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2026-06-18 - 19:41
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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 376 highest latencies:
System rack6slot5.osadl.org (updated Thu Jun 18, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
193719996265028,4587cyclictest9229-21kworker/0:207:15:370
193719990634772,4288cyclictest9229-21kworker/0:207:12:230
190762807183,203sleep00-21swapper07:08:110
193719954852,318cyclictest32024-21diskmemload11:10:330
193719952929,439cyclictest823-21ssh10:26:500
193719952831,481cyclictest24860-21ssh10:07:150
1937199525100,80cyclictest11-21ksoftirqd/009:35:270
193719952230,421cyclictest32024-21diskmemload12:37:230
193719952227,434cyclictest13520-21sed12:15:060
193719952129,430cyclictest7542-21cat09:26:460
193719952027,422cyclictest9997-21ssh09:33:010
193719951553,447cyclictest32024-21diskmemload09:55:370
193719951254,395cyclictest32024-21diskmemload11:40:120
193719950954,394cyclictest17191-21ssh12:22:260
193719950855,439cyclictest3819-21ssh09:19:340
193719950854,393cyclictest32024-21diskmemload09:52:320
193719950755,438cyclictest21455-21ssh12:32:150
193719950755,437cyclictest6852-21ssh11:59:150
193719950753,393cyclictest9890-21ssh10:48:210
193719950654,439cyclictest16468-21ssh09:48:140
193719950653,439cyclictest7984-21strings12:01:050
193719950554,437cyclictest5324-21ssh10:36:540
193719950553,270cyclictest17150-21ssh11:05:390
193719950155,385cyclictest3292-21ssh10:33:090
193719950154,378cyclictest32024-21diskmemload11:51:120
193719950129,400cyclictest10042-21cut08:10:120
193719950054,385cyclictest18168-21strings08:30:430
193719950028,402cyclictest4272-21snmpd07:25:550
193719949653,429cyclictest24050-21ssh11:21:140
193719949554,380cyclictest7739-21ssh10:43:150
193719949055,421cyclictest14804-21ssh12:16:420
193719948853,260cyclictest4894-21runrttasks11:01:280
193719948755,371cyclictest0-21swapper08:16:200
193719948356,413cyclictest32024-21diskmemload12:06:370
193719948256,365cyclictest32024-21diskmemload10:16:360
193719948255,356cyclictest22508-21ssh10:01:440
193719948254,360cyclictest32024-21diskmemload11:17:100
193719948055,411cyclictest30633-21strings10:21:070
193719947955,364cyclictest32024-21diskmemload12:45:020
193719947554,360cyclictest32024-21diskmemload09:12:210
193719947055,354cyclictest30025-21strings07:35:510
193719946974,381cyclictest10332-21munin-node10:51:100
193719946555,350cyclictest14623-21ssh09:44:450
193719946455,235cyclictest32024-21diskmemload10:55:230
193719946330,418cyclictest4491-21df_inode09:20:420
193719946264,375cyclictest26961-21sort08:55:270
193719946169,378cyclictest13-21rcuc/007:55:560
193719946153,338cyclictest4894-21runrttasks11:46:230
193719945670,371cyclictest12-21rcu_preempt12:27:090
193719945633,361cyclictest20284-21df08:36:020
193719945575,366cyclictest4253-21lldpd11:35:540
193719945256,326cyclictest29240-21strings09:00:450
193719944653,379cyclictest31081-21strings09:05:440
193719944556,374cyclictest4894-21runrttasks07:41:110
193719944368,361cyclictest11-21ksoftirqd/007:46:050
193719944366,88cyclictest11-21ksoftirqd/011:25:270
193719944028,398cyclictest26973-21ssh10:12:080
193719943733,388cyclictest2519-21munin-node07:50:560
193719943633,342cyclictest28417-21chrt07:31:030
193719942470,354cyclictest0-21swapper08:52:160
193719941954,351cyclictest28911-21ssh11:32:110
193719940852,341cyclictest6664-21ntp_offset08:00:250
193719940552,338cyclictest8267-21sort08:05:160
193719939338,355cyclictest0-21swapper08:29:180
193719939035,355cyclictest0-21swapper08:48:390
193719938930,343cyclictest4894-21runrttasks07:21:580
193719938852,320cyclictest21133-21sendmail_mailst08:40:130
193719937031,316cyclictest13905-21cut08:20:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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