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

22 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 17 January 2025.

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 4,334 public results since 18 February 2019 with the latest data as of 9 January 2025.

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

99th

88 ^{+/- 12}

AMD Ryzen 7 PRO 4750U

99th

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}

AMD Ryzen 5 4500U

97th

118

AMD EPYC 7662 64-Core

96th

120 ^{+/- 1}

AMD EPYC 7702 64-Core

96th

120

2 x AMD EPYC 7663 56-Core

96th

120

Intel Xeon Gold 5218

94th

123 ^{+/- 2}

Intel Core i5-14500

93rd

125

AMD Ryzen 5 3550H

93rd

126

Intel Xeon Platinum 8490H

92nd

128

Intel Core i9-10980XE

92nd

128 ^{+/- 18}

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}

Intel Core i9-13900K

90th

132 ^{+/- 9}

AMD EPYC 7773X 64-Core

90th

132

Intel Core i7-10850H

88th

134 ^{+/- 1}

Intel Xeon Silver 4216

88th

134 ^{+/- 4}

Intel Core i5-13400

88th

134 ^{+/- 1}

AMD EPYC 7552 48-Core

88th

135 ^{+/- 3}

Intel Core i9-14900K

86th

136 ^{+/- 9}

Intel Core i7-12700H

85th

138 ^{+/- 11}

Intel Core i5-12400

85th

138 ^{+/- 4}

2 x AMD EPYC 7601 32-Core

85th

138 ^{+/- 12}

AMD EPYC 7642 48-Core

84th

139 ^{+/- 1}

Intel Core i5-1135G7

84th

139 ^{+/- 13}

Intel Xeon Platinum 8280

84th

140 ^{+/- 7}

AMD EPYC 7401P 24-Core

84th

140

AMD EPYC 7551 32-Core

84th

140

2 x AMD EPYC 7742 64-Core

83rd

141 ^{+/- 19}

Intel Xeon Silver 4214R

82nd

142

AMD EPYC 7452 32-Core

82nd

143

AMD EPYC 7532 32-Core

82nd

144

AMD EPYC 7601 32-Core

82nd

144 ^{+/- 12}

2 x Intel Xeon Silver 4214

80th

146 ^{+/- 7}

AMD Ryzen 9 5950X 16-Core

79th

147 ^{+/- 22}

AMD Ryzen Threadripper 3990X 64-Core

78th

148 ^{+/- 21}

AMD EPYC 7502 32-Core

76th

150

Intel Core i9-10900K

76th

150 ^{+/- 7}

2 x AMD EPYC 7763 64-Core

76th

150 ^{+/- 13}

AMD EPYC 7502P 32-Core

76th

150 ^{+/- 1}

Intel Xeon E-2288G

76th

150 ^{+/- 4}

AMD Ryzen Threadripper 2990WX 32-Core

76th

150

Mid-Tier

75th

> 150

2 x AMD EPYC 9654 96-Core

75th

151 ^{+/- 10}

AMD EPYC 75F3 32-Core

72nd

153 ^{+/- 7}

2 x Intel Xeon Gold 6254

72nd

153 ^{+/- 3}

Intel Core i7-1185G7

71st

155 ^{+/- 2}

2 x AMD EPYC 7371 16-Core

71st

155

AMD Ryzen 7 3800XT 8-Core

71st

156

AMD EPYC 7352 24-Core

70th

157 ^{+/- 9}

2 x AMD EPYC 75F3 32-Core

70th

157 ^{+/- 13}

AMD Ryzen 5 5600X 6-Core

70th

158 ^{+/- 17}

Intel Core i7-11700K

70th

158 ^{+/- 2}

Intel Core i9-9900KS

69th

159 ^{+/- 2}

2 x AMD EPYC 7543 32-Core

69th

159 ^{+/- 16}

Intel Core i9-11900K

69th

160 ^{+/- 12}

Intel Core i5-14600K

68th

163 ^{+/- 9}

Intel Xeon Gold 6226R

67th

165 ^{+/- 18}

Intel Xeon Silver 4215R

67th

166

Intel Core i5-3380M

67th

168

Intel Xeon Gold 5217

65th

169

2 x AMD EPYC 7313 16-Core

65th

170 ^{+/- 17}

2 x INTEL XEON GOLD 6548Y

64th

171 ^{+/- 5}

Intel Core i5-13600K

63rd

173 ^{+/- 10}

2 x AMD EPYC 74F3 24-Core

63rd

173 ^{+/- 9}

Intel Xeon Gold 6210U

63rd

174 ^{+/- 1}

Intel Core i5-10600K

63rd

174 ^{+/- 6}

AMD EPYC 7542 32-Core

63rd

174

AMD EPYC 7F52 16-Core

63rd

175

