Date: Thu, 15 Jan 2015 14:25:02 -0600 From: Bryan Venteicher <bryanv@daemoninthecloset.org> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: emulation@freebsd.org, Lev Serebryakov <lev@freebsd.org>, FreeBSD-Current <freebsd-current@freebsd.org> Subject: Re: DigitalOcean offers VMs with FreeBSD! Message-ID: <CAMo0n6QLmEXVGVkgRXsov5VOY87VuJkEERzzhHr1fM2jFToO1g@mail.gmail.com> In-Reply-To: <20150115154443.GA10325@zxy.spb.ru> References: <54B7A494.50205@FreeBSD.org> <54B7DC97.7050809@FreeBSD.org> <20150115154443.GA10325@zxy.spb.ru>
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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=3D8888487 > > May be IOPS quotation? > Can you test with dd and custom kernel with MAXPHYS=3D1048576 ? > =E2=80=8BWhat's the value of kern.timecounter.hardware? It will likely be e= ither 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. In the meanwhile, not completely foolproof workaround is to use the TSC-low timecounter source. [1] - https://lists.freebsd.org/pipermail/freebsd-arch/2015-January/016587.html > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org= " >
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