Re: Trouble with clock
- From: tonza <netspace.net.au!tonza>
- Date: Thu, 21 Sep 2006 00:32:59 +1000
On 2006-09-07 06:29:31 +1000, historystamp@xxxxxxxxx said:
I am running Ubuntu 6.0.1 in my VPC 6.1. I my boot log (dmesg) is
filled with the messages:
Losing some ticks... checking if cpu frequency changed.
Any way of getting rid of this message?
Maybe this is an Ubuntu issue but I am not sure.
Robert
No, this is not to do with (Ubuntu) Linux... but rather, the fact
that you're running the Linux kernel in an environment where its
execution is subjected to various latencies induced by the virtual
machine.
If you had a hardware fault on a real PC where the CPU clock was
inconsistent, you'd get the same result.
Virtual PC uses just-in-time compilation to translate Intel x86
instructions to PowerPC instructions. As a result, your Linux
kernel, and everything above it, will keep stalling-and-resuming
as the virtual machine (re)compiles instructions that need to be
translated before your Mac can execute them.
You cannot resolve this behaviour -- it's inherent in the virtual
machine's design, and because Linux responds to this behaviour as
something that can cause the kernel to fail, it'll something
that will keep appearing in your system log!
--
--
-- tonza (to e-mail, grab my "UUCP-like address", and translate
it to the usual SMTP/sendmail form; hint, the translation
is ridiculously simple!)
.
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