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2026-09-08 - 01:28
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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 792 highest latencies:
System rack1slot8.osadl.org (updated Tue Sep 08, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
263962567546,14sleep10-21swapper/119:07:101
2671799544456,76cyclictest0-21swapper/019:12:150
26718994764,13cyclictest0-21swapper/119:12:151
265792293270,16sleep00-21swapper/019:08:580
82332890,3chrt8236-21unixbench-2d19:45:250
2671899747,16cyclictest0-21swapper/123:41:101
2671799749,38cyclictest19937-21iostat21:35:190
2671799749,38cyclictest19937-21iostat21:35:190
2671799742,66cyclictest20150-21sshd22:35:170
2671899736,17cyclictest0-21swapper/122:15:131
2671899736,16cyclictest0-21swapper/122:36:011
2671799732,64cyclictest9198-21gltestperf22:15:150
228699730,4rtkit-daemon2285-21rtkit-daemon21:58:500
197542730,4sleep019755-21ssh00:34:210
2671899728,16cyclictest0-21swapper/123:02:371
2671899727,17cyclictest0-21swapper/119:52:031
2671899726,17cyclictest0-21swapper/100:31:391
2671899725,17cyclictest0-21swapper/121:24:091
2671899725,14cyclictest0-21swapper/122:54:211
2671899716,18cyclictest0-21swapper/122:47:471
2671899716,17cyclictest0-21swapper/121:32:361
2671899715,18cyclictest0-21swapper/122:23:531
2671899715,16cyclictest0-21swapper/122:56:591
2671899715,16cyclictest0-21swapper/121:50:301
2671899715,11cyclictest17164-21ssh22:30:141
2671799712,63cyclictest11412-21missed_timers19:55:200
26717997119,45cyclictest8250irq/14-pata_sch23:40:000
242232710,4sleep024224-21ssh23:41:550
2671899706,18cyclictest0-21swapper/121:26:051
2671899706,17cyclictest0-21swapper/123:26:401
2671899706,17cyclictest0-21swapper/123:05:531
2671899706,17cyclictest0-21swapper/121:36:111
2671899706,17cyclictest0-21swapper/121:36:101
2671899705,17cyclictest0-21swapper/123:11:041
2671899705,15cyclictest0-21swapper/122:25:221
2671799702,54cyclictest20723-21munin-node00:35:190
2671899696,28cyclictest0-21swapper/100:36:301
2671899696,18cyclictest0-21swapper/121:05:301
2671899696,17cyclictest0-21swapper/121:55:141
2671899696,17cyclictest0-21swapper/121:46:151
2671899696,16cyclictest0-21swapper/123:18:151
2671899695,28cyclictest0-21swapper/123:23:211
2671899695,19cyclictest0-21swapper/123:57:471
2671899695,18cyclictest0-21swapper/121:00:261
2671899695,16cyclictest0-21swapper/119:56:101
2671799693,36cyclictest16939-21df21:30:170
2671799692,60cyclictest26340-21unixbench_multi20:35:280
2671899686,19cyclictest0-21swapper/120:10:021
2671899686,17cyclictest0-21swapper/123:35:341
2671899686,17cyclictest0-21swapper/120:55:011
2671899686,17cyclictest0-21swapper/119:15:141
2671899686,16cyclictest0-21swapper/120:40:281
2671899686,15cyclictest0-21swapper/120:22:091
2671899685,17cyclictest0-21swapper/120:25:191
2671899685,16cyclictest0-21swapper/123:46:251
2671899685,16cyclictest0-21swapper/122:02:101
2671899683,12cyclictest4028-21missed_timers22:05:211
2671799682,60cyclictest30504-21latency_hist20:50:010
2671799682,48cyclictest0-21swapper/023:24:350
2671799682,39cyclictest3199-21munin-run22:05:000
2671899678,15cyclictest0-21swapper/119:20:141
2671899676,17cyclictest0-21swapper/123:54:191
2671899676,17cyclictest0-21swapper/123:34:051
2671899676,17cyclictest0-21swapper/121:40:051
2671899676,15cyclictest0-21swapper/121:13:311
2671899675,16cyclictest0-21swapper/100:25:181
2671899675,15cyclictest0-21swapper/120:15:131
