ctx_clock

Ctx_clock is a simple test program to measure the context switch time in clock cycles.

To run this test with the Phoronix Test Suite, the basic command is: phoronix-test-suite benchmark ctx-clock.

Project Site

gist.github.com

Test Created

18 February 2019

Test Maintainer

Michael Larabel

Test Type

System

Average Install Time

2 Seconds

Average Run Time

26 Seconds

Test Dependencies

C/C++ Compiler Toolchain

Accolades

30k+ Downloads

Supported Platforms

* Uploading of benchmark result data to OpenBenchmarking.org is always optional (opt-in) via the Phoronix Test Suite for users wishing to share their results publicly.
** Data based on those opting to upload their test results to OpenBenchmarking.org and users enabling the opt-in anonymous statistics reporting while running benchmarks from an Internet-connected platform.
*** Test profile page view reporting began March 2021.
Data updated weekly as of 22 November 2023.

Revision History

pts/ctx-clock-1.0.0 [View Source] Mon, 18 Feb 2019 12:05:15 GMT
Initial commit of basic test that measures the context switch time.

Suites Using This Test

Common Kernel Benchmarks

CPU Massive

Server CPU Tests

Performance Metrics

Analyze Test Configuration:

ctx_clock

Context Switch Time

OpenBenchmarking.org metrics for this test profile configuration based on 4,619 public results since 18 February 2019 with the latest data as of 27 November 2023.

Below is an overview of the generalized performance for components where there is sufficient statistically significant data based upon user-uploaded results. It is important to keep in mind particularly in the Linux/open-source space there can be vastly different OS configurations, with this overview intended to offer just general guidance as to the performance expectations.

Component

Percentile Rank

# Compatible Public Results

Clocks (Average)

