Created
January 14, 2020 11:01
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Go 1.14 defer benchmark
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| package bigcache | |
| import "testing" | |
| var sink = 0 | |
| func BenchmarkNotDefered(b *testing.B) { | |
| for n := 0; n < b.N; n++ { | |
| notDefered() | |
| } | |
| b.Log(sink) | |
| } | |
| func BenchmarkDefered(b *testing.B) { | |
| for n := 0; n < b.N; n++ { | |
| defered() | |
| } | |
| b.Log(sink) | |
| } | |
| func defered() { | |
| defer func() { | |
| sink++ | |
| }() | |
| } | |
| func notDefered() { | |
| func() { | |
| sink++ | |
| }() | |
| } |
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| TEXT command-line-arguments.defered(SB) /go/src/github.com/janisz/presentations/bigcache/defer_test.go | |
| defer_test.go:21 0x4f65f0 64488b0c25f8ffffff MOVQ FS:0xfffffff8, CX | |
| defer_test.go:21 0x4f65f9 483b6110 CMPQ 0x10(CX), SP | |
| defer_test.go:21 0x4f65fd 7654 JBE 0x4f6653 | |
| defer_test.go:21 0x4f65ff 4883ec48 SUBQ $0x48, SP | |
| defer_test.go:21 0x4f6603 48896c2440 MOVQ BP, 0x40(SP) | |
| defer_test.go:21 0x4f6608 488d6c2440 LEAQ 0x40(SP), BP | |
| defer_test.go:22 0x4f660d c744240800000000 MOVL $0x0, 0x8(SP) | |
| defer_test.go:22 0x4f6615 488d05dc7c0500 LEAQ 0x57cdc(IP), AX | |
| defer_test.go:22 0x4f661c 4889442420 MOVQ AX, 0x20(SP) | |
| defer_test.go:22 0x4f6621 488d442408 LEAQ 0x8(SP), AX | |
| defer_test.go:22 0x4f6626 48890424 MOVQ AX, 0(SP) | |
| defer_test.go:22 0x4f662a e8b152f3ff CALL runtime.deferprocStack(SB) | |
| defer_test.go:22 0x4f662f 85c0 TESTL AX, AX | |
| defer_test.go:22 0x4f6631 7510 JNE 0x4f6643 | |
| defer_test.go:25 0x4f6633 90 NOPL | |
| defer_test.go:25 0x4f6634 e8c75af3ff CALL runtime.deferreturn(SB) | |
| defer_test.go:25 0x4f6639 488b6c2440 MOVQ 0x40(SP), BP | |
| defer_test.go:25 0x4f663e 4883c448 ADDQ $0x48, SP | |
| defer_test.go:25 0x4f6642 c3 RET | |
| defer_test.go:22 0x4f6643 90 NOPL | |
| defer_test.go:22 0x4f6644 e8b75af3ff CALL runtime.deferreturn(SB) | |
| defer_test.go:22 0x4f6649 488b6c2440 MOVQ 0x40(SP), BP | |
| defer_test.go:22 0x4f664e 4883c448 ADDQ $0x48, SP | |
| defer_test.go:22 0x4f6652 c3 RET | |
| defer_test.go:21 0x4f6653 e83818f6ff CALL runtime.morestack_noctxt(SB) | |
| defer_test.go:21 0x4f6658 eb96 JMP command-line-arguments.defered(SB) | |
| TEXT command-line-arguments.defered.func1(SB) /go/src/github.com/janisz/presentations/bigcache/defer_test.go | |
| defer_test.go:23 0x4f6670 48ff0501a91500 INCQ command-line-arguments.sink(SB) | |
| defer_test.go:24 0x4f6677 c3 RET |
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| TEXT command-line-arguments.defered(SB) /go/src/github.com/janisz/presentations/bigcache/defer_test.go | |
| defer_test.go:21 0x4f9820 64488b0c25f8ffffff MOVQ FS:0xfffffff8, CX | |
| defer_test.go:21 0x4f9829 483b6110 CMPQ 0x10(CX), SP | |
| defer_test.go:21 0x4f982d 764e JBE 0x4f987d | |
| defer_test.go:21 0x4f982f 4883ec18 SUBQ $0x18, SP | |
| defer_test.go:21 0x4f9833 48896c2410 MOVQ BP, 0x10(SP) | |
| defer_test.go:21 0x4f9838 488d6c2410 LEAQ 0x10(SP), BP | |
| defer_test.go:21 0x4f983d 48c7c000000000 MOVQ $0x0, AX | |
| defer_test.go:21 0x4f9844 4889442408 MOVQ AX, 0x8(SP) | |
| defer_test.go:21 0x4f9849 c644240700 MOVB $0x0, 0x7(SP) | |
| defer_test.go:22 0x4f984e 488d0503e80400 LEAQ 0x4e803(IP), AX | |
| defer_test.go:22 0x4f9855 4889442408 MOVQ AX, 0x8(SP) | |
| defer_test.go:25 0x4f985a c644240700 MOVB $0x0, 0x7(SP) | |
| defer_test.go:25 0x4f985f e83c000000 CALL command-line-arguments.defered.func1(SB) | |
| defer_test.go:25 0x4f9864 488b6c2410 MOVQ 0x10(SP), BP | |
| defer_test.go:25 0x4f9869 4883c418 ADDQ $0x18, SP | |
| defer_test.go:25 0x4f986d c3 RET | |
| defer_test.go:25 0x4f986e e81d70f3ff CALL runtime.deferreturn(SB) | |
| defer_test.go:25 0x4f9873 488b6c2410 MOVQ 0x10(SP), BP | |
| defer_test.go:25 0x4f9878 4883c418 ADDQ $0x18, SP | |
| defer_test.go:25 0x4f987c c3 RET | |
| defer_test.go:21 0x4f987d e8be5cf6ff CALL runtime.morestack_noctxt(SB) | |
| defer_test.go:21 0x4f9882 eb9c JMP command-line-arguments.defered(SB) | |
| TEXT command-line-arguments.defered.func1(SB) /go/src/github.com/janisz/presentations/bigcache/defer_test.go | |
| defer_test.go:23 0x4f98a0 48ff05b1681600 INCQ command-line-arguments.sink(SB) | |
| defer_test.go:24 0x4f98a7 c3 RET |
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| benchstat go_version_go1.13.6_linux_amd64.txt go_version_go1.14beta1_linux_amd64.txt | |
| name old time/op new time/op delta | |
| NotDefered 1.31ns ± 4% 1.39ns ± 9% +5.40% (p=0.005 n=10+10) | |
| NotDefered-2 1.28ns ± 0% 1.36ns ± 6% +6.09% (p=0.000 n=7+10) | |
| NotDefered-3 1.28ns ± 0% 1.42ns ± 2% +10.64% (p=0.000 n=8+8) | |
| NotDefered-4 1.28ns ± 0% 1.35ns ± 5% +5.63% (p=0.000 n=6+10) | |
| Defered 32.0ns ± 2% 2.7ns ± 1% -91.66% (p=0.000 n=10+10) | |
| Defered-2 31.6ns ± 0% 2.7ns ± 3% -91.39% (p=0.000 n=10+10) | |
| Defered-3 31.6ns ± 0% 2.7ns ± 1% -91.56% (p=0.000 n=10+8) | |
| Defered-4 31.5ns ± 0% 2.7ns ± 0% -91.51% (p=0.000 n=9+8) |
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