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2026-04-13 - 00:24
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 highest latencies:
System rackbslot7.osadl.org (updated Sun Apr 12, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2887217312,127sleep12920-21cut06:58:451
43519912048,48cyclictest29861-21apt-get11:23:360
43699910164,7cyclictest181rcu_preempt09:08:242
43699910164,7cyclictest181rcu_preempt09:08:242
43519910064,9cyclictest181rcu_preempt11:18:420
4369999776,12cyclictest0-21swapper/207:03:252
4369999573,15cyclictest17842-21kworker/u17:0-xprtiod11:33:532
4362999467,18cyclictest4319-21cyclictest08:03:231
4362999154,7cyclictest181rcu_preempt09:13:051
4362999152,11cyclictest181rcu_preempt09:20:341
4369999043,9cyclictest181rcu_preempt07:18:322
4369999043,9cyclictest181rcu_preempt07:18:322
4362999068,9cyclictest0-21swapper/107:53:201
4351999047,10cyclictest181rcu_preempt07:43:340
4351999047,10cyclictest181rcu_preempt07:43:340
408529014,49sleep04106-21systemd-run07:03:210
4362998962,11cyclictest181rcu_preempt12:29:441
4362998962,11cyclictest181rcu_preempt12:29:441
4351998951,24cyclictest32408-21ssh12:21:250
4351998951,24cyclictest32408-21ssh12:21:250
4369998874,7cyclictest0-21swapper/209:13:462
4369998866,12cyclictest0-21swapper/211:13:552
4351998866,15cyclictest4319-21cyclictest07:38:480
4351998860,8cyclictest181rcu_preempt10:58:280
4351998860,8cyclictest181rcu_preempt10:58:280
4351998837,7cyclictest181rcu_preempt11:08:300
4351998837,7cyclictest181rcu_preempt11:08:300
4369998771,10cyclictest11890-21kworker/u17:1-xprtiod11:47:072
4369998771,10cyclictest11890-21kworker/u17:1-xprtiod11:47:072
4369998762,13cyclictest0-21swapper/210:48:532
4369998762,13cyclictest0-21swapper/210:48:532
4362998764,13cyclictest0-21swapper/109:38:471
4351998739,14cyclictest181rcu_preempt11:17:090
4369998671,8cyclictest0-21swapper/209:48:512
4369998666,11cyclictest0-21swapper/212:28:372
4369998666,11cyclictest0-21swapper/212:28:372
4362998663,13cyclictest0-21swapper/112:13:421
4362998562,12cyclictest0-21swapper/111:58:221
4362998554,11cyclictest181rcu_preempt11:43:221
4362998546,7cyclictest181rcu_preempt10:23:221
4362998546,7cyclictest181rcu_preempt10:23:221
4351998564,17cyclictest4319-21cyclictest11:30:580
4351998553,12cyclictest181rcu_preempt07:53:580
4351998538,35cyclictest27843-21modprobe08:13:200
4351998538,35cyclictest27843-21modprobe08:13:200
4369998453,9cyclictest181rcu_preempt10:43:482
4369998452,8cyclictest181rcu_preempt07:30:102
4369998441,8cyclictest181rcu_preempt07:08:412
4369998438,19cyclictest15882-21kworker/u18:1-events_unbound11:10:192
4369998438,19cyclictest15882-21kworker/u18:1-events_unbound11:10:192
4369998432,11cyclictest181rcu_preempt10:23:322
4362998463,12cyclictest0-21swapper/111:03:551
4362998461,16cyclictest297-21systemd-logind09:33:201
4351998451,16cyclictest181rcu_preempt10:48:120
4351998449,7cyclictest181rcu_preempt10:03:090
4351998449,7cyclictest181rcu_preempt10:03:090
4351998437,16cyclictest0-21swapper/010:09:100
4351998437,16cyclictest0-21swapper/010:09:100
4369998366,8cyclictest0-21swapper/212:03:402
4369998354,13cyclictest181rcu_preempt09:23:352
4362998365,13cyclictest10156-21unixbench_multi09:53:551
4362998363,14cyclictest14727-21latency_hist10:03:241
