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2026-05-17 - 03:52
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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 May 17, 2026 00:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27951214010,102sleep00-21swapper/018:56:280
2788521229,73sleep127887-21diskstats18:56:251
292009911956,13cyclictest0-21swapper/122:51:021
292009911956,13cyclictest0-21swapper/122:51:021
1539221130,5sleep115366-21ssh00:01:041
292009910442,18cyclictest12409-21latency_hist23:56:031
292009910346,15cyclictest20146-21http22:21:051
291919910040,36cyclictest24784-21ssh21:33:240
2920099962,47cyclictest5778-21apt-get22:51:161
2920099962,47cyclictest5778-21apt-get22:51:161
2879329439,16sleep2181rcu_preempt18:57:452
29191999347,20cyclictest3356-21kworker/u18:2-events_unbound19:21:050
29191999267,17cyclictest13351-21latency_hist21:16:050
29191999049,8cyclictest181rcu_preempt19:06:040
29204998968,15cyclictest14776-21runrttasks23:59:402
29204998950,19cyclictest0-21swapper/222:09:242
29204998846,18cyclictest29183-21cyclictest21:48:452
29204998846,18cyclictest29183-21cyclictest21:48:452
29191998860,8cyclictest181rcu_preempt19:07:370
29191998859,21cyclictest0-21swapper/023:49:390
2919199883,42cyclictest15-21ksoftirqd/023:26:150
29204998769,13cyclictest29183-21cyclictest22:06:012
29204998743,8cyclictest181rcu_preempt00:06:022
29191998769,11cyclictest0-21swapper/022:41:310
29204998664,9cyclictest181rcu_preempt19:36:232
29204998640,9cyclictest181rcu_preempt23:11:002
2921199853,35cyclictest0-21swapper/322:51:273
2921199853,35cyclictest0-21swapper/322:51:273
29204998561,12cyclictest0-21swapper/220:46:032
29204998469,10cyclictest29183-21cyclictest19:26:042
29191998462,11cyclictest0-21swapper/020:06:260
29191998462,11cyclictest0-21swapper/020:06:260
29204998364,9cyclictest0-21swapper/223:31:402
29200998330,25cyclictest4381-21diskmemload00:11:041
29191998362,11cyclictest0-21swapper/019:31:350
29191998361,12cyclictest0-21swapper/020:26:220
29191998346,7cyclictest181rcu_preempt00:08:270
29191998343,17cyclictest0-21swapper/020:11:290
29204998260,13cyclictest0-21swapper/219:56:042
29204998260,10cyclictest0-21swapper/219:51:052
29204998260,10cyclictest0-21swapper/219:51:052
29204998259,14cyclictest17719-21ntp_kernel_pll_20:01:282
29204998238,9cyclictest181rcu_preempt20:17:062
29200998245,28cyclictest18544-21cron20:06:011
29191998266,11cyclictest29183-21cyclictest22:52:150
29191998266,11cyclictest29183-21cyclictest22:52:150
29191998263,9cyclictest0-21swapper/019:36:260
29191998260,9cyclictest181rcu_preempt20:21:240
29204998159,15cyclictest2374-21systemd-journal22:18:572
29204998145,8cyclictest181rcu_preempt23:37:572
29204998143,9cyclictest181rcu_preempt00:16:372
29200998153,9cyclictest181rcu_preempt23:27:211
29200998149,9cyclictest181rcu_preempt23:06:261
29191998163,11cyclictest29183-21cyclictest00:27:430
29191998143,7cyclictest181rcu_preempt22:16:410
29191998138,9cyclictest181rcu_preempt00:12:080
29204998064,10cyclictest5276-21latency_hist21:56:032
29204998060,10cyclictest0-21swapper/221:26:242