Intel Core i5-1035G1

100th

68 ^{+/- 2}

Intel Core i7-1065G7

100th

81 ^{+/- 2}

Intel Core i7-10710U

100th

88 ^{+/- 12}

AMD Ryzen 7 PRO 4750U

100th

89 ^{+/- 9}

AMD Ryzen 7 PRO 5850U

99th

92 ^{+/- 9}

AMD Ryzen 7 4700U

98th

100

Intel Core i9-10885H

98th

104 ^{+/- 15}

Intel Core i7-10510U

98th

105 ^{+/- 13}

AMD EPYC 7713 64-Core

97th

112 ^{+/- 10}

2 x AMD EPYC 7713 64-Core

97th

115 ^{+/- 9}

Intel Xeon Gold 5220R

96th

117 ^{+/- 6}

AMD Ryzen 5 4500U

96th

118

AMD EPYC 7702 64-Core

96th

120

AMD EPYC 7662 64-Core

96th

120

2 x AMD EPYC 7663 56-Core

96th

120

Intel Xeon Gold 5218

94th

122 ^{+/- 4}

AMD Ryzen 5 3550H

93rd

126

Intel Core i9-10980XE

92nd

128 ^{+/- 17}

2 x Intel Xeon Platinum 8490H

92nd

129 ^{+/- 1}

2 x AMD EPYC 7773X 64-Core

92nd

130 ^{+/- 7}

2 x Intel Xeon Silver 4208

91st

131 ^{+/- 1}

AMD EPYC 7773X 64-Core

90th

132

Intel Core i9-13900K

90th

132 ^{+/- 9}

Intel Xeon Silver 4216

90th

132 ^{+/- 4}

Intel Core i5-13400

88th

134 ^{+/- 1}

Intel Core i7-10850H

88th

134 ^{+/- 1}

AMD EPYC 7552 48-Core

88th

135 ^{+/- 3}

2 x Intel Xeon Platinum 8280

85th

137 ^{+/- 11}

Intel Core i5-12400

85th

138 ^{+/- 4}

2 x AMD EPYC 7642 48-Core

85th

138

Intel Core i7-12700H

85th

138 ^{+/- 11}

Intel Xeon Platinum 8280

85th

138 ^{+/- 7}

2 x AMD EPYC 7601 32-Core

85th

138 ^{+/- 12}

2 x AMD EPYC 7352 24-Core

85th

138

AMD EPYC 7642 48-Core

84th

139 ^{+/- 1}

Intel Xeon Silver 4214R

84th

140 ^{+/- 4}

AMD EPYC 7401P 24-Core

84th

140

Intel Xeon Gold 6258R

84th

140 ^{+/- 6}

2 x AMD EPYC 7742 64-Core

84th

140 ^{+/- 18}

AMD EPYC 7551 32-Core

84th

140

2 x AMD EPYC 7452 32-Core

83rd

141

AMD EPYC 7452 32-Core

82nd

143 ^{+/- 1}

AMD EPYC 7532 32-Core

82nd

144

AMD EPYC 7601 32-Core

82nd

144 ^{+/- 12}

Intel Core i9-14900K

81st

145 ^{+/- 9}

2 x Intel Xeon Silver 4214

80th

146 ^{+/- 7}

AMD Ryzen 9 5950X 16-Core

80th

146 ^{+/- 20}

AMD EPYC 7763 64-Core

79th

147 ^{+/- 4}

AMD Ryzen Threadripper 3990X 64-Core

78th

148 ^{+/- 20}

AMD EPYC 7502 32-Core

76th

150

2 x AMD EPYC 7763 64-Core

76th

150 ^{+/- 13}

AMD EPYC 7502P 32-Core

76th

150

AMD Ryzen Threadripper 2990WX 32-Core

76th

150

Intel Core i9-10900K

76th

150 ^{+/- 7}

Intel Xeon E-2288G

76th

150 ^{+/- 4}

Mid-Tier

75th

> 150

2 x AMD EPYC 9654 96-Core

74th

151 ^{+/- 10}

AMD EPYC 75F3 32-Core

72nd

153 ^{+/- 7}

2 x Intel Xeon Gold 6254

72nd

153 ^{+/- 3}

2 x AMD EPYC 7371 16-Core

71st

155

Intel Core i7-1185G7

71st

155 ^{+/- 2}

AMD Ryzen 7 3800XT 8-Core

71st

156

2 x AMD EPYC 75F3 32-Core

70th

157 ^{+/- 13}

AMD EPYC 7352 24-Core

70th

157 ^{+/- 9}

AMD Ryzen 5 5600X 6-Core

70th

158 ^{+/- 17}

Intel Core i7-11700K

70th

158 ^{+/- 2}

2 x AMD EPYC 7543 32-Core

69th

159 ^{+/- 16}

Intel Core i9-9900KS

69th

160 ^{+/- 3}

Intel Core i9-11900K

69th

160 ^{+/- 12}

2 x Intel Xeon Silver 4215R

69th

160 ^{+/- 2}

