3 Commits

Author	SHA1	Message	Date
Nigel Tao	18e86644a3	cmd/gc: cache itab lookup in convT2I. ... There may be further savings if convT2I can avoid the function call if the cache is good and T is uintptr-shaped, a la convT2E, but that will be a follow-up CL. src/pkg/runtime: benchmark old ns/op new ns/op delta BenchmarkConvT2ISmall 43 15 -64.01% BenchmarkConvT2IUintptr 45 14 -67.48% BenchmarkConvT2ILarge 130 101 -22.31% test/bench/go1: benchmark old ns/op new ns/op delta BenchmarkBinaryTree17 8588997000 8499058000 -1.05% BenchmarkFannkuch11 5300392000 5358093000 +1.09% BenchmarkGobDecode 30295580 31040190 +2.46% BenchmarkGobEncode 18102070 17675650 -2.36% BenchmarkGzip 774191400 771591400 -0.34% BenchmarkGunzip 245915100 247464100 +0.63% BenchmarkJSONEncode 123577000 121423050 -1.74% BenchmarkJSONDecode 451969800 596256200 +31.92% BenchmarkMandelbrot200 10060050 10072880 +0.13% BenchmarkParse 10989840 11037710 +0.44% BenchmarkRevcomp 1782666000 1716864000 -3.69% BenchmarkTemplate 798286600 723234400 -9.40% R=rsc, bradfitz, go.peter.90, daniel.morsing, dave, uriel CC=golang-dev https://golang.org/cl/6337058	2012-07-03 09:09:05 +10:00
Nigel Tao	8f84328fdc	cmd/gc: inline convT2E when T is uintptr-shaped. ... GOARCH=amd64 benchmarks src/pkg/runtime benchmark old ns/op new ns/op delta BenchmarkConvT2ESmall 10 10 +1.00% BenchmarkConvT2EUintptr 9 0 -92.07% BenchmarkConvT2EBig 74 74 -0.27% BenchmarkConvT2I 27 26 -3.62% BenchmarkConvI2E 4 4 -7.05% BenchmarkConvI2I 20 19 -2.99% test/bench/go1 benchmark old ns/op new ns/op delta BenchmarkBinaryTree17 5930908000 5937260000 +0.11% BenchmarkFannkuch11 3927057000 3933556000 +0.17% BenchmarkGobDecode 21998090 21870620 -0.58% BenchmarkGobEncode 12725310 12734480 +0.07% BenchmarkGzip 567617600 567892800 +0.05% BenchmarkGunzip 178284100 178706900 +0.24% BenchmarkJSONEncode 87693550 86794300 -1.03% BenchmarkJSONDecode 314212600 324115000 +3.15% BenchmarkMandelbrot200 7016640 7073766 +0.81% BenchmarkParse 7852100 7892085 +0.51% BenchmarkRevcomp 1285663000 1286147000 +0.04% BenchmarkTemplate 566823800 567606200 +0.14% I'm not entirely sure why the JSON* numbers have changed, but eyeballing the profile suggests that it could be spending less and more time in runtime.{new,old}stack, so it could simply be stack-split boundary noise. R=rsc, dave, bsiegert, dsymonds CC=golang-dev https://golang.org/cl/6280049	2012-06-14 10:43:20 +10:00
Dave Cheney	d8e9b04ca6	runtime: add interface microbenchmarks ... 2011 Mac Mini, Core i5 @ 2.3Ghz BenchmarkConvT2E 50000000 40.4 ns/op BenchmarkConvT2EBig 20000000 107 ns/op BenchmarkConvT2I 100000000 28.9 ns/op BenchmarkConvI2E 500000000 5.93 ns/op BenchmarkConvI2I 100000000 19.0 ns/op BenchmarkAssertE2T 100000000 14.1 ns/op BenchmarkAssertE2TBig 100000000 17.8 ns/op BenchmarkAssertE2I 100000000 21.3 ns/op BenchmarkAssertI2T 100000000 14.3 ns/op BenchmarkAssertI2I 100000000 20.8 ns/op BenchmarkAssertI2E 500000000 5.58 ns/op Pandaboard, 2 x Omap4 @ 1.2Ghz BenchmarkConvT2E 10000000 215 ns/op BenchmarkConvT2EBig 1000000 3697 ns/op BenchmarkConvT2I 5000000 666 ns/op BenchmarkConvI2E 50000000 42.4 ns/op BenchmarkConvI2I 5000000 489 ns/op BenchmarkAssertE2T 20000000 90.0 ns/op BenchmarkAssertE2TBig 20000000 91.6 ns/op BenchmarkAssertE2I 5000000 515 ns/op BenchmarkAssertI2T 20000000 124 ns/op BenchmarkAssertI2I 5000000 517 ns/op BenchmarkAssertI2E 50000000 47.2 ns/op BenchmarkAssertE2E 50000000 42.7 ns/op R=minux.ma, rsc, fullung, bsiegert, dsymonds CC=golang-dev https://golang.org/cl/5777048	2012-04-11 22:45:44 +10:00