vmdaemon CPU usage and poor performance in 10.0-RELEASE

[Polyack, Steve]

Excuse my poorly formatted reply at the moment, but this seems to have fixed our problems.  I'm going to update the bug report with a note.

Thanks Alan!

Steve Polyack

> -----Original Message-----
> From: owner-freebsd-stable at freebsd.org [mailto:owner-freebsd-
> stable at freebsd.org] On Behalf Of Alan Cox
> Sent: Wednesday, August 13, 2014 12:14 PM
> To: Polyack, Steve
> Cc: Kurt Jaeger; freebsd-stable at freebsd.org
> Subject: Re: vmdaemon CPU usage and poor performance in 10.0-RELEASE
> 
> On Wed, Aug 13, 2014 at 10:42 AM, Polyack, Steve <
> Steve.Polyack at intermedix.com> wrote:
> 
> >
> > > -----Original Message-----
> > > From: Kurt Jaeger [mailto:lists at opsec.eu]
> > > Sent: Wednesday, August 13, 2014 11:25 AM
> > >
> > > Hi!
> > >
> > > > We have a handful of database servers running FreeBSD 10.0-RELEASE
> > > > and PostgreSQL 9.3.4.  The servers have 128GB or 256GB of RAM.
> > >
> > > Are you aware of the recent work on that topic ?
> > >
> > > https://www.freebsd.org/news/status/report-2014-04-2014-
> > > 06.html#PostgreSQL-Performance-Improvements
> > >
> > > Maybe kib@ knows more about this ?
> > >
> >
> > I've recently read over this and some other posts, but they all seem to
> > center around poor postgres performance.  In our case at least, some light
> > to medium usage of postgres generally makes the entire system unusable.
> >
> > The patches & documents linked there also all seem to be for -CURRENT,
> > which we aren't running.  We're not too keen on the idea of using
> CURRENT
> > in production, either.  We're planning on testing 10-STABLE, but I was just
> > hoping to gain some insight into what the problem may be and whether
> recent
> > commits to vmdaemon code in the -STABLE tree may have a positive effect
> on
> > what we've seen.
> >
> >
> 
>  There is a good chance that your problem is fixed by r265945.
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