Intel Xeon Gold 6226R

68th

162 ^{+/- 18}

Intel Xeon Silver 4215R

67th

164 ^{+/- 4}

Intel Xeon Gold 5217

67th

167 ^{+/- 4}

AMD Ryzen 9 7950X3D 16-Core

67th

167 ^{+/- 2}

AMD Ryzen 7 5800X 8-Core

67th

167 ^{+/- 20}

AMD EPYC 7402P 24-Core

66th

168

Intel Core i5-3380M

66th

168

2 x AMD EPYC 7313 16-Core

64th

170 ^{+/- 17}

2 x AMD EPYC 74F3 24-Core

63rd

173 ^{+/- 9}

Intel Core i5-13600K

63rd

173 ^{+/- 10}

Intel Core i5-10600K

63rd

174 ^{+/- 5}

Intel Xeon Gold 6210U

63rd

174 ^{+/- 1}

AMD EPYC 7542 32-Core

63rd

174

AMD EPYC 7F52 16-Core

62nd

175

AMD EPYC 7351P 16-Core

62nd

175 ^{+/- 18}

AMD Ryzen 9 7900X3D 12-Core

61st

176

AMD EPYC 3255 8-Core Temp

61st

176 ^{+/- 3}

AMD Ryzen 5 1600 Six-Core

61st

176 ^{+/- 24}

Intel Core i3-10100

61st

176 ^{+/- 3}

AMD Ryzen 7 5800X3D 8-Core

61st

177 ^{+/- 15}

AMD Ryzen Threadripper 2950X 16-Core

61st

178 ^{+/- 7}

Intel Core i5-11600K

61st

178 ^{+/- 4}

AMD Ryzen 5 3600XT 6-Core

61st

178 ^{+/- 15}

AMD Ryzen 7 1700X Eight-Core

61st

179 ^{+/- 17}

AMD Ryzen 7 7800X3D 8-Core

61st

179 ^{+/- 21}

AMD Ryzen 5 1600X Six-Core

61st

180

AMD EPYC 74F3 24-Core

61st

180 ^{+/- 13}

AMD Ryzen 7 7700X 8-Core

61st

180

AMD Ryzen Threadripper PRO 5975WX 32-Cores

61st

180

Intel Core i5-12600K

58th

182 ^{+/- 11}

AMD EPYC 7F72 24-Core

57th

184 ^{+/- 15}

AMD Ryzen Threadripper PRO 3955WX 16-Cores

57th

184 ^{+/- 17}

AMD EPYC 7F32 8-Core

57th

185

2 x AMD EPYC 72F3 8-Core

57th

185

AMD EPYC 72F3 8-Core

57th

185

AMD Ryzen 5 5600G

55th

186 ^{+/- 17}

2 x AMD EPYC 7F72 24-Core

55th

186 ^{+/- 15}

2 x AMD EPYC 9554 64-Core

55th

187 ^{+/- 1}

AMD Ryzen 5 7600X 6-Core

55th

188

AMD Ryzen 3 1200

54th

189 ^{+/- 6}

AMD EPYC 73F3 16-Core

54th

189 ^{+/- 12}

2 x AMD EPYC 7252 8-Core

54th

189 ^{+/- 6}

AMD Ryzen Threadripper PRO 5965WX 24-Cores

54th

190

AMD Ryzen 3 3300X 4-Core

54th

190

AMD EPYC 7543 32-Core

54th

190 ^{+/- 23}

AMD EPYC 7302P 16-Core

53rd

191 ^{+/- 28}

AMD EPYC 7262 8-Core

53rd

192

2 x AMD EPYC 7262 8-Core

53rd

192

AMD Ryzen 3 3200G

52nd

194 ^{+/- 19}

Intel Core i3-10105

52nd

196 ^{+/- 6}

AMD EPYC 7282 16-Core

52nd

196 ^{+/- 1}

AMD Ryzen 3 2200G

51st

198 ^{+/- 15}

2 x AMD EPYC 73F3 16-Core

51st

198 ^{+/- 20}

Median

50th

200

Intel Xeon W-2295

50th

201 ^{+/- 1}

Intel Xeon W-1370P

50th

202 ^{+/- 28}

AMD EPYC 7272 12-Core

50th

203 ^{+/- 1}

Intel Celeron G5900

49th

206 ^{+/- 5}

AMD EPYC 7232P 8-Core

49th

208 ^{+/- 15}

Intel Pentium Gold G6400

49th

208 ^{+/- 1}

2 x Intel $0000%

48th

216 ^{+/- 8}

AMD EPYC 7551P 32-Core

46th

229 ^{+/- 20}

Intel Celeron G6900

44th

251

2 x AMD EPYC 7H12 64-Core

38th

338

2 x Intel Xeon Gold 5222

38th

343 ^{+/- 32}

Intel Atom P5362

37th

358 ^{+/- 1}

AMD A10-7870K Radeon R7 12 Compute Cores 4C

34th

436 ^{+/- 21}

AMD FX-8370E Eight-Core

31st

533 ^{+/- 2}

2 x Intel Xeon L5640

29th

561 ^{+/- 31}

