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2026-08-02 - 06:11
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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 Aug 02, 2026 00:44:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2350524590,42sleep30-21swapper/318:52:003
2350524590,42sleep30-21swapper/318:52:003
248409912885,36cyclictest31761-21diskmemload21:31:252
23411212110,78sleep023371-21apt-get18:51:250
23411212110,78sleep023371-21apt-get18:51:250
2379321138,76sleep223798-21uname18:52:132
2379321138,76sleep223798-21uname18:52:132
248409911259,45cyclictest31378-21kworker/u17:2-xprtiod23:56:212
248409911259,45cyclictest31378-21kworker/u17:2-xprtiod23:56:212
248409911140,13cyclictest0-21swapper/200:25:502
248409911140,13cyclictest0-21swapper/200:25:502
248409910760,40cyclictest5506-21unixbench_singl19:31:232
248409910760,40cyclictest5506-21unixbench_singl19:31:232
248379910726,34cyclictest0-21swapper/019:30:580
248379910726,34cyclictest0-21swapper/019:30:580
248389910528,34cyclictest0-21swapper/121:51:001
23377210110,62sleep123371-21apt-get18:51:011
23377210110,62sleep123371-21apt-get18:51:011
2484099995,35cyclictest11859-21/usr/sbin/munin21:16:092
2484099995,35cyclictest11859-21/usr/sbin/munin21:16:092
24840999936,11cyclictest0-21swapper/222:26:232
2484099993,40cyclictest10587-21fschecks_count22:07:152
2484099993,40cyclictest10587-21fschecks_count22:07:152
24840999930,17cyclictest0-21swapper/219:51:092
24840999836,12cyclictest0-21swapper/221:45:582
24840999817,30cyclictest23167-21idleruntime00:16:102
2484099974,34cyclictest14300-21cpuspeed20:01:062
2484099974,34cyclictest14300-21cpuspeed20:01:062
24840999738,12cyclictest0-21swapper/221:05:472
2484099973,37cyclictest4716-21apt-config23:45:512
2484099973,32cyclictest1220-21cat19:20:502
2484099964,38cyclictest4014-21modprobe22:50:462
2484099954,42cyclictest2730-21sort21:00:512
2484099954,42cyclictest2730-21sort21:00:512
2484099954,34cyclictest8923-21timerwakeupswit23:51:292
24840999541,47cyclictest0-21swapper/221:51:112
24840999536,8cyclictest0-21swapper/200:15:492
24840999526,14cyclictest0-21swapper/219:21:032
2484099952,38cyclictest29045-21fschecks_time20:46:082
2484099952,38cyclictest29045-21fschecks_time20:46:082
24840999510,34cyclictest19682-21latency_hist00:10:492
2484099943,37cyclictest30773-21/usr/sbin/munin22:41:252
2484099934,38cyclictest7271-21/usr/sbin/munin22:56:222
2484099934,38cyclictest7271-21/usr/sbin/munin22:56:222
2484099934,29cyclictest12898-21/usr/sbin/munin22:11:082
2484099933,41cyclictest352-21runrttasks23:14:252
2484099933,41cyclictest19329-21wc22:21:152
24840999334,10cyclictest0-21swapper/200:04:442
24840999334,10cyclictest0-21swapper/200:04:442
24840999332,13cyclictest0-21swapper/221:26:122
2484099932,37cyclictest26879-21timerwakeupswit19:00:582
24838999366,21cyclictest7754-21latency_hist23:50:501
2484099924,36cyclictest352-21runrttasks19:49:542
2484099923,39cyclictest28325-21ssh23:31:052
2484099923,39cyclictest28325-21ssh23:31:052
2484099914,39cyclictest31849-21latency_hist19:15:502
2484099914,35cyclictest26898-21latency_hist20:40:502
2484099913,37cyclictest30698-21latency_hist22:40:502
2484099913,37cyclictest30698-21latency_hist22:40:502
2484099905,33cyclictest7752-21/usr/sbin/munin19:41:112
2484099904,34cyclictest26225-21unixbench_multi23:26:242
