From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20021003 Description of problem: In RH 9.0 kupdated takes 100% CPU time even without any load on the system. This is RH9 upgraded from 8.0 Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1.just boot and do top 2. 3. Additional info: Some googling suggests something wrong with the IDE driver. THis is on a ibm t21 laptop with a pretty regular IDE drive. I was not able to figure it out yet.
T21 is standard PIIX4 IDE, its as generic as it gets so I find that unlikely. Please give specific details on why you think that.
This bug does not seem to involve an unsupported IDE chipset reported in older newsgroup messages, as hdparm -t /dev/hda returns normal values. Quick fix: Go back to older kernel rpm -ivh --oldpackage kernel-2.4.18-27.8.0.i686.rpm
More info: - nothing on this in /var/log/messages - hda uses DMA mode Things that did not help: - removing CDROM drive - rmmod lvm-mod - /etc/rc.d/init.d/noflushd stop (This is a program to disable frequent flushes on laptops) /dev/hda: Model=IBM-DJSA-232, FwRev=JS8IAD2A, SerialNo=48YBWLG7103 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/15/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=DualPortCache, BuffSize=1874kB, MaxMultSect=16, MultSect=16 CurCHS=16383/15/63, CurSects=15481935, LBA=yes, LBAsects=62506080 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 *udma2 udma3 udma4 AdvancedPM=yes: mode=0x9F (159) WriteCache=enabled Drive conforms to: ATA/ATAPI-5 T13 1321D revision 1: 2 3 4 5 lspci 00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03) 00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03) 00:02.0 CardBus bridge: Texas Instruments PCI1450 (rev 03) 00:02.1 CardBus bridge: Texas Instruments PCI1450 (rev 03) 00:03.0 Ethernet controller: 3Com Corporation 3c556B Hurricane CardBus (rev 20) 00:03.1 Communication controller: 3Com Corporation Mini PCI 56k Winmodem (rev 20) 00:05.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24 [CrystalClear SoundFusion Audio Accelerator] (rev 01) 00:07.0 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02) 00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01) 00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01) 00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 03) 01:00.0 VGA compatible controller: S3 Inc. 86C270-294 Savage/IX-MV (rev 13)
After some more changes and reboot, the behaviour is now normal. I'm not sure what did the trick: - removed 'powertweak' from system - removed oprofile package - removed 'noflushd' from system