On Monday 13 September 2010, walt wrote: > On 09/13/2010 05:49 AM, Frank Mehnert wrote: > > On Sunday 12 September 2010, walt wrote: > >> I'm using the latest OSE.svn, and I'm seeing Windows 7 guests running at > >> one-third the usual speed (linux host). > > > > We also had a check of the time which is used for a Windows 7 > > installation and were not able to observe any differences between 3.2.8 > > and current trunk. We tested this on an Intel Xeon E5345 (2 x 4 cores) on > > Windows Server 2008. > > I found the guilty commit: > > ------------------------------------------------------------------------ > r32410 | vboxsync | 2010-09-10 07:19:33 -0700 (Fri, 10 Sep 2010) | 2 lines > > Got rid of unnecessary dirty page flush in InvalidatePage. (NOTE: high risk > change) > ------------------------------------------------------------------------ > > I guess this must be a different problem than the one Huihong Luo reported > because this is a very recent commit. > > The difference is actually more like four times slower: 64-bit Windows7 on > 64-bit linux host normally takes 27 seconds from power-on to login prompt, > but after this commit it takes 74 seconds. Not negligible. > > I don't have any Windows hosts I can test -- I don't need a Windows machine > any longer thanks to you guys :)
Thanks for this information! Does your host have an Intel CPU or an AMD CPU? Kind regards, Frank -- ORACLE Deutschland B.V. & Co. KG Dr.-Ing. Frank Mehnert Werkstrasse 24 Staff Engineer, VirtualBox 71384 Weinstadt, Germany mailto:[email protected] Hauptverwaltung: Riesstr. 25, D-80992 München Registergericht: Amtsgericht München, HRA 95603 Komplementärin: ORACLE Deutschland Verwaltung B.V. Rijnzathe 6, 3454PV De Meern, Niederlande Handelsregister der Handelskammer Midden-Niederlande, Nr. 30143697 Geschäftsführer: Jürgen Kunz, Marcel van de Molen, Alexander van der Ven
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