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2026-05-06 - 06:48
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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 Wed May 06, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23855991153,99cyclictest27490-21apt-get23:37:102
23855991112,37cyclictest18478-21sh23:22:242
23855991103,32cyclictest32483-21taskset21:57:542
23855991103,32cyclictest32483-21taskset21:57:542
238559910168,26cyclictest15887-21sshd00:11:572
23855991012,31cyclictest27594-21taskset20:49:502
23855991003,29cyclictest15923-21diskmemload21:29:372
23855991003,29cyclictest15923-21diskmemload21:29:372
2385599992,31cyclictest31008-21diskmemload23:19:052
2385599982,31cyclictest11933-21ssh00:04:582
23855999814,75cyclictest11093-21apt-get21:22:042
2385599962,21cyclictest352-21runrttasks22:38:092
2385599962,21cyclictest352-21runrttasks22:38:092
2385599952,29cyclictest352-21runrttasks19:54:382
23831999573,15cyclictest9978-21fschecks_time19:57:080
23855999363,20cyclictest25832-21latency_hist21:46:482
23855999271,14cyclictest297-21systemd-logind19:06:462
2385599913,7cyclictest0-21swapper/222:32:002
23831999172,13cyclictest277-21dbus-daemon21:21:450
227432918,58sleep122821-21/usr/sbin/munin18:57:211
23855999053,30cyclictest0-21swapper/200:27:112
2385599903,34cyclictest15303-21switchtime20:12:202
23847999070,13cyclictest0-21swapper/121:52:091
23847999069,12cyclictest0-21swapper/120:16:481
23855998970,11cyclictest0-21swapper/223:16:452
23855998970,11cyclictest0-21swapper/223:16:452
2385599893,39cyclictest352-21runrttasks00:16:582
2385599893,39cyclictest352-21runrttasks00:16:582
2385599893,38cyclictest30531-21/usr/sbin/munin22:47:232
2385599892,9cyclictest0-21swapper/200:07:012
23847998968,11cyclictest0-21swapper/120:36:481
23831998970,9cyclictest0-21swapper/020:18:150
2385599882,25cyclictest509-21ssh23:46:232
23847998872,12cyclictest0-21swapper/120:52:571
23831998844,13cyclictest181rcu_preempt19:02:200
2385599872,38cyclictest8990-21latency_hist23:06:482
23847998771,10cyclictest9766-21kworker/u17:2-xprtiod22:16:361
23847998768,12cyclictest0-21swapper/120:41:481
23847998761,20cyclictest20551-21sh22:32:011
23847998759,19cyclictest25899-21sshd20:46:451
23831998772,9cyclictest0-21swapper/021:27:090
23831998772,9cyclictest0-21swapper/021:27:090
23831998771,9cyclictest0-21swapper/000:02:010
236582876,63sleep00-21swapper/019:01:230
2385599863,39cyclictest11296-21idleruntime-cro22:16:452
2385599863,38cyclictest3633-21/usr/sbin/munin19:37:092
2385599863,37cyclictest21862-21/usr/sbin/munin20:32:172
2385599862,39cyclictest9613-21/usr/sbin/munin23:07:112
2385599862,27cyclictest31887-21/usr/sbin/munin19:22:232
2385599862,27cyclictest31887-21/usr/sbin/munin19:22:232
2385599862,26cyclictest6347-21ssh23:55:582
23847998670,9cyclictest0-21swapper/100:30:511
23831998668,10cyclictest0-21swapper/023:27:040
23831998665,11cyclictest0-21swapper/019:22:070
23831998665,11cyclictest0-21swapper/019:22:070
23831998659,7cyclictest181rcu_preempt21:07:470
23831998658,14cyclictest181rcu_preempt23:16:380
23831998658,14cyclictest181rcu_preempt23:16:380
23855998564,14cyclictest26922-21kworker/u19:023:36:442
