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Date:      Tue, 18 Oct 2016 15:41:07 +0700
From:      Victor Sudakov <vas@mpeks.tomsk.su>
To:        Paul Vixie <paul@redbarn.org>
Cc:        freebsd-virtualization@freebsd.org
Subject:   Re: choice of i386 vs amd64 guest
Message-ID:  <20161018084107.GA60191@admin.sibptus.transneft.ru>
In-Reply-To: <58058A64.6010908@redbarn.org>
References:  <20161018015903.GA42265@admin.sibptus.transneft.ru> <58058A64.6010908@redbarn.org>

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Paul Vixie wrote:
> 
> > 
> > When I must run several FreeBSD guests in bhyve, should I prefer i386
> > or amd64 guests provided a guest will never need more than 2-3 GB of
> > RAM? 
> 
> if you're running bind9, the sizeof(void *) will dominate your heap
> size, and a 32-bit guest will be better overall, given that you don't
> need the larger addressing size.

Those guests will be running web servers mostly.

> 
> for everything else, the larger register set on amd64 will matter more,
> and you should probably use a 64-bit guest.

There is an opinion that 64-bit systems use up more resources than
32-bit ones for the same tasks, it that not true?

-- 
Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
sip:sudakov@sibptus.tomsk.ru



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