4362998363,14cyclictest14727-21latency_hist10:03:241
4362998362,12cyclictest0-21swapper/110:43:451
4362998351,8cyclictest181rcu_preempt11:12:541
4362998351,8cyclictest181rcu_preempt11:12:541
4362998329,19cyclictest0-21swapper/107:08:241
4362998329,19cyclictest0-21swapper/107:08:241
4351998358,19cyclictest12511-21sh09:03:500
4351998358,19cyclictest12511-21sh09:03:500
4351998353,25cyclictest0-21swapper/011:58:190
4351998352,23cyclictest10025-21latency_hist08:58:220
4351998348,14cyclictest181rcu_preempt07:04:370
4351998348,14cyclictest181rcu_preempt07:04:370
4351998346,7cyclictest181rcu_preempt12:08:210
4351998345,7cyclictest181rcu_preempt08:48:500
4351998322,17cyclictest0-21swapper/010:53:560
4369998261,11cyclictest0-21swapper/209:58:482
4369998261,11cyclictest0-21swapper/209:58:482
4362998262,13cyclictest0-21swapper/109:13:541
4362998261,12cyclictest0-21swapper/110:58:441
4362998261,12cyclictest0-21swapper/110:58:441
4362998248,7cyclictest181rcu_preempt07:22:341
4362998248,7cyclictest181rcu_preempt07:22:341
4362998246,9cyclictest181rcu_preempt08:28:201
4362998240,30cyclictest22774-21modprobe07:58:201
4351998247,7cyclictest181rcu_preempt09:43:470
4351998241,8cyclictest181rcu_preempt08:58:430
4369998167,8cyclictest0-21swapper/209:18:522
4369998162,9cyclictest0-21swapper/208:08:202
4369998161,11cyclictest0-21swapper/208:33:562
4369998161,11cyclictest0-21swapper/208:33:562
4369998160,11cyclictest0-21swapper/208:43:522
4369998157,11cyclictest0-21swapper/208:23:442
4369998141,9cyclictest181rcu_preempt11:23:492
4369998138,18cyclictest6056-21runrttasks10:42:572
4369998138,18cyclictest6056-21runrttasks10:42:572
4369998130,7cyclictest181rcu_preempt11:38:342
4362998160,11cyclictest0-21swapper/110:32:271
4362998157,13cyclictest0-21swapper/107:28:231
4362998154,7cyclictest181rcu_preempt10:33:391
4362998152,7cyclictest181rcu_preempt09:26:131
4351998160,14cyclictest4319-21cyclictest09:33:450
4351998160,12cyclictest0-21swapper/007:08:470
4351998153,11cyclictest181rcu_preempt09:27:540
4351998150,20cyclictest0-21swapper/012:08:410
4351998146,7cyclictest181rcu_preempt07:59:140
4351998146,28cyclictest0-21swapper/011:48:220
4351998146,28cyclictest0-21swapper/011:48:220
4351998145,7cyclictest181rcu_preempt09:54:370
4351998129,19cyclictest0-21swapper/009:18:370
4351998124,33cyclictest0-21swapper/012:23:550
4369998061,10cyclictest0-21swapper/212:08:412
4362998063,11cyclictest4319-21cyclictest11:33:191
4362998053,16cyclictest181rcu_preempt11:58:351
4362998029,18cyclictest0-21swapper/107:39:001
4351998054,7cyclictest181rcu_preempt11:33:230
4351998049,7cyclictest181rcu_preempt12:13:510
4351998046,8cyclictest181rcu_preempt09:16:370
4351998044,8cyclictest181rcu_preempt12:31:280
4351998044,8cyclictest181rcu_preempt12:31:280
4351998041,9cyclictest181rcu_preempt10:13:370
4369997964,8cyclictest0-21swapper/209:43:392
4369997958,10cyclictest0-21swapper/209:38:552
4362997960,7cyclictest181rcu_preempt10:09:161
4362997960,7cyclictest181rcu_preempt10:09:161
4362997956,11cyclictest181rcu_preempt09:03:421
4362997956,11cyclictest181rcu_preempt09:03:421
4362997952,19cyclictest8296-21modprobe08:53:191
4362997951,11cyclictest181rcu_preempt10:13:251
4362997949,12cyclictest181rcu_preempt09:33:361
4351997959,11cyclictest0-21swapper/010:38:220
