Re: 2.6.18 is problematic in VMware

From: Zachary Amsden
Date: Mon Oct 30 2006 - 12:51:29 EST


Jan Engelhardt wrote:
Hello list,


I have observed a strange slowdown with the 2.6.18 kernel in VMware. This happened both with the SUSE flavor and with the FC6 installer CD (which I am trying right now). In both cases, the kernel "takes its time" after the following text strings:

* Checking if this processor honours the WP bit even in supervisor mode... Ok.
* Checking 'hlt' instruction... OK.

What's with that?

Thanks. It is perhaps the jiffies calibration taking a while because of the precise timing loop. Are you reasonably confident that it is a regression in performance over 2.6.17? The boot sequence is pretty complicated, and a lot of it is difficult / slow to virtualize, so it could just be alternate timing makes the boot output appear to stall, when in fact the raw time is still about the same. I will run some experiments.

Zach
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