29200998060,13cyclictest0-21swapper/123:51:061
29200998054,17cyclictest27148-21/usr/sbin/munin20:31:271
29191998063,8cyclictest0-21swapper/021:56:380
29191998056,14cyclictest0-21swapper/021:26:260
29191998042,18cyclictest32256-21fschecks_time20:46:250
29191998040,18cyclictest58-21kcompactd000:04:170
29204997959,14cyclictest14287-21sh21:17:162
29204997959,14cyclictest14287-21sh21:17:162
29204997958,10cyclictest0-21swapper/221:21:252
29204997956,13cyclictest0-21swapper/222:56:372
29204997938,17cyclictest0-21swapper/219:29:402
29204997938,17cyclictest0-21swapper/219:29:402
29200997955,11cyclictest181rcu_preempt22:26:311
29200997946,13cyclictest14610-21ssh21:17:231
29200997946,13cyclictest14610-21ssh21:17:231
2920099793,41cyclictest23606-21diskstats21:32:191
29200997930,23cyclictest6331-21latency19:26:271
29200997930,23cyclictest6331-21latency19:26:271
29191997953,8cyclictest181rcu_preempt00:16:250
29191997942,7cyclictest181rcu_preempt21:17:280
29191997942,7cyclictest181rcu_preempt21:17:280
29191997941,8cyclictest181rcu_preempt19:26:340
29191997941,8cyclictest181rcu_preempt19:26:340
29200997842,8cyclictest181rcu_preempt20:06:341
29200997842,8cyclictest181rcu_preempt20:06:341
29191997858,13cyclictest21820-21ntp_kernel_pll_23:16:290
2921199774,42cyclictest0-21swapper/321:16:253
2921199774,42cyclictest0-21swapper/321:16:253
29204997761,10cyclictest8160-21runrttasks22:53:402
29204997761,10cyclictest8160-21runrttasks22:53:402
29204997759,10cyclictest0-21swapper/221:41:032
29204997758,9cyclictest0-21swapper/220:51:032
29204997757,14cyclictest4381-21diskmemload21:06:022
29200997740,13cyclictest58-21kcompactd020:17:111
29191997760,12cyclictest29183-21cyclictest21:24:560
29191997745,7cyclictest181rcu_preempt23:06:260
29191997744,8cyclictest181rcu_preempt22:06:570
29191997742,7cyclictest181rcu_preempt22:26:340
29191997722,7cyclictest181rcu_preempt22:46:300
29191997722,7cyclictest181rcu_preempt22:46:300
76512760,7sleep30-21swapper/323:46:393
29204997660,9cyclictest0-21swapper/200:11:302
29204997659,11cyclictest297-21systemd-logind22:36:022
29204997657,13cyclictest13356-21/usr/sbin/munin21:16:022
29204997655,12cyclictest0-21swapper/223:21:032
29204997655,11cyclictest0-21swapper/223:26:222
29204997644,8cyclictest181rcu_preempt22:15:562
29204997644,8cyclictest181rcu_preempt22:15:562
29204997641,9cyclictest0-21swapper/220:56:032
29204997641,23cyclictest17899-21kworker/u19:0+nfsiod00:27:542
29204997638,14cyclictest0-21swapper/223:04:242
29204997638,14cyclictest0-21swapper/223:04:242
29204997630,8cyclictest181rcu_preempt20:36:012
29200997661,10cyclictest29183-21cyclictest22:37:351
29200997653,17cyclictest13475-21apt-key21:16:041
29200997624,16cyclictest0-21swapper/121:56:331
29191997656,14cyclictest10098-21latency23:51:260
29204997560,9cyclictest3021-21acpi20:56:132
29204997559,9cyclictest0-21swapper/221:41:352
29204997558,9cyclictest0-21swapper/221:56:372
29204997556,9cyclictest0-21swapper/220:16:032
29204997556,13cyclictest26610-21sh23:25:222
29204997556,13cyclictest26610-21sh23:25:222
29204997548,17cyclictest1-21systemd21:34:282