4351997951,19cyclictest5088-21cron08:43:190
4351997945,9cyclictest181rcu_preempt11:48:530
4351997945,8cyclictest181rcu_preempt10:50:340
4351997945,8cyclictest181rcu_preempt10:50:340
4351997945,8cyclictest181rcu_preempt07:13:420
4351997938,11cyclictest181rcu_preempt10:41:100
4351997938,11cyclictest181rcu_preempt10:41:100
4351997933,15cyclictest0-21swapper/009:29:380
4369997860,9cyclictest0-21swapper/210:08:372
4369997860,9cyclictest0-21swapper/210:08:372
4369997859,9cyclictest0-21swapper/210:04:002
4369997859,9cyclictest0-21swapper/210:04:002
4362997863,10cyclictest24950-21processes11:13:521
4362997857,8cyclictest181rcu_preempt10:08:301
4362997857,8cyclictest181rcu_preempt10:08:301
4362997855,14cyclictest0-21swapper/108:13:371
4362997849,8cyclictest181rcu_preempt09:45:011
4362997846,7cyclictest181rcu_preempt11:43:371
4362997846,7cyclictest181rcu_preempt11:43:371
4351997862,11cyclictest4319-21cyclictest09:48:370
4351997860,7cyclictest181rcu_preempt11:59:230
4351997858,10cyclictest0-21swapper/008:43:540
4351997852,13cyclictest181rcu_preempt10:18:420
4351997852,13cyclictest181rcu_preempt10:18:420
4351997834,7cyclictest181rcu_preempt07:18:510
4351997834,7cyclictest181rcu_preempt07:18:510
4369997759,11cyclictest0-21swapper/210:33:432
4369997758,10cyclictest0-21swapper/210:28:502
4369997741,11cyclictest15657-21sensors_temp09:08:552
4369997740,11cyclictest181rcu_preempt12:18:332
4369997740,11cyclictest181rcu_preempt12:18:332
4362997761,9cyclictest0-21swapper/111:18:431
4362997758,10cyclictest0-21swapper/112:08:561
4362997757,8cyclictest181rcu_preempt08:38:431
4362997751,7cyclictest181rcu_preempt07:13:431
4362997745,8cyclictest181rcu_preempt07:43:451
4362997745,8cyclictest181rcu_preempt07:43:451
4362997745,7cyclictest181rcu_preempt12:03:421
4362997743,11cyclictest181rcu_preempt10:23:541
4351997743,12cyclictest181rcu_preempt11:03:390
4351997739,7cyclictest181rcu_preempt09:41:350
4369997659,10cyclictest0-21swapper/211:03:412
4369997634,19cyclictest30537-21timerandwakeup08:18:552
4369997629,8cyclictest181rcu_preempt11:23:192
4362997661,8cyclictest0-21swapper/112:24:301
4362997647,8cyclictest181rcu_preempt10:41:591
4362997647,8cyclictest181rcu_preempt10:41:591
4362997647,8cyclictest181rcu_preempt07:39:081
4362997647,8cyclictest181rcu_preempt07:39:081
4351997655,14cyclictest18093-21latency_hist07:43:230
4351997655,14cyclictest18093-21latency_hist07:43:230
4351997649,7cyclictest181rcu_preempt08:18:520
4351997638,7cyclictest181rcu_preempt10:05:180
4351997638,7cyclictest181rcu_preempt10:05:180
4351997636,17cyclictest1636-21kworker/u19:1-writeback11:38:550
4351997633,18cyclictest0-21swapper/008:13:440
4351997625,19cyclictest0-21swapper/009:11:380
4369997557,10cyclictest0-21swapper/209:53:412
4369997555,10cyclictest0-21swapper/211:53:412
4362997558,12cyclictest703-21latency_hist12:23:211
4362997558,12cyclictest703-21latency_hist12:23:211
4362997554,11cyclictest0-21swapper/108:23:221
4362997550,8cyclictest181rcu_preempt08:10:201
4362997550,8cyclictest181rcu_preempt08:10:201
4362997547,7cyclictest181rcu_preempt09:03:211
4362997543,8cyclictest181rcu_preempt11:27:151
4362997529,21cyclictest0-21swapper/107:29:321
4362997524,18cyclictest0-21swapper/108:53:431
4351997556,7cyclictest181rcu_preempt08:28:420
