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2026-06-18 - 08:13
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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 all highest latencies:
System rackbslot7.osadl.org (updated Thu Jun 18, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11741213715,87sleep211761-21unin-run18:58:542
11826991293,88cyclictest20294-21ssh22:49:070
11826991293,88cyclictest20294-21ssh22:49:070
1147221286,16sleep00-21swapper/018:55:580
118319911390,16cyclictest0-21swapper/121:19:281
118319911390,16cyclictest0-21swapper/121:19:281
359721020,7sleep30-21swapper/321:27:143
118359910285,9cyclictest0-21swapper/200:10:042
118319910186,8cyclictest0-21swapper/123:09:271
247022980,9sleep224701-21ssh23:49:462
247022980,9sleep224701-21ssh23:49:462
11826999663,12cyclictest181rcu_preempt19:34:050
1182699953,69cyclictest11341-21apt-get23:29:080
11835999477,11cyclictest352-21runrttasks22:30:552
11826999343,9cyclictest181rcu_preempt21:58:330
11826999343,9cyclictest181rcu_preempt21:58:330
1182699928,61cyclictest4024-21apt-get00:09:060
11835999064,17cyclictest11818-21cyclictest23:40:132
11835999064,17cyclictest11818-21cyclictest23:40:132
11826999064,16cyclictest15308-21ssh21:46:340
11826999052,18cyclictest181rcu_preempt21:11:480
11826999052,18cyclictest181rcu_preempt21:11:480
1182699899,71cyclictest23717-21apt-get23:49:100
1182699899,71cyclictest23717-21apt-get23:49:100
11831998863,17cyclictest2035-21latency_hist22:18:561
11826998853,12cyclictest181rcu_preempt19:08:540
11826998846,9cyclictest181rcu_preempt20:38:530
11826998833,12cyclictest181rcu_preempt00:07:060
11831998769,9cyclictest20729-21cron23:43:501
11831998769,9cyclictest20729-21cron23:43:501
11835998670,10cyclictest8072-21ntp_kernel_pll_21:34:182
11826998646,8cyclictest181rcu_preempt19:59:130
1171128611,50sleep111721-21munin-run18:58:531
11826998555,8cyclictest181rcu_preempt20:18:540
11826998547,12cyclictest181rcu_preempt00:27:260
11835998464,14cyclictest25891-21sh21:09:262
11835998464,14cyclictest25891-21sh21:09:262
11835998464,13cyclictest29071-21latency_hist23:03:552
11835998448,9cyclictest181rcu_preempt21:18:492
11835998447,9cyclictest181rcu_preempt20:52:552
11835998447,10cyclictest181rcu_preempt22:40:022
11835998445,8cyclictest181rcu_preempt21:01:402
11831998465,11cyclictest11818-21cyclictest22:54:251
11826998462,8cyclictest181rcu_preempt22:14:240
11826998451,24cyclictest5605-21latency_hist23:18:550
11826998447,13cyclictest181rcu_preempt19:24:190
11826998441,14cyclictest181rcu_preempt23:05:170
11826998439,9cyclictest181rcu_preempt21:39:240
11826998435,9cyclictest0-21swapper/022:29:560
11835998362,12cyclictest0-21swapper/223:24:252
11835998362,12cyclictest0-21swapper/223:24:252
11835998352,9cyclictest181rcu_preempt23:45:192
11835998341,10cyclictest0-21swapper/221:58:552
11835998341,10cyclictest0-21swapper/221:58:552
11831998364,9cyclictest0-21swapper/122:04:161
11831998364,9cyclictest0-21swapper/122:04:161
11826998359,9cyclictest181rcu_preempt23:42:540
11826998359,9cyclictest181rcu_preempt23:42:540
11826998347,13cyclictest181rcu_preempt20:19:080
