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mirror of https://github.com/golang/go synced 2024-11-17 23:14:49 -07:00
go/test
Carlo Alberto Ferraris 4c3f26076b sync: allow inlining the Mutex.Unlock fast path
Make use of the newly-enabled limited midstack inlining.
Similar changes will be done in followup CLs.

name                    old time/op  new time/op  delta
MutexUncontended        19.3ns ± 1%  18.9ns ± 0%   -1.92%  (p=0.000 n=20+19)
MutexUncontended-4      5.24ns ± 0%  4.75ns ± 1%   -9.25%  (p=0.000 n=20+20)
MutexUncontended-16     2.10ns ± 0%  2.05ns ± 0%   -2.38%  (p=0.000 n=15+19)
Mutex                   19.6ns ± 0%  19.3ns ± 1%   -1.92%  (p=0.000 n=20+17)
Mutex-4                 54.6ns ± 5%  52.4ns ± 4%   -4.09%  (p=0.000 n=20+20)
Mutex-16                 133ns ± 5%   139ns ± 2%   +4.23%  (p=0.000 n=20+16)
MutexSlack              33.4ns ± 2%  18.9ns ± 1%  -43.56%  (p=0.000 n=19+20)
MutexSlack-4             206ns ± 5%   225ns ± 8%   +9.12%  (p=0.000 n=20+18)
MutexSlack-16           89.4ns ± 1%  98.4ns ± 1%  +10.10%  (p=0.000 n=18+17)
MutexWork               60.5ns ± 0%  58.2ns ± 3%   -3.75%  (p=0.000 n=12+20)
MutexWork-4              105ns ± 5%   103ns ± 7%   -1.68%  (p=0.007 n=20+20)
MutexWork-16             157ns ± 1%   163ns ± 2%   +3.90%  (p=0.000 n=18+18)
MutexWorkSlack          70.2ns ± 5%  57.7ns ± 1%  -17.81%  (p=0.000 n=19+20)
MutexWorkSlack-4         277ns ±13%   276ns ±13%     ~     (p=0.682 n=20+19)
MutexWorkSlack-16        156ns ± 0%   147ns ± 0%   -5.62%  (p=0.000 n=16+14)
MutexNoSpin              966ns ± 0%   968ns ± 0%   +0.11%  (p=0.029 n=15+20)
MutexNoSpin-4            269ns ± 4%   270ns ± 2%     ~     (p=0.807 n=20+19)
MutexNoSpin-16           122ns ± 0%   120ns ± 4%   -1.63%  (p=0.000 n=19+19)
MutexSpin               3.13µs ± 0%  3.13µs ± 1%   +0.16%  (p=0.004 n=18+20)
MutexSpin-4              826ns ± 1%   832ns ± 2%   +0.74%  (p=0.000 n=19+16)
MutexSpin-16             397ns ± 1%   395ns ± 0%   -0.50%  (p=0.000 n=19+17)
RWMutexUncontended      71.4ns ± 0%  69.5ns ± 0%   -2.72%  (p=0.000 n=16+20)
RWMutexUncontended-4    18.4ns ± 4%  17.5ns ± 0%   -4.92%  (p=0.000 n=20+18)
RWMutexUncontended-16   8.01ns ± 0%  7.92ns ± 0%   -1.15%  (p=0.000 n=18+18)
RWMutexWrite100         24.9ns ± 0%  24.9ns ± 1%     ~     (p=0.099 n=19+20)
RWMutexWrite100-4       46.5ns ± 3%  46.2ns ± 4%     ~     (p=0.253 n=17+19)
RWMutexWrite100-16      68.9ns ± 3%  69.9ns ± 5%   +1.46%  (p=0.012 n=18+20)
RWMutexWrite10          27.1ns ± 0%  27.0ns ± 2%     ~     (p=0.128 n=17+20)
RWMutexWrite10-4        34.8ns ± 1%  34.7ns ± 2%     ~     (p=0.180 n=20+18)
RWMutexWrite10-16       37.5ns ± 2%  37.2ns ± 4%   -0.89%  (p=0.023 n=20+20)
RWMutexWorkWrite100      164ns ± 0%   164ns ± 0%     ~     (p=0.106 n=12+20)
RWMutexWorkWrite100-4    186ns ± 3%   193ns ± 3%   +3.46%  (p=0.000 n=20+20)
RWMutexWorkWrite100-16   204ns ± 2%   210ns ± 3%   +2.96%  (p=0.000 n=18+20)
RWMutexWorkWrite10       153ns ± 0%   153ns ± 0%   -0.20%  (p=0.017 n=20+19)
RWMutexWorkWrite10-4     179ns ± 1%   178ns ± 2%     ~     (p=0.215 n=19+20)
RWMutexWorkWrite10-16    191ns ± 1%   192ns ± 2%     ~     (p=0.166 n=15+19)

linux/amd64 bin/go 14630572 (previous commit 14605947, +24625/+0.17%)

