[sheepdog] [PATCH v2 0/5] work: implement a dynamically changing thread pool

[MORITA Kazutaka]

At Thu, 28 Feb 2013 19:30:34 +0800,
Liu Yuan wrote:
> 
> On 02/28/2013 06:46 PM, MORITA Kazutaka wrote:
> > This removes a short thread feature, and adds a worker thread pool
> > again with support of dymanic pool size.  The reasons we need this
> > series are:
> > 
> >  - Currently, sheep calls a pthread_create for every I/O request, but
> >    the overhead is not so cheap especially when the underlying disk is
> >    fast (e.g. the disk has non-volatile cache).
> > 
> >  - Some operations (e.g. object cache pusher) consumes too many
> >    threads and causes a problem.  To control the maximum number of
> >    threads, a thread pool model is better for us.
> > 
> > 
> > Changes from v1:
> >  - introduce a protection period for shrining work queue to avoid
> >    frequent creation/deletion of threads
> >  - rebase onto the latest master
> >  - some cleanups
> > 
> > MORITA Kazutaka (5):
> >   work: remove short thread
> >   logger: use LWP for worker idx
> >   work: remove unused codes
> >   work: glow the number of worker threads dynamically
> >   work: shrink the number of worker threads dynamically
> 
> Can this patch set work with tracer enabled?

I'm not sure, but I guess the older version of tracer, which were used
before we introduce a short thread, would work with this series.  I
think we can work on it after we merge this series.

Thanks,

Kazutaka