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Kernel message "Losing too many ticks!"

This document (3398283) is provided subject to the disclaimer at the end of this document.

Environment

Novell SUSE Linux Enterprise Server 9 SP3

Situation

In the boot log you see the following message:

Losing too many ticks!
TSC cannot be used as a timesource.
Possible reasons for this are:
You're running with Speedstep,
You don't have DMA enabled for your hard disk (see hdparm),
Incorrect TSC synchronization on an SMP system (see dmesg).

Resolution

However this message is nothing to worry about. Usually using the following parameter should help:

clock=pit

In certain cases that doesn't help. If the system has HPET enabled the following may work:

clock=hpet

Please note that specifying this parameter when HPET is not enabled will break them. So use this parameter with care.

In any case it is not recommended to use any of these parameters because they make the timing slow.

The kernel message can have different reasons. In this case the boot parameters are mainly a work around for unexpected BIOS behavior. It is also recommended to check if there is a newer BIOS version available.

Disclaimer

This Support Knowledgebase provides a valuable tool for NetIQ/Novell/SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:3398283
  • Creation Date:05-FEB-07
  • Modified Date:27-APR-12
    • SUSESUSE Linux Enterprise Server

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