Change-Id: I3f9d1765801fe0b8deb1bc2728b8bba8a7508e23
Reviewed-on: https://go-review.googlesource.com/c/go/+/148958
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2019-03-05 14:59:31 +00:00
..
alias3.dir
bench
chan test/chan: fix broken link to Squinting at Power Series 2019-02-06 20:54:16 +00:00
closure3.dir cmd/compile: encourage inlining of functions with single-call bodies 2018-11-08 17:29:23 +00:00
codegen cmd/compile: optimize math/bits.Div32 for arm64 2019-03-03 20:20:10 +00:00
ddd2.dir
dwarf
fixedbugs cmd/compile: make KeepAlive work on stack object 2019-03-01 15:36:52 +00:00
import2.dir
import4.dir
interface
intrinsic.dir
ken
linkname.dir
method4.dir
retjmp.dir
stress
syntax
uintptrescapes.dir
64bit.go
235.go
alg.go
alias1.go
alias2.go
alias3.go
alias.go
align.go
append1.go
append.go
args.go
armimm.go
assign1.go
assign.go
atomicload.go
bigalg.go
bigmap.go
blank1.go
blank.go
bom.go
bombad.go
bounds.go
chancap.go runtime: handle 64bits addresses for AIX 2018-11-26 14:06:28 +00:00
chanlinear.go
char_lit1.go
char_lit.go
checkbce.go
clearfat.go
closedchan.go
closure1.go
closure2.go
closure3.go
closure4.go
closure.go
cmp6.go
cmp.go
cmplx.go Revert "cmd/compile: rewrite f(g()) for multi-value g() during typecheck" 2019-03-01 05:58:51 +00:00
cmplxdivide1.go
cmplxdivide.c
cmplxdivide.go
complit1.go
complit.go
compos.go
const1.go
const2.go
const3.go
const4.go
const5.go
const6.go
const.go
convert1.go
convert2.go
convert3.go
convert.go
convlit1.go
convlit.go
convT2X.go
copy1.go Revert "cmd/compile: rewrite f(g()) for multi-value g() during typecheck" 2019-03-01 05:58:51 +00:00
copy.go
crlf.go
ddd1.go
ddd2.go
ddd.go
decl.go
declbad.go
defer.go
deferfin.go
deferprint.go
deferprint.out
devirt.go
divide.go
divmod.go
empty.go
env.go
eof1.go
eof.go
escape2.go
escape2n.go
escape3.go
escape4.go
escape5.go cmd/compile: fix unnamed parameter handling in escape analysis 2018-12-04 23:01:00 +00:00
escape_array.go
escape_because.go cmd/compile: flow interface data to heap if CONVIFACE of a non-direct interface escapes 2019-02-21 15:14:45 +00:00
escape_calls.go
escape_closure.go
escape_field.go
escape_iface.go
escape_indir.go
escape_level.go
escape_map.go
escape_param.go cmd/compile: flow interface data to heap if CONVIFACE of a non-direct interface escapes 2019-02-21 15:14:45 +00:00
escape_slice.go
escape_struct_param1.go
escape_struct_param2.go
escape_struct_return.go
escape.go
fibo.go
finprofiled.go
float_lit2.go
float_lit3.go
float_lit.go
floatcmp.go
for.go
func1.go
func2.go
func3.go
func4.go
func5.go
func6.go
func7.go
func8.go
func.go
funcdup2.go
funcdup.go
gc1.go
gc2.go
gc.go
gcgort.go
gcstring.go
goprint.go
goprint.out
goto.go
heapsampling.go
helloworld.go
helloworld.out
if.go
import1.go
import2.go
import4.go
import5.go
import6.go
import.go
index0.go
index1.go
index2.go
index.go
indirect1.go
indirect.go
init1.go
init.go
initcomma.go
initialize.go
initializerr.go
initloop.go
inline_big.go
inline_caller.go runtime: make FuncForPC return the innermost inlined frame 2019-01-08 21:54:04 +00:00
inline_callers.go runtime: make FuncForPC return the innermost inlined frame 2019-01-08 21:54:04 +00:00
inline_literal.go
inline_math_bits_rotate.go
inline_sync.go sync: allow inlining the Mutex.Unlock fast path 2019-03-05 14:59:31 +00:00
inline_variadic.go
inline.go cmd/compile: encourage inlining of functions with single-call bodies 2018-11-08 17:29:23 +00:00
int_lit.go
intcvt.go
intrinsic_atomic.go
intrinsic.go
iota.go
