From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <8d4a75e55fc55419d48a3859337bc7da@plan9.bell-labs.com>
To: 9fans@9fans.net
Date: Fri,  8 Jan 2010 14:12:39 -0500
From: geoff@plan9.bell-labs.com
In-Reply-To: <3e1162e61001081100q356c0fbn31c779f60f8f53c0@mail.gmail.com>
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Subject: Re: [9fans] parallels
Topicbox-Message-UUID: ba120d48-ead5-11e9-9d60-3106f5b1d025

I don't have enough experience with VirtualBox to make a sensible
comparison.

The thing that none of the VM monitors seem to offer (though I'd love
to be proven wrong) is debugging tools for the guest operating
systems.  This is odd, as it was one of the major uses of VM/370.  So
if a guest kernel goes off into space, the VM monitor shuts down the
virtual machine or resets it, but provides no means to find out what
happened, though it's in a perfect position to easily do so.