2484099903,43cyclictest22598-21fschecks_time20:26:112
2484099894,35cyclictest7665-21latency_hist19:40:492
2484099894,35cyclictest7665-21latency_hist19:40:492
2484099894,33cyclictest31623-21latency23:36:122
24838998927,25cyclictest22341-21seq20:26:031
2484099884,36cyclictest16069-21fschecks_count20:06:082
2484099884,35cyclictest24868-21latency_hist23:25:502
2484099884,34cyclictest19192-21cstates20:16:062
2484099883,38cyclictest28144-21timerandwakeup21:42:022
24837998821,29cyclictest2333-21/usr/sbin/munin22:46:240
24837998763,14cyclictest31883-21ssh23:36:190
2484099864,38cyclictest31933-21cat20:55:502
2484099864,34cyclictest23880-21/usr/sbin/munin21:36:142
2484099863,39cyclictest30172-21cat19:10:502
2484099863,33cyclictest17465-21/usr/sbin/munin20:11:032
2484099853,34cyclictest28504-21latency_hist20:45:492
2483799859,40cyclictest0-21swapper/021:56:310
2483799859,40cyclictest0-21swapper/021:56:310
2484099844,32cyclictest352-21runrttasks21:21:292
2484099844,29cyclictest3892-21cpu21:56:212
2484099844,29cyclictest3892-21cpu21:56:212
2484099842,37cyclictest5505-21cpu23:47:322
24838998425,29cyclictest803-21sendmail-mta21:41:061
24837998464,14cyclictest12937-21idleruntime-cro23:05:460
24837998464,14cyclictest12937-21idleruntime-cro23:05:460
24837998431,44cyclictest6167-21apt-get19:35:590
24837998431,44cyclictest6167-21apt-get19:35:590
24837998418,28cyclictest30529-21sort21:46:140
24838998361,16cyclictest2374-21systemd-journal00:23:351
24838998361,16cyclictest2374-21systemd-journal00:23:351
24837998362,15cyclictest30589-21sh22:40:490
24837998362,15cyclictest30589-21sh22:40:490
24837998358,15cyclictest23160-21timerwakeupswit20:26:240
24840998248,25cyclictest4280-21modprobe19:30:472
24837998218,24cyclictest16758-21sh23:11:120
2484099813,40cyclictest10646-21ssh23:01:122
2484099813,40cyclictest10646-21ssh23:01:122
24838998166,10cyclictest24822-21cyclictest21:10:261
2483799815,48cyclictest5225-21ssh23:46:450
24837998122,17cyclictest10221-21apt-get22:06:400
24837998122,17cyclictest10221-21apt-get22:06:400
24837998116,20cyclictest0-21swapper/022:51:590
24838998019,32cyclictest4395-21basename23:45:461
24838998019,23cyclictest0-21swapper/123:19:271
24838998017,30cyclictest4616-21fschecks_time22:51:101
24838998016,29cyclictest21733-21latency_hist22:25:491
24837998064,10cyclictest31761-21diskmemload22:26:130
24837998041,25cyclictest28711-21apt-get19:06:030
24837998020,23cyclictest10321-21unixbench_multi19:46:230
24837998016,26cyclictest17730-21cat00:06:220
312952790,8sleep10-21swapper/120:51:241
24838997916,30cyclictest0-21swapper/121:26:091
24837997959,13cyclictest297-21systemd-logind21:25:470
24837997958,15cyclictest24822-21cyclictest23:24:560
24837997953,20cyclictest27015-21latency_hist20:40:500
24837997926,24cyclictest27008-21sh00:21:380
24837997926,24cyclictest27008-21sh00:21:380
24837997921,28cyclictest4688-21latency_hist23:45:510
24837997916,29cyclictest15632-21rm23:09:580
24838997858,12cyclictest0-21swapper/122:30:461
24838997833,8cyclictest181rcu_preempt20:56:171
24838997833,8cyclictest181rcu_preempt20:56:171
24837997862,12cyclictest24822-21cyclictest00:16:100
24837997819,20cyclictest8927-21chrt22:04:280
24837997817,27cyclictest21969-21latency_hist23:20:490
24837997817,24cyclictest8188-21sed22:56:230
24837997817,24cyclictest8188-21sed22:56:230
