Opened 14 years ago
Last modified 8 years ago
#6842 closed defect
Guests clocks not kept synchronized after upgrade to VirtualBox 3.2.0, Ubuntu Server 10.04 — at Initial Version
| Reported by: | Matt | Owned by: | |
|---|---|---|---|
| Component: | other | Version: | VirtualBox 3.2.0 |
| Keywords: | clock time sync synchronization ubuntu x64 AMD64 | Cc: | |
| Guest type: | Windows | Host type: | Linux |
Description
I have a computer with an AMD Athlon64 X2 3600+, 6 GB RAM, and Cool 'n Quiet currently disabled in an attempt to solve this problem. It runs 64-bit Ubuntu Server and hosts two 64-bit Ubuntu Server and one 64-bit Windows Server 2003 guests. Back when I was using VirtualBox 3.1.x and the host and two Linux guests were running Ubuntu Server 9.10, I had a problem where the clocks on the two Ubuntu guests were kept in sync but the entire Windows guest (including its clock) would run slow after any significant load was placed on that system. (More information can be found in this forum post. I will not detail that problem in this bug unless asked to do so.)
I recently upgraded the host and two Linux guests to Ubuntu Server 10.04 and also upgraded to VirtualBox 3.2.0 using Aptitude. Since then, none of the guests' clocks are kept in sync. Sometimes the Ubuntu guests' clocks are more in sync than the Windows guest, sometime it's the other way around, and sometimes they're off by different amounts. Currently, the Windows guest is 607 seconds behind, one Ubuntu guest is 1,127 seconds behind, and the other is 183 seconds behind. They seem to speed up and slow down with no rhyme or reason. All guests have the latest version of VirtualBox Guest Additions installed. The two Ubuntu guests are using the linux-virtual kernel package from Aptitude, and the host uses the linux-server kernel; all are currently version 2.6.32-22-server. None of the guests see very heavy usage; they're idle most of the time and mainly just file servers that provide a few other services.
With VirtualBox 3.1.x/Ubuntu Server 9.04 I noticed long repetitions of "TM: Giving up catch-up attempt at a..." and "TM: u64DeltaPrev=... u64PrevNanoTS=... u64NanoTS=..." entries in the Windows guest's log; now those entries appear in the logs of all three guests.
Change History (3)
by , 14 years ago
| Attachment: | dmesg-2010-05-30 added |
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by , 14 years ago
| Attachment: | Subvuntu-VBox-2010-05-30.log added |
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Subvuntu guest VBox.log [2010-05-30]
by , 14 years ago
| Attachment: | Win2003Std64-VBox-2010-05-30.log added |
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Win2003Std64 guest VBox.log [2010-05-30]
dmesg [2010-05-30]