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2026-07-04 - 12:39
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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 rack1slot8.osadl.org (updated Sat Jul 04, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18895999384,8cyclictest0-21swapper/019:10:250
18896999024,881cyclictest0-21swapper/119:10:251
187252602578,16sleep00-21swapper/019:08:370
1889599398321,53cyclictest0-21swapper/020:37:190
1889699397318,46cyclictest0-21swapper/120:37:201
187832172151,15sleep10-21swapper/119:09:161
4762970,3sleep0478-21grep23:10:150
179432920,3sleep017942-21timerwakeupswit23:40:250
18895997252,14cyclictest0-21swapper/023:55:480
1889599712,54cyclictest26324-21latency_hist21:00:010
18895997117,48cyclictest88850irq/46-eth0-tx-00:05:440
1889599703,57cyclictest5607-21idleruntime-cro23:20:000
1889599703,34cyclictest6528-21ssh21:25:130
18895997021,43cyclictest88850irq/46-eth0-tx-22:52:160
18895997017,47cyclictest88850irq/46-eth0-tx-22:57:320
1889599694,58cyclictest17155-21ssh21:44:170
18895996917,45cyclictest88850irq/46-eth0-tx-00:28:290
18895996913,50cyclictest0-21swapper/022:09:470
1889599683,58cyclictest6572-21idleruntime-cro00:20:010
18895996821,41cyclictest88850irq/46-eth0-tx-23:04:230
18895996819,43cyclictest88850irq/46-eth0-tx-21:17:250
18895996813,49cyclictest88850irq/46-eth0-tx-22:49:590
1889599673,57cyclictest15615-21munin-node20:30:190
18895996717,44cyclictest88850irq/46-eth0-tx-21:49:150
18895996716,45cyclictest88850irq/46-eth0-tx-22:38:390
18895996715,26cyclictest9535-21ssh21:30:150
18895996713,48cyclictest88850irq/46-eth0-tx-21:57:310
18895996645,16cyclictest0-21swapper/021:14:100
1889599664,34cyclictest15640-21ssh00:35:180
18895996621,31cyclictest88850irq/46-eth0-tx-23:45:060
18895996618,42cyclictest88850irq/46-eth0-tx-23:09:270
18895996616,45cyclictest88850irq/46-eth0-tx-22:13:210
1889599654,56cyclictest1095-21munin-node19:50:150
1889599654,54cyclictest11145-21idleruntime-cro23:30:020
1889599654,33cyclictest29915-21diskmemload22:15:240
18895996528,31cyclictest88850irq/46-eth0-tx-00:20:160
1889599652,56cyclictest13815-21runrttasks00:31:190
18895996519,32cyclictest88850irq/46-eth0-tx-23:30:060
18895996516,40cyclictest0-21swapper/021:05:130
18895996514,43cyclictest0-21swapper/022:00:130
18895996443,16cyclictest0-21swapper/023:37:160
18895996429,29cyclictest88850irq/46-eth0-tx-22:40:150
18895996426,32cyclictest88850irq/46-eth0-tx-22:30:130
1889599642,56cyclictest8997-21ssh22:26:220
18895996413,45cyclictest24295-21latency_hist19:25:020
18895996344,14cyclictest0-21swapper/021:22:570
18895996343,15cyclictest0-21swapper/021:52:340
18895996342,16cyclictest0-21swapper/023:51:360
1889599634,53cyclictest26251-21munin-node19:30:190
1889599633,37cyclictest8250-21crond20:10:000
18895996321,29cyclictest88850irq/46-eth0-tx-22:21:480
1889599632,55cyclictest7764-21ssh23:22:590
1889599632,36cyclictest2498-21ssh00:10:350
1889699622,54cyclictest16056-21munin-node20:30:151
1889599624,38cyclictest12605-21ssh21:35:190
1889599624,34cyclictest875-21basename19:50:010
1889599623,53cyclictest21161-21aten_r1power_vo20:45:130
1889599622,46cyclictest4629-21latency_hist20:00:010
1889699613,52cyclictest12511-21sh21:35:171
1889699613,51cyclictest16041-21ssh21:40:281
1889599613,51cyclictest13856-21seq20:25:120
1889699602,52cyclictest23361-21munin-node20:50:181
1889599603,51cyclictest29860-21munin-node19:40:140
18895996026,28cyclictest0-21swapper/000:04:000
1889699599,44cyclictest0-21swapper/121:10:061