2 x Intel Xeon E5-2450L 0

28th

584 ^{+/- 7}

Low-Tier

25th

> 627

2 x Intel Xeon E5-2670 0

25th

633 ^{+/- 6}

2 x Intel Xeon X5670

24th

645 ^{+/- 58}

4 x Intel Xeon Gold 6254

24th

650 ^{+/- 3}

Intel Xeon X3470

24th

658 ^{+/- 65}

2 x Intel Xeon Gold 6226

23rd

675 ^{+/- 47}

AMD FX-8350 Eight-Core

21st

734 ^{+/- 60}

Intel Xeon X5550

20th

770 ^{+/- 10}

Intel Xeon D-2183IT

18th

864 ^{+/- 83}

Intel Core i7-7800X

17th

917 ^{+/- 8}

Intel Core i5-7440HQ

15th

968 ^{+/- 4}

2 x Intel Xeon E5-2697 v3

15th

975 ^{+/- 32}

Intel Core i7-4600U

11th

1079 ^{+/- 32}

Intel Core i7-6820HQ

10th

1093 ^{+/- 30}

2 x Intel Xeon E5-2687W v4

10th

1109 ^{+/- 23}

Intel Core i7-4930K

9th

1130 ^{+/- 135}

Intel Xeon W-2155

8th

1136 ^{+/- 38}

Intel Core i7-4790

8th

1154 ^{+/- 21}

2 x Intel Xeon E5-2403 v2

8th

1164 ^{+/- 2}

Intel Xeon E5-2667 v4

7th

1167 ^{+/- 83}

Intel Core i7-4790K

7th

1168 ^{+/- 51}

Intel Core i3-7100U

6th

1223 ^{+/- 73}

Intel Core i3-7100

4th

1372 ^{+/- 59}

Intel Core i7-8700

2nd

1769 ^{+/- 207}

Based on OpenBenchmarking.org data, the selected test / test configuration (ctx_clock - Context Switch Time) has an average run-time of 2 minutes. By default this test profile is set to run at least 3 times but may increase if the standard deviation exceeds pre-defined defaults or other calculations deem additional runs necessary for greater statistical accuracy of the result.

Based on public OpenBenchmarking.org results, the selected test / test configuration has an average standard deviation of 0.2%.

Does It Scale Well With Increasing Cores?

No, based on the automated analysis of the collected public benchmark data, this test / test settings does not generally scale well with increasing CPU core counts. Data based on publicly available results for this test / test settings, separated by vendor, result divided by the reference CPU clock speed, grouped by matching physical CPU core count, and normalized against the smallest core count tested from each vendor for each CPU having a sufficient number of test samples and statistically significant data.

Notable Instruction Set Usage

Notable instruction set extensions supported by this test, based on an automatic analysis by the Phoronix Test Suite / OpenBenchmarking.org analytics engine.

Instruction Set

Support

Instructions Detected

Last automated analysis: 17 January 2022

This test profile binary relies on the shared libraries libc.so.6.

Tested CPU Architectures

This benchmark has been successfully tested on the below mentioned architectures. The CPU architectures listed is where successful OpenBenchmarking.org result uploads occurred, namely for helping to determine if a given test is compatible with various alternative CPU architectures.

CPU Architecture

Kernel Identifier

Verified On

Intel / AMD x86 64-bit

x86_64

(Many Processors)

Intel / AMD x86 32-bit

i686

(Many Processors)

