i386/118819: FreeBSD 6.2 in VMware is unstable and there is some 'calcru: runtime went backwards from...' on /var/log/messages

[Le Gal Jérôme]

>Number:         118819
>Category:       i386
>Synopsis:       FreeBSD 6.2 in VMware is unstable and there is some 'calcru: runtime went backwards from...' on /var/log/messages
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Dec 18 13:40:04 UTC 2007
>Closed-Date:
>Last-Modified:
>Originator:     Le Gal Jérôme
>Release:        FreeBSD 6.2
>Organization:
SimpleRezo
>Environment:
FreeBSD host.domain.com 6.2-RELEASE-p9 FreeBSD 6.2-RELEASE-p9 #20: Tue Dec 18 12:57:57 CET 2007     root at host.domain.com:/usr/obj/usr/src/sys/KERNEL  i386
>Description:
FreeBSD 6.2, with a non-GENERIC kernel, running as a guest operating system in VMware is very unstable.

Boot process is slow and there is lot of messages : 'calcru: runtime went backwards from xxxx[1] usec to xxxx[1] usec for pid <pid> (<process>)'. 
When it has booted, system's time is blocked and after few seconds system freezes and does not responds.


[1] : some numbers

>How-To-Repeat:
Install FreeBSD in VMware, and use a custom kernel built from /usr/src/sys/i386/conf/NOTES
>Fix:
In the kernel configuration, disable both options 'CPU_FASTER_5X86_FPU', and 'AUTO_EOI_1'



>Release-Note:
>Audit-Trail:
>Unformatted: