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2026-04-23 - 00:32
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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 Apr 22, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
173529913763,18cyclictest3225-21latency_hist12:02:420
173529913763,18cyclictest3225-21latency_hist12:02:420
15873210819,46sleep00-21swapper/006:57:540
17361991003,47cyclictest3482-21ssh12:02:541
1694721008,18sleep20-21swapper/206:59:322
17371999927,42cyclictest0-21swapper/212:04:062
17361999652,39cyclictest17339-21cyclictest08:18:161
1737199953,54cyclictest467-21runrttasks09:15:132
1736199952,46cyclictest8977-21ssh11:17:501
1736199952,46cyclictest8977-21ssh11:17:501
17371999248,38cyclictest544-21cron07:57:402
17371999248,38cyclictest544-21cron07:57:402
17371999069,13cyclictest18163-21ssh12:27:412
17361999050,35cyclictest17339-21cyclictest09:13:161
17352999068,15cyclictest29128-21latency_hist10:57:420
17371998949,30cyclictest0-21swapper/210:28:082
17371998949,30cyclictest0-21swapper/210:28:082
17371998945,38cyclictest7947-21cstates09:27:572
17361998969,11cyclictest365-21ntpd11:08:161
17361998946,37cyclictest0-21swapper/107:17:431
17371998763,15cyclictest15433-21sh11:28:072
1737199874,64cyclictest0-21swapper/209:32:582
1736199879,39cyclictest4547-21modprobe09:22:391
1736199875,41cyclictest530-21ssh10:08:181
17361998748,33cyclictest4844-21/usr/sbin/munin09:23:091
17352998764,17cyclictest16756-21latency_hist09:42:420
17352998764,17cyclictest16756-21latency_hist09:42:420
17371998658,22cyclictest24710-21diskmemload10:03:232
17371998658,22cyclictest24710-21diskmemload10:03:232
1736199863,35cyclictest7917-21grep08:08:161
1736199863,34cyclictest32601-21modprobe11:57:381
1736199863,24cyclictest21753-21runrttasks08:52:521
17371998545,33cyclictest7474-21ntp_offset08:08:082
17371998545,33cyclictest24710-21diskmemload10:10:502
17361998544,35cyclictest27356-21sh11:48:051
17361998544,35cyclictest27356-21sh11:48:051
17361998542,36cyclictest24710-21diskmemload11:58:051
17361998542,36cyclictest24710-21diskmemload11:58:051
1736199853,39cyclictest352-21runrttasks12:07:591
1736199853,36cyclictest31302-21taskset07:42:591
1736199853,35cyclictest20136-21grep10:42:421
1736199853,25cyclictest23952-21/usr/sbin/munin11:43:171
17361998528,52cyclictest0-21swapper/110:17:421
17371998445,33cyclictest23858-21ntp_kernel_pll_08:58:072
17371998438,40cyclictest0-21swapper/210:17:422
17361998456,19cyclictest10801-21apt-key09:32:441
1736199843,30cyclictest24355-21unixbench_singl10:48:161
1736199843,29cyclictest29659-21/usr/sbin/munin10:58:021
1736199842,37cyclictest25006-21/usr/sbin/munin09:03:071
1736199842,35cyclictest20454-21grep07:08:181
17352998464,14cyclictest2539-21latency_hist11:07:420
17352998464,14cyclictest2539-21latency_hist11:07:420
17352998464,13cyclictest24869-21sh09:02:430
17352998463,15cyclictest24710-21diskmemload09:17:410
17371998358,16cyclictest19546-21/usr/sbin/munin07:08:192
17371998343,34cyclictest24710-21diskmemload10:27:022
1736199836,31cyclictest29154-21ssh10:03:001
1736199836,31cyclictest29154-21ssh10:03:001
17361998343,9cyclictest0-21swapper/111:13:541
1736199834,32cyclictest12252-21grep11:23:021
1736199833,37cyclictest28258-21apt-get09:07:511
1736199833,34cyclictest11781-21ssh09:33:271
