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2026-08-25 - 04:42
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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 rackdslot4.osadl.org (updated Tue Aug 25, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1149922840,3sleep0101ktimersoftd/019:05:180
128912202167,23sleep30-21swapper/319:07:053
127732201168,22sleep10-21swapper/119:05:351
129282200167,22sleep20-21swapper/219:07:302
2366521800,6sleep11341499cyclictest21:40:001
956221730,3sleep01341399cyclictest22:15:170
1517121500,6sleep31341699cyclictest19:10:263
13415996024,4cyclictest33-21ksoftirqd/219:30:142
1341499601,27cyclictest16395-21apt-key23:35:121
13415995728,8cyclictest33-21ksoftirqd/220:15:002
13415995628,7cyclictest33-21ksoftirqd/221:59:592
138491550,1ptp4l401ktimersoftd/300:05:483
13415995524,5cyclictest33-21ksoftirqd/223:00:142
13415995522,7cyclictest33-21ksoftirqd/200:25:002
138491540,1ptp4l401ktimersoftd/323:57:163
1341599525,44cyclictest21915-21irqrtprio19:25:232
13415995237,7cyclictest33-21ksoftirqd/219:40:022
13415995221,8cyclictest33-21ksoftirqd/223:10:002
13413995245,4cyclictest28713-21sh21:50:000
13415995125,3cyclictest33-21ksoftirqd/219:40:142
13415995122,4cyclictest33-21ksoftirqd/221:00:132
1341399518,6cyclictest18757-21cpuspeed_turbos19:20:130
50798500,2rtkit-daemon0-21swapper/321:00:273
13415995024,7cyclictest33-21ksoftirqd/200:30:172
13415995023,4cyclictest33-21ksoftirqd/219:55:252
13415995021,7cyclictest33-21ksoftirqd/221:35:012
13415995016,4cyclictest33-21ksoftirqd/222:50:262
13415995016,4cyclictest33-21ksoftirqd/222:50:262
1341499500,1cyclictest0-21swapper/121:25:171
13415994939,3cyclictest33-21ksoftirqd/223:20:002
13415994937,2cyclictest33-21ksoftirqd/200:20:002
13415994921,7cyclictest33-21ksoftirqd/200:05:012
13415994920,7cyclictest33-21ksoftirqd/223:40:012
13415994919,4cyclictest33-21ksoftirqd/221:11:362
13415994917,6cyclictest33-21ksoftirqd/220:35:102
13415994916,4cyclictest33-21ksoftirqd/220:35:012
13415994915,4cyclictest33-21ksoftirqd/200:10:012
13415994914,4cyclictest33-21ksoftirqd/222:55:132
13415994914,4cyclictest33-21ksoftirqd/200:30:002
13415994821,7cyclictest33-21ksoftirqd/221:45:262
13415994821,7cyclictest33-21ksoftirqd/221:20:192
13415994821,7cyclictest33-21ksoftirqd/221:20:192
13415994820,7cyclictest33-21ksoftirqd/220:50:142
13415994820,4cyclictest33-21ksoftirqd/222:37:192
13415994817,4cyclictest33-21ksoftirqd/223:25:192
13415994817,28cyclictest0-21swapper/221:50:232
13415994817,28cyclictest0-21swapper/221:50:232
13415994816,6cyclictest33-21ksoftirqd/220:45:142
13415994815,6cyclictest33-21ksoftirqd/221:45:002
13415994815,4cyclictest33-21ksoftirqd/220:20:262
13415994813,8cyclictest33-21ksoftirqd/219:25:002
13415994813,4cyclictest33-21ksoftirqd/219:10:182
13415994734,6cyclictest33-21ksoftirqd/222:40:242
13415994730,4cyclictest33-21ksoftirqd/222:15:192
13415994720,6cyclictest33-21ksoftirqd/223:45:002
13415994719,3cyclictest33-21ksoftirqd/221:09:482
13415994718,3cyclictest33-21ksoftirqd/222:10:162
13415994712,6cyclictest33-21ksoftirqd/223:55:092
13415994619,4cyclictest33-21ksoftirqd/220:27:012
13415994617,4cyclictest33-21ksoftirqd/220:40:132
13415994617,3cyclictest33-21ksoftirqd/219:45:292
13415994617,3cyclictest33-21ksoftirqd/200:10:152
13415994612,5cyclictest33-21ksoftirqd/200:35:012
13415994612,3cyclictest33-21ksoftirqd/220:05:212
138491450,1ptp4l401ktimersoftd/321:28:443
1341599459,5cyclictest33-21ksoftirqd/222:00:122
13415994522,7cyclictest33-21ksoftirqd/221:25:132
13415994519,7cyclictest33-21ksoftirqd/223:32:162
13415994518,4cyclictest33-21ksoftirqd/222:48:152
13415994518,4cyclictest33-21ksoftirqd/222:22:432
13415994518,4cyclictest33-21ksoftirqd/222:22:422
13415994515,4cyclictest33-21ksoftirqd/222:31:552
13415994438,3cyclictest33-21ksoftirqd/221:39:592
13415994435,2cyclictest33-21ksoftirqd/223:55:002
1341599433,3cyclictest33-21ksoftirqd/223:20:182
1341599433,3cyclictest33-21ksoftirqd/223:20:182
1341399431,39cyclictest15979-21cron21:25:000
1341399431,39cyclictest15979-21cron21:25:000
1341599422,6cyclictest223-21systemd-journal22:05:082
13415994214,7cyclictest33-21ksoftirqd/219:50:132
138491410,0ptp4l401ktimersoftd/321:08:093
13415994130,3cyclictest33-21ksoftirqd/220:00:202
13415994124,4cyclictest33-21ksoftirqd/220:55:262
13415994117,6cyclictest33-21ksoftirqd/223:48:172
13415994111,6cyclictest33-21ksoftirqd/223:10:202
138491400,1ptp4l401ktimersoftd/322:28:413
138491400,0ptp4l401ktimersoftd/320:25:303
13416994035,3cyclictest41-21ksoftirqd/319:40:013
13415994034,3cyclictest33-21ksoftirqd/221:20:002
1341399406,4cyclictest9-21ksoftirqd/022:55:250
13416993934,3cyclictest41-21ksoftirqd/323:54:593
13416993934,3cyclictest41-21ksoftirqd/320:09:593
13416993934,3cyclictest41-21ksoftirqd/319:20:003
13415993912,7cyclictest33-21ksoftirqd/222:25:192
13415993911,9cyclictest33-21ksoftirqd/220:15:012
1341499391,20cyclictest27594-21ptp4l22:50:231
1341499391,20cyclictest27594-21ptp4l22:50:221
1341499390,37cyclictest0-21swapper/121:51:231
1341499390,37cyclictest0-21swapper/121:51:221
13416993833,3cyclictest41-21ksoftirqd/323:24:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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