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2026-07-15 - 13:52
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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 100 highest latencies:
System rack6slot5.osadl.org (updated Wed Jul 15, 2026 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
72099963643528,2834cyclictest28768-21kworker/0:219:12:060
67882777185,203sleep00-21swapper19:07:080
72099950753,440cyclictest6636-21ssh21:55:050
72099949664,363cyclictest4924-21runrttasks23:18:100
72099949255,437cyclictest0-21swapper20:43:280
72099948936,439cyclictest21992-21ssh23:44:240
72099948835,439cyclictest19138-21ssh22:22:350
72099947752,363cyclictest7297-21ssh00:25:120
72099947137,434cyclictest0-21swapper21:34:230
72099946670,382cyclictest31897-21nscd22:29:170
72099946431,433cyclictest0-21swapper19:58:040
72099945987,358cyclictest12953-21ssh23:22:450
72099945732,425cyclictest0-21swapper23:32:270
72099945370,369cyclictest21218-21sed19:45:310
72099944976,190cyclictest11-21ksoftirqd/023:10:460
72099944954,372cyclictest12-21rcu_preempt22:15:210
72099944954,209cyclictest14794-21sed20:55:330
72099944864,370cyclictest22637-21munin-node22:30:520
72099944864,370cyclictest11-21ksoftirqd/021:22:500
72099944568,363cyclictest13-21rcuc/019:17:170
72099944169,187cyclictest13295-21kworker/u2:200:44:150
7209994411,426cyclictest19758-21diskmemload00:05:190
72099943971,355cyclictest351950irq/10-yenta23:04:420
72099943967,359cyclictest24020-21ssh21:19:410
72099943947,378cyclictest13-21rcuc/021:11:210
72099943852,87cyclictest28485-21ssh23:59:210
72099943844,381cyclictest14280-19blkid22:11:210
72099943667,88cyclictest9766-21ssh00:30:320
72099943574,300cyclictest32524-21ssh21:40:080
72099943547,375cyclictest13-21rcuc/000:01:450
72099943372,303cyclictest19758-21diskmemload22:49:110
72099943371,302cyclictest15353-21ssh23:28:520
72099943367,190cyclictest30665-21munin-node22:50:160
7209994331,372cyclictest32048-21ssh21:38:180
72099943168,304cyclictest2192-21ssh22:59:010
72099943054,204cyclictest23077-21strings23:46:000
72099942954,361cyclictest2838-21munin-node00:16:210
72099942855,360cyclictest4009-21ssh21:48:080
72099942853,362cyclictest2636-21diskmemload00:14:420
72099942154,190cyclictest15198-21munin-node19:30:210
72099941952,87cyclictest5971-21strings00:21:020
72099941857,300cyclictest23742-21kworker/u2:121:29:120
72099941048,362cyclictest0-21swapper19:41:190
72099940846,303cyclictest28073-21ssh22:43:490
72099940755,352cyclictest0-21swapper22:00:090
72099940733,374cyclictest0-21swapper20:46:300
72099940452,339cyclictest8558-21ssh21:59:010
72099940243,298cyclictest13667-21cron00:40:010
72099939853,345cyclictest0-21swapper20:17:350
72099939435,359cyclictest0-21swapper20:36:310
72099939134,357cyclictest0-21swapper20:02:480
72099938754,274cyclictest19824-21ssh23:39:310
72099938735,340cyclictest26300-21ssh23:54:150
72099937433,341cyclictest0-21swapper19:37:330
72099937235,279cyclictest6755-21ssh23:09:250
72099937133,279cyclictest13-21rcuc/020:10:470
7209993701,356cyclictest0-21swapper20:22:100
72099936254,248cyclictest3914-21expr20:25:390
72099935793,251cyclictest13-21rcuc/022:07:260
72099935391,88cyclictest24291-21df22:35:250
72099935370,270cyclictest12172-21memory19:20:370
72099935088,249cyclictest13-21rcuc/020:30:310
72099935014,336cyclictest0-21swapper19:50:100
72099934987,249cyclictest13-21rcuc/020:51:140
72099934667,96cyclictest11-21ksoftirqd/021:05:550
72099934436,308cyclictest0-21swapper19:26:300
72099933474,88cyclictest13-21rcuc/020:05:500
72099933462,260cyclictest4285-21lldpd21:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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