Date: Sat, 1 Feb 2014 22:19:18 -0500 From: Aryeh Friedman <aryeh.friedman@gmail.com> To: Peter Grehan <grehan@freebsd.org> Cc: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: some interesting observations on the relative performance of kvm vs. bhyve Message-ID: <CAGBxaXmmd-=q6vdaJO0CzQvcAu%2BCCUsCyK%2BQjrMVqAeXrVFeWA@mail.gmail.com> In-Reply-To: <52EDB899.9060703@freebsd.org> References: <CAGBxaXnOrL2SObPJemxzy%2B_%2Bhr0fePoCKFrHG3Cr-R5t=%2BuNHQ@mail.gmail.com> <52EDB899.9060703@freebsd.org>
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On Sat, Feb 1, 2014 at 10:16 PM, Peter Grehan <grehan@freebsd.org> wrote: > > I have 1 host that dual boots FreeBSD and Ubuntu 12.04.3 LTS and bhtyve > >> seems to be atleast 3 or 4 times faster with disk I/O then kvm using the >> most stripped down command lines I can come up with. >> > > I'm guessing that the default cache mode for qemu in that release is > "none". You may want to switch it to "writeback", which is what bhyve does > by default (it can be changed with AHCI, see bhyve(8)). > Is this also true of emulators/qemu (without kqemu)? -- Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org
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