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Date:      Thu, 13 Feb 2003 22:30:03 +0100
From:      "=?iso-8859-1?Q?yvon.quere@laposte.net?=" <yvon.quere@laposte.net>
To:        "=?iso-8859-1?Q?freebsd-questions?=" <freebsd-questions@freebsd.org>
Subject:    =?iso-8859-1?Q?Re:_5.0-RELEASE_under_VMWare_3_:_slowdown_and_even_hangup?=
Message-ID:  <HA9NQ3$F9B36CF0A6C472C8172B182D1EA7D1CF@laposte.net>

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Hi there everyone



At 10:51 AM +0100 2/13/03, yvon.quere@laposte.net wrote:

>You will find an option called CPU_DISABLE_CMPXCHG



I read that one and didn't read (my newbie fault) that it was 

so closely related to VMWare.



>I realize you then have the problem of how to compile the new

>kernel when it takes so long to do anything with the standard

>GENERIC kernel.  Perhaps it would go better if you booted up 

>in

>single-user mode, and then compiled and installed the new 

>kernel.



That's a good idea, even if I'm not sure single user would 

make a difference. I imagine that the same machine code is 

being called when doing a make depend, make, cc & stuff.



My short term method has been (all day long) to reboot the 

guest os from time to time (when things get slow, but before 

things get *BLOCKED*) and relaunch the build procedure.



However, this is quite difficult and cumbersome to achieve.



I, for sure, would have preferred a sysctl option if I 

understand that it is far too low level for this.



In the end, compiling a new kernel on a non-VMWare host sounds 

interesting but might sound "bizarre" when using the VMWare-do-

not-need-new-hardware-to-try-new-OS approach.



My new kernel build is not over right now and I'll probably 

find it blocked tomorrow morning because of no reboot :(



Thanks for your help anyway, and sorry for the RTFM glitch ;-)



Yvon

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