1736199833,24cyclictest17363-21latency_hist07:02:441
1736199832,35cyclictest13878-21ssh10:32:161
1736199832,35cyclictest13878-21ssh10:32:161
1736199832,33cyclictest20403-21latency09:48:051
1736199832,30cyclictest20363-21ssh12:30:491
1736199832,30cyclictest20363-21ssh12:30:491
17352998366,10cyclictest22547-21apt-get07:18:010
1735299834,56cyclictest12390-21/usr/sbin/munin12:18:130
1735299834,56cyclictest12390-21/usr/sbin/munin12:18:130
17371998258,19cyclictest17339-21cyclictest09:38:122
17371998258,19cyclictest17339-21cyclictest09:38:122
1736199823,36cyclictest6729-21latency_hist08:07:411
1736199823,36cyclictest6729-21latency_hist08:07:411
1736199823,33cyclictest9399-21/usr/sbin/munin12:13:161
1736199823,33cyclictest13974-21/usr/sbin/munin09:38:011
1736199823,33cyclictest13974-21/usr/sbin/munin09:38:011
1736199822,34cyclictest20571-21apt-get11:37:391
17352998251,14cyclictest18552-21ssh12:27:570
17352998251,14cyclictest18552-21ssh12:27:570
1737199812,44cyclictest19023-21grep08:43:142
1737199812,44cyclictest19023-21grep08:43:142
1736199814,8cyclictest0-21swapper/108:37:531
17361998137,37cyclictest0-21swapper/111:39:411
1736199813,36cyclictest9400-21tail10:23:161
1736199813,35cyclictest27601-21modprobe07:32:391
1736199813,35cyclictest27601-21modprobe07:32:391
1736199813,35cyclictest13200-21/usr/sbin/munin12:18:141
1736199813,35cyclictest13200-21/usr/sbin/munin12:18:141
1736199813,34cyclictest9552-21grep08:13:161
1736199813,34cyclictest13748-21/usr/sbin/munin08:28:031
1736199813,34cyclictest13748-21/usr/sbin/munin08:28:031
1736199813,32cyclictest352-21runrttasks10:18:471
1736199813,31cyclictest29701-21cut07:38:011
1736199813,30cyclictest16428-21latency_hist08:37:411
1736199813,30cyclictest16428-21latency_hist08:37:411
1736199813,26cyclictest28599-21latency_hist10:02:421
17361998114,60cyclictest0-21swapper/110:52:551
17352998164,11cyclictest24710-21diskmemload11:22:020
17352998164,11cyclictest24710-21diskmemload11:22:020
17352998159,15cyclictest24710-21diskmemload11:48:470
17352998159,15cyclictest24710-21diskmemload11:48:470
17352998150,24cyclictest0-21swapper/010:27:410
1737199803,65cyclictest0-21swapper/212:17:502
1737199803,65cyclictest0-21swapper/212:17:502
1737199803,60cyclictest1922-21ssh09:17:542
1736199803,35cyclictest2447-21idleruntime-cro11:07:391
1736199803,35cyclictest2447-21idleruntime-cro11:07:391
1736199803,34cyclictest15586-21seq12:22:591
1736199803,32cyclictest23560-21fschecks_count08:58:001
1736199803,25cyclictest23112-21apt-get07:18:371
1736199802,33cyclictest15875-21timerwakeupswit11:28:161
1736199802,26cyclictest20312-21apt-get10:42:501
17352998058,16cyclictest24710-21diskmemload10:03:140
17352998058,16cyclictest24710-21diskmemload10:03:140
17352998056,18cyclictest32643-21latency_hist07:47:430
17352998043,9cyclictest0-21swapper/010:20:170
17352998043,11cyclictest0-21swapper/011:36:530
17371997959,13cyclictest2374-21systemd-journal09:45:532
1737199794,64cyclictest4008-21kworker/u19:1+rpciod10:49:382
17371997944,30cyclictest10352-21timerwakeupswit12:13:142
17371997938,35cyclictest14685-21fschecks_time10:33:022
1737199793,67cyclictest9576-21ntp_states11:18:092
1737199793,67cyclictest9576-21ntp_states11:18:092
1737199793,62cyclictest0-21swapper/207:22:502
1737199793,58cyclictest22965-21ssh09:52:512
1737199792,63cyclictest0-21swapper/210:52:522
1736199793,33cyclictest2141-21seq07:53:011
1736199793,33cyclictest2141-21seq07:53:011
1736199793,33cyclictest1591-21modprobe07:52:391
1736199793,33cyclictest13309-21grep08:27:431
1736199793,31cyclictest18863-21idleruntime-cro07:07:401
1736199793,27cyclictest29349-21latency_hist07:37:421
1735299796,63cyclictest1351-21apt-get09:17:540
1735299794,39cyclictest25632-21ntpq09:03:080
1735299793,65cyclictest28258-21apt-get09:07:590
1737199783,68cyclictest32477-21fschecks_count11:03:002
1737199783,68cyclictest32477-21fschecks_count11:03:002
17371997832,38cyclictest0-21swapper/211:47:542
17371997832,38cyclictest0-21swapper/211:47:542
1736199783,35cyclictest14396-21seq10:32:541
1736199783,29cyclictest25099-21/usr/sbin/munin07:23:051
1736199783,23cyclictest5204-21grep08:02:421
1736199783,23cyclictest5204-21grep08:02:421
1736199783,11cyclictest0-21swapper/109:43:011
17352997860,11cyclictest2374-21systemd-journal11:01:530
17352997856,15cyclictest10907-21latency_hist09:32:440
1735299784,60cyclictest22818-21seq09:52:420
1735299782,44cyclictest4958-21sort09:22:560
17371997759,12cyclictest19933-21/usr/sbin/munin09:48:172
17371997758,13cyclictest24710-21diskmemload11:37:442
17371997755,14cyclictest17339-21cyclictest12:30:292
17371997755,14cyclictest17339-21cyclictest12:30:292
17371997737,33cyclictest0-21swapper/208:53:112
17371997734,36cyclictest0-21swapper/211:09:042
1737199772,69cyclictest0-21swapper/209:02:522
1736199773,33cyclictest22938-21/usr/sbin/munin09:53:151
1736199773,33cyclictest20781-21grep08:48:271
1736199773,23cyclictest18830-21/usr/sbin/munin08:43:111
1736199773,23cyclictest18830-21/usr/sbin/munin08:43:111
17352997760,9cyclictest6609-21ssh12:07:570
1735299773,52cyclictest6051-21ssh11:12:580
17371997638,32cyclictest24710-21diskmemload09:23:462
17371997636,30cyclictest25933-21kworker/u18:2-events_unbound11:47:432
1737199763,62cyclictest0-21swapper/208:37:532
1737199763,58cyclictest21205-21apt-get07:12:512
1737199763,58cyclictest11810-21apt-get08:22:522
17371997631,36cyclictest0-21swapper/207:37:422
17371997623,44cyclictest26050-21awk09:57:562
1735299767,17cyclictest15-21ksoftirqd/010:27:540
1735299767,17cyclictest15-21ksoftirqd/010:27:540
17371997540,29cyclictest12995-21unixbench_singl11:23:172
17371997537,31cyclictest0-21swapper/211:58:152
17371997537,31cyclictest0-21swapper/211:58:152
1737199752,62cyclictest0-21swapper/207:27:542
1737199752,62cyclictest0-21swapper/207:27:542
17352997556,13cyclictest21470-21fschecks_count11:38:350
17352997556,12cyclictest17339-21cyclictest09:37:380
1735299754,41cyclictest352-21runrttasks11:54:090
1735299753,41cyclictest3799-21ls12:03:020
1737199744,65cyclictest0-21swapper/211:13:222
1737199744,64cyclictest0-21swapper/211:52:552
17371997436,31cyclictest0-21swapper/210:43:032
17371997435,32cyclictest0-21swapper/207:43:002
17371997430,37cyclictest0-21swapper/207:50:542
1737199742,67cyclictest0-21swapper/210:17:502
17352997454,13cyclictest18163-21ssh12:27:410
1735299745,36cyclictest12293-21idleruntime11:23:030
1735299744,58cyclictest23263-21/usr/sbin/munin10:48:120
1735299744,37cyclictest16951-21/usr/sbin/munin09:43:070
17352997435,11cyclictest181rcu_preempt08:18:170
1737199737,55cyclictest23045-21apt-get07:18:012
17352997355,13cyclictest17339-21cyclictest09:59:440
1735299735,34cyclictest14949-21cpu11:27:560