4351997545,7cyclictest181rcu_preempt07:33:220
4351997543,7cyclictest181rcu_preempt08:23:430
4351997540,15cyclictest181rcu_preempt10:31:460
4351997538,10cyclictest181rcu_preempt10:23:290
4369997456,9cyclictest0-21swapper/212:24:112
4369997450,8cyclictest181rcu_preempt08:28:362
4369997440,18cyclictest58-21kcompactd008:55:112
4369997439,12cyclictest24064-21switchtime07:59:362
4369997439,11cyclictest170-21jbd2/mmcblk2p2-811:51:442
4369997436,12cyclictest4319-21cyclictest08:43:142
4362997456,9cyclictest0-21swapper/109:48:411
4362997444,7cyclictest181rcu_preempt10:55:571
105342740,7sleep20-21swapper/208:58:452
4362997351,11cyclictest0-21swapper/108:28:551
4362997344,8cyclictest181rcu_preempt10:48:441
4362997344,8cyclictest181rcu_preempt10:48:441
4362997338,19cyclictest58-21kcompactd008:33:421
4362997338,19cyclictest58-21kcompactd008:33:421
4351997334,20cyclictest0-21swapper/007:48:410
4369997253,9cyclictest0-21swapper/207:48:232
4369997253,9cyclictest0-21swapper/207:48:232
4362997257,11cyclictest4319-21cyclictest08:08:221
4362997254,8cyclictest0-21swapper/111:33:561
4351997247,8cyclictest181rcu_preempt08:33:540
4351997247,8cyclictest181rcu_preempt08:33:540
4351997247,17cyclictest0-21swapper/007:23:420
4369997151,8cyclictest181rcu_preempt07:04:372
4369997151,8cyclictest181rcu_preempt07:04:372
4369997140,7cyclictest181rcu_preempt12:13:502
4369997136,10cyclictest2886-21kworker/u18:0-rpciod10:55:342
4362997151,15cyclictest19676-21snmpd11:48:521
4369997054,7cyclictest0-21swapper/207:48:402
4369997036,14cyclictest0-21swapper/211:30:102
4369997026,8cyclictest181rcu_preempt07:33:552
296592700,11sleep2381ktimers/208:18:232
4369996953,10cyclictest0-21swapper/207:23:562
4369996934,11cyclictest58-21kcompactd007:53:282
4369996929,10cyclictest0-21swapper/207:13:502
4362996952,9cyclictest0-21swapper/108:48:211
4351996950,14cyclictest2952-21systemd-journal08:04:360
4369996850,12cyclictest11558-21diskmemload10:58:482
4369996850,12cyclictest11558-21diskmemload10:58:482
4369996841,8cyclictest27404-21kworker/u19:3+rpciod10:23:062
4369996841,8cyclictest27404-21kworker/u19:3+rpciod10:23:062
4369996840,20cyclictest30242-21sort09:33:452
4369996835,8cyclictest0-21swapper/211:58:292
4369996828,8cyclictest0-21swapper/210:13:512
4362996845,7cyclictest181rcu_preempt07:08:581
4369996743,7cyclictest181rcu_preempt09:28:272
147462660,7sleep30-21swapper/307:33:213
4369996527,8cyclictest0-21swapper/207:40:432
4369996527,8cyclictest0-21swapper/207:40:432
4369996430,8cyclictest181rcu_preempt08:08:462
4369996430,8cyclictest181rcu_preempt08:08:462
4369996423,8cyclictest0-21swapper/208:48:302
42332630,7sleep30-21swapper/312:28:443
42332630,7sleep30-21swapper/312:28:443
278002620,9sleep30-21swapper/309:28:573
209032580,5sleep30-21swapper/310:13:193
209032580,5sleep30-21swapper/310:13:193
181152580,11sleep30-21swapper/309:13:413
404125010,24sleep30-21swapper/307:03:203
437499492,20cyclictest30457-21chrt11:23:393
437499473,31cyclictest11845-21taskset09:03:273
437499473,31cyclictest11845-21taskset09:03:273
437499453,28cyclictest3505-21taskset10:38:253
437499453,28cyclictest3505-21taskset10:38:253
437499452,31cyclictest24541-21taskset12:08:343
437499452,27cyclictest917-21kworker/3:1+events11:43:303
437499452,27cyclictest917-21kworker/3:1+events11:43:303
