From owner-freebsd-smp Mon Mar 30 12:46:40 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id MAA17752 for freebsd-smp-outgoing; Mon, 30 Mar 1998 12:46:40 -0800 (PST) (envelope-from owner-freebsd-smp@FreeBSD.ORG) Received: from yalta.NL.net (yalta.NL.net [193.78.240.21]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA17641 for ; Mon, 30 Mar 1998 12:46:14 -0800 (PST) (envelope-from benst@terminus.stuyts.nl) Received: from alushta.NL.net ([193.78.240.22]:36365 "EHLO alushta.NL.net" ident: "IDENT-NOT-QUERIED") by yalta.NL.net with ESMTP id <25152-19494>; Mon, 30 Mar 1998 22:45:58 +0200 Received: from stuyts by alushta.NL.net with UUCP id <24686-20392>; Mon, 30 Mar 1998 22:44:02 +0200 Received: from daneel.stuyts.nl (daneel.stuyts.nl [193.78.231.7]) by terminus.stuyts.nl (8.8.8/8.8.8) with ESMTP id WAA04707 for ; Mon, 30 Mar 1998 22:42:33 +0200 (MET DST) (envelope-from benst) Received: (from benst@localhost) by daneel.stuyts.nl (8.8.5/8.8.5) id WAA05032 for smp@freebsd.org; Mon, 30 Mar 1998 22:42:32 +0200 (MET DST) Message-Id: <199803302042.WAA05032@daneel.stuyts.nl> Content-Type: text/plain MIME-Version: 1.0 (NeXT Mail 3.3 v118.2) X-Nextstep-Mailer: Mail 3.3 (Enhance 1.2) Received: by NeXT.Mailer (1.118.2) From: Ben Stuyts Date: Mon, 30 Mar 98 22:42:30 +0200 To: smp@FreeBSD.ORG Subject: Log messages from latest SMP kernel Reply-To: ben@stuyts.nl Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Running a kernel from about March 27, I get a lot of log messages like this: > sio2: 3 more interrupt-level buffer overflows (total 69) > forward_hardclock: checkstate 0 > forward_hardclock: checkstate 0 > forward_hardclock: checkstate 0 > forward_hardclock: checkstate 0 > forward_hardclock: checkstate 0 > sio2: 3 more interrupt-level buffer overflows (total 72) > forward_hardclock: checkstate 0 > sio2: 3 more interrupt-level buffer overflows (total 75) > forward_hardclock: checkstate 0 > forward_hardclock: checkstate 0 > forward_hardclock: checkstate 0 > forward_hardclock: checkstate 0 > forward_hardclock: checkstate 0 > forward_hardclock: checkstate 0 An older kernel (from before the fs trouble earlier this month) didn't have this behavior. Especially the sio overflows worry me. Has the interrupt latency gone up lately? sio2 is a 230 kb line to a 64 kb ISDN modem. Here is the output of dmesg: Copyright (c) 1992-1998 FreeBSD Inc. Copyright (c) 1982, 1986, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. FreeBSD 3.0-CURRENT #0: Fri Mar 27 01:16:00 MET 1998 benst@terminus.stuyts.nl:/usr/source/src/sys/compile/TERMINUS-SMP Timecounter "i8254" frequency 1193182 Hz cost 2527 ns CPU: Pentium (586-class CPU) Origin = "GenuineIntel" Id = 0x543 Stepping=3 Features=0x8003bf real memory = 67108864 (65536K bytes) avail memory = 62681088 (61212K bytes) FreeBSD/SMP: Multiprocessor motherboard cpu0 (BSP): apic id: 0, version: 0x00030010, at 0xfee00000 cpu1 (AP): apic id: 1, version: 0x00030010, at 0xfee00000 io0 (APIC): apic id: 2, version: 0x00170011, at 0xfec00000 Probing for devices on PCI bus 0: chip0: rev 0x03 on pci0.0.0 chip1: rev 0x01 on pci0.7.0 ide_pci0: rev 0x00 on pci0.7.1 de0: rev 0x11 int a irq 17 on pci0.9.0 de0: SMC 21041 [10Mb/s] pass 1.1 de0: address 00:00:c0:1f:54:e8 vga0: rev 0x02 int a irq 18 on pci0.10.0 ahc0: rev 0x00 int a irq 19 on pci0.12.0 ahc0: Using left over BIOS settings ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs ahc0: waiting for scsi devices to settle scbus0 at ahc0 bus 0 ahc0: target 1 Tagged Queuing Device sd0 at scbus0 target 1 lun 0 sd0: type 0 fixed SCSI 2 sd0: Direct-Access 4134MB (8467200 512 byte sectors) sd0: with 8205 cyls, 6 heads, and an average 171 sectors/track sd1 at scbus0 target 3 lun 0 sd1: type 0 fixed SCSI 2 sd1: Direct-Access 810MB (1660299 512 byte sectors) sd1: with 3653 cyls, 4 heads, and an average 113 sectors/track cd0 at scbus0 target 4 lun 0 cd0: type 5 removable SCSI 2 cd0: CD-ROM can't get the size worm0 at scbus0 target 5 lun 0 worm0: type 5 removable SCSI 2 worm0: Write-Once Probing for PnP devices: CSN 1 Vendor ID: CTL0039 [0x39008c0e] Serial 0x00020ddb Probing for devices on the ISA bus: sc0 at 0x60-0x6f irq 1 on motherboard sc0: VGA color <16 virtual consoles, flags=0x0> sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa sio0: type 16550A sio1 at 0x2f8-0x2ff irq 3 on isa sio1: type 16550A sio2 at 0x3e8-0x3ef irq 10 on isa sio2: type 16550A sio3 at 0x2e8-0x2ef irq 9 on isa sio3: type 16550A lpt0 at 0x378-0x37f irq 7 on isa lpt0: Interrupt-driven port lp0: TCP/IP capable interface psm0 at 0x60-0x64 irq 12 on motherboard psm0: model Generic PS/2 mouse, device ID 0 fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa fdc0: FIFO enabled, 8 bytes threshold fd0: 1.44MB 3.5in wdc0 at 0x1f0-0x1f7 irq 14 on isa wdc0: unit 0 (wd0): wd0: 2014MB (4124736 sectors), 4092 cyls, 16 heads, 63 S/T, 512 B/S npx0 on motherboard npx0: INT 16 interface sb0 at 0x220 irq 5 drq 1 on isa snd0: sbxvi0 at ? drq 5 on isa snd0: sbmidi0 at 0x330 on isa snd0: opl0 at 0x388 on isa snd0: Intel Pentium F00F detected, installing workaround APIC_IO: Testing 8254 interrupt delivery APIC_IO: routing 8254 via pin 2 SMP: AP CPU #1 Launched! WARNING: / was not properly dismounted. Start pid=2 Start pid=3 Start pid=4 de0: enabling BNC port sio3: 64 events for device with no tp sio2: 2 more interrupt-level buffer overflows (total 2) forward_hardclock: checkstate 0 forward_hardclock: checkstate 0 This is a Gigabyte 586DX board with dual P166 MMX. Kind regards, Ben To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message