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2026-05-08 - 09:15
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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 Fri May 08, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
224721498,24sleep20-21swapper/218:57:142
33479912843,58cyclictest0-21swapper/200:26:532
32949912151,17cyclictest10363-21latency_hist19:21:390
3322991192,97cyclictest2937-21apt-get21:41:591
3322991192,97cyclictest2937-21apt-get21:41:591
3360991182,44cyclictest25501-21chrt23:11:513
3322991184,92cyclictest27133-21apt-get22:21:511
32949911650,14cyclictest27900-21kworker/u17:1+xprtiod21:35:320
32949911650,14cyclictest27900-21kworker/u17:1+xprtiod21:35:320
32949911650,14cyclictest27900-21kworker/u17:1+xprtiod21:35:320
3294991163,52cyclictest30106-21/usr/sbin/munin20:22:020
32949911348,20cyclictest22185-21ssh21:19:480
3294991133,35cyclictest15002-21switchtime23:47:140
293721107,84sleep00-21swapper/019:00:220
32949910946,16cyclictest15792-21ssh21:08:460
33479910883,15cyclictest3279-21cyclictest23:11:412
32949910847,14cyclictest4005-21ssh23:29:480
33479910347,40cyclictest3279-21cyclictest23:50:592
3322991013,73cyclictest17428-21apt-get23:51:561
297121006,16sleep10-21swapper/119:00:471
3347999958,34cyclictest29854-21sh20:21:372
329499987,40cyclictest2937-21apt-get21:41:520
329499987,40cyclictest2937-21apt-get21:41:520
334799953,68cyclictest3063-21apt-get19:01:552
332299952,55cyclictest1143-21apt-get20:31:561
3294999452,9cyclictest17666-21ssh22:58:110
3347999349,38cyclictest0-21swapper/223:46:402
3322999371,14cyclictest20115-21latency_hist19:51:391
332299932,80cyclictest25542-21ssh23:11:591
329499935,30cyclictest25478-21apt-get23:11:590
336099929,68cyclictest20457-21chrt19:52:033
3347999267,19cyclictest10636-21kernelversion22:47:022
3322999236,48cyclictest9189-21apt-get21:52:041
3294999277,8cyclictest0-21swapper/023:51:540
3294999274,13cyclictest15350irq/295-2188000.ethernet23:41:540
3294999251,35cyclictest19988-21latency_hist21:16:400
3294999251,35cyclictest19988-21latency_hist21:16:400
3347999163,20cyclictest19960-21gpgv19:51:412
3347999154,33cyclictest3279-21cyclictest23:27:152
329499908,71cyclictest9189-21apt-get21:51:550
3347998923,54cyclictest25478-21apt-get23:11:512
332299892,55cyclictest10695-21apt-get23:41:521
334799887,64cyclictest24515-21ssh22:16:592
3347998867,14cyclictest24511-21unixbench_multi00:02:142
3347998848,34cyclictest5659-21cpu19:06:572
3347998848,34cyclictest5659-21cpu19:06:572
3347998761,18cyclictest20696-21fschecks_count19:52:542
3347998743,36cyclictest0-21swapper/222:01:372
332299873,60cyclictest20434-21apt-get19:52:041
3322998727,33cyclictest10821-21diskmemload21:37:591
3347998642,36cyclictest0-21swapper/221:11:402
3347998638,41cyclictest0-21swapper/222:11:372
332299869,36cyclictest10438-21ls19:21:401
3347998545,33cyclictest0-21swapper/221:46:582
3347998544,34cyclictest0-21swapper/219:31:592
3347998544,34cyclictest0-21swapper/219:31:592
334799853,62cyclictest9281-21ssh21:52:022
3294998521,45cyclictest2558-21cut21:41:400
334799843,70cyclictest0-21swapper/221:36:512
329499847,53cyclictest20629-21apt-get23:56:560
3294998462,16cyclictest298-21in:imuxsock20:56:370
3294998462,16cyclictest298-21in:imuxsock20:56:370
334799837,61cyclictest2398-21apt-get21:41:562