Oct	NOV	Dec
	29
2022	2023	2024

test 8 Systems - 22 Benchmark Results	Intel Core i9-13900K - Gigabyte Z790 UD - Intel Device 7a27 AlmaLinux 9.2 - 5.14.0-284.25.1.el9_2.x86_64 - GCC 11.3.1 20221121
test 8 Systems - 22 Benchmark Results	AMD Ryzen 9 7950X 16-Core - Giga Computing MC13-LE1-000 v01010101 - AMD Device 14d8 AlmaLinux 9.2 - 6.5.3-1.el9.elrepo.x86_64 - GCC 11.3.1 20221121
bit-cc-tests 18 Systems - 35 Benchmark Results	4 x QEMU Virtual 2.5+ - QEMU Standard PC - Intel 440FX- 82441FX PMC Ubuntu 18.04 - 5.3.0-51-generic - ext4
bit-cc-tests 17 Systems - 35 Benchmark Results	4 x AMD EPYC (with IBPB) - QEMU Standard PC - Intel 440FX- 82441FX PMC Ubuntu 18.04 - 4.15.0-88-generic - ext4
bit-cc-tests 15 Systems - 35 Benchmark Results	4 x AMD EPYC - QEMU Standard PC - Intel 440FX- 82441FX PMC Ubuntu 18.04 - 4.15.0-88-generic - ext4
i914900k 1 System - 42 Benchmark Results	Intel Core i9-14900K - ASUS ROG STRIX Z790-E GAMING WIFI - Intel Device 7a27 Pop 22.04 - 6.5.4-76060504-generic - GNOME Shell 42.5
i914900k 1 System - 42 Benchmark Results	Intel Core i9-14900K - ASUS ROG STRIX Z790-E GAMING WIFI - Intel Device 7a27 Pop 22.04 - 6.5.4-76060504-generic - GNOME Shell 42.5
i514600k 1 System - 43 Benchmark Results	Intel Core i5-14600K - ASUS ROG STRIX Z790-E GAMING WIFI - Intel Device 7a27 Pop 22.04 - 6.5.4-76060504-generic - GNOME Shell 42.5
i514600k 1 System - 43 Benchmark Results	Intel Core i5-14600K - ASUS ROG STRIX Z790-E GAMING WIFI - Intel Device 7a27 Pop 22.04 - 6.5.4-76060504-generic - GNOME Shell 42.5
bit-cc-tests 16 Systems - 35 Benchmark Results	4 x AMD EPYC (with IBPB) - QEMU Standard PC - Intel 440FX- 82441FX PMC Ubuntu 18.04 - 4.15.0-88-generic - ext4
bit-cc-tests 15 Systems - 35 Benchmark Results	4 x Intel Xeon E312xx (Sandy Bridge IBRS update) - QEMU Standard PC - Intel 440FX- 82441FX PMC Ubuntu 18.04 - 5.3.0-51-generic - ext4
epyc-retbleed-7282 12 Systems - 34 Benchmark Results	AMD EPYC 7313 16-Core - Intel 440BX - 32GB Ubuntu 20.04.4 LTS - 5.10.142-1.ph4-esx - GCC 9.4.0
epyc-retbleed-7282 13 Systems - 34 Benchmark Results	32 x AMD EPYC 7351P 16-Core - Intel 440BX - 32GB Ubuntu 20.04.4 LTS - 5.10.142-1.ph4-esx - GCC 9.4.0
ctx 1 System - 1 Benchmark Result	AMD Ryzen 9 5900X 12-Core - ASUS ROG STRIX B550-E GAMING - AMD Starship Arch rolling - 6.6.1-arch1-1 - GNOME Shell 45.1
epyc-retbleed-7282 14 Systems - 34 Benchmark Results	AMD EPYC 7543P 32-Core - Intel 440BX - 32GB Ubuntu 20.04.4 LTS - 5.10.142-1.ph4-esx - GCC 9.4.0

