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2026-06-18 - 15:41

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 376 highest latencies:
System rackbslot5s.osadl.org (updated Thu Jun 18, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3088292995850,5cyclictest3118105-21kworker/u8:1+events_unbound08:45:180
3088305995142,5cyclictest3104382-21grep07:55:003
3088302995036,11cyclictest311ktimers/210:00:132
3088292995043,4cyclictest3090814-21fschecks_time07:15:050
3088292995036,11cyclictest121ktimers/007:45:120
3088296994929,16cyclictest0-21swapper/110:55:001
3088305994842,4cyclictest3183144-21kworker/u8:3+events_unbound12:15:553
3088292994842,4cyclictest3195542-21kworker/u8:0+events_unbound12:25:550
3088305994735,9cyclictest391ktimers/308:35:123
3088302994739,4cyclictest3185168-21munin-plugin-st11:50:012
3088296994620,22cyclictest3123155-21grep08:45:251
3088305994538,5cyclictest3123564-21cut08:50:013
3088305994533,8cyclictest3113134-21basename08:20:013
3088292994438,4cyclictest3104242-21kworker/u8:3+events_unbound09:15:220
3088296994335,5cyclictest438-21cron07:50:001
308829699431,10cyclictest3189022-21/usr/sbin/munin12:00:141
3088292994335,4cyclictest3195610-21sendmail12:20:000
3088305994234,6cyclictest3087466-21kworker/u8:0+events_unbound08:20:123
3088305994232,7cyclictest3107992-21cron08:05:013
3088296994231,6cyclictest0-21swapper/110:25:261
3088296994215,24cyclictest3173636-21fschecks_time11:15:141
3088296994211,7cyclictest3183652-21cut11:45:001
3088292994235,4cyclictest3113104-21kthreadd08:20:010
3088305994134,4cyclictest3188598-21idleruntime-cro12:00:003
3088305994129,7cyclictest0-21swapper/307:30:243
3088302994131,6cyclictest3200487-21grep12:30:242
308829699418,6cyclictest3098240-21/usr/sbin/munin07:35:191
3088296994125,14cyclictest231ktimers/109:00:111
308829699411,9cyclictest3171510-21cron11:10:001
3088296994111,3cyclictest0-21swapper/107:40:261
3088296994110,4cyclictest3162596-21unixbench_singl10:40:261
308829699409,3cyclictest0-21swapper/111:50:271
3088296994014,3cyclictest3111630-21/usr/sbin/munin08:15:201
3088296994012,25cyclictest0-21swapper/109:30:231
308829699401,10cyclictest3196008-21sort12:20:141
308829699401,10cyclictest3119706-21grep08:35:241
3088296994010,3cyclictest0-21swapper/109:57:451
3088292994014,7cyclictest131rcu_preempt11:20:100
3088302993931,4cyclictest0-21swapper/208:20:112
3088302993927,9cyclictest311ktimers/211:10:122
3088296993912,23cyclictest0-21swapper/108:40:241
3088296993911,2cyclictest0-21swapper/112:08:301
3088296993910,5cyclictest53-21kcompactd007:20:181
3088296993910,5cyclictest53-21kcompactd007:20:181
3088292993919,5cyclictest3152293-21kworker/u8:2+events_unbound10:14:580
3088305993829,6cyclictest0-21swapper/311:40:013
3088302993830,4cyclictest0-21swapper/211:30:002
3088302993830,4cyclictest0-21swapper/211:30:002
3088302993827,7cyclictest3164231-21grep10:45:252
3088296993830,5cyclictest3154262-21sendmail10:20:001
3088296993812,6cyclictest3110883-21grep08:10:241
308829699381,12cyclictest3200459-21tail12:30:241
308829699381,11cyclictest3091954-21unixbench_multi07:15:251
308829699381,10cyclictest3164297-21grep10:45:251
3088296993810,4cyclictest0-21swapper/112:30:001
3088292993829,5cyclictest0-21swapper/007:15:010
3088292993828,6cyclictest121ktimers/009:45:100
3088305993727,7cyclictest3146956-21unixbench_multi09:55:263
3088305993726,7cyclictest0-21swapper/308:05:263
3088296993727,7cyclictest3090083-21munin-node07:15:021
3088296993725,8cyclictest0-21swapper/109:00:011
308829699372,10cyclictest3149152-21grep10:05:011
