From: "Xiong, James" <james.xi...@intel.com>
With the current implementation, brw_bufmgr may round up a request
size to the next bucket size, result in 25% more memory allocated in
the worst senario. For example:
Request size Actual size
32KB+1Byte 40KB
.
8MB+1Byte 10MB
.
96MB+1Byte 112MB
This series align the buffer size up to page instead of a bucket size
to improve memory allocation efficiency. Performances are almost the
same with Basemark ES3, GfxBench4 and 5:
Basemark ES3
score peak memory allocation
before after diff before after diff
21.537462 21.888784 1.61% 419766272 408809472 -10956800
19.566198 19.763429 1.00%
GfxBench 4.0
score peak memory
before after diff before after
diff
gl_4 564.6052246094 565.2348632813 0.11% 578490368 550199296
-28291072
gl_4_off 727.0440063477 703.5833129883 -3.33% 629501952 598216704
-31285248
gl_manhattan 1053.4223632813 1057.3690185547 0.37% 449568768 421134336
-28434432
gl_trex 2708.0656738281 2699.2646484375 -0.33% 130076672 125042688
-5033984
gl_alu2 1207.1490478516 1212.2220458984 0.42% 55496704 55029760
-466944
gl_driver2 103.0383071899 103.5478439331 0.49% 13107200 12980224
-126976
gl_manhattan_off 1703.4780273438 1736.9074707031 1.92% 490016768 456548352
-33468416
gl_trex_off 2951.6809082031 3058.5422363281 3.49% 157511680 152260608
-5251072
gl_alu2_off 2604.0903320313 2626.2524414063 0.84% 86130688 85483520
-647168
gl_driver2_off 204.0173187256 207.0510101318 1.47% 40869888 40615936
-253952
GfxBench 5.0
score peak memory
before after before after diff
gl_5 259 259 1137549312 1038286848 -99262464
gl_5_off 297 297 1170853888 1071357952 -99495936
Xiong, James (4):
i965/drm: Reorganize code for the next patch
i965/drm: Round down buffer size and calculate the bucket index
i965/drm: Searching for a cached buffer for reuse
i965/drm: Purge the bucket when its cached buffer is evicted
src/mesa/drivers/dri/i965/brw_bufmgr.c | 139 ++++++++++++++++++---------------
src/util/list.h | 5 ++
2 files changed, 79 insertions(+), 65 deletions(-)
--
2.7.4
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-dev
