I've got two identical Dell PowerEdge 2850s here running FC3 x86_64 that produce time source errors. With the 2.6.10-1.741_FC3smp kernel, these two boxes both say: Losing some ticks... checking if CPU frequency changed. warning: many lost ticks. Your time source seems to be instable or some driver is hogging interupts rip _spin_unlock_irqrestore+0x2d/0x2e Falling back to HPET Modules loaded are: Module Size Used by i2c_dev 13633 0 i2c_core 27201 1 i2c_dev video 20041 0 button 9057 0 battery 12105 0 ac 6729 0 uhci_hcd 35433 0 ehci_hcd 35401 0 hw_random 7137 0 e1000 96021 0 floppy 65425 0 sg 42873 0 dm_snapshot 18561 0 dm_zero 3649 0 dm_mirror 24401 2 ext3 137297 2 jbd 66545 1 ext3 dm_mod 65537 6 dm_snapshot,dm_zero,dm_mirror megaraid_mbox 35409 2 megaraid_mm 13185 1 megaraid_mbox sd_mod 19393 3 scsi_mod 140409 3 sg,megaraid_mbox,sd_mod These machines both have 2 real (4 virtual) 2.8GHz Xeons
Other dual (4 virtual) 2850s here running that same kernel don't show this. The only hardware difference is that the 2 boxes showing this message have a Intel e1000 PCI card added (in addition to the 2 on-board e1000s built in on the 2850s) the onboard are: 06:07.0 Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet Controller (rev 05) 07:08.0 Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet Controller (rev 05) the pci card is: 09:04.0 Ethernet controller: Intel Corp. 82543GC Gigabit Ethernet Controller (Copper) (rev 02) In addition, the 2 boxes showing this message are using LVM, which our other 2850s are not Those are the only hardware / driver differences between the 2 boxes which display this and the multiple ones which don't.
We have the same error messages on our HP Proliant 360 running RHEL4-x86_64. Many thanks.
An update has been released for Fedora Core 3 (kernel-2.6.12-1.1372_FC3) which may contain a fix for your problem. Please update to this new kernel, and report whether or not it fixes your problem. If you have updated to Fedora Core 4 since this bug was opened, and the problem still occurs with the latest updates for that release, please change the version field of this bug to 'fc4'. Thank you.
I can confirm this bug on FC4 and filed a new bug against FC4.
This bug has been automatically closed as part of a mass update. It had been in NEEDINFO state since July 2005. If this bug still exists in current errata kernels, please reopen this bug. There are a large number of inactive bugs in the database, and this is the only way to purge them. Thank you.