11826998333,36cyclictest0-21swapper/021:59:090
11835998266,11cyclictest2374-21systemd-journal21:51:062
11835998261,11cyclictest0-21swapper/220:34:132
11835998245,8cyclictest181rcu_preempt22:44:132
11831998233,10cyclictest181rcu_preempt20:48:541
11826998262,7cyclictest181rcu_preempt22:20:260
11826998255,12cyclictest181rcu_preempt20:49:160
11826998248,9cyclictest181rcu_preempt21:49:580
11826998247,13cyclictest181rcu_preempt19:14:240
11826998247,13cyclictest181rcu_preempt19:14:240
1182699823,46cyclictest28584-21taskset21:14:220
11826998223,18cyclictest0-21swapper/022:24:160
11835998166,10cyclictest1598-21switchtime00:04:272
11835998162,9cyclictest0-21swapper/220:13:552
11835998157,15cyclictest2374-21systemd-journal21:20:172
11835998157,15cyclictest2374-21systemd-journal21:20:172
11835998156,8cyclictest181rcu_preempt23:32:412
11835998153,7cyclictest181rcu_preempt23:38:352
11831998159,16cyclictest7895-21ssh21:34:151
11826998150,12cyclictest181rcu_preempt22:44:130
11826998149,16cyclictest181rcu_preempt23:46:230
11826998147,12cyclictest181rcu_preempt19:54:230
11835998061,10cyclictest0-21swapper/222:50:132
11835998061,10cyclictest0-21swapper/222:50:132
11835998057,7cyclictest181rcu_preempt22:19:412
11835998047,7cyclictest181rcu_preempt21:05:482
11835998042,8cyclictest181rcu_preempt22:17:102
1183599803,37cyclictest39-21ksoftirqd/219:24:352
11831998065,8cyclictest0-21swapper/122:39:281
11826998059,8cyclictest181rcu_preempt18:59:260
11826998056,7cyclictest181rcu_preempt22:34:090
11826998051,8cyclictest181rcu_preempt21:03:170
11826998044,8cyclictest181rcu_preempt23:27:390
11826998044,8cyclictest181rcu_preempt23:27:390
11826998038,27cyclictest0-21swapper/023:35:140
11826998029,9cyclictest0-21swapper/020:09:150
11826998025,8cyclictest0-21swapper/020:44:260
11835997963,9cyclictest0-21swapper/200:14:142
11835997954,7cyclictest181rcu_preempt22:00:432
11835997952,10cyclictest181rcu_preempt00:26:452
11835997951,9cyclictest181rcu_preempt21:26:082
11835997951,7cyclictest181rcu_preempt21:46:012
11835997951,22cyclictest18752-21latency_hist19:18:542
11835997951,22cyclictest18752-21latency_hist19:18:542
11835997946,7cyclictest181rcu_preempt21:32:102
11831997963,11cyclictest16446-21/usr/sbin/munin21:49:191
11831997961,9cyclictest0-21swapper/123:19:071
11826997950,13cyclictest181rcu_preempt22:39:230
11826997947,19cyclictest181rcu_preempt00:16:060
11826997942,14cyclictest181rcu_preempt21:20:350
11826997942,14cyclictest181rcu_preempt21:20:350
11826997942,10cyclictest29093-21ntp_kernel_pll_19:49:190
11826997942,10cyclictest29093-21ntp_kernel_pll_19:49:190
11826997918,18cyclictest0-21swapper/022:58:070
11835997862,10cyclictest9063-21systemd-run20:28:532
11835997862,10cyclictest9063-21systemd-run20:28:532
11835997861,10cyclictest0-21swapper/222:34:132
11835997851,7cyclictest181rcu_preempt23:57:282
11835997851,7cyclictest181rcu_preempt23:08:552
11835997847,7cyclictest181rcu_preempt22:06:152
11835997847,7cyclictest181rcu_preempt22:06:152
11835997837,8cyclictest181rcu_preempt20:44:132
11831997855,13cyclictest0-21swapper/121:39:111
11831997850,21cyclictest6473-21kworker/u18:1+nfsiod00:13:311