23855998564,14cyclictest26922-21kworker/u19:023:36:442
2385599854,74cyclictest0-21swapper/221:11:572
23855998541,36cyclictest0-21swapper/219:17:172
23855998541,36cyclictest0-21swapper/219:17:172
2385599853,7cyclictest0-21swapper/222:16:582
2385599853,7cyclictest0-21swapper/222:16:582
2385599853,66cyclictest0-21swapper/219:57:012
2385599853,37cyclictest10576-21gpgv21:21:452
2385599853,36cyclictest32751-21/usr/sbin/munin22:52:082
2385599852,38cyclictest27423-21taskset21:48:282
2385599852,38cyclictest27423-21taskset21:48:282
2385599852,38cyclictest24668-21seq20:42:032
2385599852,36cyclictest967-21apt-get23:46:552
2385599852,36cyclictest967-21apt-get23:46:552
23847998565,13cyclictest0-21swapper/120:21:471
23847998564,8cyclictest181rcu_preempt22:43:151
23847998542,32cyclictest9064-21grep19:52:211
23831998563,11cyclictest0-21swapper/021:37:070
23831998563,11cyclictest0-21swapper/021:37:070
23831998562,11cyclictest181rcu_preempt23:02:110
23831998560,7cyclictest181rcu_preempt23:46:430
2385599844,35cyclictest19897-21grep20:27:072
2385599843,38cyclictest28942-21apt-get21:51:572
2385599843,33cyclictest18333-21/usr/sbin/munin22:27:222
2385599843,33cyclictest18333-21/usr/sbin/munin22:27:222
2385599842,36cyclictest22450-21sh00:22:172
2385599842,34cyclictest23081-21fschecks_count20:37:072
23847998468,9cyclictest0-21swapper/120:27:191
23847998467,8cyclictest0-21swapper/120:07:171
23847998465,13cyclictest1751-21cpuspeed19:32:001
2385599834,32cyclictest3592-21sh21:09:052
2385599833,37cyclictest6918-21latency19:47:112
2385599832,33cyclictest32366-21ssh21:02:222
2385599832,33cyclictest26463-21acpi22:41:562
23847998349,18cyclictest181rcu_preempt22:52:021
23847998345,11cyclictest181rcu_preempt00:06:571
23831998346,10cyclictest181rcu_preempt21:02:000
23831998343,15cyclictest181rcu_preempt22:00:160
23831998343,15cyclictest181rcu_preempt22:00:160
2385599823,37cyclictest22000-21/usr/sbin/munin23:27:192
2385599823,30cyclictest16839-21/usr/sbin/munin20:18:062
2385599822,34cyclictest5609-21/usr/sbin/munin22:07:112
2385599822,33cyclictest19400-21latency_hist20:26:482
2385599822,32cyclictest17257-21/usr/sbin/munin21:32:082
2385599822,27cyclictest352-21runrttasks19:08:222
23847998264,9cyclictest0-21swapper/119:27:071
23847998264,12cyclictest0-21swapper/121:17:191
23847998259,16cyclictest25589-21ssh23:32:581
23847998259,16cyclictest25589-21ssh23:32:581
23847998237,14cyclictest9199-21ssh23:07:011
23831998264,11cyclictest0-21swapper/020:46:490
2368728212,44sleep223719-21munin-run19:01:462
219622820,18sleep015-21ksoftirqd/020:32:190
2385599813,39cyclictest17223-21idleruntime-cro22:26:452
2385599813,32cyclictest13168-21fschecks_count20:07:062
2385599813,30cyclictest352-21runrttasks19:16:432
2385599812,37cyclictest7356-21irqstats23:57:112
2385599812,37cyclictest7356-21irqstats23:57:112
2385599812,36cyclictest11622-21fschecks_time20:02:082
2385599812,35cyclictest30346-21/usr/sbin/munin20:57:212
2385599812,31cyclictest4087-21/usr/sbin/munin22:58:162
2385599812,30cyclictest19969-21/usr/sbin/munin21:37:112
2385599812,30cyclictest19969-21/usr/sbin/munin21:37:112
23847998161,10cyclictest0-21swapper/119:11:491
23847998146,11cyclictest58-21kcompactd023:02:331
