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2026-08-14 - 04:22

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Phytec
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rackbslot5s.osadl.org (updated Fri Aug 14, 2026 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2541921995043,5cyclictest2579983-21munin-plugin-st21:00:000
2541928994738,6cyclictest2567588-21grep20:20:232
2541925994231,8cyclictest2559520-21munin-plugin-st20:00:011
2541925994227,9cyclictest2552251-21head19:35:251
2541921994233,4cyclictest0-21swapper/022:15:010
2541928994130,7cyclictest2636502-21grep23:40:262
2541928994129,9cyclictest311ktimers/222:25:122
2541925994128,8cyclictest0-21swapper/122:00:011
2541921994134,4cyclictest2552693-21cut19:40:010
2541932994033,4cyclictest2605999-21kthreadd22:15:013
2541925994027,9cyclictest2593619-21grep21:35:271
2541925994020,11cyclictest131rcu_preempt20:08:111
2541921994030,7cyclictest2643960-21idleruntime-cro00:04:590
2541932993931,5cyclictest2581708-21munin-plugin-st21:05:003
2541928993931,5cyclictest2595786-21munin-plugin-st21:45:012
2541928993927,7cyclictest2581256-21grep21:00:232
2541928993830,4cyclictest0-21swapper/200:10:252
2541925993829,5cyclictest0-21swapper/121:22:241
2541925993828,6cyclictest0-21swapper/121:35:011
2541925993827,7cyclictest2565850-21grep20:15:281
2541921993830,6cyclictest2583487-21kworker/u8:2+events_unbound21:22:230
2541921993826,5cyclictest2557781-21kworker/u8:2+events_unbound20:02:080
2541925993730,4cyclictest2607707-21cron22:20:001
2541925993727,7cyclictest2557803-21auditctl19:55:011
2541925993727,6cyclictest0-21swapper/100:10:001
2541925993726,7cyclictest2611114-21cron22:30:001
2541921993725,8cyclictest151rcuc/019:40:120
2541932993628,4cyclictest2614539-21sendmail22:40:003
2541932993627,4cyclictest0-21swapper/319:11:583
2541932993623,9cyclictest2645655-21sh00:09:593
2541928993627,6cyclictest0-21swapper/221:35:012
2541925993629,4cyclictest2655935-21sendmail00:40:001
2541925993628,4cyclictest0-21swapper/120:00:161
2541925993626,6cyclictest0-21swapper/122:25:001
2541925993626,5cyclictest0-21swapper/120:20:241
2541925993625,7cyclictest0-21swapper/121:05:021
2541932993526,4cyclictest0-21swapper/321:52:303
2541925993526,5cyclictest0-21swapper/119:45:011
2541925993520,9cyclictest131rcu_preempt22:10:171
254192199359,4cyclictest25896682fgrep21:25:260
2541921993526,6cyclictest2646896-21unixbench_multi00:10:250
2541921993526,5cyclictest0-21swapper/023:05:260
2541932993426,4cyclictest0-21swapper/320:00:273
2541932993421,9cyclictest204-21dbus-daemon23:07:423
2541928993427,4cyclictest2558201-21fschecks_count19:55:152
2541925993426,5cyclictest0-21swapper/122:50:271
2541925993424,7cyclictest221rcuc/121:05:181
2541925993418,9cyclictest131rcu_preempt23:24:131
2541925993415,9cyclictest131rcu_preempt21:12:151
2541921993425,7cyclictest2602292-21kworker/u8:0+events_unbound22:02:330
2541921993423,7cyclictest2581944-21wc21:05:020
2541932993324,4cyclictest0-21swapper/321:00:003
2541928993327,3cyclictest0-21swapper/223:15:252
2541928993323,7cyclictest0-21swapper/200:10:002
2541928993322,8cyclictest2585307-21cron21:15:012
2541928993321,8cyclictest0-21swapper/223:25:152
2541925993323,5cyclictest0-21swapper/119:15:271
2541925993322,8cyclictest231ktimers/123:10:181
2541925993322,6cyclictest0-21swapper/122:40:261
2541925993322,6cyclictest0-21swapper/122:40:251
2541925993321,8cyclictest231ktimers/119:22:001
2541925993321,8cyclictest0-21swapper/123:55:011
2541925993318,4cyclictest131rcu_preempt00:02:061
2541925993312,10cyclictest0-21swapper/122:56:531
