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Side by Side Diff: third_party/protobuf/benchmarks/readme.txt

Issue 2600753002: Reverts third_party/protobuf: Update to HEAD (f52e188fe4) (Closed)
Patch Set: Created 3 years, 12 months ago
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1 Contents 1 Contents
2 -------- 2 --------
3 3
4 This folder contains three kinds of file: 4 This folder contains three kinds of file:
5 5
6 - Code, such as ProtoBench.java, to build the benchmarking framework. 6 - Code, such as ProtoBench.java, to build the benchmarking framework.
7 - Protocol buffer definitions (.proto files) 7 - Protocol buffer definitions (.proto files)
8 - Sample data files 8 - Sample data files
9 9
10 If we end up with a lot of different benchmarks it may be worth 10 If we end up with a lot of different benchmarks it may be worth
11 separating these out info different directories, but while there are 11 separating these out info different directories, but while there are
12 so few they might as well all be together. 12 so few they might as well all be together.
13 13
14 Running a benchmark (Java) 14 Running a benchmark (Java)
15 -------------------------- 15 --------------------------
16 16
17 1) Build protoc and the Java protocol buffer library. The examples 17 1) Build protoc and the Java protocol buffer library. The examples
18 below assume a jar file (protobuf.jar) has been built and copied 18 below assume a jar file (protobuf.jar) has been built and copied
19 into this directory. 19 into this directory.
20 20
21 2) Build ProtoBench: 21 2) Build ProtoBench:
22 $ javac -d tmp -cp protobuf.jar ProtoBench.java 22 $ javac -d tmp -cp protobuf.jar ProtoBench.java
23 23
24 3) Generate code for the relevant benchmark protocol buffer, e.g. 24 3) Generate code for the relevant benchmark protocol buffer, e.g.
25 $ protoc --java_out=tmp google_size.proto 25 $ protoc --java_out=tmp google_size.proto google_speed.proto
26 26
27 4) Build the generated code, e.g. 27 4) Build the generated code, e.g.
28 $ javac -d tmp -cp protobuf.jar tmp/benchmarks/*.java 28 $ cd tmp
29 $ javac -d . -cp ../protobuf.jar benchmarks/*.java
29 30
30 5) Run the test. Arguments are given in pairs - the first argument 31 5) Run the test. Arguments are given in pairs - the first argument
31 is the descriptor type; the second is the filename. For example: 32 is the descriptor type; the second is the filename. For example:
32 $ java -cp tmp:protobuf.jar com.google.protocolbuffers.ProtoBench \ 33 $ java -cp .;../protobuf.jar com.google.protocolbuffers.ProtoBench
33 'benchmarks.GoogleSize$SizeMessage1' google_message1.dat \ 34 benchmarks.GoogleSize$SizeMessage1 ../google_message1.dat
34 'benchmarks.GoogleSize$SizeMessage2' google_message2.dat 35 benchmarks.GoogleSpeed$SpeedMessage1 ../google_message1.dat
36 benchmarks.GoogleSize$SizeMessage2 ../google_message2.dat
37 benchmarks.GoogleSpeed$SpeedMessage2 ../google_message2.dat
35 38
36 6) Wait! Each test runs for around 30 seconds, and there are 8 tests 39 6) Wait! Each test runs for around 30 seconds, and there are 6 tests
37 per class/data combination. The above command would therefore take 40 per class/data combination. The above command would therefore take
38 about 8 minutes to run. 41 about 12 minutes to run.
39 42
40 43
41 Benchmarks available 44 Benchmarks available
42 -------------------- 45 --------------------
43 46
44 From Google: 47 From Google:
45 google_size.proto, 48 google_size.proto and google_speed.proto, messages
46 messages google_message1.dat and google_message2.dat. 49 google_message1.dat and google_message2.dat. The proto files are
50 equivalent, but optimized differently.
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