11831997824,32cyclictest31-21ksoftirqd/123:17:511
11826997855,11cyclictest181rcu_preempt23:23:340
11826997839,11cyclictest181rcu_preempt21:29:170
11826997837,11cyclictest25681-21if_err_eth019:39:160
11826997837,11cyclictest181rcu_preempt20:26:080
11826997837,11cyclictest181rcu_preempt20:26:080
11826997835,10cyclictest181rcu_preempt22:08:450
11826997835,10cyclictest181rcu_preempt22:08:450
11835997750,8cyclictest181rcu_preempt21:42:132
11835997749,9cyclictest181rcu_preempt23:05:392
11835997749,6cyclictest181rcu_preempt19:12:132
11835997747,8cyclictest181rcu_preempt23:22:112
11835997746,7cyclictest181rcu_preempt22:55:062
11835997743,7cyclictest181rcu_preempt18:59:092
11831997758,9cyclictest0-21swapper/123:24:251
11831997758,9cyclictest0-21swapper/123:24:251
11831997757,10cyclictest0-21swapper/119:29:141
11831997718,18cyclictest0-21swapper/123:44:041
11826997739,11cyclictest11818-21cyclictest20:08:550
11826997736,13cyclictest181rcu_preempt21:24:260
11826997715,32cyclictest0-21swapper/021:05:460
11835997646,8cyclictest181rcu_preempt20:14:332
11831997661,9cyclictest11818-21cyclictest23:50:081
11831997661,9cyclictest11818-21cyclictest23:50:081
11831997657,13cyclictest0-21swapper/120:13:561
11831997656,10cyclictest0-21swapper/123:54:281
11831997656,10cyclictest0-21swapper/123:34:581
11831997623,31cyclictest31-21ksoftirqd/121:57:531
11831997623,31cyclictest31-21ksoftirqd/121:57:531
11831997623,29cyclictest31-21ksoftirqd/121:15:031
11831997622,27cyclictest17475-21cat19:14:121
11831997622,27cyclictest17475-21cat19:14:121
11826997646,11cyclictest181rcu_preempt19:09:180
11826997645,10cyclictest181rcu_preempt20:33:520
11826997645,10cyclictest181rcu_preempt20:33:520
11826997642,12cyclictest181rcu_preempt23:59:260
11826997641,10cyclictest181rcu_preempt19:29:270
11826997640,12cyclictest181rcu_preempt23:00:500
11826997638,11cyclictest11818-21cyclictest00:21:190
1182699763,30cyclictest18720-21latency_hist20:58:540
11826997620,26cyclictest0-21swapper/023:54:210
11835997550,7cyclictest181rcu_preempt20:04:252
11835997548,10cyclictest181rcu_preempt23:15:432
11835997544,7cyclictest181rcu_preempt19:49:082
11835997544,7cyclictest181rcu_preempt19:49:082
1183599754,30cyclictest39-21ksoftirqd/219:39:102
11835997510,24cyclictest39-21ksoftirqd/220:03:362
11831997555,10cyclictest0-21swapper/122:48:101
11826997518,8cyclictest0-21swapper/020:39:130
11835997461,7cyclictest0-21swapper/219:04:152
11835997459,9cyclictest31372-21ssh23:59:312
11835997459,9cyclictest27189-21fschecks_time19:44:142
11835997450,7cyclictest181rcu_preempt22:24:412
11831997458,9cyclictest0-21swapper/120:59:231
11831997458,10cyclictest13297-21unixbench_singl23:30:251
11831997458,10cyclictest12926-21/usr/sbin/munin00:24:181
11831997458,10cyclictest12007-21/usr/sbin/munin18:59:241
11831997455,9cyclictest0-21swapper/120:43:541
11826997438,12cyclictest181rcu_preempt23:09:150
11835997349,7cyclictest181rcu_preempt19:34:072
11835997347,7cyclictest181rcu_preempt19:31:172
11835997346,8cyclictest181rcu_preempt22:10:502
11831997358,9cyclictest23508-21unixbench_singl21:59:301
11831997357,9cyclictest0-21swapper/119:09:151