29200997555,13cyclictest9669-21ntp_offset19:36:301
29200997547,19cyclictest544-21cron23:26:011
29200997547,19cyclictest544-21cron23:26:011
29200997538,11cyclictest181rcu_preempt20:21:191
29200997535,12cyclictest181rcu_preempt19:46:031
29191997560,9cyclictest0-21swapper/023:56:280
29191997556,12cyclictest0-21swapper/023:01:340
29191997556,12cyclictest0-21swapper/023:01:340
29191997540,7cyclictest181rcu_preempt20:31:240
29191997536,19cyclictest8893-21kworker/u18:0-events_unbound20:06:030
29204997459,8cyclictest0-21swapper/222:51:042
29204997459,8cyclictest0-21swapper/222:51:042
29204997453,12cyclictest0-21swapper/222:41:032
29204997450,16cyclictest4381-21diskmemload23:51:152
29204997445,7cyclictest181rcu_preempt19:09:032
29200997454,14cyclictest2187-21latency_hist19:16:061
29200997452,15cyclictest4381-21diskmemload21:26:231
29200997450,18cyclictest2880-21latency_hist20:56:031
29200997443,21cyclictest4376-21latency_hist21:01:031
29200997429,11cyclictest181rcu_preempt19:54:111
29191997459,8cyclictest0-21swapper/021:06:390
29191997455,13cyclictest300-21rs:main0
29191997455,12cyclictest29183-21cyclictest21:36:240
29191997451,16cyclictest0-21swapper/022:06:040
29191997441,10cyclictest181rcu_preempt23:21:360
29191997441,10cyclictest181rcu_preempt23:21:360
29191997435,11cyclictest58-21kcompactd022:38:090
2921199733,34cyclictest0-21swapper/322:22:013
29204997358,8cyclictest0-21swapper/223:11:192
29204997357,9cyclictest0-21swapper/222:22:242
29204997354,9cyclictest0-21swapper/200:06:352
29204997352,9cyclictest0-21swapper/222:31:042
29204997338,10cyclictest381ktimers/220:01:042
29200997348,18cyclictest29183-21cyclictest00:19:171
29200997343,21cyclictest4381-21diskmemload22:11:301
29200997343,21cyclictest4381-21diskmemload22:11:301
29200997341,8cyclictest181rcu_preempt22:24:141
29191997358,11cyclictest29183-21cyclictest22:22:430
29191997355,10cyclictest0-21swapper/023:31:370
29191997346,8cyclictest181rcu_preempt00:21:370
29204997255,10cyclictest21642-21kworker/u17:2-rpciod21:06:202
29204997253,10cyclictest0-21swapper/220:26:232
29204997252,10cyclictest0-21swapper/219:11:362
29204997251,11cyclictest0-21swapper/219:46:052
29200997254,12cyclictest2374-21systemd-journal22:42:571
29200997249,15cyclictest29183-21cyclictest20:11:371
29200997246,11cyclictest181rcu_preempt23:36:211
29200997244,17cyclictest2374-21systemd-journal00:04:491
29200997234,7cyclictest181rcu_preempt23:32:441
29191997255,8cyclictest0-21swapper/020:51:460
29191997240,8cyclictest181rcu_preempt23:43:450
29204997154,8cyclictest0-21swapper/219:01:292
29200997151,15cyclictest28754-21/usr/sbin/munin20:36:311
29200997151,15cyclictest28754-21/usr/sbin/munin20:36:311
29200997149,16cyclictest7363-21idleruntime-cro21:06:001
29200997149,15cyclictest29183-21cyclictest23:11:371
29200997132,23cyclictest30012-21grep21:41:361
29200997123,11cyclictest0-21swapper/100:25:211
29200997117,20cyclictest0-21swapper/121:25:321
29191997156,8cyclictest0-21swapper/019:51:170
29191997154,9cyclictest0-21swapper/022:56:360
29191997151,11cyclictest0-21swapper/022:31:120