AMD EPYC 7351P 16-Core

63rd

175 ^{+/- 18}

AMD EPYC 3255 8-Core Temp

62nd

176 ^{+/- 3}

AMD Ryzen 7 7700X 8-Core

62nd

176 ^{+/- 14}

AMD Ryzen 5 1600 Six-Core

62nd

176 ^{+/- 24}

AMD Ryzen 9 7900X3D 12-Core

62nd

176

Intel Core i3-10100

62nd

176 ^{+/- 3}

Intel Core i3-14100

61st

178

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 9 9950X 16-Core

61st

180 ^{+/- 17}

AMD Ryzen Threadripper PRO 5975WX 32-Cores

61st

180

AMD EPYC 74F3 24-Core

61st

180 ^{+/- 13}

AMD Ryzen 5 1600X Six-Core

61st

180

AMD Ryzen Threadripper 2950X 16-Core

58th

181 ^{+/- 8}

Intel Core i5-12600K

58th

182 ^{+/- 11}

AMD Ryzen Threadripper PRO 3955WX 16-Cores

58th

184 ^{+/- 17}

AMD EPYC 72F3 8-Core

58th

185

2 x AMD EPYC 72F3 8-Core

58th

185

AMD EPYC 7F32 8-Core

58th

185 ^{+/- 1}

AMD EPYC 7F72 24-Core

56th

187 ^{+/- 12}

2 x AMD EPYC 9554 64-Core

56th

187 ^{+/- 1}

AMD Ryzen 5 7600X 6-Core

55th

188

AMD EPYC 73F3 16-Core

55th

189 ^{+/- 12}

AMD Ryzen 3 1200

55th

189 ^{+/- 6}

AMD Ryzen Threadripper PRO 5965WX 24-Cores

55th

190

AMD Ryzen 3 3300X 4-Core

55th

190

AMD EPYC 7543 32-Core

55th

190 ^{+/- 23}

AMD EPYC 7262 8-Core

53rd

192

2 x AMD EPYC 7F72 24-Core

53rd

193 ^{+/- 1}

AMD Ryzen 3 3200G

53rd

194 ^{+/- 19}

AMD EPYC 7282 16-Core

52nd

196 ^{+/- 1}

2 x Intel $0000%

52nd

196 ^{+/- 28}

Intel Core i3-10105

52nd

196 ^{+/- 6}

AMD Ryzen 9 7950X 16-Core

51st

197 ^{+/- 24}

2 x AMD EPYC 73F3 16-Core

51st

198 ^{+/- 20}

AMD Ryzen 3 2200G

51st

198 ^{+/- 15}

Intel Xeon W-2295

51st

201 ^{+/- 1}

Intel Xeon W-1370P

51st

202 ^{+/- 28}

Median

50th

202

AMD EPYC 7272 12-Core

50th

203 ^{+/- 1}

Intel Celeron G5900

50th

206 ^{+/- 5}

Intel Pentium Gold G6400

49th

208 ^{+/- 1}

AMD Ryzen Threadripper PRO 7995WX 96-Cores

49th

209 ^{+/- 11}

AMD EPYC 7232P 8-Core

48th

217 ^{+/- 1}

2 x Intel Xeon Gold 6354

47th

218 ^{+/- 2}

AMD EPYC 7551P 32-Core

46th

229 ^{+/- 20}

Intel Celeron G6900

44th

251

AMD Ryzen 5 2600 Six-Core

42nd

255 ^{+/- 34}

AMD Phenom II X4 965

41st

266 ^{+/- 2}

2 x AMD EPYC 7H12 64-Core

37th

338

2 x Intel Xeon Gold 5222

36th

343 ^{+/- 32}

AMD Ryzen 5 8600G

36th

348

Intel Atom P5362

35th

358 ^{+/- 1}

AMD FX-8370E Eight-Core

30th

534

2 x AMD Opteron 6276

29th

537 ^{+/- 9}

2 x Intel Xeon L5640

28th

561 ^{+/- 31}

2 x Intel Xeon E5-2450L 0

27th

584 ^{+/- 7}

Low-Tier

25th

> 619

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

22nd

734 ^{+/- 60}

Intel Xeon X5550

21st

770 ^{+/- 10}

Intel Xeon D-2183IT

18th

864 ^{+/- 83}

Intel Core i7-7800X

17th

917 ^{+/- 8}

Intel Core i5-7440HQ

16th

968 ^{+/- 4}

2 x Intel Xeon E5-2697 v3

15th

975 ^{+/- 32}

Intel Core i7-3960X

12th

1074 ^{+/- 50}

2 x Intel Xeon E5-2687W 0

12th

1075 ^{+/- 4}

Intel Core i7-4600U

12th

1079 ^{+/- 32}

Intel Core i7-6820HQ

11th

1093 ^{+/- 30}

2 x Intel Xeon E5-2687W v4

11th

1109 ^{+/- 23}

Intel Core i7-4930K

10th

1124 ^{+/- 141}

Intel Xeon W-2155

9th

1136 ^{+/- 38}

Intel Core i7-4790

9th

1154 ^{+/- 21}

2 x Intel Xeon E5-2403 v2

9th

1164 ^{+/- 2}

Intel Xeon E5-2667 v4

8th

1167 ^{+/- 83}

Intel Core i7-4790K