308829699371,9cyclictest3141850-21tail09:40:251
308829699371,9cyclictest3141850-21tail09:40:241
3088296993712,8cyclictest3145727-21ls09:55:001
3088296993712,5cyclictest231ktimers/108:05:141
3088292993730,5cyclictest3087466-21kworker/u8:0+events_unbound07:34:570
3088292993730,4cyclictest3120152-21sendmail08:40:010
3088292993727,4cyclictest0-21swapper/007:55:000
3088292993726,7cyclictest3128278-21grep09:00:230
308829299371,7cyclictest11-21ksoftirqd/010:00:120
3088305993629,4cyclictest3162545-21tail10:40:263
3088305993626,6cyclictest0-21swapper/311:25:253
3088305993626,6cyclictest0-21swapper/311:25:253
3088305993625,7cyclictest0-21swapper/310:25:263
3088305993625,7cyclictest0-21swapper/308:40:153
308830599361,4cyclictest131rcu_preempt09:00:103
308829699369,3cyclictest3195117-21unixbench_multi12:15:261
308829699362,10cyclictest3169348-21unixbench_multi11:00:261
308829699361,9cyclictest3184687-21grep11:45:241
3088296993615,18cyclictest231ktimers/109:25:501
3088296993615,17cyclictest0-21swapper/107:55:171
3088292993624,8cyclictest0-21swapper/009:10:250
308829299361,9cyclictest11-21ksoftirqd/010:45:130
3088305993527,4cyclictest0-21swapper/310:55:163
3088305993524,8cyclictest391ktimers/309:10:103
308829699359,5cyclictest231ktimers/109:10:231
308829699352,2cyclictest0-21swapper/107:25:171
3088296993516,15cyclictest0-21swapper/110:05:251
308829699351,11cyclictest3115735-21wc08:25:211
308829699351,10cyclictest3188092-21unixbench_multi11:55:231
3088292993524,7cyclictest121ktimers/007:55:130
3088305993426,4cyclictest0-21swapper/310:10:243
3088305993426,4cyclictest0-21swapper/310:05:163
3088305993425,4cyclictest0-21swapper/309:35:253
3088305993424,6cyclictest0-21swapper/307:55:263
3088305993423,7cyclictest0-21swapper/309:50:273
3088302993428,4cyclictest3179655-21kworker/u8:0+events_unbound11:30:462
3088302993427,4cyclictest0-21swapper/208:25:152
3088302993426,5cyclictest3087466-21kworker/u8:0+events_unbound07:50:022
3088302993423,7cyclictest0-21swapper/209:15:002
3088296993423,7cyclictest3130371-21sh09:10:001
3088296993413,4cyclictest3139711-21ntpq09:35:211
3088296993412,5cyclictest231ktimers/108:20:121
3088296993411,5cyclictest231ktimers/111:25:131
3088296993411,5cyclictest231ktimers/111:25:121
3088296993411,5cyclictest231ktimers/110:30:111
3088296993411,4cyclictest231ktimers/111:20:181
308829699341,10cyclictest3133344-21sed09:15:261
3088305993323,8cyclictest3170350-21if_eth011:05:163
3088305993323,6cyclictest0-21swapper/311:00:253
3088305993323,6cyclictest0-21swapper/310:35:013
3088305993322,7cyclictest0-21swapper/307:35:253
3088296993323,6cyclictest0-21swapper/110:10:251
308829699332,10cyclictest3159808-21/usr/sbin/munin10:35:231
308829699331,8cyclictest3118012-21grep08:30:231
3088296993311,3cyclictest645-21runrttasks07:53:301
3088292993323,6cyclictest3145322-21grep09:50:270
3088305993224,4cyclictest0-21swapper/311:45:243
3088305993224,4cyclictest0-21swapper/309:25:163
3088305993221,7cyclictest0-21swapper/311:15:003
3088302993225,4cyclictest0-21swapper/208:00:242
3088302993224,4cyclictest0-21swapper/209:20:222
308829699329,5cyclictest231ktimers/109:20:131
308829699321,10cyclictest3155975-21munin-run10:25:001
308829299323,4cyclictest131rcu_preempt11:10:130
3088292993225,5cyclictest3167783-21kworker/u8:1+events_unbound11:05:420
3088292993225,5cyclictest3104242-21kworker/u8:3+events_unbound09:40:270
3088292993225,5cyclictest3104242-21kworker/u8:3+events_unbound09:40:270
3088292993225,4cyclictest3099276-21idleruntime-cro07:40:020
3088292993225,3cyclictest0-21swapper/009:05:190
3088292993223,5cyclictest3095393-21tail07:25:260
