Date: Thu, 15 Jan 2015 20:31:01 +0000 From: Marcin Cieslak <saper@saper.info> To: Bryan Venteicher <bryanv@daemoninthecloset.org> Cc: emulation@freebsd.org, Lev Serebryakov <lev@freebsd.org>, FreeBSD-Current <freebsd-current@freebsd.org>, Slawa Olhovchenkov <slw@zxy.spb.ru> Subject: Re: DigitalOcean offers VMs with FreeBSD! Message-ID: <alpine.BSF.2.11.1501152030460.91610@z.fncre.vasb> In-Reply-To: <CAMo0n6QLmEXVGVkgRXsov5VOY87VuJkEERzzhHr1fM2jFToO1g@mail.gmail.com> References: <54B7A494.50205@FreeBSD.org> <54B7DC97.7050809@FreeBSD.org> <20150115154443.GA10325@zxy.spb.ru> <CAMo0n6QLmEXVGVkgRXsov5VOY87VuJkEERzzhHr1fM2jFToO1g@mail.gmail.com>
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On Thu, 15 Jan 2015, Bryan Venteicher wrote: > On Thu, Jan 15, 2015 at 9:44 AM, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote: > > > On Thu, Jan 15, 2015 at 06:28:23PM +0300, Lev Serebryakov wrote: > > > > > -----BEGIN PGP SIGNED MESSAGE----- > > > Hash: SHA512 > > > > > > On 15.01.2015 14:29, Lev Serebryakov wrote: > > > > > > > > > https://www.digitalocean.com/company/blog/presenting-freebsd-how-we-made-it-happen/ > > > > > > > > I didn't see this news on mailing lists :) > > > But here are some thread about FreeBSD is way slower than Linux in > > > these virtual installations > > > > > > https://news.ycombinator.com/item?id=8888487 > > > > May be IOPS quotation? > > Can you test with dd and custom kernel with MAXPHYS=1048576 ? > > > > > What's the value of kern.timecounter.hardware? It will likely be either > HPET or ACPI which means there is an VM exit whenever the guest reads from > the emulated timecounter hardware. That's why I have some WIP to add > support for KVMCLOCK [1]. I hope to merge those changes to HEAD in a week > and STABLE shortly after. > sysctl kern.timecounter.hardware kern.timecounter.hardware: HPET
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