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:
> > >
> > >
> > > 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 . 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
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