On Thu, Jan 15, 2015 at 9:44 AM, Slawa Olhovchenkov <s...@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. 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-unsubscr...@freebsd.org" > _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