2671899673,8cyclictest6722-21ls22:10:211
2671799675,45cyclictest0-21swapper/023:16:260
2671799674,56cyclictest0-21swapper/000:21:170
2671899666,15cyclictest0-21swapper/121:19:401
2671899665,16cyclictest0-21swapper/100:10:241
2671899665,15cyclictest0-21swapper/122:40:311
2671899665,14cyclictest0-21swapper/100:15:221
2671899663,9cyclictest8846-21munin-run19:50:001
26718996616,7cyclictest1568-21runrttasks20:01:381
26718996615,8cyclictest0-21swapper/100:20:151
26718996614,10cyclictest88750irq/45-eth0-rx-00:00:281
2671799662,59cyclictest27572-21latency_hist22:50:010
2671799662,58cyclictest835-21lldpad22:21:350
2671799662,58cyclictest14609-21ssh23:25:140
2671799662,57cyclictest4887-21ssh22:06:240
2671799662,57cyclictest25282-21munin-node23:45:280
2671799662,57cyclictest10020-21ssh21:17:070
2671799662,46cyclictest19450-21runrttasks22:35:000
2671799662,33cyclictest11812-21latency_hist00:20:010
2671899657,16cyclictest0-21swapper/119:30:151
2671899656,18cyclictest0-21swapper/120:35:131
2671899656,16cyclictest0-21swapper/120:55:171
2671899655,17cyclictest0-21swapper/119:25:371
2671899654,9cyclictest16542-21munin-node20:10:151
2671899654,10cyclictest5903-21munin-node19:40:151
2671899653,20cyclictest88750irq/45-eth0-rx-00:05:251
2671899652,10cyclictest29897-21unixbench-2d20:45:241
2671799655,45cyclictest0-21swapper/021:26:190
2671799652,58cyclictest32115-21latency_hist19:25:010
2671799652,57cyclictest27984-21sh23:50:060
2671799652,57cyclictest15423-21munin-node20:05:260
2671799652,42cyclictest6116-21ssh22:10:130
2671799652,35cyclictest27716-21ssh22:50:010
2671799652,34cyclictest5384-21munin-node19:40:260
26717996519,40cyclictest88850irq/46-eth0-tx-23:03:070
26717996516,43cyclictest23335-21sort20:30:020
2671899647,17cyclictest0-21swapper/120:30:241
2671899645,19cyclictest0-21swapper/119:40:001
2671799643,55cyclictest2887-21switchtime21:00:260
2671799642,57cyclictest30313-21latency_hist19:20:010
2671799642,56cyclictest994-21ssh00:00:090
2671799642,56cyclictest1678-21latency_hist19:30:010
2671799642,55cyclictest23793-21ssh21:42:050
2671799642,55cyclictest12615-21ssh21:21:350
2671799642,46cyclictest69422chrt21:11:020
2671799642,38cyclictest30051-21latency_hist21:55:010
2671799637,51cyclictest24311-21ssh22:43:060
2671799633,40cyclictest16231-21munin-node20:10:150
2671799633,35cyclictest19688-21munin-run23:35:000
26717996321,37cyclictest88850irq/46-eth0-tx-19:30:150
2671799632,54cyclictest3864-21munin-node00:05:200
2671799632,54cyclictest10069-21unixbench_multi19:50:260
2671799632,38cyclictest7867-21ssh23:11:330
26717996319,38cyclictest88850irq/46-eth0-tx-00:25:100
2671799625,45cyclictest0-21swapper/020:51:590
2671799623,53cyclictest5871-21ssh23:09:060
2671799622,42cyclictest27052-21munin-node20:40:120
2671799622,40cyclictest8197-21ssh00:11:470
2671799622,38cyclictest31765-21ssh22:55:420
2671799615,50cyclictest0-21swapper/019:35:300
2671799613,45cyclictest26863-21ssh21:48:200
26717996114,41cyclictest88850irq/46-eth0-tx-22:25:150
2671799602,52cyclictest32747-21df_abs20:55:130
26717996014,29cyclictest0-21swapper/023:56:480
2671799594,49cyclictest0-21swapper/020:05:000
2671799583,35cyclictest20439-21sshd20:20:180
2671799582,49cyclictest5431-21crond21:10:000
26717995734,15cyclictest0-21swapper/020:16:100
2671799572,49cyclictest23965-21sshd20:30:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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