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2026-05-13 - 00:27
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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
Characteristics of the 50 highest latencies:
System rack1slot1.osadl.org (updated Tue May 12, 2026 12:45:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
230362214152,22sleep20-21swapper/207:09:142
230932207156,25sleep30-21swapper/307:09:563
228552205150,42sleep00-21swapper/007:06:510
209932201158,30sleep10-21swapper/107:05:121
249972540,0sleep30-21swapper/309:20:153
2319699240,0cyclictest0-21swapper/209:50:122
2319699112,8cyclictest26310-21/usr/sbin/munin10:05:162
23196991111,0cyclictest0-21swapper/212:01:542
2319699106,3cyclictest3048-21sh09:34:452
2317999100,1cyclictest0-21swapper/010:30:110
232049999,0cyclictest35-21ksoftirqd/309:26:123
231969999,0cyclictest0-21swapper/211:13:052
231969990,6cyclictest0-21swapper/209:35:322
231969990,1cyclictest23530-21snmpd11:28:492
231879991,4cyclictest0-21swapper/107:40:121
231799995,2cyclictest240-21systemd-journal11:00:010
231799995,2cyclictest240-21systemd-journal11:00:000
231799992,1cyclictest2359-21ssh09:33:000
9465280,0sleep10-21swapper/109:41:081
232049988,0cyclictest32174-21kworker/3:210:47:563
232049987,1cyclictest35-21ksoftirqd/312:30:013
232049986,1cyclictest35-21ksoftirqd/311:50:323
232049986,1cyclictest35-21ksoftirqd/311:50:313
232049986,1cyclictest35-21ksoftirqd/310:05:203
232049986,1cyclictest23530-21snmpd10:58:243
232049986,1cyclictest23530-21snmpd10:58:243
232049986,1cyclictest23530-21snmpd07:10:513
232049982,5cyclictest4905-21perl11:45:143
232049980,7cyclictest7397-21/usr/sbin/munin09:40:193
232049980,5cyclictest31290-21threads08:30:183
232049980,4cyclictest10156-21ssh11:10:113
231969987,1cyclictest31343-21/usr/sbin/munin10:55:212
231969987,1cyclictest31343-21/usr/sbin/munin10:55:202
231969986,1cyclictest61650irq/122-eno112:30:102
231969986,1cyclictest61650irq/122-eno111:55:142
231969986,1cyclictest61650irq/122-eno109:00:002
231969986,1cyclictest23530-21snmpd12:35:342
231969986,1cyclictest23530-21snmpd10:14:242
231969986,1cyclictest23530-21snmpd09:46:282
231969986,1cyclictest23530-21snmpd07:12:102
231969980,5cyclictest0-21swapper/208:32:572
231969980,4cyclictest5689-21/usr/sbin/munin10:20:132
231969980,4cyclictest3041-21seq11:42:382
231879980,5cyclictest0-21swapper/111:55:131
231879980,2cyclictest0-21swapper/109:20:111
231799987,1cyclictest29050-21ssh10:08:020
231799986,1cyclictest9-21ksoftirqd/008:35:010
231799986,1cyclictest9-21ksoftirqd/007:25:360
231799986,1cyclictest23530-21snmpd11:22:080
231799986,1cyclictest23530-21snmpd08:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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