cvs commit: src/sys/net ieee8023ad_lacp.c ieee8023ad_lacp.h if_lagg.c if_lagg.h

[John Baldwin]

On Monday 17 September 2007 04:32:08 pm Andrew Thompson wrote:
> On Mon, Sep 17, 2007 at 09:18:48AM -0700, Alfred Perlstein wrote:
> > * Andrew Thompson <thompsa at FreeBSD.org> [070914 18:11] wrote:
> > > thompsa     2007-09-15 01:11:26 UTC
> > > 
> > >   FreeBSD src repository
> > > 
> > >   Modified files:        (Branch: RELENG_6)
> > >     sys/net              ieee8023ad_lacp.c ieee8023ad_lacp.h 
> > >                          if_lagg.c if_lagg.h 
> > >   Log:
> > >   MFC
> > >    Change from a mutex to a read/write lock. This allows the tx port to 
be
> > >    selected simultaneously by multiple senders and transmit/receive is 
not
> > >    serialised between aggregated interfaces.
> > 
> > Rad! :)
> 
> And big thanks to you for MFCing it.

Have you benchmarked this?  Because rwlocks don't adaptively spin when a 
reader holds the lock, there are some cases where a mutex actually performs 
better than a rwlock.

-- 
John Baldwin