FreeBSD 6.0 auf VMware Bediener Zeit und TaktgeberSlow Down

FreeBSD 6.0, beim Laufen als Betriebssystem des Gastes in VMware Bediener oder in VMware Workstation 5.0, das FreeBSD System tickende Verlangsamung des beträchtlichen Taktgebers antrifft, bis so stark wie 60% von Zeitverlust verglich mit Realzeittaktgeber. Berichtigen Sie sogar, nachdem Sie den Taktgeber und einstellen die Zeit richtig zurückstellen, nach einer Weile, der Abstand zwischen FreeBSD virtueller Maschinenzeit und tatsächlicher Zeit seien Sie verbreitern.

Eine mögliche Lösung oder Workaround zu diesem Problem ist, den Gebrauch APIC zu sperren (Anmerkung: Nicht ACPI) durch das Hinzufügen der folgenden Linie in /boot/loader.conf:

hint.apic.0.disabled=1

Indem man APIC Vorrichtung sperrt, wird FreeBSD gezwungen, um auf die IRQ Timer zurück zu fallen, um die Rate des Taktgebers zu vermeiden und Timer auf emulierter FreeBSD Maschine auf VMware verlangsamt. Das unten seitliche zu dieser Auflösung ist, daß FreeBSD nicht Durchläufe innen da SMP Kernmodus als virtuelle SMP Maschine auf der emulierten Maschine kann.

Eine andere Alternative ist, heraus zu kommentieren die „Vorrichtung apic“ Linie in der Kern Configakte und den Kern umzubauen, aber nur wenn Sie technisch sind, wissen Sie, was Sie tun.

Für VMware Wirt in Betriebssystem Windows NT, kann Neuladen und gelaufen worden dem Windows OS im sicheren Modus die falsche Ausgabe des TIMINGs auch lösen, obgleich es besser ist, die vollständige Maschine als FreeBSD anstatt Betrieb zu formatieren und anzubringen es als Windows sicherer Moduswirt.

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Teilen Sie und tragen Sie bei oder erhalten Sie technische Unterstützung und helfen Sie an Meine Digital Leben-Foren.



This entry was posted on Wednesday, April 12th, 2006 at 5:26 pm and is filed under Operating Systems. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

5 Responses to “FreeBSD 6.0 on VMware Server Time and Clock Slow Down”

  1. Rexiology... : Clock in a VMWare FreeBSD Guest Runs More Slowly or Quickly Than Real Time...
    January 7th, 2007 20:30
    1

    [...] , vmware, APIC Share this post: email it! | bookmark it! | digg it! | live it! Published 07-01-2007 08:28 by Rex Filed under Useful Tools, Information Technology,Linux [...]

  2. Planeta FreeBSD » Clock in a VMWare FreeBSD Guest Runs More Slowly or Quickly Than Real Time…
    January 7th, 2007 21:08
    2

    [...] ;umm, seems that I am little bit enthusiastic about knowing all those unix-like system recently, since I didn’t pay ;much time to know ;them before. right now I’ve set up ;3 VMs with vmware‘>CentOS4.4 , Gentoo Linux 2006 ;(since it is able to run in Sun SPARC machine), FreeBSD 6.1 , and going to setup one more VM with Sun Solaris 10 x86 (11/2006 version) ;arch to get familiar with all those main stream unix-like OSes.while toying around with Gentoo and FreeBSD, I did found that Gentoo seems had no problems on the clock issue happened in my CentOS as well as FC6 as described in my previous post. but FreeBSD did encounter this problem again. the clock is much slower than real one on the host OS.by searching to Google, I found this post saying about FreeBSD clock is slowing when acting in VMWare as guest OS, and it was also the same reason in Linux that the OS is using APIC to get the clock for the time. the solution is to disable APIC on the boot time by editing /boot/loader.conf and put a line:hint.apic.0.disabled=1in the file and reboot FreeBSD, or to ;’to comment out the “device apic” line in the kernel config file and rebuild the kernel’. also by doing so will loose the ability for the guest OS to run in SMP mode. pretty same as what ;happened in Linux. After doing the loader.conf modification and reboot the FreeBSD VM, the clock is back to normal without problem. by installing VMWare-Tools into FreeBSD vm, verifying that vmware-guestd is running and also in the FreeBSD guest OS’s .vmx file, set toos.syncTime to TRUE, the time in my FreeBSD vm is back to normal and won’t need NTP to sync the real time, just like what I did in my CentOS in previous post. It’s pretty cool that I can run all those 3 VMs with different unix-like OSes simutaniously in my Windows 2003 R2 Server with 2GB RAM. I gave ;each guest OS 384mb RAM to run and thanks to VMWare Workstation’s dynamic memory allocation technology, while my testing of those 3 VMs I can still have more than 1 gb RAM for my host OS. I think it should be no problem for me to boot up one more Solaris 10 VM in the same time. The goal is to understanding all those system and networking administration tasks on those different main-stream unix-like OSes and further more to host web applications and database systems on them. maybe than trying to develop some Mono projects ;to run ASP.NET websites ;upon them. ;I’ve already found that it’s pretty different on the admin of ; Linux and BSD systems since it’s pretty different on the directory structures as well as those admin commands and locations of various config files. wondering if it’s also different ;in a Solaris OS… anyway, it’s always nice to learn new things, and I am enjoying it on my weekend… Technorati Tags: linux ;, ;freebsd, ;solaris, ;CentOS, ;ntp, ;clock, ;kernel , ;vmware, ;APIC ; [...]

  3. Planeta Gentoo » Comment on FreeBSD 6.0 on VMware Server Time and Clock Slow Down by Planeta FreeBSD » Clock in a VMWare FreeBSD Guest Runs More
    January 8th, 2007 00:20
    3

    [...] Original post by Comments for My Digital Life [...]

  4. Permasalahan Time di FreeBSD GuestOS pada VMware « Admin Juga Manusia 2.0 ™
    July 3rd, 2007 07:02
    4

    [...] 2. Tambahkan baris ‘hint.apic.0.disabled=1′ di /boot/loader.conf. Solusi ini saya dapat dari link ini. [...]

  5. Virtualized LoadRunner? (Part 3 of 3) by LoadRunner TnT
    October 13th, 2007 14:41
    5

    [...] FreeBSD 6.0 on VMware Server Time and Clock Slow Down [from My Digital Life] [...]

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