334799837,61cyclictest2398-21apt-get21:41:562
3347998356,17cyclictest8079-21fschecks_time20:51:592
3347998356,17cyclictest8079-21fschecks_time20:51:592
3347998341,35cyclictest0-21swapper/223:17:142
3347998335,36cyclictest17650-21kworker/u17:4-xprtiod23:56:412
3347998252,21cyclictest5946-21timerwakeupswit23:32:132
3322998253,21cyclictest24020-21apt-key22:16:391
3322998253,21cyclictest24020-21apt-key22:16:391
332299822,56cyclictest3630-21kworker/u18:019:02:051
336099814,40cyclictest22850-21taskset21:21:363
3347998163,12cyclictest11085-21ntpd22:16:412
334799813,71cyclictest0-21swapper/219:41:522
334799812,67cyclictest0-21swapper/219:26:482
334799812,67cyclictest0-21swapper/219:26:482
3322998150,22cyclictest352-21runrttasks22:37:111
332299813,62cyclictest4610-21apt-get20:41:531
329499817,67cyclictest24232-21kworker/u19:1+flush-179:019:02:050
3294998164,11cyclictest13324-21rm21:57:180
3294998155,18cyclictest25215-21apt-key23:11:410
3294998142,29cyclictest0-21swapper/022:23:470
225028111,39sleep30-21swapper/318:57:153
3347998049,19cyclictest4109-21apt-get20:41:532
3347998040,34cyclictest17141-21/usr/sbin/munin21:12:122
3347998040,34cyclictest17141-21/usr/sbin/munin21:12:122
334799803,70cyclictest0-21swapper/222:22:462
334799803,48cyclictest3861-21cat00:22:122
334799803,48cyclictest3861-21cat00:22:122
3322998058,16cyclictest8849-21switchtime23:37:121
3322998050,21cyclictest10821-21diskmemload23:02:111
329499803,57cyclictest352-21runrttasks00:29:320
334799799,61cyclictest614-21apt-get20:31:562
334799793,70cyclictest0-21swapper/223:01:502
3347997936,36cyclictest297-21systemd-logind22:06:392
3347997936,36cyclictest297-21systemd-logind22:06:392
3322997956,15cyclictest2374-21systemd-journal19:58:421
3322997954,16cyclictest7271-21/usr/sbin/munin19:12:161
3294997962,11cyclictest10821-21diskmemload22:41:370
3294997958,15cyclictest7618-21if_eth019:12:020
329499794,34cyclictest22191-21wc22:12:130
329499794,34cyclictest22191-21wc22:12:130
3294997943,10cyclictest181rcu_preempt00:11:520
3294997943,10cyclictest181rcu_preempt00:11:520
329499793,65cyclictest24035-21kernelversion20:02:010
3347997861,11cyclictest277-21dbus-daemon22:56:382
3347997861,11cyclictest277-21dbus-daemon22:56:382
334799783,69cyclictest0-21swapper/221:16:502
334799783,64cyclictest0-21swapper/220:06:512
3347997834,37cyclictest0-21swapper/221:32:322
3347997834,37cyclictest0-21swapper/221:32:322
3347997834,37cyclictest0-21swapper/221:32:322
3347997832,39cyclictest0-21swapper/200:16:532
3322997850,18cyclictest29455-21fschecks_time21:32:001
3322997850,18cyclictest29455-21fschecks_time21:32:001
3322997850,18cyclictest29455-21fschecks_time21:32:001
3322997835,33cyclictest24574-21grep20:02:131
3322997832,30cyclictest3279-21cyclictest23:47:041
3294997860,12cyclictest5249-21ssh00:25:360
3294997860,12cyclictest5249-21ssh00:25:360
3294997858,13cyclictest24539-21kworker/u17:4+xprtiod22:31:560
329499784,63cyclictest352-21runrttasks22:48:050
334799773,69cyclictest0-21swapper/222:11:522
334799773,69cyclictest0-21swapper/219:21:532
3347997726,45cyclictest0-21swapper/222:58:092
3347997722,45cyclictest0-21swapper/222:44:492
3347997722,45cyclictest0-21swapper/222:44:492
332299772,35cyclictest3912-21munin-run22:36:361
3294997761,9cyclictest11077-21ssh23:41:410