Renoir vs. Icelake Benchmarks 2 Systems - 535 Benchmark Results	Intel Core i7-1065G7 - Dell 06CDVY - Intel Device 34ef Ubuntu 20.04 - 5.9.0-050900rc7daily20201003-generic - GNOME Shell 3.36.4
Ryzen 9 5900X / Ryzen 9 5950X Linux Performance 11 Systems - 217 Benchmark Results	AMD Ryzen 9 3900X 12-Core - ASUS ROG CROSSHAIR VIII HERO - AMD Starship Ubuntu 20.04 - 5.9.0-050900-generic - GNOME Shell 3.36.4
AMD Ryzen vs. Intel Core Benchmarking On Ubuntu Linux 12 Systems - 593 Benchmark Results	AMD Ryzen 9 3900XT 12-Core - MSI MEG X570 GODLIKE - AMD Starship Ubuntu 20.04 - 5.8.0-050800daily20200622-generic - GNOME Shell 3.36.2
Core i9 10900K vs. Ryzen 9 3900X/3950X Linux Benchmarks Featured Processor Comparison	Intel Core i9-10900K - Gigabyte Z490 AORUS MASTER - Intel Comet Lake PCH Ubuntu 20.04 - 5.7.0-999-generic - GNOME Shell 3.36.1
AMD Threadripper 3960X vs. Intel Core i9 10980XE Featured Processor Comparison	Intel Core i9-10980XE - Gigabyte X299X DESIGNARE 10G - Intel Sky Lake-E DMI3 Registers Ubuntu 19.10 - 5.3.0-23-generic - GNOME Shell 3.34.1
Core i7 3960X vs. AMD Ryzen 5 3600X vs. Core i7 8700K 4 Systems - 67 Benchmark Results	AMD Ryzen 5 3600X 6-Core - MSI X470 GAMING M7 AC - AMD Device 1480 Ubuntu 18.04 - 5.0.0-27-generic - GNOME Shell 3.28.4
3 Years CPU Security Mitigations 22 Systems - 46 Benchmark Results	Intel Core i9-10900K - Gigabyte Z490 AORUS MASTER - Intel Comet Lake PCH Ubuntu 20.10 - 5.10.4-051004-generic - GNOME Shell 3.38.1
ASUS ROG CROSSHAIR VIII HERO Linux Benchmarks Ryzen 9 3900X Featured Motherboard Comparison	AMD Ryzen 9 3900X 12-Core - ASUS ROG CROSSHAIR VIII HERO - AMD Device 1480 Ubuntu 18.04 - 4.18.0-25-generic - GNOME Shell 3.28.4
CPU Benchmarks - POWER9 Blackbird 12 Systems - 209 Benchmark Results	AMD Ryzen 7 2700X Eight-Core - ASUS ROG CROSSHAIR VII HERO - AMD 17h Ubuntu 19.04 - 5.2.0-999-generic - GNOME Shell 3.32.1
Threadripper 3970X Ubuntu 20.04 LTS vs. Windows WSL/WSL2 3 Systems - 173 Benchmark Results	AMD Ryzen Threadripper 3970X 32-Core - 64GB - 931GB Ubuntu 20.04 - 4.4.0-19041-Microsoft - GCC 9.3.0
Ubuntu 20.10 Kernels AMD Zen 3 6 Systems - 143 Benchmark Results	AMD Ryzen 9 5900X 12-Core - ASUS ROG CROSSHAIR VIII HERO - AMD Starship Ubuntu 20.10 - 5.10.7-xanmod1 - GNOME Shell 3.38.1
Clear Linux vs. Manjaro Linux Performance Benchmarks - Summer 2019 2 Systems - 123 Benchmark Results	Intel Core i7-8700K - ASUS TUF Z370-PLUS GAMING - Intel 8th Gen Core ManjaroLinux 18.0.4 - 4.19.49-1-MANJARO - Xfce 4.13
Intel Core i5 11600K + Core i9 11900K Linux Performance 8 Systems - 439 Benchmark Results	Intel Core i5-10600K - Gigabyte Z490 AORUS MASTER - Intel Comet Lake PCH Ubuntu 21.04 - 5.12.0-051200rc3daily20210315-generic - GNOME Shell 3.38.3
Lenovo Kernel 9 Systems - 7 Benchmark Results	Intel Core i3-3110M - LENOVO - Intel 3rd Gen Core DRAM Gentoo - 5.12.8-gentoo-dist - MATE 1.24.0
Ryzen 5 5600X Linux Performance 12 Systems - 229 Benchmark Results	AMD Ryzen 5 2600 Six-Core - ASUS ROG CROSSHAIR VIII HERO - AMD 17h Ubuntu 20.04 - 5.9.0-050900-generic - GNOME Shell 3.36.4

ctx_clock

Project Site

Test Created

Test Maintainer

Test Type

Average Install Time

Average Run Time

Test Dependencies

Accolades

Supported Platforms

Revision History

Suites Using This Test

Performance Metrics

ctx_clock

Context Switch Time

Does It Scale Well With Increasing Cores?

Notable Instruction Set Usage

Tested CPU Architectures

Recent Test Results

Most Popular Test Results