On Thu, May 08, 2014 at 06:42:16AM -0700, Tvrtko Ursulin wrote: > > On 04/28/2014 04:22 PM, bradley.d.volkin@xxxxxxxxx wrote: > > From: Brad Volkin <bradley.d.volkin@xxxxxxxxx> > > > > For clients that submit large batch buffers the command parser has > > a substantial impact on performance. On my HSW ULT system performance > > drops as much as ~20% on some tests. Most of the time is spent in the > > command lookup code. Converting that from the current naive search to > > a hash table lookup reduces the performance impact by as much as ~10%. > > I have another question - what about register lookups, do they come up > in profiling as significant? So far no. The command lookup happens for every command in every batch. The register lookup only happens for certain commands. I think most batches don't include such commands and those that do may only have a few instances. Ken might have a better sense of the fequency. Brad > > Regards, > > Tvrtko _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
