af880809d8
CL 170738 used mmap for writing most of the output file content. This change implements similar functionality for Windows. The output of compilebench -count=5 command before and after this change name old time/op new time/op delta Template 254ms ±14% 239ms ±10% ~ (p=0.222 n=5+5) Unicode 119ms ±14% 113ms ±12% ~ (p=0.421 n=5+5) GoTypes 892ms ±23% 850ms ± 1% ~ (p=0.841 n=5+5) Compiler 3.86s ± 2% 3.82s ± 1% ~ (p=0.222 n=5+5) SSA 12.6s ± 1% 12.6s ± 1% ~ (p=0.095 n=5+5) Flate 162ms ±18% 149ms ± 1% -7.91% (p=0.016 n=5+5) GoParser 199ms ±12% 184ms ± 1% ~ (p=0.056 n=5+5) Reflect 524ms ±13% 507ms ± 3% ~ (p=0.421 n=5+5) Tar 207ms ± 7% 198ms ± 0% -4.58% (p=0.016 n=5+4) XML 305ms ± 6% 299ms ± 5% ~ (p=0.690 n=5+5) LinkCompiler 1.14s ±11% 1.14s ± 3% ~ (p=0.222 n=5+5) ExternalLinkCompiler 2.80s ± 5% 2.92s ±13% ~ (p=0.222 n=5+5) LinkWithoutDebugCompiler 727ms ± 2% 750ms ± 7% ~ (p=0.151 n=5+5) StdCmd 44.0s ± 8% 43.3s ± 2% ~ (p=1.000 n=5+5) name old user-time/op new user-time/op delta Template 300ms ±27% 259ms ±34% ~ (p=0.341 n=5+5) Unicode 134ms ±51% 144ms ±67% ~ (p=0.548 n=5+5) GoTypes 1.05s ±10% 1.03s ± 6% ~ (p=0.968 n=5+5) Compiler 5.01s ± 3% 4.88s ± 3% ~ (p=0.286 n=5+5) SSA 16.8s ± 1% 16.7s ± 1% -0.95% (p=0.008 n=5+5) Flate 178ms ±67% 181ms ±38% ~ (p=0.849 n=5+5) GoParser 231ms ±32% 219ms ±21% ~ (p=0.810 n=5+5) Reflect 634ms ±33% 650ms ± 6% ~ (p=0.135 n=5+5) Tar 219ms ±36% 231ms ±19% ~ (p=0.905 n=5+5) XML 378ms ±20% 366ms ±23% ~ (p=0.913 n=5+5) LinkCompiler 1.34s ±15% 1.32s ±10% ~ (p=0.730 n=5+5) ExternalLinkCompiler 1.22s ±13% 1.18s ±15% ~ (p=0.873 n=5+5) LinkWithoutDebugCompiler 847ms ±13% 841ms ±21% ~ (p=0.667 n=5+5) name old text-bytes new text-bytes delta HelloSize 767kB ± 0% 767kB ± 0% ~ (all equal) CmdGoSize 10.6MB ± 0% 10.6MB ± 0% ~ (all equal) name old data-bytes new data-bytes delta HelloSize 10.1kB ± 0% 10.1kB ± 0% ~ (all equal) CmdGoSize 310kB ± 0% 310kB ± 0% ~ (all equal) name old bss-bytes new bss-bytes delta HelloSize 0.00B 0.00B ~ (all equal) CmdGoSize 0.00B 0.00B ~ (all equal) name old exe-bytes new exe-bytes delta HelloSize 1.10MB ± 0% 1.10MB ± 0% ~ (all equal) CmdGoSize 14.7MB ± 0% 14.7MB ± 0% ~ (all equal) Change-Id: I653f63213b9cc8a4b05f71938e34b5d53b05e3f5 Reviewed-on: https://go-review.googlesource.com/c/go/+/196846 Run-TryBot: Alex Brainman <alex.brainman@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> |
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