[patch] Auto-setting hz to 100 inside QEMU/VMWare
G. Stanley
gary at vsnx.net
Fri Dec 28 00:39:19 PST 2007
At 03:03 AM 12/28/2007, Mike Silbersack wrote:
>When running FreeBSD inside QEMU / VMWare, one of my pet peeves is
>that time is completely inaccurate. This seems to be cured by
>setting kern.hz=100 (down from the default of 1000) in
>/boot/loader.conf, but I'm getting sick of doing that every time I
>set up a virtual box.
>
>So, here's a patch to have the kernel auto-detect that it's running
>inside one of those two environments and automatically make that adjustment.
>
>If you're running FreeBSD inside any other virtual environments
>(Parallels? Microsoft Virtual PC?) and can detect them via data in
>kenv, I'll be happy to add them to the patch as well.
>
>I have only tested this patch in QEMU so far, I will test inside
>VMWare tomorrow.
>
>If anyone could review and/or test this, it would be appreciated.
I had a diff, but I lost it due to hardware crash... Anyways, I've
tested your patch with VMWare and it works perfectly.
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