2541921993327,4cyclictest2616098-21kworker/u8:1+events_unbound22:50:420
2541921993327,4cyclictest2591830-21kworker/u8:2+events_unbound21:32:250
2541921993324,6cyclictest0-21swapper/023:40:000
2541932993225,5cyclictest2642208-21kworker/u8:2+events_unbound00:02:503
2541932993224,4cyclictest0-21swapper/322:30:163
2541932993224,4cyclictest0-21swapper/322:05:263
2541932993224,4cyclictest0-21swapper/300:30:253
2541932993222,6cyclictest0-21swapper/323:25:013
254192899325,4cyclictest131rcu_preempt23:40:002
2541928993224,5cyclictest0-21swapper/220:20:012
254192599327,13cyclictest24-21ksoftirqd/119:25:201
2541925993225,4cyclictest0-21swapper/120:25:241
2541925993224,4cyclictest0-21swapper/123:15:261
2541925993222,7cyclictest231ktimers/122:00:181
2541925993218,9cyclictest131rcu_preempt23:56:051
2541925993214,3cyclictest131rcu_preempt22:33:271
2541921993223,6cyclictest0-21swapper/000:09:590
2541921993223,5cyclictest2631588-21sh23:30:010
2541932993123,4cyclictest0-21swapper/323:00:003
2541928993125,3cyclictest0-21swapper/221:00:012
254192599316,7cyclictest24-21ksoftirqd/123:30:241
254192599316,13cyclictest24-21ksoftirqd/122:40:011
254192599313,8cyclictest24-21ksoftirqd/100:10:241
2541925993124,4cyclictest0-21swapper/100:20:001
2541925993121,7cyclictest231ktimers/119:10:211
2541925993121,6cyclictest0-21swapper/120:10:261
2541925993120,4cyclictest131rcu_preempt23:26:291
2541925993112,11cyclictest131rcu_preempt20:55:151
2541925993110,5cyclictest131rcu_preempt21:15:111
2541921993111,3cyclictest0-21swapper/019:50:170
2541932993022,5cyclictest0-21swapper/320:20:003
2541932993022,4cyclictest0-21swapper/321:25:283
2541932993022,4cyclictest0-21swapper/320:30:013
2541928993022,4cyclictest0-21swapper/222:12:342
2541928993020,6cyclictest0-21swapper/223:20:252
254192599309,6cyclictest24-21ksoftirqd/100:20:191
254192599306,8cyclictest24-21ksoftirqd/120:45:001
254192599304,6cyclictest24-21ksoftirqd/100:30:001
254192599304,6cyclictest24-21ksoftirqd/100:29:591
2541925993023,4cyclictest231ktimers/122:05:221
2541925993021,5cyclictest2555669-21head19:45:261
2541925993020,5cyclictest0-21swapper/121:55:011
2541925993012,3cyclictest131rcu_preempt23:03:511
2541925993010,5cyclictest131rcu_preempt21:45:231
2541925993010,3cyclictest131rcu_preempt20:33:091
2541921993024,3cyclictest0-21swapper/020:40:250
2541921993019,8cyclictest2628191-21sendmail23:20:000
2541932992921,4cyclictest0-21swapper/323:00:243
2541932992920,6cyclictest2614911-21cut22:40:163
2541932992920,6cyclictest2614911-21cut22:40:163
2541932992920,6cyclictest0-21swapper/321:40:263
2541932992918,6cyclictest0-21swapper/321:10:013
2541928992923,3cyclictest0-21swapper/222:20:272
2541928992921,5cyclictest0-21swapper/221:10:002
2541928992921,4cyclictest2574884-21munin-plugin-st20:45:002
2541928992921,4cyclictest0-21swapper/222:40:262
2541928992921,4cyclictest0-21swapper/222:40:262
254192599299,5cyclictest131rcu_preempt20:45:211
254192599299,5cyclictest131rcu_preempt00:35:001
254192599298,6cyclictest24-21ksoftirqd/120:50:131
254192599298,5cyclictest131rcu_preempt23:40:261
254192599295,8cyclictest24-21ksoftirqd/122:50:011
2541925992919,7cyclictest231ktimers/123:35:151
2541925992918,8cyclictest231ktimers/119:30:171
2541925992913,9cyclictest131rcu_preempt21:25:161
2541925992912,10cyclictest2586937-21kworker/u8:0-events_unbound21:40:171
2541925992910,4cyclictest131rcu_preempt20:35:481
2541925992910,4cyclictest131rcu_preempt20:35:481
2541925992910,3cyclictest131rcu_preempt23:49:031
2541932992822,3cyclictest0-21swapper/323:40:253
2541932992822,3cyclictest0-21swapper/319:30:263
