1. 03 Mar, 2011 4 commits
  2. 02 Mar, 2011 11 commits
  3. 01 Mar, 2011 9 commits
  4. 28 Feb, 2011 7 commits
  5. 26 Feb, 2011 1 commit
    • Nigel Tao's avatar
      compress/lzw: don't use a closure in NewReader, which avoids having · fdbbb066
      Nigel Tao authored
      to move some variables from the stack to the heap.
      
      Sorted benchmark runs on my 2007-era Mac Mini (GOARCH=amd64, GOOS=linux):
      
      Before:
      lzw.BenchmarkDecoder        2000        878176 ns/op
      lzw.BenchmarkDecoder        2000        878415 ns/op
      lzw.BenchmarkDecoder        2000        880352 ns/op
      lzw.BenchmarkDecoder        2000        898445 ns/op
      lzw.BenchmarkDecoder        2000        901728 ns/op
      
      After:
      lzw.BenchmarkDecoder        2000        859065 ns/op
      lzw.BenchmarkDecoder        2000        859402 ns/op
      lzw.BenchmarkDecoder        2000        860035 ns/op
      lzw.BenchmarkDecoder        2000        860555 ns/op
      lzw.BenchmarkDecoder        2000        861109 ns/op
      
      The ratio of before/after median times is 1.024.
      
      The runtime.MemStats.Mallocs delta per loop drops from 109 to 104.
      
      R=r, r2, dfc
      CC=golang-dev
      https://golang.org/cl/4253043
      fdbbb066
  6. 25 Feb, 2011 8 commits