2919199713,58cyclictest277-21dbus-daemon21:46:010
29204997052,8cyclictest0-21swapper/219:36:012
29204997051,9cyclictest0-21swapper/200:21:242
29204997051,10cyclictest0-21swapper/223:51:042
29204997051,10cyclictest0-21swapper/219:21:052
29200997048,14cyclictest0-21swapper/123:18:581
29200997047,14cyclictest12841-21ntp_kernel_err19:46:301
29200997047,14cyclictest12841-21ntp_kernel_err19:46:301
29200997042,15cyclictest181rcu_preempt21:46:191
29200997042,15cyclictest181rcu_preempt21:46:191
29191997055,8cyclictest0-21swapper/019:41:360
29191997052,9cyclictest0-21swapper/021:46:380
29191997052,9cyclictest0-21swapper/021:46:380
29204996953,11cyclictest29183-21cyclictest20:41:002
29204996953,11cyclictest29183-21cyclictest20:41:002
29204996950,9cyclictest0-21swapper/220:21:162
29200996949,8cyclictest31-21ksoftirqd/121:51:591
29200996947,12cyclictest0-21swapper/123:03:061
29200996947,12cyclictest0-21swapper/123:03:061
29200996942,18cyclictest30722-21latency_hist19:06:041
29200996938,9cyclictest181rcu_preempt00:11:381
29200996935,13cyclictest181rcu_preempt20:41:341
29191996952,10cyclictest0-21swapper/021:56:040
29204996846,14cyclictest29183-21cyclictest22:41:422
29200996847,11cyclictest0-21swapper/122:06:181
29200996843,7cyclictest181rcu_preempt21:06:111
29200996815,20cyclictest0-21swapper/122:04:161
29191996853,10cyclictest0-21swapper/019:11:340
29191996842,10cyclictest181rcu_preempt23:37:090
29204996753,10cyclictest29183-21cyclictest20:07:192
29204996753,10cyclictest29183-21cyclictest20:07:192
29200996744,17cyclictest0-21swapper/123:41:261
29200996742,10cyclictest24743-21kworker/u17:2-rpciod22:31:281
29200996739,7cyclictest181rcu_preempt00:27:211
29200996735,9cyclictest181rcu_preempt22:57:241
29200996735,9cyclictest181rcu_preempt19:06:251
29191996741,20cyclictest13817-21kworker/u17:3+nfsiod23:11:080
29204996649,8cyclictest0-21swapper/223:41:372
29200996639,8cyclictest181rcu_preempt19:56:231
29200996638,19cyclictest26173-21cstates21:36:191
29191996652,7cyclictest0-21swapper/020:36:360
29191996652,7cyclictest0-21swapper/020:36:360
29191996652,7cyclictest0-21swapper/019:56:360
29191996650,9cyclictest0-21swapper/020:56:200
29191996617,22cyclictest15212-21awk22:11:350
29191996617,22cyclictest15212-21awk22:11:350
29191996550,8cyclictest0-21swapper/019:21:190
29191996547,12cyclictest5066-21sh21:01:260
2921199647,22cyclictest0-21swapper/321:32:153
29200996431,23cyclictest1057-21apt-config20:51:031
2920099642,42cyclictest2687-21apt-get19:16:281
29200996338,16cyclictest4320-21cpu19:21:251
29200996337,16cyclictest25730-21fschecks_count20:26:221
29191996331,10cyclictest58-21kcompactd019:46:240
29191996331,10cyclictest58-21kcompactd019:46:240
29200996233,19cyclictest8935-21latency_hist19:36:031
2921199602,38cyclictest5247-21taskset21:01:303
29191996045,10cyclictest29183-21cyclictest20:17:150
2921199585,21cyclictest0-21swapper/319:07:223
279332580,9sleep3451rcuc/320:31:363
2921199573,34cyclictest28423-21chrt22:33:353
2921199572,38cyclictest22319-21chrt20:16:173
29211995632,17cyclictest311992sleep300:26:363