24837997815,37cyclictest6522-21ntp_states21:06:180
24838997722,20cyclictest0-21swapper/123:51:141
24837997751,20cyclictest1316-21mailstats21:51:210
24837997734,34cyclictest23941-21apt-get20:31:040
24837997711,27cyclictest0-21swapper/000:03:180
24837997711,27cyclictest0-21swapper/000:03:180
24838997662,8cyclictest0-21swapper/119:05:471
24838997660,11cyclictest24822-21cyclictest22:36:241
24838997660,11cyclictest24822-21cyclictest22:36:241
24838997650,17cyclictest11710-21switchtime19:51:211
24838997638,30cyclictest3869-21ssh21:56:171
24838997638,30cyclictest3869-21ssh21:56:171
24838997615,30cyclictest14143-21fschecks_count00:01:091
24838997615,30cyclictest14143-21fschecks_count00:01:091
24838997615,26cyclictest0-21swapper/119:16:001
24837997620,19cyclictest21491-21runrttasks20:21:200
24837997616,29cyclictest22164-21rm21:31:500
24837997616,23cyclictest26974-21timerandwakeup19:00:580
24840997548,12cyclictest0-21swapper/222:05:472
24838997551,12cyclictest0-21swapper/118:57:381
24838997543,24cyclictest25131-21fschecks_time22:31:091
24838997518,20cyclictest18897-21runrttasks00:09:011
24838997513,30cyclictest0-21swapper/122:46:241
24837997553,15cyclictest544-21cron20:00:470
24837997516,28cyclictest30994-21/usr/sbin/munin22:41:070
24837997516,23cyclictest4423-21cut19:30:500
24837997516,23cyclictest20596-21latency_hist20:20:490
24837997514,24cyclictest27775-21cat21:41:530
24837997512,26cyclictest20485-21awk00:11:180
24838997422,30cyclictest863-21seq22:45:271
24838997422,24cyclictest16759-21taskset21:23:321
24837997453,14cyclictest31761-21diskmemload22:31:040
24837997429,32cyclictest2845-21cat19:25:500
24837997415,28cyclictest1156-21sh20:57:360
24837997415,28cyclictest1156-21sh20:57:360
24837997415,26cyclictest19435-21rm21:27:350
24840997342,9cyclictest181rcu_preempt22:51:002
24838997333,33cyclictest0-21swapper/123:10:581
24838997314,29cyclictest22557-21basename23:21:111
24838997313,28cyclictest0-21swapper/123:31:141
24838997313,28cyclictest0-21swapper/123:31:141
24838997313,28cyclictest0-21swapper/121:16:041
24838997313,28cyclictest0-21swapper/121:16:041
24837997352,14cyclictest24822-21cyclictest21:39:380
2483799733,56cyclictest28624-21latency_hist20:45:490
24837997316,19cyclictest30858-21ntpq19:11:170
24837997315,26cyclictest0-21swapper/021:11:220
24837997315,21cyclictest12457-21latency_hist19:55:490
2484099722,35cyclictest15934-21cpu22:16:042
2484099722,35cyclictest15934-21cpu22:16:042
24838997228,36cyclictest0-21swapper/121:36:001
24838997217,24cyclictest0-21swapper/121:46:151
24838997215,25cyclictest31761-21diskmemload22:10:591
2483799729,32cyclictest0-21swapper/022:21:480
24837997254,12cyclictest14651-21wc20:01:150
24837997254,12cyclictest14651-21wc20:01:150
2483799725,23cyclictest0-21swapper/023:56:220
2483799725,23cyclictest0-21swapper/023:56:220
24837997251,13cyclictest7947-21fschecks_count19:41:080
2484199713,36cyclictest19750-21chrt23:16:153
24840997146,19cyclictest21900-21cut23:20:482
2484099713,53cyclictest25430-21ntpq22:31:162
24838997155,12cyclictest0-21swapper/123:00:471
24838997155,12cyclictest0-21swapper/123:00:471
24838997150,15cyclictest11085-21ntpd19:21:091
24838997150,13cyclictest22467-21sh00:15:421
24838997120,23cyclictest11088-21ssh23:56:051
24838997120,23cyclictest11088-21ssh23:56:051
24838997119,26cyclictest6360-21grep19:36:101
