Chiebot-Mirror/protobuf - protobuf - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Joshua Haberman	0bf063a2ca	Shrink overhead of message representation.	4 years ago
Joshua Haberman	a202ce9629	Add UPB_FORCEINLINE for varint32 decoding. This speeds up the decoder by >20% and also reduces code size slightly! name old time/op new time/op delta ArenaOneAlloc 20.4ns ± 0% 20.2ns ± 0% -1.10% (p=0.000 n=12+11) ArenaInitialBlockOneAlloc 5.25ns ± 0% 5.25ns ± 0% ~ (p=0.786 n=11+12) ParseDescriptorNoHeap 17.1µs ± 0% 13.1µs ± 0% -23.29% (p=0.000 n=11+12) ParseDescriptor 17.4µs ± 1% 13.5µs ± 1% -22.51% (p=0.000 n=12+12) SerializeDescriptor 10.7µs ± 0% 10.9µs ± 0% +1.95% (p=0.000 n=12+12) FILE SIZE VM SIZE -------------- -------------- +2.7% +16 +2.7% +16 [LOAD #2 [RX]] +0.5% +16 [ = ] 0 [Unmapped] -1.4% -72 -0.7% -32 upb/decode.c +3.1% +98 +3.1% +98 decode_msg [DEL] -170 [DEL] -130 decode_varint32 -0.0% -40 -0.0% -16 TOTAL	4 years ago
Joshua Haberman	5741eb9ad7	Expanded benchmarking script and added one size opt to the encoder.	4 years ago
Joshua Haberman	9b31e8fe12	Merged common encode tag paths.	4 years ago
Joshua Haberman	08b6d2d6fd	Rewrite of the decoder (#263 ) New code is smaller (in both source size and compiled size) and faster. # Speed The decoder speeds up on all machines I tested, though the amount of speedup varies. I was only able to test Intel CPUs. ### Linux Desktop ``` CPU: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz OS: Linux name old time/op new time/op delta CreateArena 4.72ns ± 0% 4.93ns ± 0% +4.47% (p=0.000 n=11+11) ParseDescriptor 12.4µs ± 1% 9.1µs ± 1% -26.65% (p=0.000 n=11+11) ``` ### Mac Laptop ``` CPU: Intel(R) Core(TM) i7-8850H CPU @ 2.60GHz OS: macOS name old time/op new time/op delta CreateArena 5.33ns ± 3% 5.58ns ± 2% +4.69% (p=0.000 n=12+12) ParseDescriptor 15.0µs ± 2% 11.9µs ± 2% -20.20% (p=0.000 n=12+12) ``` ### Linux Workstation ``` CPU: Intel(R) Xeon(R) Gold 6154 CPU @ 3.00GHz OS: Linux name old time/op new time/op delta CreateArena 5.29ns ± 0% 5.52ns ± 0% +4.37% (p=0.000 n=10+12) ParseDescriptor 18.6µs ± 0% 16.4µs ± 0% -11.54% (p=0.000 n=12+12) ``` # Size A few source files grow marginally because of some arena functionality moved inline. But `upb/decode.c` shrinks by 30% on Linux: ``` VM SIZE -------------- +2.1% +283 upb/json_decode.c +24% +205 upb/msg.c +8.4% +115 upb/upb.c +0.9% +28 upb/reflection.c [ = ] 0 upb/def.c [ = ] 0 upb/encode.c [ = ] 0 upb/json_encode.c [ = ] 0 upb/table.c -30.3% -1.51Ki upb/decode.c -0.7% -738 TOTAL ```	5 years ago