8th

1176 ^{+/- 26}

Intel Core i3-7100U

7th

1223 ^{+/- 73}

Intel Core i3-8100

6th

1317 ^{+/- 75}

Intel Core i3-7100

5th

1372 ^{+/- 59}

Intel Core i7-8700

3rd

1769 ^{+/- 207}

2 x Intel Xeon Gold 5118

2nd

1891 ^{+/- 166}

Detailed Performance Overview

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)

ituietst310-ol95uek-20250102-2025Jan08 1 System - 335 Benchmark Results	4 x Intel Xeon Gold 5118 - Intel 440BX - Intel 440BX Oracle Linux Server 9.5 - 5.15.0-303.171.5.2.1.el9uek.x86_64 - GCC 11.5.0 20240719
beelink-eq14-cpu 1 System - 35 Benchmark Results	Intel N150 - AZW EQ - Intel Alder Lake-N PCH Kali 2024.4 - 6.11.2-amd64 - Xfce 4.20
ituietst310-ol94-20241003-2025Jan07 1 System - 335 Benchmark Results	4 x Intel Xeon Gold 5118 - Intel 440BX - Intel 440BX Oracle Linux Server 9.4 - 5.15.0-300.163.18.el9uek.x86_64 - GCC 11.4.1 20231218
ituietst308-ol810-uek6-20250102-2025Jan05 1 System - 335 Benchmark Results	4 x Intel Xeon Gold 5118 - Intel 440BX - Intel 440BX OracleServer 8.10 - 5.4.17-2136.338.4.2.el8uek.x86_64 - GCC 10.3.1 20210422
ituietst310-ol95-uek-20250102-2025Jan05 1 System - 335 Benchmark Results	4 x Intel Xeon Gold 5118 - Intel 440BX - Intel 440BX Oracle Linux Server 9.5 - 5.15.0-303.171.5.2.1.el9uek.x86_64 - GCC 11.5.0 20240719
ituietst321-ol95uek-20250102-2025Jan04 1 System - 356 Benchmark Results	2 x Intel Xeon Gold 5118 - Cisco UCSB-B200-M5 - Intel Sky Lake-E DMI3 Registers Oracle Linux Server 9.5 - 5.15.0-303.171.5.2.1.el9uek.x86_64 - GCC 11.5.0 20240719
ituietst324-ol810-20250102-2025Jan04 1 System - 351 Benchmark Results	2 x Intel Xeon Gold 5118 - Cisco UCSB-B200-M5 - Intel Sky Lake-E DMI3 Registers OracleServer 8.10 - 5.15.0-303.171.5.2.1.el8uek.x86_64 - GCC 10.3.1 20210422
ituietst309-ol810-20250102-2025Jan3 1 System - 341 Benchmark Results	4 x Intel Xeon Gold 5118 - Intel 440BX - Intel 440BX OracleServer 8.10 - 4.18.0-553.33.1.el8_10.x86_64 - GCC 10.3.1 20210422
ituietst312-ol95-20250102-2025Jan3 1 System - 348 Benchmark Results	8 x Intel Xeon Gold 5118 - Intel 440BX - Intel 440BX Oracle Linux Server 9.5 - 5.14.0-503.16.1.el9_5.x86_64 - GCC 11.5.0 20240719
ryzen-upgrade-2024 7 Systems - 216 Benchmark Results	AMD Ryzen 7 5700X 8-Core - Gigabyte X470 AORUS ULTRA GAMING-CF - AMD Starship Ubuntu 23.10 - 6.5.0-44-generic - X Server 1.21.1.7
ryzen-upgrade-2024 7 Systems - 216 Benchmark Results	AMD Ryzen 5 2600 Six-Core - Gigabyte X470 AORUS ULTRA GAMING-CF - AMD 17h Ubuntu 23.10 - 6.5.0-44-generic - X Server 1.21.1.7
orin_accelerated_gpu 1 System - 22 Benchmark Results	ARMv8 - NVIDIA Jetson - 62GB Ubuntu 22.04 - 5.15.148-tegra - GNOME Shell 42.9
ryzen-upgrade-2024 7 Systems - 216 Benchmark Results	AMD Ryzen 5 2600 Six-Core - Gigabyte X470 AORUS ULTRA GAMING-CF - AMD 17h Ubuntu 23.10 - 6.5.0-44-generic - X Server 1.21.1.7
ryzen-upgrade-2024 6 Systems - 216 Benchmark Results	AMD Ryzen 5 2600 Six-Core - Gigabyte X470 AORUS ULTRA GAMING-CF - AMD 17h Ubuntu 23.10 - 6.5.0-44-generic - KDE Plasma 5.27.10
ryzen-upgrade-2024 6 Systems - 216 Benchmark Results	AMD Ryzen 5 2600 Six-Core - Gigabyte X470 AORUS ULTRA GAMING-CF - AMD 17h Ubuntu 23.10 - 6.5.0-44-generic - KDE Plasma 5.27.10