24838997119,26cyclictest6360-21grep19:36:101
24838997116,25cyclictest277-21dbus-daemon22:05:471
2483799719,22cyclictest7858-21latency_hist23:50:510
24837997157,10cyclictest24822-21cyclictest22:19:510
24837997157,10cyclictest24822-21cyclictest22:19:510
24837997155,10cyclictest24822-21cyclictest21:02:170
24837997149,16cyclictest12570-21processes21:16:180
24837997149,16cyclictest12570-21processes21:16:180
2484199703,33cyclictest5116-21chrt19:31:183
2484199703,33cyclictest5116-21chrt19:31:183
24840997037,10cyclictest181rcu_preempt20:35:482
24838997055,11cyclictest24822-21cyclictest20:11:081
24838997035,27cyclictest22834-21ssh00:15:591
24838997022,19cyclictest27918-21ssh23:30:481
24838997021,18cyclictest14833-21ssh23:07:421
2483799703,29cyclictest25480-21ssh23:26:090
24837997023,26cyclictest31068-21ssh23:35:500
24837997023,26cyclictest31068-21ssh23:35:500
24837997017,23cyclictest15677-21latency_hist22:15:490
24837997010,26cyclictest0-21swapper/019:16:120
2484199698,44cyclictest0-21swapper/323:46:433
2484199693,34cyclictest22229-21taskset23:21:013
2484199693,33cyclictest30421-21chrt22:40:403
2484199693,33cyclictest30421-21chrt22:40:403
24840996947,11cyclictest0-21swapper/221:06:202
2484099694,45cyclictest20915-21fschecks_count20:21:072
24838996929,35cyclictest0-21swapper/121:31:001
24838996916,24cyclictest9974-21apt-get22:06:021
24838996916,24cyclictest9974-21apt-get22:06:021
24838996912,25cyclictest0-21swapper/122:15:501
24838996912,25cyclictest0-21swapper/122:15:501
24837996942,19cyclictest18829-21/usr/sbin/munin20:15:470
24837996918,19cyclictest28786-21sort20:45:560
24837996918,19cyclictest28786-21sort20:45:560
24837996913,22cyclictest17238-21/usr/sbin/munin20:10:470
2484199683,34cyclictest28534-21taskset00:25:463
2484199683,34cyclictest28534-21taskset00:25:463
2484199683,32cyclictest664-21chrt22:44:543
24840996852,10cyclictest13155-21ntp_offset19:56:192
2484099684,49cyclictest352-21runrttasks21:13:462
24840996829,29cyclictest10002-21kworker/u19:3+nfsiod23:10:202
2483899689,24cyclictest0-21swapper/119:45:541
2483799685,26cyclictest0-21swapper/020:51:100
24837996850,11cyclictest352-21runrttasks19:00:470
2484199674,32cyclictest2589-21chrt23:41:233
24838996751,10cyclictest20433-21munin-plugin-st20:20:481
24838996740,17cyclictest0-21swapper/120:01:251
24838996740,17cyclictest0-21swapper/120:01:251
2483899673,42cyclictest8347-21wc19:41:191
24838996732,28cyclictest0-21swapper/120:05:581
24838996726,31cyclictest25774-21grep20:36:091
24838996633,27cyclictest0-21swapper/120:45:571
24838996633,27cyclictest0-21swapper/120:45:571
24838996627,27cyclictest32003-21grep23:36:211
24838996617,26cyclictest31147-21ls19:11:221
72592650,8sleep30-21swapper/322:01:163
2484199653,32cyclictest4915-21chrt21:04:023
2484199653,26cyclictest25550-21chrt18:57:383
2484099653,43cyclictest26407-21unin-run19:00:482
24838996545,14cyclictest9520-21sh21:11:171
24838996532,22cyclictest2955-21apt-get19:26:001
24838996531,25cyclictest20758-21/usr/sbin/munin20:21:021
24838996530,30cyclictest0-21swapper/119:30:581
24838996530,30cyclictest0-21swapper/119:30:581
24838996516,39cyclictest10573-21ssh23:01:101
24838996516,39cyclictest10573-21ssh23:01:101
2484199643,22cyclictest14976-21chrt00:01:263
2484199643,22cyclictest14976-21chrt00:01:263
24838996448,10cyclictest3676-21rm21:02:101