3294997755,15cyclictest11085-21ntpd19:07:160
3294997755,15cyclictest11085-21ntpd19:07:160
336099762,45cyclictest0-21swapper/322:17:053
3347997654,14cyclictest10821-21diskmemload00:12:012
3347997654,14cyclictest10821-21diskmemload00:12:012
3347997647,19cyclictest4456-21latency_hist20:41:402
334799764,62cyclictest24539-21kworker/u17:4+xprtiod22:37:032
3347997631,36cyclictest0-21swapper/223:41:412
3347997629,39cyclictest0-21swapper/220:31:382
3294997653,15cyclictest9301-21kworker/u17:2+rpciod21:06:410
3294997653,15cyclictest9301-21kworker/u17:2+rpciod21:06:410
329499758,35cyclictest352-21runrttasks22:45:040
329499758,35cyclictest352-21runrttasks22:45:040
3294997553,16cyclictest6055-21ssh21:46:540
329499754,37cyclictest352-21runrttasks21:31:400
329499754,37cyclictest352-21runrttasks21:31:400
3294997541,25cyclictest11842-21apt19:26:370
329499753,39cyclictest352-21runrttasks00:04:110
3360997417,31cyclictest0-21swapper/322:22:333
3347997459,10cyclictest10238-21sh19:21:372
334799743,61cyclictest0-21swapper/220:21:502
3347997432,34cyclictest0-21swapper/221:01:502
3347997432,34cyclictest0-21swapper/221:01:502
3322997424,11cyclictest181rcu_preempt00:02:141
3294997455,13cyclictest15177-21/usr/sbin/munin22:01:550
3294997455,13cyclictest15177-21/usr/sbin/munin22:01:550
329499745,39cyclictest30655-21/usr/sbin/munin22:27:150
329499745,34cyclictest31698-21fschecks_count23:22:000
3294997442,26cyclictest1-21systemd21:24:250
3294997440,14cyclictest181rcu_preempt22:51:480
3294997440,14cyclictest181rcu_preempt22:51:480
334799734,64cyclictest0-21swapper/220:46:522
3347997327,38cyclictest0-21swapper/223:21:562
3322997355,11cyclictest0-21swapper/100:12:011
3322997355,11cyclictest0-21swapper/100:12:011
332299734,50cyclictest23902-21apt-get22:16:521
329499734,46cyclictest21863-21latency_hist19:56:390
3347997233,32cyclictest0-21swapper/219:12:112
334799722,61cyclictest20083-21apt-get23:56:542
3322997255,11cyclictest2374-21systemd-journal22:06:381
3322997255,11cyclictest2374-21systemd-journal22:06:381
3322997252,14cyclictest277-21dbus-daemon20:41:381
3322997251,14cyclictest300-21rs:main1
3322997251,14cyclictest300-21rs:main1
332299722,32cyclictest12221-21grep21:02:131
332299722,32cyclictest12221-21grep21:02:131
3294997243,21cyclictest1362-21fschecks_count20:32:170
3294997241,10cyclictest181rcu_preempt20:42:120
3294997232,33cyclictest0-21swapper/020:31:400
329499722,26cyclictest27272-21switchtime00:07:120
334799713,51cyclictest9690-21grep20:56:592
3347997131,33cyclictest0-21swapper/221:22:132
3322997154,11cyclictest298-21in:imuxsock19:46:371
3322997148,15cyclictest7679-21idleruntime-cro23:36:361
3322997142,21cyclictest913-21apt-key20:31:411
329499714,31cyclictest24410-21/usr/sbin/munin22:17:330
329499713,53cyclictest16270-21unixbench_multi19:37:140
329499713,53cyclictest16270-21unixbench_multi19:37:140
329499713,41cyclictest32453-21ssh00:16:490
334799703,58cyclictest30676-21apt-get22:26:492
3347997030,33cyclictest0-21swapper/220:02:112
334799702,59cyclictest26155-21apt-get21:26:482
334799702,59cyclictest26155-21apt-get21:26:482
3322997048,15cyclictest2374-21systemd-journal19:11:391
3322997048,15cyclictest2374-21systemd-journal19:11:391
329499703,39cyclictest17199-21fschecks_time19:41:590
336099693,29cyclictest31043-21chrt22:27:013