269932530,7sleep30-21swapper/320:31:043
2921199523,32cyclictest26067-21taskset00:17:563
2921199522,33cyclictest18839-21chrt20:06:173
2921199522,33cyclictest18839-21chrt20:06:173
2921199522,33cyclictest18051-21chrt21:21:533
2862625210,23sleep30-21swapper/318:56:483
2921199513,35cyclictest29945-21taskset21:41:363
2921199513,31cyclictest11663-21chrt22:06:203
2921199513,29cyclictest22246-21chrt20:16:053
2921199512,32cyclictest29475-21taskset19:01:193
2921199512,32cyclictest28062-21chrt23:26:373
2921199503,31cyclictest6328-21chrt19:26:273
2921199503,31cyclictest6328-21chrt19:26:273
2921199493,29cyclictest10405-21chrt22:56:383
2921199492,34cyclictest5065-21chrt22:49:043
2921199492,34cyclictest5065-21chrt22:49:043
2921199492,30cyclictest4191-21chrt19:21:043
2921199484,26cyclictest2636-21taskset19:16:063
2921199483,29cyclictest3984-21taskset23:41:243
2921199482,29cyclictest23615-21taskset22:26:103
2921199472,27cyclictest11837-21chrt21:11:433
2921199463,31cyclictest19670-21taskset00:06:413
2921199463,29cyclictest2088-21chrt23:37:313
2921199463,28cyclictest19992-21taskset21:26:193
2921199462,30cyclictest8703-21taskset22:01:213
2921199462,30cyclictest18202-21taskset23:11:043
2921199462,29cyclictest7826-21chrt21:06:203
2921199453,30cyclictest22183-21chrt00:11:313
2921199452,30cyclictest2044-21chrt22:43:573
2921199443,31cyclictest15637-21taskset22:11:473
2921199443,31cyclictest15637-21taskset22:11:473
2921199443,30cyclictest5763-21taskset21:56:233
2921199443,29cyclictest14121-21chrt23:57:493
2921199443,28cyclictest25666-21chrt23:22:393
2921199443,28cyclictest25666-21chrt23:22:393
2921199443,28cyclictest13473-21chrt23:01:533
2921199443,28cyclictest13473-21chrt23:01:533
2921199443,27cyclictest4319-21chrt19:21:253
2921199433,31cyclictest4487-21chrt21:54:003
2921199433,27cyclictest11950-21chrt23:55:063
2921199433,26cyclictest2840-21taskset20:56:033
2921199433,25cyclictest31946-21chrt21:46:053
2921199433,25cyclictest31946-21chrt21:46:053
2921199433,25cyclictest18472-21taskset00:06:043
2921199432,30cyclictest30843-21taskset22:37:003
2921199432,29cyclictest26383-21chrt21:36:253
2921199423,29cyclictest18088-21chrt22:16:333
2921199422,29cyclictest30790-21chrt23:31:313
2921199413,28cyclictest13747-21chrt19:51:023
2921199413,28cyclictest13747-21chrt19:51:023
2921199413,27cyclictest32008-21chrt20:46:193
2921199413,27cyclictest14973-21chrt19:51:383
2921199413,25cyclictest8395-21chrt19:31:383
2921199413,25cyclictest17217-21taskset20:01:103
2921199412,29cyclictest27469-21chrt00:21:123
2921199412,27cyclictest9151-21chrt19:36:153
2921199412,25cyclictest3529-21chrt20:56:313
2921199403,27cyclictest30546-21chrt20:41:203
2921199403,27cyclictest22691-21chrt23:17:373
2921199403,26cyclictest24049-21chrt20:21:203
2921199403,25cyclictest19780-21chrt23:12:473
2921199403,23cyclictest12167-21chrt19:46:033
2921199393,24cyclictest28746-21taskset20:36:063
2921199393,24cyclictest28746-21taskset20:36:063
2921199383,26cyclictest15619-21chrt19:56:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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