label1.go
label.go
linkmain_run.go
linkmain.go
linkname.go
linkobj.go
linkx_run.go
linkx.go
literal2.go cmd/compile: accept 'i' suffix orthogonally on all numbers 2019-02-19 22:45:09 +00:00
literal.go
live1.go
live2.go
live_syscall.go cmd/compile: encourage inlining of functions with single-call bodies 2018-11-08 17:29:23 +00:00
live.go
locklinear.go
loopbce.go cmd/compile: check for negative upper bound to IsSliceInBounds 2018-12-07 23:04:58 +00:00
makechan.go
makemap.go
makenew.go
mallocfin.go
map1.go
map.go
mapclear.go
maplinear.go
mergemul.go
method1.go
method2.go
method3.go
method4.go
method5.go
method6.go
method7.go
method.go
named1.go
named.go
nil.go
nilcheck.go
nilptr2.go
nilptr3.go cmd/compile: fix nilcheck for AIX 2018-11-26 14:13:53 +00:00
nilptr4.go
nilptr5_aix.go test: fix nilptr5 for AIX 2018-11-27 15:36:08 +00:00
nilptr5_wasm.go cmd/compile: fix nilcheck for AIX 2018-11-26 14:13:53 +00:00
nilptr5.go cmd/compile: fix nilcheck for AIX 2018-11-26 14:13:53 +00:00
nilptr_aix.go cmd/compile: fix nilcheck for AIX 2018-11-26 14:13:53 +00:00
nilptr.go cmd/compile: fix nilcheck for AIX 2018-11-26 14:13:53 +00:00
nosplit.go test: add a go.mod file in the working directory of nosplit.go 2019-02-26 02:44:45 +00:00
notinheap2.go
notinheap3.go cmd/compile: omit write barriers for slice clears of go:notinheap pointers 2018-12-05 21:54:54 +00:00
notinheap.go cmd/compile: disallow converting string to notinheap slice 2018-11-02 19:53:59 +00:00
nowritebarrier.go
nul1.go
opt_branchlikely.go
parentype.go
peano.go
phiopt.go
print.go
print.out
printbig.go
printbig.out
prove.go cmd/compile: fix deriving from x+d >= w on overflow in prove pass 2019-01-02 19:28:06 +00:00
range.go
README.md
recover1.go
recover2.go
recover3.go
recover4.go
recover5.go
recover.go
reflectmethod1.go
reflectmethod2.go
reflectmethod3.go
reflectmethod4.go
rename1.go
rename.go
reorder2.go
reorder.go
retjmp.go
return.go
rotate0.go
rotate1.go
rotate2.go
rotate3.go
rotate.go
run.go cmd/compile: use innermost line number for -S 2018-12-11 20:24:45 +00:00
rune.go
runtime.go
shift1.go
shift2.go
sieve.go
sigchld.go
sigchld.out
simassign.go
sinit_run.go
sinit.go cmd/compile: fix static initializer 2018-12-03 16:48:21 +00:00
sizeof.go
slice3.go
slice3err.go
slicecap.go
sliceopt.go
solitaire.go
stack.go
stackobj2.go
stackobj3.go
stackobj.go
strcopy.go
strength.go
string_lit.go
stringrange.go
struct0.go
switch2.go
switch3.go
switch4.go
switch5.go Revert "fmt: fix incorrect format of whole-number floats when using %#v" 2018-10-16 21:54:35 +00:00
switch6.go
switch7.go
switch.go
tinyfin.go
torture.go
turing.go
typecheck.go
typecheckloop.go
typeswitch1.go
typeswitch2.go
typeswitch3.go
typeswitch.go
uintptrescapes2.go
uintptrescapes.go
undef.go
utf.go
varerr.go
varinit.go
writebarrier.go cmd/compile: eliminate write barriers when writing non-heap ptrs 2018-11-29 22:23:02 +00:00
zerodivide.go

The test directory contains tests of the Go tool chain and runtime. It includes black box tests, regression tests, and error output tests. They are run as part of all.bash.

To run just these tests, execute:

../bin/go run run.go

Standard library tests should be written as regular Go tests in the appropriate package.

The tool chain and runtime also have regular Go tests in their packages. The main reasons to add a new test to this directory are:

  • it is most naturally expressed using the test runner; or
  • it is also applicable to gccgo and other Go tool chains.