3088292993223,4cyclictest0-21swapper/011:35:160
3088292993222,6cyclictest0-21swapper/010:30:000
3088305993124,3cyclictest0-21swapper/310:25:013
3088305993122,6cyclictest0-21swapper/309:00:003
3088305993119,8cyclictest3193468-21grep12:10:263
3088302993124,5cyclictest3109397-21kworker/u8:2+events_unbound08:15:132
3088302993124,4cyclictest0-21swapper/207:15:252
3088302993116,12cyclictest3088286-21cyclictest09:45:102
3088292993122,5cyclictest0-21swapper/010:20:260
3088292993121,6cyclictest0-21swapper/012:00:010
3088305993023,5cyclictest3090542-21timerwakeupswit07:15:023
3088305993022,5cyclictest0-21swapper/309:35:003
3088302993023,3cyclictest0-21swapper/207:35:162
3088302993022,6cyclictest3104242-21kworker/u8:3+events_unbound08:50:182
3088302993020,7cyclictest3122249-21cut08:45:152
308830299301,5cyclictest131rcu_preempt12:15:132
3088296993022,4cyclictest0-21swapper/109:50:001
308829699301,11cyclictest3181744-21cat11:40:001
3088296993010,4cyclictest231ktimers/108:00:211
3088292993022,4cyclictest0-21swapper/008:55:190
3088292993020,6cyclictest3159119-21grep10:30:230
3088292993010,12cyclictest11-21ksoftirqd/012:35:220
3088305992923,4cyclictest3148937-21kworker/u8:0+events_unbound10:47:423
3088305992922,3cyclictest0-21swapper/309:40:253
3088305992922,3cyclictest0-21swapper/309:40:253
3088305992921,4cyclictest0-21swapper/307:40:273
3088305992919,6cyclictest0-21swapper/307:45:243
3088302992922,4cyclictest0-21swapper/207:10:242
308829299293,9cyclictest11-21ksoftirqd/011:00:110
3088292992920,5cyclictest0-21swapper/010:55:160
308829299291,25cyclictest0-21swapper/008:10:110
3088305992821,4cyclictest0-21swapper/312:05:173
3088305992818,6cyclictest0-21swapper/310:50:173
3088305992817,6cyclictest0-21swapper/312:20:233
3088302992820,5cyclictest0-21swapper/211:55:232
3088302992819,6cyclictest0-21swapper/208:40:242
3088302992817,7cyclictest0-21swapper/208:10:242
308829299287,19cyclictest0-21swapper/011:19:370
3088292992821,4cyclictest3104242-21kworker/u8:3+events_unbound10:17:150
3088292992817,7cyclictest3138910-21basename09:35:000
3088292992810,5cyclictest131rcu_preempt10:35:110
3088305992718,5cyclictest0-21swapper/311:40:253
3088305992717,7cyclictest391ktimers/312:30:053
3088305992717,6cyclictest0-21swapper/311:15:253
3088302992721,3cyclictest0-21swapper/212:30:002
3088302992720,4cyclictest0-21swapper/208:10:012
3088302992719,5cyclictest0-21swapper/207:55:262
308829299278,11cyclictest0-21swapper/012:35:010
3088292992721,4cyclictest3186512-21kworker/u8:0+events_unbound11:54:580
3088292992720,5cyclictest3118105-21kworker/u8:1+events_unbound10:06:410
3088292992720,3cyclictest0-21swapper/012:10:260
308829299271,9cyclictest11-21ksoftirqd/010:50:110
3088292992719,4cyclictest0-21swapper/012:05:260
3088292992718,6cyclictest3139626-21sort09:35:190
3088292992717,6cyclictest0-21swapper/008:20:150
3088292992715,8cyclictest204-21dbus-daemon09:25:240
3088305992619,3cyclictest0-21swapper/311:30:253
3088305992619,3cyclictest0-21swapper/308:50:143
3088302992619,3cyclictest0-21swapper/212:35:202
3088302992618,4cyclictest3161298-21sendmail10:40:002
3088302992618,4cyclictest0-21swapper/210:25:162
3088302992615,7cyclictest3103944-21grep07:50:262
3088296992614,8cyclictest3097082-21grep07:30:251
3088292992620,4cyclictest3087466-21kworker/u8:0+events_unbound08:00:070
3088292992618,4cyclictest0-21swapper/009:20:260
3088292992611,9cyclictest131rcu_preempt07:43:490
3088305992520,3cyclictest3176666-21latency_hist11:25:003
3088305992515,6cyclictest0-21swapper/307:10:243
3088305992513,8cyclictest3143557-21grep09:45:233