48552448,27sleep30-21swapper/307:04:423
48552448,27sleep30-21swapper/307:04:423
437499444,30cyclictest28598-21taskset12:13:573
437499444,27cyclictest28150-21taskset08:13:343
437499443,31cyclictest25215-21chrt09:24:523
437499443,31cyclictest15442-21taskset10:03:593
437499443,31cyclictest15442-21taskset10:03:593
437499443,30cyclictest32107-21taskset12:20:343
437499443,30cyclictest32107-21taskset12:20:343
437499443,29cyclictest3751-21taskset08:38:333
437499443,29cyclictest18206-21taskset07:43:333
437499443,29cyclictest18206-21taskset07:43:333
437499443,29cyclictest12057-21taskset09:58:283
437499443,29cyclictest12057-21taskset09:58:283
437499443,28cyclictest15357-21taskset09:08:473
437499442,29cyclictest25572-21taskset08:03:543
437499434,30cyclictest3593-21chrt12:28:203
437499434,29cyclictest25182-21taskset10:18:553
437499434,29cyclictest25182-21taskset10:18:553
437499433,30cyclictest22694-21taskset09:21:073
437499433,29cyclictest10356-21taskset07:18:463
437499433,29cyclictest10356-21taskset07:18:463
437499433,28cyclictest876-21taskset11:28:303
437499433,28cyclictest8301-21taskset07:13:323
437499433,28cyclictest10185-21taskset08:58:253
437499433,27cyclictest17397-21chrt07:39:083
437499433,27cyclictest17397-21chrt07:39:083
437499432,31cyclictest16775-21taskset07:38:563
437499432,30cyclictest7668-21taskset07:09:193
437499432,30cyclictest633-21chrt10:33:343
437499432,30cyclictest30094-21taskset08:18:443
437499424,29cyclictest17968-21taskset11:57:153
437499423,29cyclictest31423-21taskset09:35:343
437499423,29cyclictest30126-21taskset10:28:363
437499423,29cyclictest23291-21chrt07:58:323
437499423,29cyclictest21300-21taskset12:03:193
437499423,29cyclictest21230-21chrt10:13:363
437499423,29cyclictest16144-21taskset10:58:513
437499423,29cyclictest16144-21taskset10:58:513
437499423,28cyclictest3814-21taskset11:33:243
437499423,28cyclictest19778-21taskset07:48:233
437499423,28cyclictest12907-21taskset11:48:403
437499423,27cyclictest9454-21chrt10:48:303
437499423,27cyclictest9454-21chrt10:48:303
437499423,27cyclictest6971-21taskset08:48:333
437499422,30cyclictest8751-21chrt08:53:393
437499422,30cyclictest6234-21taskset08:43:553
437499422,29cyclictest9156-21taskset09:53:333
437499422,28cyclictest27210-21chrt11:18:283
437499414,26cyclictest21535-21taskset12:03:233
437499413,28cyclictest6540-21chrt10:43:353
437499413,28cyclictest6195-21taskset09:48:353
437499413,28cyclictest27338-21chrt10:23:413
437499413,28cyclictest22799-21taskset07:58:203
437499413,28cyclictest1486-21taskset08:28:573
437499413,27cyclictest6828-21taskset11:38:313
437499413,27cyclictest21225-21taskset11:08:233
437499413,27cyclictest21225-21taskset11:08:233
437499413,27cyclictest18947-21taskset11:03:493
437499413,26cyclictest31328-21chrt08:23:263
437499413,25cyclictest15247-21taskset10:58:223
437499412,30cyclictest25854-21chrt11:15:203
437499412,29cyclictest4492-21taskset09:44:253
437499412,24cyclictest27556-21chrt08:09:493
437499412,24cyclictest27556-21chrt08:09:493
437499402,27cyclictest2115-21taskset08:33:263
437499402,27cyclictest2115-21taskset08:33:263
437499402,27cyclictest11513-21taskset07:23:323
437499402,25cyclictest32711-21taskset09:38:303
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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