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2026-08-10 - 09:18
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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 Mon Aug 10, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304029989384511,4377cyclictest13797-21kworker/0:019:14:100
304029987264532,4184cyclictest13797-21kworker/0:019:15:580
304029968153651,3150cyclictest13797-21kworker/0:019:38:220
304029966333472,3148cyclictest13797-21kworker/0:019:40:240
304029965663554,3008cyclictest13797-21kworker/0:019:26:290
304029950382589,2445cyclictest13797-21kworker/0:019:20:060
300322749185,203sleep00-21swapper19:07:340
304029948734,453cyclictest0-21swapper20:52:200
304029946732,433cyclictest9315-21mailstats23:30:140
304029946532,420cyclictest17384-21munin-node20:00:510
304029946034,252cyclictest3409-21ssh00:28:590
304029945933,371cyclictest29955-21ssh23:03:350
304029945926,250cyclictest10949-21diskmemload23:13:010
304029945832,363cyclictest31513-21runrttasks00:19:450
304029944636,349cyclictest0-21swapper23:46:500
304029944535,350cyclictest13-21rcuc/000:11:100
304029943436,398cyclictest0-21swapper22:59:150
304029942148,188cyclictest26780-21sh00:08:310
304029942141,367cyclictest30629-21kworker/u2:221:57:140
304029941335,378cyclictest5128-21ssh22:07:570
304029941316,397cyclictest29937-21runrttasks20:32:220
304029941238,361cyclictest21415-21ssh22:45:100
304029940918,87cyclictest4924-21runrttasks21:48:140
304029940831,191cyclictest0-21swapper22:02:010
304029940728,88cyclictest16525-19scsi_id19:55:550
304029940629,365cyclictest24275-21ssh00:02:120
304029940440,351cyclictest10949-21diskmemload22:26:170
304029940433,358cyclictest4285-21lldpd23:09:570
304029940332,371cyclictest0-21swapper23:18:140
304029940250,300cyclictest12-21rcu_preempt23:41:090
304029940118,214cyclictest5896-21ssh00:34:360
304029939835,363cyclictest0-21swapper22:35:150
304029939832,353cyclictest344450irq/10-eth020:35:480
304029939832,351cyclictest19322-21grep23:51:110
304029939734,359cyclictest4924-21runrttasks23:20:520
304029939633,340cyclictest24316-21apt-get20:17:110
304029939532,348cyclictest14811-21apt-get21:17:010
304029939531,350cyclictest22307-21fschecks_count20:11:050
304029939431,363cyclictest0-21swapper21:05:130
304029939424,357cyclictest32116-21kworker/u2:322:12:400
304029939332,346cyclictest4224-21lldpd20:27:560
304029939229,349cyclictest21433-21ssh21:31:360
304029939214,365cyclictest10949-21diskmemload21:25:190
304029939122,87cyclictest4924-21runrttasks21:52:520
304029939118,360cyclictest20746-21kworker/u2:121:35:270
304029939116,361cyclictest24823-21ssh22:51:210
304029938942,285cyclictest10262-21ssh22:20:180
304029938935,340cyclictest12561-21strings19:45:400
304029938834,340cyclictest16395-21ssh22:33:030
304029938756,270cyclictest26150-21ssh21:42:380
304029938732,342cyclictest4305-21snmpd19:53:050
304029938732,340cyclictest1873-21kworker/u2:100:23:200
304029938655,270cyclictest32423-21munin-node19:30:240
304029938431,353cyclictest0-21swapper23:38:100
304029938354,91cyclictest19998-21needreboot22:40:510
304029938041,279cyclictest8821-21ssh23:28:270
304029938032,279cyclictest5872sleep020:40:430
304029937848,270cyclictest9087-21cron21:05:010
304029937050,261cyclictest24962-21sed20:20:190
304029936139,262cyclictest6174-21grep20:55:380
304029936132,269cyclictest16089-21df_abs21:20:380
304029936031,90cyclictest4944-19udevd23:56:090
304029935929,269cyclictest10172-21sort22:20:060
304029935532,89cyclictest11379-21chrt21:10:320
304029934030,310cyclictest0-21swapper00:38:070
304029933747,276cyclictest3433-21date20:50:020
304029932452,258cyclictest19535-21head20:05:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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