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Date:      Tue, 24 Jul 2018 13:01:47 -0700
From:      Cy Schubert <Cy.Schubert@cschubert.com>
To:        Konstantin Belousov <kostikbel@gmail.com>
Cc:        Ed Maste <emaste@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: i386 top reporting nan% or inf% WCPU
Message-ID:  <201807242001.w6OK1lFG002262@slippy.cwsent.com>
In-Reply-To: Message from Konstantin Belousov <kostikbel@gmail.com> of "Tue, 24 Jul 2018 21:17:03 %2B0300." <20180724181703.GK65334@kib.kiev.ua>

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In message <20180724181703.GK65334@kib.kiev.ua>, Konstantin Belousov 
writes:
> On Tue, Jul 24, 2018 at 01:43:55PM -0400, Ed Maste wrote:
> > I recently merged my work in progress tree up to r336665 and built a
> > i386 VM image. Running the image in QEMU (qemu-system-x86_64) and
> > executing 'top' I see the WCPU column reported as either nan% or inf%
> > for all processes.
> > 
> > Prior to today I hadn't built or tested i386 in a while, so I am not
> > sure off hand if this is a recent issue. amd64 is fine. Is anyone else
> > seeing this?
>
> I believe this is a qemu bug.  Their FPU emulation is very basic, at least
> it was so several years ago, when not using accelerated emulation.

Just tested on the i386 slice on my laptop. No problems there.


-- 
Cheers,
Cy Schubert <Cy.Schubert@cschubert.com>
FreeBSD UNIX:  <cy@FreeBSD.org>   Web:  http://www.FreeBSD.org

	The need of the many outweighs the greed of the few.





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