2541932992820,4cyclictest0-21swapper/319:20:263
2541932992819,5cyclictest0-21swapper/322:15:163
2541932992818,7cyclictest2647711-21diskstats00:15:163
2541932992817,8cyclictest2546079-21seq19:20:013
2541928992820,4cyclictest0-21swapper/222:37:362
2541928992817,8cyclictest311ktimers/223:00:112
2541925992810,11cyclictest131rcu_preempt23:08:051
254192199289,5cyclictest131rcu_preempt20:30:130
254192199289,11cyclictest11-21ksoftirqd/019:15:040
2541921992821,4cyclictest13550irq/42-30be0000.ethernet20:45:280
2541921992821,4cyclictest0-21swapper/019:25:270
2541921992820,6cyclictest121ktimers/000:20:120
2541921992820,5cyclictest0-21swapper/021:50:170
2541921992816,10cyclictest2596007-21/usr/sbin/munin21:45:200
254192199281,4cyclictest2638619-21cron23:50:000
2541932992721,3cyclictest0-21swapper/320:00:013
2541932992719,4cyclictest0-21swapper/323:15:253
2541932992719,4cyclictest0-21swapper/321:55:273
2541932992717,6cyclictest2552230-21grep19:35:263
2541932992715,7cyclictest2647368-21basename00:14:593
254192899273,5cyclictest2551087-21cat19:35:012
2541928992719,5cyclictest0-21swapper/200:30:162
2541928992718,5cyclictest2603884-21unixbench_singl22:05:252
254192199279,5cyclictest2574664-21kworker/u8:0+events_unbound21:12:090
2541921992720,4cyclictest2614525-21sendmail22:40:000
2541921992717,6cyclictest0-21swapper/022:55:250
2541932992618,4cyclictest0-21swapper/321:15:173
2541932992618,4cyclictest0-21swapper/319:25:173
2541932992614,8cyclictest204-21dbus-daemon19:47:053
2541928992620,3cyclictest0-21swapper/220:35:262
2541928992620,3cyclictest0-21swapper/220:35:262
2541928992615,7cyclictest2594067-21run-parts21:40:002
2541921992620,4cyclictest2627896-21kworker/u8:3+events_unbound23:21:420
2541921992619,5cyclictest2640450-21kworker/u8:1+events_unbound23:57:000
2541921992619,4cyclictest2619538-21kworker/u8:2+events_unbound23:00:240
2541921992619,4cyclictest13550irq/42-30be0000.ethernet19:15:000
2541921992619,4cyclictest0-21swapper/022:20:160
2541921992617,6cyclictest2558217-21tune2fs19:55:160
2541921992614,8cyclictest2564147-21grep20:10:250
2541921992611,5cyclictest11-21ksoftirqd/021:20:010
254192199261,12cyclictest0-21swapper/021:09:340
254192199261,11cyclictest2615850-21sshd22:40:260
254192199261,11cyclictest2615850-21sshd22:40:250
2541932992519,4cyclictest2574664-21kworker/u8:0+events_unbound20:52:213
2541932992519,3cyclictest0-21swapper/321:45:183
2541932992519,3cyclictest0-21swapper/320:35:143
2541932992519,3cyclictest0-21swapper/320:35:133
2541932992518,3cyclictest0-21swapper/322:25:163
2541932992515,7cyclictest2617083-21pluginstate22:45:233
2541932992513,7cyclictest2619839-21date22:55:013
2541928992518,5cyclictest2589980-21unixbench_multi21:25:292
2541928992518,4cyclictest0-21swapper/223:30:262
2541928992518,4cyclictest0-21swapper/221:20:272
2541928992517,4cyclictest0-21swapper/221:15:162
2541928992517,4cyclictest0-21swapper/200:20:162
2541928992516,6cyclictest0-21swapper/219:35:162
2541928992515,6cyclictest0-21swapper/222:20:012
254192899251,3cyclictest0-21swapper/222:58:482
254192899251,12cyclictest645-21runrttasks22:32:142
2541921992519,4cyclictest2565406-21kworker/u8:0+events_unbound20:22:120
2541921992519,3cyclictest0-21swapper/019:45:130
2541921992518,5cyclictest2595542-21kworker/u8:2+events_unbound21:55:160
2541921992517,4cyclictest2550559-21head19:30:260
2541921992517,4cyclictest0-21swapper/022:49:590
2541921992512,10cyclictest0-21swapper/000:37:490
254192199250,12cyclictest0-21swapper/022:25:370
2541932992418,4cyclictest0-21swapper/320:20:253
2541932992418,3cyclictest2590851-21fschecks_count21:30:173