23831998162,12cyclictest3182-21/usr/sbin/munin22:58:140
23831998153,13cyclictest181rcu_preempt20:57:200
23831998137,11cyclictest181rcu_preempt22:06:010
2383199813,49cyclictest15-21ksoftirqd/022:29:060
2383199813,49cyclictest15-21ksoftirqd/022:29:060
2385599804,7cyclictest0-21swapper/219:31:592
2385599804,29cyclictest28347-21grep20:52:432
2385599803,30cyclictest5011-21wc19:42:032
2385599802,29cyclictest594-21/usr/sbin/munin19:27:162
23847998060,14cyclictest1128-21unixbench_singl21:58:291
23847998060,14cyclictest1128-21unixbench_singl21:58:291
23847998057,17cyclictest4052-21threads19:37:201
23831998062,8cyclictest0-21swapper/022:22:230
23831998059,10cyclictest0-21swapper/023:52:100
23831998052,11cyclictest181rcu_preempt23:18:180
23831998051,13cyclictest181rcu_preempt22:54:200
23831998038,16cyclictest0-21swapper/021:44:310
23831998037,12cyclictest181rcu_preempt22:10:170
23831998026,10cyclictest181rcu_preempt22:18:550
23831998026,10cyclictest181rcu_preempt22:18:550
2385599793,32cyclictest4291-21diskmemload22:03:522
23847997957,12cyclictest0-21swapper/119:57:081
23831997962,11cyclictest2374-21systemd-journal21:12:550
23831997955,9cyclictest181rcu_preempt21:55:230
23831997946,23cyclictest0-21swapper/022:45:060
23831997945,8cyclictest181rcu_preempt21:22:020
23831997924,7cyclictest181rcu_preempt21:51:480
23831997924,7cyclictest181rcu_preempt21:51:480
23847997849,12cyclictest181rcu_preempt22:30:011
23847997849,12cyclictest181rcu_preempt22:30:011
23847997763,8cyclictest0-21swapper/123:21:481
23847997760,10cyclictest0-21swapper/123:22:541
23847997756,11cyclictest0-21swapper/100:02:171
23847997750,8cyclictest7326-21ssh23:57:101
23847997750,8cyclictest7326-21ssh23:57:101
23847997729,18cyclictest23822-21cyclictest19:46:021
23831997751,17cyclictest3688-40mandb23:51:500
23847997659,10cyclictest0-21swapper/122:06:471
23847997656,12cyclictest0-21swapper/119:22:071
23847997656,12cyclictest0-21swapper/119:22:071
23847997655,9cyclictest181rcu_preempt20:48:391
23847997655,7cyclictest181rcu_preempt22:17:121
23847997655,7cyclictest181rcu_preempt22:17:121
23847997628,11cyclictest181rcu_preempt21:27:151
23847997628,11cyclictest181rcu_preempt21:27:151
23831997657,11cyclictest0-21swapper/019:17:210
23831997657,11cyclictest0-21swapper/019:17:210
23831997648,22cyclictest19918-21latency_hist21:36:490
23847997553,15cyclictest16489-21sh00:12:161
23847997521,24cyclictest0-21swapper/100:26:301
23831997554,11cyclictest0-21swapper/020:16:490
23847997454,11cyclictest0-21swapper/122:47:171
23847997452,16cyclictest31008-21diskmemload22:58:261
23847997433,8cyclictest181rcu_preempt22:22:121
23831997446,8cyclictest181rcu_preempt19:41:490
23831997434,9cyclictest1916-21fschecks_time19:32:050
23847997356,8cyclictest0-21swapper/100:17:021
23847997356,8cyclictest0-21swapper/100:17:021
23847997352,11cyclictest0-21swapper/121:51:491
23847997352,11cyclictest0-21swapper/121:51:491
23847997330,15cyclictest23515-21ssh21:42:131
23847997329,13cyclictest181rcu_preempt21:06:571
23831997358,9cyclictest0-21swapper/023:23:020
23831997354,10cyclictest0-21swapper/019:47:180
23831997340,15cyclictest181rcu_preempt23:59:350
23831997340,15cyclictest181rcu_preempt23:59:350
