Dec 29 14:41:01 lap xntpd[806]: synchronized to 192.168.1.11, stratum=3 Dec 29 14:41:01 lap xntpd[806]: time reset (step) 4.005706 s Dec 29 14:41:01 lap xntpd[806]: synchronisation lost Dec 29 14:45:18 lap xntpd[806]: synchronized to LOCAL(0), stratum=10 Dec 29 14:46:21 lap xntpd[806]: synchronized to 192.168.1.11, stratum=3 Dec 29 14:46:21 lap xntpd[806]: kernel pll status change 89 Dec 29 14:53:53 lap xntpd[806]: synchronisation lost Dec 29 14:53:54 lap xntpd[806]: synchronized to LOCAL(0), stratum=10 Dec 29 14:55:48 lap xntpd[806]: synchronized to 192.168.1.11, stratum=3 Dec 29 15:10:32 lap xntpd[806]: synchronisation lost ... Linux version 2.2.20i (root@lap) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 rele ase)) #11 Fri Dec 28 13:03:21 PST 2001 BIOS-provided physical RAM map: BIOS-e820: 0009f000 @ 00000000 (usable) BIOS-e820: 03f10000 @ 00100000 (usable) BIOS-e820: 00010000 @ 04010000 (usable) Detected 266622 kHz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 530.84 BogoMIPS Memory: 63172k/65664k available (1044k kernel code, 412k reserved, 988k data, 48k init) Dentry hash table entries: 16384 (order 5, 128k) Buffer cache hash table entries: 65536 (order 6, 256k) Page cache hash table entries: 16384 (order 4, 64k) CPU: Intel Mobile Pentium MMX stepping 01 Checking 386/387 coupling... OK, FPU using exception 16 error reporting. Checking 'hlt' instruction... OK. Intel Pentium with F0 0F bug - workaround enabled. POSIX conformance testing by UNIFIX PCI: PCI BIOS revision 2.10 entry at 0xfd557 PCI: Using configuration type 1 PCI: Probing PCI hardware Linux NET4.0 for Linux 2.2 Based upon Swansea University Computer Society NET3.039 NET4: Unix domain sockets 1.0 for Linux NET4.0. NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP TCP: Hash tables configured (ehash 65536 bhash 65536) Starting kswapd v 1.5 parport0: PC-style at 0x3bc (0x7bc) [SPP,ECP,ECPPS2] parport0: detected irq 7; use procfs to enable interrupt-driven operation. Detected PS/2 Mouse Port. Serial driver version 4.27 with no serial options enabled ttyS00 at 0x03f8 (irq = 4) is a 16550A ttyS01 at 0x02f8 (irq = 3) is a 8250 Toshiba System Managment Mode driver v1.9 22/3/2001 Sound initialization started Found OPL3-SAx (YMF719) at 0x534 irq 9 dma 0,1 ad1848: Interrupt test failed (IRQ9) at 0x330 irq 9 dma 0 Sound initialization complete loop: registered device at major 7 Uniform Multi-Platform E-IDE driver Revision: 6.30 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx hda: IBM-DTCA-24090, ATA DISK drive hdc: TOSHIBA CD-ROM XM-1602B, ATAPI CDROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 hda: IBM-DTCA-24090, 3909MB w/468kB Cache, CHS=993/128/63 ppa: Version 2.07 (for Linux 2.2.x) WARNING - no ppa compatible devices found. As of 31/Aug/1998 Iomega started shipping parallel port ZIP drives with a different interface which is supported by the imm (ZIP Plus) driver. If the cable is marked with "AutoDetect", this is what has happened. scsi : 0 hosts. scsi : detected total. Partition check: hda: hda1 hda2 hda3 hda4 < hda5 hda6 > apm: BIOS version 1.2 Flags 0x02 (Driver version 1.13) apm: disabled on user request. VFS: Mounted root (ext2 filesystem) readonly. Freeing unused kernel memory: 48k freed Adding Swap: 258040k swap-space (priority -1) Linux PCMCIA Card Services 3.1.30 kernel build: 2.2.20i #4 Thu Dec 13 21:36:36 PST 2001 options: [pci] [apm] PCI routing table version 1.0 at 0xf8e80 Intel ISA/PCI/CardBus PCIC probe: Intel i82365sl B step rev 00 ISA-to-PCMCIA at port 0x3e0 ofs 0x00 host opts [0]: none host opts [1]: none ISA irqs (scanned) = 3,4,5,7,10,12 status change on irq 10 cs: memory probe 0x0d0000-0x0dffff: clean. xirc2ps_cs.c 1.31 1998/12/09 19:32:55 (dd9jn+kvh) cs: IO port probe 0x0100-0x04ff: excluding 0x220-0x22f 0x340-0x347 0x388-0x38f 0x3b8-0x3e7 0x480-0x48f 0x4d0-0x4d7 cs: IO port probe 0x0230-0x033f: clean. cs: IO port probe 0x0348-0x0387: clean. cs: IO port probe 0x0390-0x03b7: clean. cs: IO port probe 0x03e8-0x047f: clean. cs: IO port probe 0x0490-0x04cf: clean. cs: IO port probe 0x04d8-0x04ff: clean. cs: IO port probe 0x0800-0x08ff: clean. cs: IO port probe 0x0a00-0x0aff: clean. cs: IO port probe 0x0c00-0x0cff: excluding 0xcf8-0xcff eth0: Xircom: port 0x300, irq 3, hwaddr 00:80:C7:75:B4:A3 eth0: MII link partner: 41e1 eth0: MII selected eth0: media 100BaseT, silicon revision 4 -- - 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/