Re: [Mesa-dev] [PATCH 7/9] i965: Use snoop bo for accessing query results on !llc

2017-06-15 Thread Chris Wilson
Quoting Kenneth Graunke (2017-06-15 00:13:14) > On Friday, June 9, 2017 6:01:38 AM PDT Chris Wilson wrote: > > Ony non-llc architectures where we are primarily reading back the > > results of the GPU queries, then we can improve performance by using a > > cacheable mapping of the results. Unfortuna

Re: [Mesa-dev] [PATCH 7/9] i965: Use snoop bo for accessing query results on !llc

2017-06-14 Thread Ian Romanick
On 06/09/2017 06:01 AM, Chris Wilson wrote: > Ony non-llc architectures where we are primarily reading back the On > results of the GPU queries, then we can improve performance by using a > cacheable mapping of the results. Unfortunately, enabling snooping makes > the writes from the GPU slower

Re: [Mesa-dev] [PATCH 7/9] i965: Use snoop bo for accessing query results on !llc

2017-06-14 Thread Kenneth Graunke
On Friday, June 9, 2017 6:01:38 AM PDT Chris Wilson wrote: > Ony non-llc architectures where we are primarily reading back the > results of the GPU queries, then we can improve performance by using a > cacheable mapping of the results. Unfortunately, enabling snooping makes > the writes from the GP

[Mesa-dev] [PATCH 7/9] i965: Use snoop bo for accessing query results on !llc

2017-06-09 Thread Chris Wilson
Ony non-llc architectures where we are primarily reading back the results of the GPU queries, then we can improve performance by using a cacheable mapping of the results. Unfortunately, enabling snooping makes the writes from the GPU slower, which may adversely affect pipelined query operations (wh