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2026-07-04 - 03:05
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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 Sat Jul 04, 2026 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2852399100295356,4663cyclictest18985-21kworker/0:019:15:360
285239990234775,4245cyclictest18985-21kworker/0:019:12:230
266742776185,203sleep00-21swapper19:05:100
285239959636,547cyclictest8902-21diskmemload23:29:400
285239952177,188cyclictest556-21ssh22:01:280
285239950873,249cyclictest5746-21ssh22:13:060
285239950062,253cyclictest25668-21hddtemp_smartct20:25:540
285239948632,439cyclictest17347-21ssh22:39:140
285239945267,362cyclictest27447-21sed21:50:250
28523994487,247cyclictest14790-21perl21:21:230
285239944573,358cyclictest0-21swapper21:01:060
285239944468,87cyclictest12816-21apt-get21:17:140
285239944467,364cyclictest0-21swapper21:58:010
285239944180,347cyclictest30080-21kworker/u2:323:20:410
285239943961,213cyclictest0-21swapper21:13:050
285239943651,201cyclictest0-21swapper19:57:020
285239943465,87cyclictest9464-21ssh22:21:010
285239943465,203cyclictest0-21swapper21:37:150
285239943463,188cyclictest0-21swapper23:33:300
285239943456,365cyclictest0-21swapper00:29:170
285239943362,195cyclictest0-21swapper20:52:070
285239943262,356cyclictest30507-21ssh23:06:490
285239942848,366cyclictest0-21swapper23:14:010
28523994261,249cyclictest16510-21ssh23:47:300
285239942366,176cyclictest11-21ksoftirqd/022:43:160
285239942249,359cyclictest0-21swapper20:33:300
285239942151,357cyclictest0-21swapper23:18:410
285239942051,356cyclictest0-21swapper00:39:140
285239941666,337cyclictest344450irq/10-eth020:35:330
285239941460,295cyclictest0-21swapper00:31:520
285239941453,302cyclictest0-21swapper19:21:510
285239941362,346cyclictest3032-21strings19:25:400
285239941332,381cyclictest25318-21ntp_offset21:45:300
285239941252,360cyclictest0-21swapper00:02:570
285239941151,308cyclictest0-21swapper21:05:560
285239941127,89cyclictest4305-21snmpd00:14:020
285239941038,359cyclictest17907-21ssh21:29:360
285239940947,349cyclictest0-21swapper19:52:510
285239940933,362cyclictest13369-21nfs_client23:40:480
285239940856,339cyclictest11983-21ssh23:37:370
285239940756,292cyclictest0-21swapper22:07:180
285239940657,290cyclictest344450irq/10-eth021:34:140
285239940157,331cyclictest14666-21ssh22:32:220
285239939936,350cyclictest4924-21runrttasks20:01:590
285239939932,88cyclictest30033-21kworker/u2:100:17:090
285239939838,360cyclictest0-21swapper00:24:210
285239939533,362cyclictest0-21swapper19:47:150
285239939432,350cyclictest25038-19blkid00:06:140
285239939333,347cyclictest22248-21kworker/0:120:42:380
285239939332,361cyclictest21631-21ssh22:47:560
285239939331,351cyclictest6601-21awk19:35:290
285239939222,370cyclictest0-21swapper20:19:110
285239939038,338cyclictest28310-21ssh23:02:120
285239938938,337cyclictest86650irq/10-i91522:27:240
285239938936,340cyclictest4924-21runrttasks20:14:310
285239938915,360cyclictest8902-21diskmemload22:18:190
285239938834,340cyclictest17318-21seq20:05:160
285239938714,361cyclictest22215-21munin-node22:50:130
285239938535,280cyclictest4924-21runrttasks19:32:410
285239938531,354cyclictest0-21swapper22:57:260
285239938525,348cyclictest351950irq/10-yenta19:43:580
285239938433,347cyclictest22248-21kworker/0:120:55:570
285239938335,288cyclictest12-21rcu_preempt21:40:320
28523993829,359cyclictest0-21swapper23:58:190
285239937234,153cyclictest4924-21runrttasks20:48:090
28523993637,356cyclictest0-21swapper20:20:250
285239936290,259cyclictest4285-21lldpd23:51:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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