23831997336,9cyclictest0-21swapper/023:10:360
23831997327,11cyclictest181rcu_preempt19:52:020
2384799728,55cyclictest27490-21apt-get23:37:111
23847997255,9cyclictest0-21swapper/120:26:451
23847997250,13cyclictest0-21swapper/119:12:071
23847997235,9cyclictest181rcu_preempt20:56:591
23831997256,10cyclictest297-21systemd-logind23:51:460
23831997253,10cyclictest0-21swapper/000:22:230
23831997252,10cyclictest0-21swapper/023:36:470
23831997252,10cyclictest0-21swapper/023:36:470
23831997252,10cyclictest0-21swapper/019:42:120
23831997237,10cyclictest181rcu_preempt00:29:590
2383199723,54cyclictest21461-21timerwakeupswit22:32:210
2383199723,36cyclictest28501-21ssh23:37:590
23831997224,12cyclictest0-21swapper/020:02:200
23831997222,11cyclictest181rcu_preempt19:14:530
23847997155,9cyclictest0-21swapper/123:51:501
23847997154,10cyclictest0-21swapper/123:27:141
23847997153,9cyclictest0-21swapper/121:12:121
23847997149,12cyclictest0-21swapper/119:06:471
23847997147,17cyclictest23822-21cyclictest21:41:451
23847997147,17cyclictest23822-21cyclictest21:41:451
2384799712,27cyclictest11549-21ssh21:22:311
23831997156,9cyclictest23793-21fschecks_time22:37:080
23831997156,9cyclictest23793-21fschecks_time22:37:080
23831997150,8cyclictest181rcu_preempt19:07:230
23831997150,15cyclictest0-21swapper/000:17:220
23831997150,15cyclictest0-21swapper/000:17:220
23831997147,15cyclictest16511-21ntp_states00:12:170
23831997134,9cyclictest181rcu_preempt20:10:560
23831997121,11cyclictest181rcu_preempt20:56:470
23847997054,9cyclictest0-21swapper/121:32:111
23847997048,13cyclictest0-21swapper/122:37:221
23847997048,13cyclictest0-21swapper/122:37:221
23847997047,15cyclictest3887-21ssh23:51:501
23847997022,13cyclictest181rcu_preempt23:12:011
23847997022,13cyclictest181rcu_preempt23:12:011
23831997049,7cyclictest181rcu_preempt22:13:070
23831997041,22cyclictest0-21swapper/022:46:490
23831997027,12cyclictest181rcu_preempt20:22:030
23831997021,11cyclictest161ktimers/020:26:570
23847996951,9cyclictest0-21swapper/119:21:021
23847996951,9cyclictest0-21swapper/119:21:021
23847996948,14cyclictest4445-21latency23:52:121
23847996916,33cyclictest6543-21timerandwakeup22:07:221
23831996950,9cyclictest0-21swapper/000:07:030
23847996851,10cyclictest58-21kcompactd021:02:291
2384799684,43cyclictest30924-21latency23:42:111
23847996749,9cyclictest0-21swapper/120:02:131
2383199673,45cyclictest23100-21fschecks_count20:37:070
23831996732,11cyclictest23822-21cyclictest19:27:210
2298926718,23sleep30-21swapper/318:57:313
23831996534,13cyclictest58-21kcompactd020:48:290
2385999648,39cyclictest0-21swapper/322:57:093
23859996412,39cyclictest0-21swapper/323:51:493
23859996412,39cyclictest0-21swapper/323:51:493
23847996448,7cyclictest0-21swapper/119:47:191
23859996144,10cyclictest79592sleep319:51:483
2385999613,41cyclictest14521-21taskset20:11:493
23859995916,26cyclictest0-21swapper/321:57:183
23859995916,26cyclictest0-21swapper/321:57:183
2385999583,45cyclictest24989-21chrt19:02:233
2385999583,43cyclictest15576-21chrt00:11:453
2385999573,38cyclictest13938-21taskset21:26:493
2385999544,39cyclictest22278-21chrt23:27:223
2385999543,37cyclictest9370-21chrt23:07:073
2385999543,37cyclictest3806-21chrt19:37:143
