On Fri, 2011-03-11 at 15:45 -0700, Sage Weil wrote:
> On Fri, 11 Mar 2011, Jim Schutt wrote:
> > > So it occurs to me that one call to Message::put() entails many
> > > calls to buffer::ptr::release(), depending on what the message
> > > is, right? Maybe time the "delete _raw" in there and assert()
> > > if it's too long?
> >
> > Also, any chance all incoming data is causing buffer_total_alloc
> > to be contended? I don't have libatomic_ops either, so that
> > atomic_t is implemented via a pthread_spinlock_t, right?
> > How to check that?
>
> Hmm, it could be. I pushed a nobuffer branch that compiles out the
> buffer_total_alloc accounting, if you want to give that a go.
That seems to have helped, although it's not a complete solution.
I still got some OSDs failed, but since I use
osd min down reporters = 3
osd min down reports = 2
only 1 OSD got marked down; it noticed quickly and marked
itself up, and my 64-client dd finished. That's new for
me at 96 OSDs.
I saw this on this run:
# grep -Hn RefCountedObject::put osd.*.log | egrep "took [0-9][0-9]\." | wc -l
192
# grep -Hn RefCountedObject::put osd.*.log | egrep "took [1-9]\." | wc -l
12578
which compares to a previous run in an earlier email:
> > > # grep -Hn RefCountedObject::put osd.*.log | egrep "took [1-9]\." | wc -l
> > > 8911
> > >
> > > # grep -Hn RefCountedObject::put osd.*.log | egrep "took [0-9][0-9]\." |
> > > wc -l
> > > 415
-- Jim
>
> sage
>
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