11831997354,9cyclictest0-21swapper/100:04:281
11826997343,8cyclictest181rcu_preempt22:09:130
11826997340,14cyclictest181rcu_preempt19:44:290
11826997338,12cyclictest181rcu_preempt19:19:140
11826997338,12cyclictest181rcu_preempt19:19:140
11826997320,23cyclictest0-21swapper/021:35:410
11835997258,10cyclictest11818-21cyclictest20:58:562
11835997245,7cyclictest181rcu_preempt19:19:222
11835997245,7cyclictest181rcu_preempt19:19:222
11835997245,7cyclictest181rcu_preempt00:21:302
11831997253,13cyclictest17041-21sshd20:53:061
11831997251,14cyclictest455-21latency_hist00:03:531
11835997046,7cyclictest181rcu_preempt20:41:172
11835997043,7cyclictest181rcu_preempt20:19:152
11831997054,11cyclictest803-21sendmail-mta22:31:061
11831997053,7cyclictest0-21swapper/122:59:181
11831997052,10cyclictest0-21swapper/122:49:061
11831997052,10cyclictest0-21swapper/122:49:061
11831997038,23cyclictest25380-21ls21:09:141
11831997038,23cyclictest25380-21ls21:09:141
11831997035,25cyclictest31-21ksoftirqd/100:17:591
11831997024,9cyclictest301ktimers/100:21:001
1183199693,32cyclictest31-21ksoftirqd/121:25:271
11831996918,27cyclictest31-21ksoftirqd/123:06:351
11835996834,8cyclictest181rcu_preempt19:56:502
11831996849,13cyclictest373-21lldpd22:34:131
11831996847,16cyclictest2605-21fschecks_time22:19:461
1183199682,33cyclictest31-21ksoftirqd/121:45:131
11831996736,21cyclictest5794-21sh20:18:511
1183199673,27cyclictest31-21ksoftirqd/121:29:341
11831996725,19cyclictest31-21ksoftirqd/121:06:541
11835996645,13cyclictest0-21swapper/220:29:132
11835996645,13cyclictest0-21swapper/220:29:132
11831996649,9cyclictest0-21swapper/122:24:201
11831996648,11cyclictest6039-21/usr/sbin/munin20:19:171
1183199664,27cyclictest31-21ksoftirqd/122:11:281
11831996634,24cyclictest20297-21cat19:23:531
11831996634,24cyclictest20297-21cat19:23:531
1183199662,36cyclictest25536-21fschecks_count19:39:141
11831996446,11cyclictest7648-21/usr/sbin/munin20:24:201
11831996446,11cyclictest7648-21/usr/sbin/munin20:24:201
11831996436,22cyclictest170-21jbd2/mmcblk2p2-819:54:121
11831996429,25cyclictest32298-21ntp_kernel_err19:59:191
1183199632,46cyclictest17647-21fschecks_time20:54:131
1183199632,25cyclictest29891-21runrttasks19:53:191
1183199632,25cyclictest29891-21runrttasks19:53:191
11831996319,8cyclictest301ktimers/119:24:251
1183199622,26cyclictest31-21ksoftirqd/120:06:431
1183199615,26cyclictest31-21ksoftirqd/120:29:221
1183199615,26cyclictest31-21ksoftirqd/120:29:221
1183199614,26cyclictest31-21ksoftirqd/120:34:211
11831996130,10cyclictest181rcu_preempt19:35:191
11831996129,9cyclictest181rcu_preempt19:44:391
1091326113,33sleep30-21swapper/318:54:313
11842996047,9cyclictest451rcuc/321:37:573
11842996044,10cyclictest53122sleep321:29:263
11842995944,9cyclictest451rcuc/321:50:453
11831995935,7cyclictest181rcu_preempt19:04:511
11842995744,8cyclictest451rcuc/323:25:513
11842995744,8cyclictest451rcuc/323:25:513
11842995743,9cyclictest451rcuc/321:19:413
11842995743,9cyclictest451rcuc/321:19:413
11842995743,9cyclictest451rcuc/318:59:073
11842995643,9cyclictest451rcuc/323:00:473
11842995643,9cyclictest451rcuc/320:29:173
11842995643,9cyclictest451rcuc/320:29:173