2541932992418,3cyclictest0-21swapper/319:40:133
2541932992417,3cyclictest0-21swapper/322:20:213
2541932992416,6cyclictest2650730-21kworker/u8:0+events_unbound00:37:573
2541932992416,5cyclictest0-21swapper/323:50:003
2541932992416,4cyclictest0-21swapper/323:30:263
2541932992414,7cyclictest2634129-21pluginstate23:35:223
2541932992414,7cyclictest2587452-21grep21:20:173
2541932992414,7cyclictest1-21systemd21:12:223
254193299241,11cyclictest0-21swapper/323:51:493
2541928992418,4cyclictest2544080-21kworker/u8:1+events_unbound19:27:012
2541928992418,3cyclictest0-21swapper/220:10:122
2541928992418,3cyclictest0-21swapper/200:00:162
2541928992417,4cyclictest0-21swapper/200:15:262
2541928992416,5cyclictest0-21swapper/223:10:252
254192199249,3cyclictest131rcu_preempt21:45:020
2541921992418,3cyclictest0-21swapper/021:35:270
2541921992418,3cyclictest0-21swapper/020:25:240
2541921992417,5cyclictest2627817-21kworker/u8:2+events_unbound23:51:220
2541921992417,5cyclictest2609313-21kworker/u8:0+events_unbound22:33:560
2541921992417,4cyclictest2635653-21fschecks_time23:40:140
2541921992417,3cyclictest0-21swapper/000:20:000
2541921992416,4cyclictest0-21swapper/022:20:010
2541921992414,6cyclictest0-21swapper/020:50:250
2541932992317,4cyclictest2544080-21kworker/u8:1-events_unbound19:50:153
2541932992317,3cyclictest2630699-21ntpq23:25:223
2541932992316,4cyclictest0-21swapper/320:10:193
2541932992315,4cyclictest0-21swapper/320:40:153
2541928992317,3cyclictest0-21swapper/200:25:272
2541928992317,3cyclictest0-21swapper/200:25:272
2541928992314,7cyclictest2596457-21meminfo21:45:222
254192199235,3cyclictest131rcu_preempt19:20:120
2541921992317,3cyclictest13550irq/42-30be0000.ethernet20:15:210
254192199231,18cyclictest0-21swapper/023:34:140
254192199231,18cyclictest0-21swapper/022:06:330
254192199230,19cyclictest0-21swapper/020:39:400
254192199230,19cyclictest0-21swapper/020:39:400
254192199230,19cyclictest0-21swapper/020:06:250
2541932992216,3cyclictest0-21swapper/320:30:213
2541932992216,3cyclictest0-21swapper/300:20:143
2541932992215,3cyclictest0-21swapper/320:45:253
2541928992217,2cyclictest0-21swapper/219:10:252
2541928992216,3cyclictest0-21swapper/222:47:392
2541928992216,3cyclictest0-21swapper/219:15:252
2541928992216,3cyclictest0-21swapper/200:35:272
2541928992215,5cyclictest2576768-21latency_hist20:50:002
2541928992215,4cyclictest0-21swapper/223:45:252
254192899221,18cyclictest311ktimers/219:46:592
2541928992211,8cyclictest2556336-21apt-get19:50:112
254192899221,17cyclictest629-21snmpd21:55:132
254192899221,15cyclictest2553935-21sed19:40:252
254192899220,4cyclictest0-21swapper/221:54:092
254192199223,9cyclictest131rcu_preempt00:30:200
254192199221,19cyclictest0-21swapper/023:10:130
2541932992116,3cyclictest0-21swapper/323:10:163
2541932992113,4cyclictest0-21swapper/320:05:163
2541932992110,8cyclictest2640830-21cat23:55:113
254192899212,3cyclictest2546258-21fschecks_count19:20:152
2541928992115,3cyclictest0-21swapper/223:05:162
2541928992110,8cyclictest2639185-21entropy23:50:142
2541932992012,5cyclictest391ktimers/321:35:203
2541928992014,3cyclictest2577015-21fschecks_time20:50:162
2541928992014,3cyclictest0-21swapper/220:25:252
2541928992012,4cyclictest2642238-21sh00:00:002
2541928992012,4cyclictest2571041-21unixbench_singl20:30:262
2541928992010,7cyclictest2561677-21cut20:05:142
2541932991913,3cyclictest0-21swapper/300:25:223
2541932991913,3cyclictest0-21swapper/300:25:223
2541928991911,5cyclictest311ktimers/220:00:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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