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2026-08-19 - 08:47
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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 Wed Aug 19, 2026 00:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
190839992534619,4623cyclictest32336-21kworker/0:019:20:500
190839990514716,4325cyclictest32336-21kworker/0:019:15:310
190839984124151,4211cyclictest32336-21kworker/0:019:14:030
188272794186,179sleep00-21swapper19:08:310
190839948834,439cyclictest31864-21diskmemload23:08:130
190839948834,439cyclictest31864-21diskmemload21:46:550
190839948833,441cyclictest31864-21diskmemload00:14:490
190839948734,440cyclictest15188-21strings22:55:520
190839948734,439cyclictest31864-21diskmemload22:43:000
190839948734,439cyclictest31864-21diskmemload22:34:590
190839948734,439cyclictest31864-21diskmemload00:38:070
190839948734,439cyclictest25250-21ssh23:19:130
190839948533,439cyclictest8286-21ssh23:52:350
190839948533,439cyclictest25113-21ssh22:05:530
190839948532,439cyclictest23132-21ssh23:14:430
190839948432,439cyclictest7944-21ssh21:27:300
190839948431,439cyclictest31864-21diskmemload21:19:280
190839947833,431cyclictest17854-21seq00:15:140
190839946932,423cyclictest19922-21sed21:55:230
190839946532,373cyclictest15170-21ssh21:44:580
190839944555,329cyclictest17083-21ssh23:00:390
190839943453,367cyclictest31387-21fschecks_count23:31:310
190839943422,353cyclictest4120-21syslogd22:20:010
190839942055,182cyclictest11220-21munin-node00:00:160
190839941955,350cyclictest31864-21diskmemload23:40:180
190839941935,88cyclictest25567-21munin-node23:20:100
190839941856,348cyclictest4905-21runrttasks19:55:430
190839941453,346cyclictest15779-21df_abs20:25:290
190839941429,89cyclictest3947-21cron19:55:010
190839941353,299cyclictest31864-21diskmemload22:35:150
190839941332,367cyclictest23074-19path_id22:01:110
190839941327,88cyclictest27004-21grep22:10:380
190839941256,356cyclictest0-21swapper21:35:220
190839941153,297cyclictest9886-21munin-node22:45:240
190839940874,321cyclictest14849-21runrttasks20:22:280
190839940854,236cyclictest32588-21ssh22:22:270
190839940834,360cyclictest20085-21munin-node00:20:430
190839940832,362cyclictest27450-21runrttasks20:55:560
190839940632,360cyclictest5893-21ssh23:46:490
190839940554,292cyclictest31864-21diskmemload23:36:190
190839940533,359cyclictest2656-21ssh22:28:510
190839940532,359cyclictest10520-21ssh23:57:350
190839940434,357cyclictest381-21ssh21:11:020
190839940354,289cyclictest724-21gzip19:45:290
190839940233,356cyclictest26007-21ssh00:31:520
190839940232,357cyclictest10671-21ssh21:34:560
190839940132,356cyclictest11-21ksoftirqd/000:25:510
190839940015,88cyclictest22923-21munin-node20:45:210
190839939951,165cyclictest28701-21munin-node23:26:000
190839939836,303cyclictest0-21swapper20:51:030
190839939823,361cyclictest0-21swapper21:07:510
190839939749,289cyclictest31864-21diskmemload00:09:240
190839939634,350cyclictest4204-21gpm21:24:560
190839939631,352cyclictest28277-21munin-node21:00:250
190839939553,283cyclictest6915-21python20:00:480
190839939450,283cyclictest18164-21ssh21:50:410
190839939232,347cyclictest27817-21nfs_client19:30:360
190839939134,88cyclictest17738-21munin-node20:30:320
190839938934,341cyclictest13591-21ssh22:52:000
190839938734,340cyclictest8296-21gzip20:05:330
190839938631,355cyclictest0-21swapper19:35:370
190839938534,338cyclictest351950irq/10-yenta19:40:260
190839938532,338cyclictest26187-21munin-node19:25:420
190839938255,314cyclictest4285-21lldpd20:12:400
190839937758,306cyclictest4924-21runrttasks20:40:510
190839937656,306cyclictest11646-21df20:15:200
190839937455,143cyclictest4224-21lldpd20:37:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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