11842995542,8cyclictest451rcuc/300:08:163
11842995541,9cyclictest451rcuc/322:28:523
11842995541,10cyclictest451rcuc/323:29:573
11842995540,8cyclictest451rcuc/323:22:183
11842995539,9cyclictest39702sleep300:08:563
11842995338,8cyclictest451rcuc/320:17:003
11842995239,8cyclictest451rcuc/323:49:353
11842995239,8cyclictest451rcuc/323:49:353
209682510,6sleep30-21swapper/319:24:183
11842995138,9cyclictest451rcuc/321:10:133
11842995138,9cyclictest451rcuc/321:10:133
11842995137,9cyclictest451rcuc/319:09:123
11842995137,10cyclictest451rcuc/319:50:563
11842995137,10cyclictest451rcuc/319:50:563
11842995037,9cyclictest451rcuc/300:22:063
11842995035,10cyclictest451rcuc/300:18:173
11842994934,9cyclictest451rcuc/322:13:123
11842994933,9cyclictest451rcuc/300:01:463
11842994836,8cyclictest451rcuc/323:36:423
11842994836,8cyclictest451rcuc/322:07:483
11842994836,8cyclictest451rcuc/322:07:483
11842994835,9cyclictest451rcuc/320:41:523
11842994835,8cyclictest451rcuc/322:14:583
1184299483,33cyclictest27299-21taskset23:54:043
1184299474,33cyclictest14514-21taskset19:04:213
11842994734,9cyclictest451rcuc/319:35:533
1184299473,35cyclictest23088-21taskset21:59:253
11842994633,8cyclictest451rcuc/321:39:113
1184299463,34cyclictest2724-21taskset23:14:033
1184299463,31cyclictest2585-21taskset20:08:583
1184299457,26cyclictest25985-21chrt19:39:253
1184299454,31cyclictest29574-21chrt23:04:143
1184299454,31cyclictest21448-21taskset22:50:243
1184299454,31cyclictest21448-21taskset22:50:243
1184299453,33cyclictest25633-21taskset22:58:063
1184299453,33cyclictest10917-21taskset20:34:063
1184299453,32cyclictest19320-21taskset20:59:133
1184299453,29cyclictest2138-21taskset22:19:023
11842994532,7cyclictest0-21swapper/320:54:043
11842994531,10cyclictest451rcuc/321:05:183
11842994531,10cyclictest451rcuc/320:44:283
1184299452,33cyclictest19973-21taskset21:54:183
1184299452,33cyclictest19973-21taskset21:54:183
1184299443,32cyclictest28651-21chrt21:14:263
11842994430,9cyclictest451rcuc/320:20:543
11842994428,9cyclictest451rcuc/320:06:273
1184299442,32cyclictest17708-21taskset22:44:243
1184299442,30cyclictest14194-21taskset21:44:253
1184299442,30cyclictest14020-21chrt22:38:573
1184299436,28cyclictest8507-21taskset22:29:163
1184299434,29cyclictest20679-21taskset23:43:423
1184299434,29cyclictest20679-21taskset23:43:423
1184299433,30cyclictest18645-21chrt19:18:513
1184299433,30cyclictest18645-21chrt19:18:513
1184299433,30cyclictest12863-21chrt22:36:213
1184299433,27cyclictest12904-21taskset00:23:563
11842994330,9cyclictest451rcuc/320:49:103
11842994330,9cyclictest451rcuc/320:25:123
11842994330,9cyclictest451rcuc/320:25:123
11842994328,10cyclictest451rcuc/319:47:283
1184299432,32cyclictest30567-21taskset19:54:163
1184299432,30cyclictest487-21chrt23:09:253
1184299423,30cyclictest22722-21taskset23:46:063
1184299423,29cyclictest32099-21chrt19:59:143
1184299423,26cyclictest22156-21taskset19:29:043
1184299412,29cyclictest19274-21chrt19:19:163
1184299412,29cyclictest19274-21chrt19:19:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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