336099692,23cyclictest19306-21chrt23:54:263
334799692,60cyclictest373-21lldpd20:11:482
334799692,60cyclictest1231-21ssh22:31:482
3322996952,10cyclictest4651-21cron23:31:361
3322996944,16cyclictest277-21dbus-daemon21:26:381
3322996911,26cyclictest14080-21seq21:06:421
3322996910,28cyclictest27489-21seq21:27:541
3322996910,28cyclictest27489-21seq21:27:541
3294996951,12cyclictest277-21dbus-daemon21:01:380
3294996940,9cyclictest181rcu_preempt19:31:520
3294996940,9cyclictest181rcu_preempt19:31:520
329499693,31cyclictest5295-21fschecks_time23:31:590
329499692,36cyclictest28771-21fschecks_time23:17:000
336099683,29cyclictest22084-21chrt19:56:523
336099682,29cyclictest7293-21chrt19:11:503
3360996816,28cyclictest0-21swapper/319:01:563
334799683,60cyclictest0-21swapper/219:36:512
334799683,60cyclictest0-21swapper/219:36:512
334799683,60cyclictest0-21swapper/200:06:482
3322996849,13cyclictest32529-21unixbench_singl23:22:151
3322996849,13cyclictest10821-21diskmemload23:56:541
3322996844,16cyclictest11009-21switchtime22:47:111
332299683,32cyclictest24904-21apt-get23:11:411
3322996825,28cyclictest5797-21cat00:26:401
3322996825,28cyclictest5797-21cat00:26:401
3322996817,12cyclictest181rcu_preempt19:32:111
3322996817,12cyclictest181rcu_preempt19:32:111
329499684,30cyclictest18187-21/usr/sbin/munin22:07:110
3294996842,13cyclictest0-21swapper/020:12:090
329499683,31cyclictest3379-21grep20:37:090
336099673,30cyclictest5173-21taskset00:25:233
336099673,30cyclictest5173-21taskset00:25:233
336099672,31cyclictest28869-21chrt23:17:023
332299676,27cyclictest26759-21fschecks_time00:06:591
3322996746,15cyclictest396-21kernelversion00:17:021
332299674,45cyclictest352-21runrttasks22:30:381
332299674,42cyclictest6363-21kernelversion00:27:051
332299673,44cyclictest30679-21ssh23:20:221
3322996725,30cyclictest10329-21timerwakeupswit20:57:141
329499673,42cyclictest352-21runrttasks20:06:410
336099662,27cyclictest12539-21chrt23:42:513
336099662,23cyclictest9988-21chrt21:52:243
3347996617,40cyclictest22976-21sed19:57:122
3322996638,20cyclictest14086-21sh21:59:271
332299663,27cyclictest13057-21grep19:27:131
332299663,27cyclictest13057-21grep19:27:131
332299663,26cyclictest8854-21apt-key21:51:401
3322996623,32cyclictest12004-21cat19:26:401
3294996651,8cyclictest0-21swapper/023:01:480
3294996639,21cyclictest544-21cron20:01:370
3294996636,9cyclictest181rcu_preempt20:46:580
329499663,52cyclictest18548-21/usr/sbin/munin19:47:050
329499663,42cyclictest352-21runrttasks19:31:400
329499663,42cyclictest352-21runrttasks19:31:400
336099653,25cyclictest20598-21chrt23:56:463
336099653,24cyclictest21236-21chrt22:11:493
336099653,24cyclictest21236-21chrt22:11:493
336099652,30cyclictest11760-21chrt19:25:433
336099652,23cyclictest7852-21chrt22:42:093
336099652,23cyclictest7852-21chrt22:42:093
336099652,23cyclictest30229-21chrt20:21:543
3322996544,12cyclictest0-21swapper/122:42:141
3322996544,12cyclictest0-21swapper/122:42:141
3322996544,11cyclictest0-21swapper/122:07:161
332299653,39cyclictest28418-21latency_hist20:16:401
3322996516,36cyclictest28490-21sshd20:16:421
3294996535,21cyclictest29273-21xargs20:17:110
336099645,32cyclictest0-21swapper/320:31:573
336099644,27cyclictest25898-21taskset21:26:393
336099643,28cyclictest14810-21taskset21:07:103