2385999543,37cyclictest31170-21taskset23:42:183
2385999542,37cyclictest10546-21chrt21:21:443
2385999533,38cyclictest19852-21chrt23:23:373
2385999533,35cyclictest689-21chrt22:52:193
2385999532,40cyclictest28144-21taskset22:44:003
2385999524,37cyclictest21055-21chrt20:31:453
2385999523,35cyclictest5280-21taskset23:52:563
2385999523,35cyclictest22643-21chrt21:41:453
2385999523,35cyclictest22643-21chrt21:41:453
2385999523,32cyclictest5838-21chrt22:07:073
2385999518,31cyclictest0-21swapper/323:37:113
2385999514,33cyclictest12231-21taskset00:05:493
2385999514,33cyclictest11284-21chrt20:01:483
2385999513,36cyclictest26249-21chrt21:47:083
2385999513,36cyclictest26249-21chrt21:47:083
2385999513,34cyclictest1367-21chrt21:06:163
2385999513,34cyclictest13333-21taskset23:12:383
2385999513,34cyclictest13333-21taskset23:12:383
23859995035,10cyclictest451rcuc/323:35:223
23859995035,10cyclictest451rcuc/323:35:223
2385999503,38cyclictest22311-21chrt22:34:193
2385999503,36cyclictest23357-21chrt21:42:103
2385999503,34cyclictest20957-21chrt00:20:123
2385999503,34cyclictest20957-21chrt00:20:123
2385999503,34cyclictest20012-21chrt22:31:193
2385999503,34cyclictest20012-21chrt22:31:193
2385999502,39cyclictest21800-21chrt00:21:553
2385999502,35cyclictest5042-21chrt22:06:013
23859995010,26cyclictest0-21swapper/320:17:583
2385999494,35cyclictest24167-21taskset20:40:453
2385999494,34cyclictest23707-21chrt22:37:073
2385999494,34cyclictest23707-21chrt22:37:073
2385999493,36cyclictest30697-21chrt19:21:473
2385999493,36cyclictest30697-21chrt19:21:473
2385999493,36cyclictest10154-21taskset22:13:353
2385999493,35cyclictest17004-21taskset00:12:263
2385999492,36cyclictest14074-21taskset21:27:023
2385999492,36cyclictest14074-21taskset21:27:023
2385999485,32cyclictest27611-21taskset00:31:483
2385999484,34cyclictest31345-21chrt19:22:113
2385999484,34cyclictest31345-21chrt19:22:113
2385999484,34cyclictest30287-21taskset21:53:043
2385999483,32cyclictest21886-21chrt20:32:183
2385999483,31cyclictest18860-21chrt21:34:273
23859994833,10cyclictest451rcuc/319:52:183
2385999482,31cyclictest17252-21chrt23:20:203
2385999474,33cyclictest1724-21chrt19:31:593
2385999473,35cyclictest30886-21chrt22:48:223
2385999473,34cyclictest8072-21chrt23:57:263
2385999473,34cyclictest8072-21chrt23:57:263
2385999473,34cyclictest25938-21chrt19:06:573
2385999473,34cyclictest15631-21taskset22:22:233
2385999473,34cyclictest12207-21chrt20:02:213
2385999473,34cyclictest12099-21chrt22:17:123
2385999473,34cyclictest12099-21chrt22:17:123
2385999473,33cyclictest5392-21chrt21:12:123
2385999472,34cyclictest18532-21chrt20:22:143
2385999472,31cyclictest30035-21chrt20:57:123
2385999472,30cyclictest395-21chrt19:27:103
2385999464,32cyclictest24621-21taskset20:42:023
23859994633,9cyclictest451rcuc/319:46:143
2385999463,34cyclictest29481-21chrt20:56:483
2385999463,34cyclictest2735-21chrt21:07:213
2385999463,32cyclictest6685-21taskset23:02:123
2385999453,33cyclictest27839-21chrt19:12:033
23859994528,12cyclictest451rcuc/320:47:213
2385999442,27cyclictest15466-21chrt20:12:213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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