From owner-freebsd-hackers@FreeBSD.ORG  Wed May 26 17:30:56 2010
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From: Sean Bruno <seanbru@yahoo-inc.com>
To: jhell <jhell@dataix.net>
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Date: Wed, 26 May 2010 10:29:29 -0700
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Cc: freebsd-hackers <freebsd-hackers@freebsd.org>,
	"sbruno@freebsd.org" <sbruno@freebsd.org>
Subject: Re: Exposing Zone Sleeps
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On Tue, 2010-05-25 at 07:47 -0700, Sean Bruno wrote:
> > Hi Sean,
> > 
> > Nice work on this. I applied this to stable/8 r208530 and I am in the
> > process of compiling the kernel right now. Everything else has built &
> > runs as expected "i386". Attached is the adjusted patch which was one
> > modification to the line number for uz_sleeps in sys/vm/uma_int.h.
> > 
> > 8 files changed, 106 insertions(+), 7 deletions(-)
> > 
> > For those wishing to apply this patch and test for them self:
> > 
> > cd /usr/src
> > patch </path/to/sleep_stat_stable8_r208530.diff
> > cd /usr/src/include
> > make obj && make depend && make includes && make install
> > cd /usr/src/lib/libmemstat
> > make obj && make depend && make includes && make install
> > cd /usr/src/usr.bin/vmstat
> > make obj && make depend && make install
> > cd /usr/src
> > make kernel KERNCONF=YOUR_KERN_CONF
> > reboot
> > 
> > Can't wait to see some results from this & I will report back with
> > either negative results of the build & run or positive results from the
> > stats collected.
> > 
> > If there is anything needed feel free to let me know and I will do what
> > is possible ASAP.
> > 
> > Thanks again,
> > 
> > - -- 
> > 
> >  jhell
> 
> Excellent.  Please check the output of vmstat -z and the appropriate
> sysctl.  I changed the display a bit to keep it from wrapping on a
> standard terminal.
> 
> Sean
> 
> P.S.  My intention it to MFC this to all releases.
> 

I do have a concern related to the removal of an #ifdef DDB in this
patch.  Any comments?

Sean