Lenovo Kernel 9 Systems - 7 Benchmark Results	Intel Core i3-3110M - LENOVO - Intel 3rd Gen Core DRAM CentOS Stream 8 - 4.18.0-301.1.el8.x86_64 - GNOME Shell 3.32.2
Renoir vs. Icelake Benchmarks 2 Systems - 535 Benchmark Results	AMD Ryzen 5 4500U - LENOVO LNVNB161216 - AMD Renoir Root Complex Ubuntu 20.04 - 5.9.0-050900rc7daily20201002-generic - GNOME Shell 3.36.4
Intel Core i9 13900K Linux CPU Benchmarks 16 Systems - 333 Benchmark Results	AMD Ryzen 7 5800X 8-Core - ASUS ROG CROSSHAIR VIII HERO - AMD Starship Ubuntu 22.04 - 6.0.0-060000rc1daily20220820-generic - GNOME Shell 42.2
3 Years CPU Security Mitigations 22 Systems - 46 Benchmark Results	AMD Ryzen 7 1800X Eight-Core - MSI X370 XPOWER GAMING TITANIUM - AMD 17h Ubuntu 20.10 - 5.10.4-051004-generic - GNOME Shell 3.38.1
Ryzen 9 5900X / Ryzen 9 5950X Linux Performance 11 Systems - 217 Benchmark Results	Intel Core i5-10600K - Gigabyte Z490 AORUS MASTER - Intel Comet Lake PCH Ubuntu 20.04 - 5.9.0-050900-generic - GNOME Shell 3.36.4
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 Ryzen vs. Intel Core Benchmarking On Ubuntu Linux 12 Systems - 593 Benchmark Results	AMD Ryzen 5 3600X 6-Core - MSI X470 GAMING M7 AC - AMD Starship Ubuntu 20.04 - 5.8.0-050800daily20200622-generic - GNOME Shell 3.36.2
AMD Threadripper 3960X vs. Intel Core i9 10980XE Featured Processor Comparison	AMD Ryzen Threadripper 3960X 24-Core - MSI Creator TRX40 - AMD Starship Ubuntu 19.10 - 5.3.0-23-generic - GNOME Shell 3.34.1
Intel Core i5 11600K + Core i9 11900K Linux Performance 8 Systems - 439 Benchmark Results	AMD Ryzen 5 5600X 6-Core - ASUS ROG CROSSHAIR VIII HERO - AMD Starship Ubuntu 21.04 - 5.12.0-051200rc3daily20210315-generic - GNOME Shell 3.38.3
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
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 Clear Linux OS 29920 - 5.1.9-781.native - GNOME Shell 3.32.2
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 - 5.11.0-051100rc3daily20210116-generic - GNOME Shell 3.38.1
Linux 5.0 Spectre Meltdown Benchmarks Intel/AMD 6 Systems - 57 Benchmark Results	Intel Core i9-7960X - MSI X299 SLI PLUS - Intel Sky Lake-E DMI3 Registers Ubuntu 18.10 - 5.0.0-999-generic - GNOME Shell 3.30.1
Core i7 3960X vs. AMD Ryzen 5 3600X vs. Core i7 8700K 4 Systems - 67 Benchmark Results	Intel Core i7-8700K - ASUS TUF Z370-PLUS GAMING - Intel 8th Gen Core Ubuntu 18.04 - 5.0.0-27-generic - GNOME Shell 3.28.4
CPU Benchmarks - POWER9 Blackbird 12 Systems - 209 Benchmark Results	Intel Core i9-9900K - ASUS PRIME Z390-A - Intel Cannon Lake PCH Ubuntu 19.04 - 5.2.0-999-generic - GNOME Shell 3.32.1

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