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2026-07-31 - 16:26
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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 highest latencies:
System rack6slot5.osadl.org (updated Fri Jul 31, 2026 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
305139968423686,3152cyclictest18787-21kworker/0:107:15:320
305139956963210,2483cyclictest18787-21kworker/0:107:12:230
300812780185,202sleep00-21swapper07:07:050
305139951482,372cyclictest11-21ksoftirqd/011:23:040
305139947632,252cyclictest3050-21missed_timers11:16:130
305139945714,88cyclictest29424-21wc08:30:350
305139945485,356cyclictest0-21swapper12:33:130
305139945263,87cyclictest4305-21snmpd09:52:350
305139945121,189cyclictest4305-21snmpd09:32:210
305139944765,368cyclictest11-21ksoftirqd/011:46:530
305139943768,87cyclictest9719-21ssh10:19:060
305139943766,186cyclictest27044-21ssh10:57:040
305139943665,358cyclictest0-21swapper08:55:120
30513994304,367cyclictest31983-21ssh11:09:310
305139942965,350cyclictest0-21swapper12:00:010
305139942866,177cyclictest5112-21ssh10:08:120
305139942565,178cyclictest26344-21ssh09:43:080
305139942063,305cyclictest0-21swapper08:11:400
305139941634,358cyclictest21618-21munin-node10:45:360
305139941331,368cyclictest13801-21ssh10:27:170
305139940716,366cyclictest14438-21nfs_client07:50:380
305139940615,377cyclictest27144-21memory12:10:450
305139940534,359cyclictest4305-21snmpd11:13:450
305139940532,360cyclictest12459-21rm11:37:090
305139940334,369cyclictest11206-21diskmemload10:35:240
305139940124,197cyclictest21228-21latency_hist08:10:010
305139940114,374cyclictest11761-21ssh10:23:100
305139940029,358cyclictest11206-21diskmemload12:06:120
305139939934,365cyclictest11206-21diskmemload12:18:320
305139939926,359cyclictest0-21swapper09:56:380
305139939826,358cyclictest7239-21ssh12:39:520
305139939825,196cyclictest2039-21kworker/u2:010:12:590
305139939632,350cyclictest6565-21ssh11:25:140
305139939632,350cyclictest4817-21python08:50:480
305139939631,351cyclictest20913-21ssh10:44:350
305139939627,356cyclictest28548-21ssh09:48:040
305139939618,365cyclictest10900-21netstat07:40:460
305139939535,347cyclictest351950irq/10-yenta12:02:540
305139939533,362cyclictest23196-21munin-node08:15:120
305139939331,349cyclictest24490-21fschecks_time10:51:180
3051399393130,79cyclictest1462-21ssh10:00:350
305139939034,342cyclictest29450-21ssh11:02:590
305139938922,353cyclictest11206-21diskmemload09:13:020
305139938833,355cyclictest0-21swapper12:22:290
305139938733,341cyclictest11206-21diskmemload09:21:430
305139938725,362cyclictest0-21swapper09:37:530
305139938725,348cyclictest19160-21ssh09:26:190
305139938532,340cyclictest11206-21diskmemload11:41:140
305139938432,338cyclictest11206-21diskmemload10:32:230
305139938340,328cyclictest4924-21runrttasks07:28:530
305139938235,347cyclictest0-21swapper11:32:300
305139938034,346cyclictest0-21swapper08:37:410
305139937918,87cyclictest18787-21kworker/0:107:20:230
305139937542,272cyclictest11952-21ntpq07:45:160
305139937389,261cyclictest2018-21grep12:26:340
305139937329,283cyclictest11-21ksoftirqd/007:55:490
30513993711,370cyclictest0-21swapper08:21:200
305139936832,277cyclictest84702sleep009:00:450
305139936435,315cyclictest13867-21sed09:15:290
305139936289,260cyclictest4285-21lldpd08:41:470
305139936288,261cyclictest4285-21lldpd11:50:550
3051399361108,239cyclictest94822chrt07:36:440
305139935634,89cyclictest9776-21head09:05:240
305139935122,269cyclictest19377-21latency_hist08:05:030
305139934581,250cyclictest6823-21grep07:30:320
305139933968,213cyclictest0-21swapper08:26:320
305139933968,212cyclictest0-21swapper08:46:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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