From 928b0be51a7055929c0e271c1a3c4369a2a123d3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felix=20Geisend=C3=B6rfer?= <felix@datadoghq.com>
Date: Sat, 9 Jan 2021 18:42:50 +0100
Subject: [PATCH] Add cpu bench test

---
 examples/cpu/benchmark.cpu.pb.gz | Bin 0 -> 1173 bytes
 examples/cpu/main.go             |  30 +++++++++++++++++-------------
 examples/cpu/main_test.go        |   9 +++++++++
 3 files changed, 26 insertions(+), 13 deletions(-)
 create mode 100644 examples/cpu/benchmark.cpu.pb.gz
 create mode 100644 examples/cpu/main_test.go

diff --git a/examples/cpu/benchmark.cpu.pb.gz b/examples/cpu/benchmark.cpu.pb.gz
new file mode 100644
index 0000000000000000000000000000000000000000..5e163f16f74f2df07f90880d50bc054df674e158
GIT binary patch
literal 1173
zcmV;G1Zw*qiwFP!00004|Fn}!j1*NAhOO?Z?%UN<U1z#ydd>{5q8MI7sA5V$jiL!`
zTp2cQbTQOa-|6X4k4{xrgk2|UK%(-9VuF}xl&FakNMNB5g~(<W7&nSxVWMtKSolaZ
zQKK>U-nk6z%3iqZsqg;(`Ojk>zjo{Qb4y3x`=F_-M1g{?k|L=4-#>o(Ywaoi`#}H0
z?^N3)3Lbmz`-;t8?Eqzl5Ct^Utdeb#0$zNcqXH0)3Q)$fMQk8NJa+9mu{BbJPZiFJ
zP{E3&+dx!Yy2+Ue*9)AfP{pdH*9}mif9ZvWt}2BhE3V-eviMF=>IN9lU;2BGu4;mp
z@XhmQiLDY1%G^nV5gf4$+azVYAf+BC^%@kQfBQy7*GgrfC3yMX2L=?Of8^bot`fm3
zcw6#aytW4YZ|_X#YDI7zPfEUHfa`)+@f*n<&MVM=_176)tqMMZe>}^lr+~}3?0rOV
z1OFQ2GM^!M4ev-U{FfV4Yl55jnXE5nC;d&q0e_QvQD5po@KO9q>P7zq`ahi7q^qNX
z*YPFE@8|hT(0}>!)w)_|97qFi9Xm~Ijg;VQfiI^7HLO{t-6Ugp>c&a7w=y(rjS#pz
z&0mxO5UkM|LI~8cZZ&Km<9Ouiabjzv0<To~s|t+a7-vm9_c3QW{47pThjARY8g&E8
z(7$qFy{<OK#+$ZDCh($+%kIIr+wKI5YZAn_B%kH&D8T*$bQJ}k#CIeg)K3aNg*PQ1
z9QTyqtMJFcam#aBCHQK5P3pxt$#tw2d<}jixu`G4y+-i0cvW(-4(Y#E@O5}ba?zhW
zhjoHmcwTbhFZGt->+zSt{4(Eq!EO9f>RJCaIX|srvj;#n;7>>SJyhXHf$y;jO>A1G
z4P+W$WcR=>;nFmpzD&1ans09-_NBX+j@<4>W^R&A_=e=7JDF}1<4v*|Z=5`_a&RMX
zs=*_Szywb4Q`&;3FPtE@Mhy6Kj57lek+ZFM^$KS-c)Q724JL7tvl%?I^g7d-@JWF)
z6Q*#=T6NC|8k@Ilov}@_4X?<QY{vJ@Xj`GEPN_tBQ1R~b%9$T^Lz;P7kmPaCD+b-%
ztHyquWHd<PR^~m_?(`P(c_&CBcY%hTLv8A|lkMF!S?Gi`-5w`Bnz{6lA2A;{=;lt4
zMBThcy{FwLGn!^DmpN_P$!Oe4Xu3dCx1G3I8o2FY&E3fF#7;Z$_6;p{_R=_5jQsTA
zoJ@G&|4KO5qgju|9A!T`aogE4vv;eL=J6BWBW|9hZkPmq=<cIo=<{jJI<vc+-EP>K
zr-x|3hqEko=VfkY*jWB53`0MUgGFyF&EsAtqK=;(j)VOvrBS!%J@#J<EvwzG5YG8g
zYxhnk^G26}!w#a?iRi4iXIRhda5mTS(`Uri;NOnkqr)1q9CLB9;2)%H9yRHh9nPX8
z_8u74ubU<TGcu)7l=b|yH@o62KCJwmXCbBCm7y<m;#Qi+u|FTul@7CDk+$-XuIRe#
n^dir=TPX0u(0h2;z<w6Z`B7{4PAB^(00960FxeqMTnPXG?Jiq$

literal 0
HcmV?d00001

diff --git a/examples/cpu/main.go b/examples/cpu/main.go
index f0bb8c7..054d33a 100644
--- a/examples/cpu/main.go
+++ b/examples/cpu/main.go
@@ -28,25 +28,29 @@ func run() error {
 		return http.ListenAndServe(addr, nil)
 	})
 
-	g.Go(func() error { return computeSum(1000000, 10*time.Millisecond) })
+	g.Go(func() error { return computeSleepLoop(1000000, 10*time.Millisecond) })
 
 	return g.Wait()
 }
 
-func computeSum(to int, sleep time.Duration) error {
+func computeSleepLoop(n int, sleep time.Duration) error {
 	for {
-		var sum int64
-		for i := 0; i < to; i++ {
-			sum += int64(i) / 2
-			sum += int64(i) / 3
-			sum += int64(i) / 4
-			sum += int64(i) / 5
-			sum += int64(i) / 6
-			sum += int64(i) / 7
-			sum += int64(i) / 8
-		}
+		compute(n)
 		time.Sleep(sleep)
 	}
-
 	return nil
 }
+
+func compute(n int) int64 {
+	var sum int64
+	for i := 0; i < n; i++ {
+		sum += int64(i) / 2
+		sum += int64(i) / 3
+		sum += int64(i) / 4
+		sum += int64(i) / 5
+		sum += int64(i) / 6
+		sum += int64(i) / 7
+		sum += int64(i) / 8
+	}
+	return sum
+}
diff --git a/examples/cpu/main_test.go b/examples/cpu/main_test.go
new file mode 100644
index 0000000..06e5c81
--- /dev/null
+++ b/examples/cpu/main_test.go
@@ -0,0 +1,9 @@
+package main
+
+import (
+	"testing"
+)
+
+func Benchmark_compute(b *testing.B) {
+	compute(b.N)
+}