336099643,26cyclictest18034-21chrt21:12:133
336099643,26cyclictest18034-21chrt21:12:133
336099643,23cyclictest14734-21chrt22:01:163
336099643,22cyclictest18235-21chrt22:06:553
336099643,21cyclictest322-21chrt20:28:103
336099642,27cyclictest28454-21chrt21:30:363
336099642,27cyclictest28454-21chrt21:30:363
336099642,24cyclictest17559-21chrt22:57:533
336099642,23cyclictest7822-21chrt00:29:283
3322996448,10cyclictest23286-21kworker/u17:1-rpciod20:11:371
3322996443,10cyclictest0-21swapper/121:17:111
332299643,40cyclictest352-21runrttasks20:52:491
332299643,40cyclictest352-21runrttasks20:52:491
332299643,32cyclictest31018-21unixbench_multi20:22:151
332299643,22cyclictest7107-21grep20:47:131
3322996417,20cyclictest0-21swapper/122:58:281
336099633,24cyclictest7053-21taskset23:34:533
336099633,24cyclictest17494-21chrt19:42:073
336099632,24cyclictest4713-21chrt21:44:063
336099632,24cyclictest4713-21chrt21:44:063
336099632,23cyclictest3539-21chrt22:35:363
336099632,23cyclictest11995-21chrt21:02:113
336099632,23cyclictest11995-21chrt21:02:113
336099623,25cyclictest21222-21chrt23:04:463
336099623,23cyclictest1947-21taskset23:26:463
336099622,22cyclictest12268-21chrt19:26:563
336099622,22cyclictest12268-21chrt19:26:563
3322996236,19cyclictest14435-21kworker/u17:0+events_unbound22:56:371
3322996236,19cyclictest14435-21kworker/u17:0+events_unbound22:56:371
336099613,24cyclictest6640-21chrt22:40:553
336099613,23cyclictest2506-21chrt00:21:173
336099612,24cyclictest29558-21chrt21:32:023
336099612,24cyclictest29558-21chrt21:32:023
336099612,24cyclictest29558-21chrt21:32:023
336099612,23cyclictest8629-21chrt23:37:073
336099612,22cyclictest8970-21chrt20:53:493
336099612,22cyclictest8970-21chrt20:53:493
3322996140,15cyclictest17722-21ntp_kernel_err21:12:051
3322996140,15cyclictest17722-21ntp_kernel_err21:12:051
336099603,25cyclictest24757-21taskset23:11:143
336099603,22cyclictest17914-21chrt22:06:393
336099603,22cyclictest17914-21chrt22:06:393
336099603,17cyclictest28370-21chrt20:16:403
336099602,26cyclictest13329-21chrt22:51:533
336099602,26cyclictest13329-21chrt22:51:533
336099602,21cyclictest7402-21chrt20:49:443
336099602,21cyclictest27228-21chrt00:07:113
336099593,24cyclictest28525-21chrt20:16:523
336099593,24cyclictest16225-21chrt23:49:523
336099593,22cyclictest24791-21chrt20:04:053
336099583,19cyclictest25717-21chrt20:07:053
336099582,24cyclictest24333-21chrt00:02:123
336099582,23cyclictest31338-21taskset00:14:243
336099582,23cyclictest31338-21taskset00:14:243
336099582,21cyclictest1969-21chrt21:40:293
336099582,21cyclictest11393-21chrt22:47:273
336099582,19cyclictest4614-21chrt20:41:503
336099572,22cyclictest32662-21chrt23:22:333
336099572,22cyclictest14938-21chrt19:34:543
336099572,22cyclictest14938-21chrt19:34:543
336099572,22cyclictest10007-21chrt19:18:513
336099572,21cyclictest5243-21chrt19:06:443
336099572,21cyclictest5243-21chrt19:06:443
336099563,21cyclictest16350-21chrt19:37:213
336099563,21cyclictest16350-21chrt19:37:213
336099562,21cyclictest19666-21chrt19:48:433
336099562,19cyclictest9468-21chrt20:56:493
336099562,19cyclictest3805-21chrt20:37:533
336099562,17cyclictest8451-21chrt21:51:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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