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Date:      Mon, 20 Apr 2020 20:06:07 +1000
From:      Jason Tubnor <jason@tubnor.net>
To:        FreeBSD virtualization <freebsd-virtualization@freebsd.org>
Subject:   Re: bhyve win-guest benchmark comparing
Message-ID:  <CACLnyCKVN1LMSe2Y4h1Mh-549QSHKyZh1WDMV4E1cdH9guGEWQ@mail.gmail.com>
In-Reply-To: <20200420090934.d6gkjg5er5ij36d2@nexus.home.palmen-it.de>
References:  <9e7f4c01-6cd1-4045-1a5b-69c804b3881b@omnilan.de> <f5a78199-9306-bccc-606a-23c30f56b0f1@omnilan.de> <20200419172345.Horde.alwm2Bn67wrcUt5a0zVjQ9f@app.eeeit.de> <69553fba-4ee5-67dc-a052-b58bb8100061@netfence.it> <20200420090934.d6gkjg5er5ij36d2@nexus.home.palmen-it.de>

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On Mon., 20 Apr. 2020, 7:09 pm Felix Palmen, <felix@palmen-it.de> wrote:

>
> > Xeon are not affected, since they have vAPIC, so they should be already
> > running as fast as possible. Correct?
>
> I don't know the details, but on my Xeon E3-1240L v5, it did have a huge
> effect.
>
>
>

^^^ This.

Not all Xeon CPUs have vAPIC, especially the cheaper or workstation class
so this may end up benefitting a lot of users. It turned our windows guest
in their 1ru Xeon hosts into a different beast instantly.

Cheers,

Jason



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