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2026-06-19 - 10:58
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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 all highest latencies:
System rack6slot5.osadl.org (updated Fri Jun 19, 2026 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
103109989984576,4399cyclictest31952-21kworker/0:219:17:030
103109952692788,2429cyclictest31952-21kworker/0:219:15:030
96912779186,204sleep00-21swapper19:05:300
10310995023,315cyclictest22996-21diskmemload21:33:480
103109949645,437cyclictest9981-21ssh00:18:440
103109949431,448cyclictest324-21chrt23:56:250
103109948835,439cyclictest22996-21diskmemload23:29:470
103109948734,439cyclictest22042-21strings21:05:420
103109948733,440cyclictest24618-21ssh23:38:500
103109948634,438cyclictest10239-21ssh21:53:010
103109948633,439cyclictest21823-21ssh22:20:080
103109948332,438cyclictest19108-21ssh22:13:060
10310994771,414cyclictest5639-21ssh00:09:010
103109946735,362cyclictest22996-21diskmemload23:14:470
103109946634,372cyclictest2341-21cpuspeed00:01:040
103109946532,363cyclictest31656-21wc22:41:060
103109946332,370cyclictest12-21rcu_preempt21:12:170
103109945231,360cyclictest22996-21diskmemload23:01:450
103109943635,385cyclictest22996-21diskmemload23:43:330
103109942734,380cyclictest0-21swapper19:36:360
103109942652,359cyclictest22996-21diskmemload23:22:420
103109942434,330cyclictest22996-21diskmemload22:02:180
103109942034,362cyclictest30137-21munin-node21:25:320
103109941850,307cyclictest22996-21diskmemload21:15:530
103109941636,357cyclictest13854-21munin-node20:45:310
103109941438,362cyclictest22494-21ssh23:34:180
103109941152,344cyclictest22996-21diskmemload00:20:200
103109941051,345cyclictest22996-21diskmemload22:16:400
103109940953,296cyclictest28395-21latency_hist22:35:030
103109940854,339cyclictest4894-21runrttasks00:10:300
103109940849,344cyclictest22996-21diskmemload23:50:440
103109940655,289cyclictest22996-21diskmemload23:45:170
103109940654,291cyclictest22996-21diskmemload21:35:450
103109940632,361cyclictest29450-21ssh21:24:040
103109940554,337cyclictest22996-19diskmemload22:46:180
103109940530,361cyclictest30234-21ssh22:38:270
103109940453,291cyclictest22996-21diskmemload22:26:510
103109940435,355cyclictest31952-21kworker/0:220:08:000
103109940425,87cyclictest18564-21ssh00:37:200
103109940351,292cyclictest22996-21diskmemload21:41:270
103109940134,258cyclictest9752-21kworker/u2:300:32:150
103109940133,354cyclictest14496-21ssh00:29:040
103109940040,347cyclictest31952-21kworker/0:219:46:140
103109939953,163cyclictest19067-21expr19:30:370
103109939949,337cyclictest22996-21diskmemload22:05:140
103109939878,296cyclictest12-21rcu_preempt22:51:000
103109939754,168cyclictest26047-21grep19:50:210
103109939734,304cyclictest0-21swapper19:58:250
103109939652,172cyclictest22996-21diskmemload21:56:010
103109939567,314cyclictest6829-21sshd22:58:380
103109939455,279cyclictest22996-21diskmemload23:07:420
103109939231,361cyclictest0-21swapper20:42:590
103109939134,342cyclictest4055-21apt-get20:17:140
103109939131,360cyclictest0-21swapper21:02:550
103109939032,87cyclictest15418-21kworker/u2:023:17:240
103109939019,355cyclictest18228-21latency_hist19:30:000
103109938934,341cyclictest5346-21strings20:20:400
103109938834,340cyclictest1496-21strings20:10:400
103109938733,340cyclictest7808-21ssh21:46:570
103109938532,339cyclictest15792-21cstates19:20:580
103109938462,309cyclictest4253-21lldpd20:03:410
103109938431,338cyclictest10204-21munin-node20:35:150
103109938332,279cyclictest6523-21ntp_states20:25:170
103109938031,325cyclictest15703-21munin-node20:50:350
103109937252,305cyclictest8497-21swap20:30:200
103109936533,271cyclictest18648-21fschecks_time20:55:570
103109935334,305cyclictest22993-21python19:40:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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