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2026-09-04 - 04:51
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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 792 highest latencies:
System rack6slot5.osadl.org (updated Fri Sep 04, 2026 00:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
136869989924821,4157cyclictest11677-21kworker/0:019:33:040
136869985124419,4083cyclictest11677-21kworker/0:019:20:230
136869978804174,3692cyclictest11677-21kworker/0:019:14:180
136869972213916,3246cyclictest11677-21kworker/0:019:48:330
136869960893312,2773cyclictest11677-21kworker/0:019:26:020
136869959813331,2608cyclictest11677-21kworker/0:019:19:000
136869950602582,2464cyclictest11677-21kworker/0:019:50:280
130952779185,203sleep00-21swapper19:05:450
136869946632,374cyclictest5946-21ssh22:46:270
136869946431,372cyclictest26555-21diskmemload23:43:590
136869945831,366cyclictest2808-21ssh22:40:390
136869945432,369cyclictest10726-21ssh00:10:290
136869945332,360cyclictest14552-21munin-node21:56:200
136869945029,407cyclictest0-21swapper23:03:350
13686994446,424cyclictest2099-21ssh22:39:510
136869941633,383cyclictest21064-21latency_hist20:55:040
136869941334,366cyclictest26555-21diskmemload23:29:570
136869941222,384cyclictest897-21jbd2/sda1-823:55:310
136869940635,358cyclictest27531-21ssh21:10:540
136869940433,88cyclictest182592sleep023:15:250
136869940431,365cyclictest21197-21ntp_states20:55:180
136869940342,348cyclictest4305-21snmpd20:46:010
136869940331,359cyclictest26555-21diskmemload00:15:160
136869940232,370cyclictest1020-21munin-node21:25:160
136869940035,359cyclictest3361-21ssh23:54:250
136869939935,350cyclictest24979-21ssh22:16:510
136869939928,88cyclictest7920-21python22:51:120
136869939922,363cyclictest4305-21snmpd20:44:560
136869939835,349cyclictest4036-21ssh21:30:550
136869939732,351cyclictest29665-21ssh22:27:520
136869939732,351cyclictest20725-21ssh22:07:560
136869939731,352cyclictest27327-21cut19:45:020
136869939636,347cyclictest12243-21ssh21:50:060
136869939632,350cyclictest7010-21python00:01:070
136869939631,351cyclictest14898-21expr23:06:260
136869939534,360cyclictest8291-21ssh00:05:170
136869939532,350cyclictest64242sleep021:35:590
136869939232,346cyclictest29022-21ssh23:39:170
136869939231,348cyclictest13-21rcuc/022:31:050
136869939016,360cyclictest13395-21kworker/u2:223:13:220
136869938633,341cyclictest4924-21runrttasks00:32:310
136869938633,340cyclictest25775-21ssh23:31:050
136869938632,340cyclictest635-21ssh21:24:060
136869938632,340cyclictest26555-21diskmemload00:30:020
136869938532,340cyclictest8437-21ssh21:40:430
136869938523,349cyclictest13-21rcuc/023:22:420
136869938438,346cyclictest0-21swapper21:54:120
136869938118,302cyclictest16814-21munin-node22:00:430
136869938035,345cyclictest0-21swapper22:14:390
136869937524,186cyclictest16862-21rm00:23:590
136869937514,361cyclictest0-21swapper21:19:450
136869937031,278cyclictest22182-21rt-features00:35:370
136869936849,259cyclictest9344-21rm22:55:250
136869936637,269cyclictest25775-21munin-node22:20:580
136869936432,90cyclictest8980-21cat20:20:450
136869936132,269cyclictest4924-21runrttasks21:01:170
136869935734,264cyclictest32680-21munin-node23:46:120
136869935525,270cyclictest4224-21lldpd20:08:080
136869935224,269cyclictest25954-21munin-node21:05:570
136869934735,80cyclictest13298-21runrttasks20:32:560
136869933576,201cyclictest11-21ksoftirqd/020:39:520
136869932755,258cyclictest6221-21munin-node20:15:120
136869932654,259cyclictest9955-21munin-node20:25:430
136869932542,269cyclictest31218-21sed19:55:190
136869932449,261cyclictest4285-21lldpd20:13:090
136869932248,261cyclictest523-21munin-node20:00:480
13686993177,19cyclictest0-21swapper19:38:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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