Re: [RFC][CFT] GEOM direct dispatch and fine-grained CAM locking

2013-09-05 Thread Olivier Cochard-Labbé
On Thu, Sep 5, 2013 at 11:38 PM, Alexander Motin wrote: > I've found and fixed possible double request completion, that could cause > such symptoms if happened. Updated patch located as usual: > http://people.freebsd.org/~mav/camlock_patches/camlock_20130905.patch > Good catch! this new patch (ap

Re: [RFC][CFT] GEOM direct dispatch and fine-grained CAM locking

2013-09-05 Thread Alexander Motin
On 04.09.2013 19:31, Olivier Cochard-Labbé wrote: On Wed, Sep 4, 2013 at 9:01 AM, Alexander Motin wrote: - HP EliteBook 8460p (amd64: r255188) with DVD replaced by a second hardrive (where fbsd is installed): It crash just after the message "GEOM: new disk ada1" during boot screenshot of the

Again about pbuf_mtx

2013-09-05 Thread Alexander Motin
Hi. Some may remember that not so long ago I complained about high lock congestion on pbuf_mtx. At that time switching the mutex to padalign reduced the problem. But now after improving scalability in CAM and GEOM and doing more then half million IOPS on 32-core system I again heavily hit tha