1735299733,38cyclictest446-21grep07:48:000
17371997257,9cyclictest6754-21diskmemload12:08:012
17371997255,11cyclictest0-21swapper/210:58:102
1737199723,60cyclictest19604-21apt-get08:47:532
1737199722,59cyclictest21113-21apt-get11:37:532
17352997257,11cyclictest23023-21kworker/u18:1-flush-179:007:54:580
17352997257,11cyclictest23023-21kworker/u18:1-flush-179:007:54:580
17352997254,12cyclictest12069-21ssh12:17:370
1735299725,39cyclictest2418-21/usr/sbin/munin10:13:170
1735299723,36cyclictest5443-21munin-run11:12:390
1737199714,56cyclictest30846-21munin-run07:42:392
1737199713,59cyclictest2374-21systemd-journal08:37:392
1737199713,59cyclictest2374-21systemd-journal08:37:392
1737199713,53cyclictest28703-21ssh09:08:592
17371997133,31cyclictest0-21swapper/210:38:152
1737199712,57cyclictest6168-21/usr/sbin/munin08:03:142
1737199712,57cyclictest6168-21/usr/sbin/munin08:03:142
1735299714,37cyclictest352-21runrttasks08:00:310
1735299714,37cyclictest352-21runrttasks08:00:310
1735299713,21cyclictest24750-21taskset11:43:130
17352997111,33cyclictest18224-21switchtime07:03:140
1737199703,44cyclictest4688-21head07:58:162
1737199703,44cyclictest4688-21head07:58:162
17371997025,39cyclictest9863-21sshd08:16:532
17371997015,35cyclictest17928-21latency07:03:052
17352997052,12cyclictest32388-21ssh10:08:050
17352997047,16cyclictest0-21swapper/008:07:430
17352997047,16cyclictest0-21swapper/008:07:430
1735299704,53cyclictest352-21runrttasks07:10:540
1735299703,35cyclictest352-21runrttasks10:34:330
1735299694,44cyclictest23091-21modprobe08:57:390
1735299694,36cyclictest15624-21grep08:33:120
1735299694,36cyclictest15624-21grep08:33:120
1735299693,45cyclictest29398-21latency_hist07:37:420
17352996927,31cyclictest17498-21timerwakeupswit08:38:140
1737199682,56cyclictest0-21swapper/208:17:552
17352996852,11cyclictest58-21kcompactd008:52:040
17352996848,10cyclictest0-21swapper/010:42:400
1735299684,54cyclictest20300-21acpi10:42:500
1735299683,33cyclictest25992-21latency_hist07:27:430
1737699678,42cyclictest6704-21chrt11:13:383
17371996727,33cyclictest0-21swapper/208:28:162
17371996727,33cyclictest0-21swapper/208:28:162
1735299674,46cyclictest29719-21fschecks_count07:38:020
17352996744,17cyclictest7709-21threads08:08:140
1735299674,35cyclictest27603-21latency_hist07:32:420
1735299674,35cyclictest27603-21latency_hist07:32:420
1735299674,34cyclictest352-21runrttasks08:25:200
1735299674,32cyclictest23263-21fschecks_time09:53:020
1735299673,43cyclictest22548-21munin-run07:17:400
1735299672,35cyclictest18262-21acpi08:42:490
1735299672,35cyclictest18262-21acpi08:42:490
5272660,6sleep30-21swapper/311:03:123
5272660,6sleep30-21swapper/311:03:123
17352996630,10cyclictest58-21kcompactd008:17:180
1737699652,50cyclictest23022-21chrt07:17:483
1735299633,30cyclictest14828-21latency_hist08:32:420
1735299633,30cyclictest14828-21latency_hist08:32:420
1737699622,46cyclictest1091-21taskset11:58:093
1737699622,46cyclictest1091-21taskset11:58:093
1737699613,39cyclictest0-21swapper/309:33:063
1737699612,41cyclictest17787-21chrt07:03:023
1737699612,36cyclictest917-21kworker/3:1+events09:02:553
1737699594,39cyclictest20748-21chrt12:31:543
1737699594,39cyclictest20748-21chrt12:31:543
1737699583,37cyclictest917-21kworker/3:1+events07:33:123
1737699582,38cyclictest917-21kworker/3:1+events08:43:153
