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Date: Sun, 17 Apr 2011 19:12:45 +0200 From: Maciej Rutecki <maciej.rutecki@...il.com> To: Tim Shepard <shep@...m.mit.edu> Cc: linux-kernel@...r.kernel.org Subject: Re: 2.6.39-rc3 udevadm settle timeout, many hdb events, interrupt storm I created a Bugzilla entry at https://bugzilla.kernel.org/show_bug.cgi?id=33412 for your bug report, please add your address to the CC list in there, thanks! On wtorek, 12 kwietnia 2011 o 21:14:35 Tim Shepard wrote: > 2.6.38 is working fine on my PowerBook G4 (powerpc) and has none of > the issues described below. > > Last week I tried 2.6.39-rc2 and it hung on reboot. > Same thing with 2.6.39-rc3 this week. > > I've tracked this down to the "udevadm settle" in /etc/init.d/udev > (from Debian squeeze). > > If I am patient it does timeout after 180 seconds and continues > booting. But after booting finishes udev is still chewing CPU cycles > and load average is stuck at 1. > > After the system is up: > > # udevadm monitor > monitor will print the received events for: > UDEV - the event which udev sends out after rule processing > KERNEL - the kernel uevent > > KERNEL[1302632376.412055] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.460742] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632376.501101] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.510745] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.560742] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632376.601155] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.610755] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.660744] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632376.701186] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.710751] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.760727] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632376.801135] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.810753] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.860748] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632376.901068] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.910748] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632376.960746] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632377.004023] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.010786] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.210681] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.260749] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632377.301096] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.310749] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.360749] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632377.401136] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.410753] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.460748] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632377.501264] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.510749] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.560730] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) UDEV > [1302632377.601147] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) > KERNEL[1302632377.610793] change > /devices/pci0002:24/0002:24:0d.0/ide0/0.1/block/hdb (block) ^C# > # > # > # dmesg | grep hdb > hdb: MATSHITADVD-R UJ-846, ATAPI CD/DVD-ROM drive > hdb: host max PIO4 wanted PIO255(auto-tune) selected PIO4 > hdb: UDMA/66 mode selected > ide-cd: hdb: ATAPI 24X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache > # > # dmesg | grep ide > radeonfb: Using Firmware dividers 0x00040089 from PPLL 0 > ide-pmac 0002:24:0d.0: enabling device (0000 -> 0002) > ide-pmac: Found Apple UniNorth ATA-6 controller (PCI), bus ID 3, irq 39 > Probing IDE interface ide0... > ide0 at 0xf106a000-0xf106a070,0xf106a160 on irq 39 > ide-gd driver 1.18 > ide-cd driver 5.00 > ide-cd: hdb: ATAPI 24X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache > # > > > I am getting over 1300 interrupts per second for ide0: > > # while grep ide /proc/interrupts && sleep 1 ; do : ; done > 39: 722724 MPIC 1 ide0 > 39: 723042 MPIC 1 ide0 > 39: 723364 MPIC 1 ide0 > 39: 723685 MPIC 1 ide0 > 39: 724012 MPIC 1 ide0 > 39: 724334 MPIC 1 ide0 > 39: 724656 MPIC 1 ide0 > 39: 724978 MPIC 1 ide0 > 39: 725296 MPIC 1 ide0 > 39: 725615 MPIC 1 ide0 > 39: 725936 MPIC 1 ide0 > 39: 726257 MPIC 1 ide0 > 39: 726577 MPIC 1 ide0 > 39: 726901 MPIC 1 ide0 > 39: 727226 MPIC 1 ide0 > 39: 727549 MPIC 1 ide0 > 39: 727868 MPIC 1 ide0 > 39: 728190 MPIC 1 ide0 > 39: 728512 MPIC 1 ide0 > 39: 728833 MPIC 1 ide0 > 39: 729152 MPIC 1 ide0 > 39: 729473 MPIC 1 ide0 > 39: 729800 MPIC 1 ide0 > 39: 730111 MPIC 1 ide0 > 39: 730435 MPIC 1 ide0 > 39: 730755 MPIC 1 ide0 > 39: 731083 MPIC 1 ide0 > 39: 731402 MPIC 1 ide0 > 39: 731720 MPIC 1 ide0 > 39: 732052 MPIC 1 ide0 > 39: 732368 MPIC 1 ide0 > 39: 732689 MPIC 1 ide0 > 39: 733010 MPIC 1 ide0 > ^C > > > > I tried using the CDROM drive and it actually does work (as /dev/hdb). > So the only real problems are the 180 second hang while booting and > the interrupt storm and udev event storm that continues. > > Any hints? > > > -Tim Shepard > shep@...m.mit.edu > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Maciej Rutecki http://www.maciek.unixy.pl -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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