cvs commit: src/sys/geom geom_io.c
Pawel Jakub Dawidek
pjd at FreeBSD.org
Fri Oct 26 13:46:28 PDT 2007
On Fri, Oct 26, 2007 at 03:57:03PM +0000, Alexey Dokuchaev wrote:
> On Fri, Oct 26, 2007 at 06:55:00AM +0000, Pawel Jakub Dawidek wrote:
> > pjd 2007-10-26 06:55:00 UTC
> > FreeBSD src repository
> > Modified files:
> > sys/geom geom_io.c
> > Log:
> > Save stack only when KTR_GEOM is both compiled into the kernel and enabled
> > in debug.ktr.mask. Because saving stack is very expensive, it's better only
> > to do it when one really wants to.
> Do you by chance have benchmark results? I'd like to know what impact
> does it cause, unless I'm asking too much. :-)
It can make your system to crawl when you do a lot of I/Os.
Pawel Jakub Dawidek http://www.wheel.pl
pjd at FreeBSD.org http://www.FreeBSD.org
FreeBSD committer Am I Evil? Yes, I Am!
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