Re-run benchmarks with --opt-level=3 as per #1. Results in modest imp…

…rovement.

Makefile

@@ -1,7 +1,7 @@
 RUST_CFG=
 
 compile:
- rustc -O ./src/lib.rs
+ rustc --opt-level=3 ./src/lib.rs
 
 install:
  cargo-lite install
@@ -31,7 +31,7 @@ bench: bench-runner
  RUST_TEST_TASKS=1 RUST_LOG=quickcheck,csv ./bench-runner --bench
 
 bench-runner: src/lib.rs src/test.rs src/bench.rs
- rustc -O --test $(RUST_CFG) src/lib.rs -o bench-runner
+ rustc --opt-level=3 --test $(RUST_CFG) src/lib.rs -o bench-runner
 
 test-clean:
  rm -rf ./test-runner ./bench-runner

bench/README.md

@@ -18,6 +18,6 @@ Then compile and run:
 To run the huge benchmark for Rust, make sure `ss10pusa.csv` is in the same 
 location as above and run:
 
- rustc -O huge.rs -o huge-rust
+ rustc --opt-level=3 huge.rs -o huge-rust
  time ./huge-rust
 

bench/results

@@ -1,14 +1,16 @@
-Benchmarks were run on an Intel i3930K. Note that the 'ns/iter' value is 
-computed by each language's microbenchmark facilities. I suspect the 
-granularity is big enough that the values are comparable.
+Benchmarks were run on an Intel i3930K. Note that the 
+'ns/iter' value is computed by each language's microbenchmark facilities. I 
+suspect the granularity is big enough that the values are comparable.
+
+For rust, --opt-level=3 was used.
 
 Note that short = 398KB, medium = 1.4MB and large = 5.9MB.
 
-Rust short 13313251 ns/iter (+/- 11342)
+Rust short 12663308 ns/iter (+/- 11342)
 Go short 13620130 ns/iter (100 iterations)
-Rust medium 44827980 ns/iter (+/- 39679)
+Rust medium 42487654 ns/iter (+/- 39679)
 Go medium 45079987 ns/iter (50 iterations)
-Rust large 202532195 ns/iter (+/- 437456)
+Rust large 191634938 ns/iter (+/- 437456)
 Go large 202660744 ns/iter (10 iterations)
 
 You'll note that none of the above benchmarks use a particularly large CSV 
@@ -20,6 +22,6 @@ The huge benchmark for both Rust and Go use buffering. The times are wall
 clock times. The benchmark was run on an SSD. Both use a negligible and 
 constant amount of memory (~1KB).
 
-Rust huge 141 seconds
+Rust huge 133 seconds
 Go huge 157 seconds