diff options
| author | 2021-09-14 17:49:04 -0700 | |
|---|---|---|
| committer | 2021-09-27 16:08:08 -0700 | |
| commit | 301c3f0c79469f976e86cd3ad3fd73d58d26b61d (patch) | |
| tree | ff2d57cb53d7200876a46bf13adac16987ded737 /vulkan/libvulkan/api.cpp | |
| parent | 3903bf05673ad06a09069889d1c0487a68bca801 (diff) | |
libbinder: RPC avoid poll
One of the major costs of RPC binder right now, compared to kernel
binder, is that we need to make two calls (poll + recv) whereas regular
binder can make one (ioctl) in order to read or write a command.
By removing this, we can get more comparable performance:
.../0 is KERNEL
.../1 is RPC
------------------------------------------------------------------------------------
Benchmark Time CPU Iterations
------------------------------------------------------------------------------------
BM_pingTransaction/0 37075 ns 18940 ns 36734
BM_pingTransaction/1 43729 ns 22184 ns 29429
BM_repeatTwoPageString/0 266736 ns 133091 ns 5273
BM_repeatTwoPageString/1 311444 ns 155527 ns 5016
BM_throughputForTransportAndBytes/0/64 43458 ns 22226 ns 28221
BM_throughputForTransportAndBytes/1/64 49153 ns 25038 ns 36104
BM_throughputForTransportAndBytes/0/1024 44020 ns 22418 ns 26449
BM_throughputForTransportAndBytes/1/1024 49634 ns 25554 ns 30230
BM_throughputForTransportAndBytes/0/2048 41932 ns 21246 ns 34684
BM_throughputForTransportAndBytes/1/2048 49055 ns 24907 ns 29689
BM_throughputForTransportAndBytes/0/4096 49634 ns 25179 ns 26992
BM_throughputForTransportAndBytes/1/4096 53318 ns 27001 ns 20076
BM_throughputForTransportAndBytes/0/8182 59537 ns 30068 ns 26722
BM_throughputForTransportAndBytes/1/8182 69677 ns 35005 ns 19992
BM_throughputForTransportAndBytes/0/16364 67281 ns 30455 ns 24654
BM_throughputForTransportAndBytes/1/16364 86123 ns 42752 ns 18558
BM_throughputForTransportAndBytes/0/32728 83229 ns 37705 ns 16238
BM_throughputForTransportAndBytes/1/32728 116709 ns 57592 ns 12981
BM_throughputForTransportAndBytes/0/65535 223220 ns 104757 ns 6015
BM_throughputForTransportAndBytes/1/65535 380800 ns 187026 ns 4544
BM_throughputForTransportAndBytes/0/65536 202564 ns 95486 ns 7548
BM_throughputForTransportAndBytes/1/65536 347559 ns 170957 ns 4795
BM_throughputForTransportAndBytes/0/65537 293614 ns 128131 ns 5816
BM_throughputForTransportAndBytes/1/65537 524383 ns 241437 ns 2927
BM_repeatBinder/0 62491 ns 33405 ns 19466
BM_repeatBinder/1 68013 ns 33611 ns 23083
Bug: 182940634
Test: binderRpcBenchmark (above)
Change-Id: I5cbaf40e5936bdce04b5f158ceac970e8f6ff2fa
Diffstat (limited to 'vulkan/libvulkan/api.cpp')
0 files changed, 0 insertions, 0 deletions