On 01/10/2019 12:33 AM, Bruce Ferrell wrote: > I only have a couple windows VMs, Win7 and 2008r2. Host OS is Scientific Linux > 6.10 on a Dell R710. > > I saw some slowness after the update and changed the virtualization method to > KVM from Hyper-V (don't ask me how that got set) and that cleared it up.
Thanks, I'll give that a look. I didn't change anything there (haven't in 2+ years). Looking with VBoxManage, I have VT-x VPID: enabled VT-x unr. exec.: enabled Paravirt. Provider: Default Effective Paravirt. Prov.: HyperV State: powered off (since 2019-01-10T09:12:25.000000000) Which is what the manual says it should be under 10.4. Paravirtualization Providers https://www.virtualbox.org/manual/ch10.html I have tried with/without 2D acceleration enabled and 48/32M or dedicated video. It makes no difference. Both Command Prompt (cmd.exe) and PowerShell terminals are effected. (the listing still crawls) I've been through the event log with even view and it is clean. No issues out of the ordinary. This is a distinct and pronounced slowdown with 6.0.0. Ironically, all I use windows 7 vbox install for is helping people with programming questions on StackOverflow (I use Linux exclusively, but sometimes they have a MinGW or VS question that I need windows for) So my use of Win7 is primarily limited to using cmd.exe and building short C/C++ programs. That's why this isn't one of those things where is "umm, I think is a little slower...", this is one of those things "where it is immediately noticeable and damn near unusable..." I have another Win7 guest where the host is still 5.2.22 and it is fine. Any other ideas? I'm pretty well stumped. I don't have the option of dropping back to 5.2.22 on this server as it is Archlinux and running Linux 4.20. Could this be related to any of the Spectre mitigations that effect vbox on Linux 4.20? (I'm grasping here...) I'll keep looking at it. I don't even have enough info to open a bug-report other than what I've included in the e-mail. No errors thrown on host or guest, so it's just basically something that 6.0.0 did. -- David C. Rankin, J.D.,P.E. _______________________________________________ VBox-users-community mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/vbox-users-community _______________________________________________ Unsubscribe: mailto:[email protected]?subject=unsubscribe
