VirtualBox

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Ticket Resolution Summary Owner Reporter
#3772 obsolete USB serial interface adaptor can't be used Paul Lutus
Description

Presence of USB serial interface adaptor causes boot to fail. This is a regression from the prior version.

#3775 obsolete VB guest running SqueezeCenter crashes once playback starts dimitris
Description

Both host and guest are running i386 Ubuntu Intrepid.

The VB guest instance contains a SqueezeCenter music streaming server. When I start playback, with the music server streaming out to a hardware player on the host's LAN, I almost immediately see the VB instance crashing.

The server in the guest is accessing the MP3s through a read-only shared folder - the music actually lives on the host. There are also some NAT port-forwarding rules in place so that the server's streaming and web front-end ports are accessible from the host-side LAN.

There doesn't seem to be anything in the VB log about the guest dying (attached), but on the hosts's syslog I see:

Apr 17 19:16:23 greebo kernel: [35676.887957] VirtualBox[29102]: segfault at 21 ip b3b65159 sp b260e160 error 4 in VBoxDD.so[b3ab2000+1bb000]

#3779 obsolete 100% cpu load on host with 1000hz guest kernels Niki Waibel
Description

yes, the manual says:

11.3 Linux guests
11.3.1 Linux guests may cause a high CPU load
Some Linux guests may cause a high CPU load even if the guest system appears to
be idle. This can be caused by a high timer frequency of the guest kernel. Some
Linux distributions, for example Fedora, ship a Linux kernel configured for a timer
frequency of 1000Hz. We recommend to recompile the guest kernel and to select a
timer frequency of 100Hz.

but i'd like to request an enhancement to fix this.

sure, using a 100hz guest kernel helps, reducing the load on the host. but running 10 100hz guest kernels will give the same problem.

further, running 1000hz kernels on other virtualisation sw works just smoothly. this means, with some effort, it is possible to fix this issue.

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