upb.git - a small protobuf implementation in C

Age	Commit message (Collapse)	Author
2011-09-20	Fix perf-tests.sh to skip building non-upb tests.	Joshua Haberman

2011-08-17	Benchmark JIT vs no JIT without forcing a whole-project recompile.	Joshua Haberman

2011-05-08	Decoder redesign in preparation for packed fields and start/endseq.	Joshua Haberman

2011-02-27	Use FDO for benchmarks, which gives a 10-15% improvement.	Joshua Haberman

2011-02-27	Default to -O3 if user doesn't specify opt.	Joshua Haberman
	However if the user does specify a -O flag, don't override the optimization setting for upb_def.o to -Os like we usually do.
2011-02-27	Fix bug in perf-tests.sh (some shells didn't care?)	Joshua Haberman

2011-02-15	Remove upb_dstate and specialize upb_decode_fixed for perf improvement.	Joshua Haberman
	The compiler wasn't keeping upb_dstate in memory anyway (which was the original goal). This simplifies the decoder. upb_decode_fixed was intended to minimize the number of branches, but since it was calling out to memcpy as a function, this turned out to be a pessimization. Performance is encouraging: plain32.parsestream_googlemessage1.upb_table: 254 -> 242 (-4.72) plain32.parsestream_googlemessage2.upb_table: 357 -> 400 (12.04) plain32.parsetostruct_googlemessage1.upb_table_byref: 143 -> 144 (0.70) plain32.parsetostruct_googlemessage1.upb_table_byval: 122 -> 118 (-3.28) plain32.parsetostruct_googlemessage2.upb_table_byref: 189 -> 200 (5.82) plain32.parsetostruct_googlemessage2.upb_table_byval: 198 -> 200 (1.01) omitfp32.parsestream_googlemessage1.upb_table: 267 -> 265 (-0.75) omitfp32.parsestream_googlemessage2.upb_table: 377 -> 465 (23.34) omitfp32.parsetostruct_googlemessage1.upb_table_byref: 140 -> 151 (7.86) omitfp32.parsetostruct_googlemessage1.upb_table_byval: 131 -> 131 (0.00) omitfp32.parsetostruct_googlemessage2.upb_table_byref: 204 -> 214 (4.90) omitfp32.parsetostruct_googlemessage2.upb_table_byval: 200 -> 206 (3.00) plain.parsestream_googlemessage1.upb_table: 313 -> 317 (1.28) plain.parsestream_googlemessage2.upb_table: 476 -> 541 (13.66) plain.parsetostruct_googlemessage1.upb_table_byref: 189 -> 189 (0.00) plain.parsetostruct_googlemessage1.upb_table_byval: 165 -> 165 (0.00) plain.parsetostruct_googlemessage2.upb_table_byref: 263 -> 270 (2.66) plain.parsetostruct_googlemessage2.upb_table_byval: 248 -> 255 (2.82) omitfp.parsestream_googlemessage1.upb_table: 306 -> 305 (-0.33) omitfp.parsestream_googlemessage2.upb_table: 471 -> 531 (12.74) omitfp.parsetostruct_googlemessage1.upb_table_byref: 189 -> 190 (0.53) omitfp.parsetostruct_googlemessage1.upb_table_byval: 166 -> 172 (3.61) omitfp.parsetostruct_googlemessage2.upb_table_byref: 258 -> 270 (4.65) omitfp.parsetostruct_googlemessage2.upb_table_byval: 248 -> 265 (6.85)
2011-02-09	Precompute bit offset and bitmask for a small perf improvement.	Joshua Haberman

2009-08-12	Refactoring: unify upb_msg.	Joshua Haberman
	The cost is that a upb_msg will now always have an overhead of 2sizeof(void). This is comparable to proto2 overhead. The benefit is that upb_msg is now self-describing, and read-only algorithms can now operate on a upb_msg regardless of the memory-management scheme. Also, upb_array and upb_string now know inherently if they own their associated memory, and upb_array has a generic pointer for memory management purposes like upb_msg does.
2009-08-04	More work on benchmarks (performance tests).	Joshua Haberman