1889699596,37cyclictest0-21swapper/123:46:251
1889699595,48cyclictest0-21swapper/121:33:541
1889699593,49cyclictest25823-21sh23:55:181
1889699592,52cyclictest23143-21munin-node19:20:161
1889699592,51cyclictest27947-21latency_hist19:35:011
18896995917,31cyclictest0-21swapper/123:05:151
18896995911,42cyclictest5889-21aten_r1power_po23:20:121
1889599595,48cyclictest0-21swapper/019:15:200
1889599592,51cyclictest28202-21telnet19:35:120
1889599592,51cyclictest23985-21unixbench_singl20:50:270
1889599592,29cyclictest11857-21latency_hist20:20:010
1889699585,47cyclictest0-21swapper/122:29:371
1889699584,48cyclictest3702-21ntpq19:55:211
1889699584,43cyclictest31286-21iostat00:05:181
1889699583,49cyclictest28351-21crond23:01:001
1889699583,49cyclictest15432-21munin-node00:35:141
1889699583,47cyclictest14262-21munin-node20:25:171
1889699582,51cyclictest7764-21munin-node00:20:241
1889699582,51cyclictest25813-21sh22:56:491
1889699582,50cyclictest6095-21sh00:18:231
1889699582,50cyclictest29915-21diskmemload23:44:501
1889699582,50cyclictest25354-21munin-node20:55:221
1889699582,49cyclictest32081-21sh22:10:191
18896995818,35cyclictest28909-21ssh22:05:131
18896995817,35cyclictest2038-21ssh23:12:301
18896995814,37cyclictest26435-21taskset22:00:171
1889599587,45cyclictest0-21swapper/020:00:190
1889599583,32cyclictest26450-21aten_r1power_cu21:00:110
1889599582,50cyclictest9594-21vmstat20:10:260
228699570,4rtkit-daemon2285-21rtkit-daemon19:50:181
1889699575,47cyclictest0-21swapper/121:16:511
1889699575,46cyclictest0-21swapper/122:30:091
1889699574,48cyclictest0-21swapper/121:27:181
1889699573,48cyclictest28889-21munin-node00:00:241
1889699573,48cyclictest28383-21munin-node21:05:141
1889699573,48cyclictest1568-21runrttasks00:30:181
1889699573,47cyclictest18843-21awk22:45:121
1889699573,45cyclictest14635-21runrttasks23:35:171
1889699572,49cyclictest17900-21ssh21:45:141
1889699572,49cyclictest10090-21ssh00:25:181
18896995711,26cyclictest0-21swapper/122:37:231
1889599572,45cyclictest11857-21latency_hist20:20:010
1889699564,47cyclictest0-21swapper/121:20:061
1889699564,46cyclictest20394-21munin-node20:40:261
1889699563,47cyclictest0-21swapper/122:16:291
1889699563,45cyclictest22115-21unixbench_multi20:45:271
1889699563,37cyclictest88750irq/45-eth0-rx-00:10:191
1889699562,48cyclictest23781-21munin-node21:55:201
18896995616,35cyclictest0-21swapper/123:30:161
18896995614,35cyclictest21944-21sh22:50:171
18896995610,39cyclictest2211-21Xorg20:23:001
1889599564,32cyclictest1568-21runrttasks19:25:460
1889699554,44cyclictest22973-21irqstats23:50:171
1889699553,47cyclictest16475-21munin-node22:40:201
1889699553,45cyclictest4233-21munin-node23:15:281
1889699553,45cyclictest10438-21munin-node20:15:141
1889699553,44cyclictest5255-21iostat22:20:171
1889699552,48cyclictest28085-21munin-node19:35:111
1889699552,47cyclictest21212-21munin-node19:15:151
1889699552,46cyclictest9011-21munin-node20:10:191
1889699552,46cyclictest20460-21aten2.4-expect21:50:121
1889699552,44cyclictest32264-21munin-node19:45:181
18896995511,38cyclictest5859-21unixbench_multi20:00:251
1889599553,46cyclictest19228-21munin-node20:40:140
1889699543,45cyclictest26575-21munin-node21:00:121
1889699542,45cyclictest6622-21aten2.4-expect20:05:121
1889699532,45cyclictest29861-21munin-node19:40:121
1889699532,45cyclictest24680-21munin-node19:25:131
18896995316,32cyclictest9624-21cat23:25:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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