1737699582,38cyclictest917-21kworker/3:1+events08:43:153
1737699573,39cyclictest32653-21chrt11:57:403
1737699566,30cyclictest0-21swapper/309:17:543
1737699563,41cyclictest4600-21taskset10:16:163
1737699563,40cyclictest11369-21taskset10:27:513
1737699563,40cyclictest11369-21taskset10:27:513
1737699563,39cyclictest17570-21taskset11:32:393
1737699563,37cyclictest22535-21chrt08:53:143
1737699563,36cyclictest6215-21taskset09:24:003
1737699562,42cyclictest15932-21taskset10:34:353
1737699553,36cyclictest13772-21chrt12:19:013
1737699553,36cyclictest13772-21chrt12:19:013
1737699552,38cyclictest25496-21chrt10:51:253
1737699552,37cyclictest7775-21chrt08:08:153
1737699544,36cyclictest27827-21chrt11:48:163
1737699544,36cyclictest27827-21chrt11:48:163
1737699543,39cyclictest680-21chrt09:15:493
1737699543,35cyclictest17279-21taskset08:38:123
1737699543,34cyclictest9921-21chrt10:24:303
1737699542,38cyclictest29517-21chrt09:09:163
1737699542,38cyclictest20339-21taskset10:42:543
1737699542,36cyclictest20477-21chrt11:37:253
1737699534,31cyclictest0-21swapper/307:53:013
1737699534,31cyclictest0-21swapper/307:53:013
1737699533,35cyclictest24972-21chrt07:23:033
1737699533,34cyclictest15145-21chrt08:32:573
1737699533,34cyclictest15145-21chrt08:32:573
1737699533,32cyclictest29905-21taskset07:38:053
1737699532,36cyclictest24341-21chrt08:58:163
1737699532,36cyclictest12766-21taskset08:23:173
1588225311,26sleep30-21swapper/306:57:583
1737699524,35cyclictest1584-21chrt07:52:393
1737699524,33cyclictest21149-21chrt11:37:543
1737699523,37cyclictest26421-21chrt09:58:043
1737699523,36cyclictest22900-21chrt07:17:443
1737699523,34cyclictest2128-21chrt10:12:393
1737699522,36cyclictest7358-21chrt12:08:153
1737699522,36cyclictest13899-21chrt08:28:073
1737699522,36cyclictest13899-21chrt08:28:073
1737699522,35cyclictest9321-21chrt09:29:233
1737699522,34cyclictest4534-21taskset11:10:093
1737699514,33cyclictest18097-21chrt12:27:403
1737699513,32cyclictest23138-21chrt09:52:583
1737699513,31cyclictest29490-21taskset10:03:073
1737699513,31cyclictest29490-21taskset10:03:073
1737699512,33cyclictest11730-21chrt11:22:423
1737699512,33cyclictest11730-21chrt11:22:423
1737699503,35cyclictest20893-21chrt09:48:163
1737699503,33cyclictest17795-21chrt09:43:133
1737699503,33cyclictest14589-21chrt09:38:073
1737699503,33cyclictest14589-21chrt09:38:073
1737699502,38cyclictest5794-21chrt12:06:493
1737699502,36cyclictest19247-21chrt07:07:483
1737699502,35cyclictest10062-21chrt08:17:423
1737699502,34cyclictest9764-21chrt12:13:013
1737699502,34cyclictest5727-21chrt10:18:023
1737699502,34cyclictest25601-21chrt11:44:473
1737699502,33cyclictest31229-21chrt07:42:553
1737699493,34cyclictest21552-21chrt08:52:423
1737699492,32cyclictest30669-21chrt10:59:073
1737699492,31cyclictest10190-21taskset08:17:503
1737699483,33cyclictest13163-21chrt11:23:353
1737699473,31cyclictest5790-21chrt08:03:043
1737699473,31cyclictest5790-21chrt08:03:043
1737699473,31cyclictest26408-21taskset07:27:573
1737699473,31cyclictest26408-21taskset07:27:573
1737699472,34cyclictest26855-21chrt10:53:073
1737699452,34cyclictest18492-21chrt10:38:243
1737699402,27cyclictest3718-21taskset07:57:463
1737699402,27cyclictest3718-21taskset07:57:463
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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