24838996447,11cyclictest297-21systemd-logind20:00:491
24838996443,11cyclictest0-21swapper/120:31:091
24838996413,28cyclictest0-21swapper/120:45:471
2484199634,26cyclictest23706-21chrt20:30:483
2484199633,33cyclictest1323-21taskset19:21:013
2484199633,27cyclictest29109-21chrt19:06:133
2484199633,27cyclictest26694-21chrt21:40:473
2484199633,27cyclictest16527-21taskset22:16:193
2484199633,27cyclictest16527-21taskset22:16:193
2484199633,24cyclictest27419-21chrt19:01:143
2484199632,29cyclictest31667-21taskset20:54:543
2484199632,21cyclictest14652-21chrt20:01:153
2484199632,21cyclictest14652-21chrt20:01:153
24838996329,26cyclictest29607-21unixbench_multi19:06:231
2484199623,25cyclictest27167-21chrt20:41:013
2484199623,25cyclictest20704-21chrt20:21:003
2484199623,25cyclictest13489-21chrt23:06:103
2484199623,22cyclictest11504-21chrt23:56:153
2484199623,22cyclictest11504-21chrt23:56:153
2484199622,23cyclictest32279-21chrt20:56:073
2484199622,23cyclictest32279-21chrt20:56:073
2484199614,22cyclictest4369-21chrt19:30:493
2484199613,27cyclictest28467-21chrt21:42:213
2484199613,27cyclictest11429-21chrt23:01:363
2484199613,27cyclictest11429-21chrt23:01:363
2484199613,26cyclictest32171-21chrt19:16:053
2484199613,26cyclictest21427-21taskset21:31:153
2484199613,26cyclictest16892-21taskset00:06:003
2484199613,25cyclictest3247-21chrt21:55:473
2484199613,22cyclictest30358-21chrt21:46:103
2484199613,21cyclictest19857-21chrt00:10:593
2484199612,27cyclictest8448-21taskset22:56:333
2484199612,27cyclictest8448-21taskset22:56:333
2484199612,25cyclictest29689-21chrt23:32:323
2484199612,25cyclictest29689-21chrt23:32:323
2484199612,25cyclictest15979-21chrt21:21:263
2484199612,25cyclictest13518-21chrt22:11:173
2484199612,24cyclictest26753-21chrt22:33:433
2484199604,17cyclictest16229-21chrt23:10:563
2484199603,25cyclictest10538-21chrt21:12:543
2484199603,22cyclictest9225-21chrt23:51:573
2484199603,22cyclictest24078-21chrt22:29:333
2484199603,22cyclictest13690-21chrt21:18:213
2484199603,22cyclictest13690-21chrt21:18:213
2484199602,26cyclictest19891-21chrt21:28:513
2484199602,26cyclictest1345-21taskset22:45:593
2484199602,25cyclictest18970-21chrt20:15:493
2484199602,24cyclictest28958-21taskset20:46:073
2484199602,24cyclictest28958-21taskset20:46:073
2484199602,24cyclictest13168-21chrt19:56:213
2484199602,23cyclictest4715-21chrt21:56:413
2484199602,23cyclictest4715-21chrt21:56:413
2484199602,22cyclictest6078-21chrt21:06:053
2484199602,22cyclictest438-21chrt23:38:113
2484199602,22cyclictest23612-21chrt00:16:223
2484199602,21cyclictest30321-21chrt19:10:583
2484199602,21cyclictest27325-21chrt23:29:163
2484199593,25cyclictest20186-21chrt20:17:483
2484199593,22cyclictest8864-21chrt19:42:483
2484199593,22cyclictest5604-21chrt22:51:553
2484199592,24cyclictest20098-21chrt22:21:473
2484199592,24cyclictest16413-21chrt20:06:183
2484199592,24cyclictest12103-21chrt19:52:413
2484199592,21cyclictest6171-21chrt19:36:003
2484199592,21cyclictest6171-21chrt19:36:003
2484199592,21cyclictest11566-21chrt22:07:523
2484199592,21cyclictest11566-21chrt22:07:523
2484199592,20cyclictest26631-21chrt20:37:323
2484199592,20cyclictest10386-21chrt19:46:253
2484199582,20cyclictest23919-21chrt20:30:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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