3088302992517,5cyclictest0-21swapper/211:40:002
3088302992516,6cyclictest3169814-21cron11:05:002
3088302992515,7cyclictest204-21dbus-daemon08:30:132
3088302992515,5cyclictest0-21swapper/210:20:002
3088296992516,6cyclictest3193472-21grep12:10:261
3088296992515,6cyclictest0-21swapper/110:55:251
308829299253,4cyclictest131rcu_preempt11:40:110
3088292992519,4cyclictest3118105-21kworker/u8:1+events_unbound09:55:490
3088292992517,4cyclictest3178736-21fschecks_count11:30:160
3088292992516,5cyclictest3108400-21fschecks_count08:05:150
308829299251,12cyclictest0-21swapper/012:23:280
3088292992510,3cyclictest131rcu_preempt08:52:520
3088305992415,6cyclictest0-21swapper/308:30:003
3088305992413,7cyclictest0-21swapper/310:35:243
308830299244,5cyclictest3130505-21sed09:10:022
3088302992418,3cyclictest0-21swapper/211:40:232
3088302992418,3cyclictest0-21swapper/210:05:232
3088302992417,4cyclictest3165931-21tail10:50:242
3088302992417,4cyclictest0-21swapper/210:40:262
3088302992417,4cyclictest0-21swapper/209:20:002
3088302992416,5cyclictest0-21swapper/209:00:012
3088302992416,4cyclictest0-21swapper/210:55:232
3088296992418,3cyclictest0-21swapper/111:15:001
308829299248,10cyclictest131rcu_preempt07:20:180
308829299248,10cyclictest131rcu_preempt07:20:180
308829299247,4cyclictest131rcu_preempt11:45:130
308829299246,10cyclictest11-21ksoftirqd/012:00:150
3088292992418,4cyclictest3114674-21kworker/u8:4+events_unbound08:34:540
3088292992417,3cyclictest0-21swapper/011:29:110
3088292992417,3cyclictest0-21swapper/011:29:110
3088292992417,3cyclictest0-21swapper/008:40:150
3088292992416,4cyclictest0-21swapper/008:25:160
308830599239,8cyclictest131rcu_preempt12:00:313
3088305992314,6cyclictest391ktimers/307:20:163
3088305992314,6cyclictest391ktimers/307:20:153
3088305992314,6cyclictest0-21swapper/310:15:153
3088302992317,3cyclictest0-21swapper/212:10:162
3088302992317,3cyclictest0-21swapper/210:30:172
3088302992317,3cyclictest0-21swapper/210:20:152
3088302992316,3cyclictest0-21swapper/211:10:002
3088302992313,6cyclictest3096393-21/usr/sbin/munin07:30:162
3088296992317,4cyclictest145-21jbd2/mmcblk1p2-808:51:081
3088296992316,4cyclictest0-21swapper/112:35:221
3088305992216,4cyclictest3118105-21kworker/u8:1+events_unbound09:16:593
3088305992216,3cyclictest0-21swapper/310:00:223
3088305992215,4cyclictest3186873-21idleruntime-cro11:55:003
308830599221,12cyclictest0-21swapper/312:38:113
308830599221,11cyclictest0-21swapper/309:22:333
3088302992216,3cyclictest0-21swapper/209:50:152
3088302992216,3cyclictest0-21swapper/207:20:212
3088302992216,3cyclictest0-21swapper/207:20:202
3088302992215,4cyclictest0-21swapper/211:15:142
3088302992215,3cyclictest0-21swapper/209:40:162
3088302992215,3cyclictest0-21swapper/209:40:162
3088302992214,4cyclictest0-21swapper/209:40:012
3088302992211,8cyclictest1-21systemd09:30:242
3088305992114,3cyclictest0-21swapper/307:25:263
3088305992112,6cyclictest3118426-21cron08:35:003
3088302992115,3cyclictest0-21swapper/212:00:202
3088302992114,4cyclictest311ktimers/207:27:272
3088302992113,4cyclictest0-21swapper/209:00:232
3088302992111,6cyclictest0-21swapper/210:00:012
3088305992012,5cyclictest0-21swapper/309:05:203
3088302992014,3cyclictest0-21swapper/211:50:172
3088302992014,3cyclictest0-21swapper/210:10:222
3088302992013,4cyclictest0-21swapper/212:05:112
3088302992012,5cyclictest311ktimers/211:20:202
3088302991912,5cyclictest311ktimers/209:25:202
3088302991911,5cyclictest0-21swapper/207:40:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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