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2026-03-21 - 14:19
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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 Sat Mar 21, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
265192230163,22sleep30-21swapper/319:09:313
263322226159,23sleep00-21swapper/019:07:030
262862204170,23sleep10-21swapper/119:06:281
263392201168,21sleep20-21swapper/219:07:092
26850996837,3cyclictest9-21ksoftirqd/022:30:170
26850996837,3cyclictest9-21ksoftirqd/022:30:170
26850996132,7cyclictest9-21ksoftirqd/022:00:000
26850996027,5cyclictest9-21ksoftirqd/020:50:170
26850996027,5cyclictest9-21ksoftirqd/020:50:170
26850995828,3cyclictest9-21ksoftirqd/020:30:130
26850995728,3cyclictest9-21ksoftirqd/021:20:260
26850995625,7cyclictest9-21ksoftirqd/023:20:190
26850995623,9cyclictest9-21ksoftirqd/022:15:010
26850995622,10cyclictest9-21ksoftirqd/021:40:120
26850995528,6cyclictest9-21ksoftirqd/023:45:160
26850995528,4cyclictest9-21ksoftirqd/020:05:280
26850995527,7cyclictest9-21ksoftirqd/023:30:160
26850995526,7cyclictest9-21ksoftirqd/019:45:000
26850995522,5cyclictest9-21ksoftirqd/019:59:590
167692550,2sleep00-21swapper/000:15:000
26853995322,8cyclictest41-21ksoftirqd/321:40:013
26850995327,3cyclictest9-21ksoftirqd/019:35:260
26850995326,7cyclictest9-21ksoftirqd/021:45:120
26850995326,7cyclictest9-21ksoftirqd/000:07:360
26850995325,7cyclictest9-21ksoftirqd/000:35:120
26850995324,4cyclictest9-21ksoftirqd/019:20:130
26850995323,6cyclictest9-21ksoftirqd/020:30:010
26850995323,4cyclictest9-21ksoftirqd/020:15:150
26850995322,4cyclictest9-21ksoftirqd/022:25:270
26850995312,6cyclictest9-21ksoftirqd/000:20:160
138491530,1ptp4l391rcuc/322:29:513
26850995226,6cyclictest9-21ksoftirqd/023:40:190
26850995222,3cyclictest9-21ksoftirqd/022:45:000
26850995221,3cyclictest9-21ksoftirqd/023:10:200
26850995220,5cyclictest9-21ksoftirqd/020:15:000
26850995219,3cyclictest9-21ksoftirqd/019:30:230
26850995216,6cyclictest9-21ksoftirqd/023:55:160
26850995215,6cyclictest9-21ksoftirqd/021:30:120
26850995215,5cyclictest9-21ksoftirqd/022:35:120
26850995136,3cyclictest9-21ksoftirqd/021:35:170
26850995126,7cyclictest9-21ksoftirqd/021:05:250
26850995125,7cyclictest9-21ksoftirqd/020:35:160
26850995125,3cyclictest9-21ksoftirqd/019:25:250
26850995122,4cyclictest9-21ksoftirqd/022:50:190
26850995121,6cyclictest9-21ksoftirqd/022:20:260
26850995121,3cyclictest9-21ksoftirqd/022:45:130
26850995118,4cyclictest9-21ksoftirqd/023:05:120
26850995118,4cyclictest9-21ksoftirqd/023:00:130
26850995117,4cyclictest9-21ksoftirqd/022:15:170
26850995117,3cyclictest9-21ksoftirqd/000:00:220
26850995115,6cyclictest9-21ksoftirqd/022:00:140
26850995115,6cyclictest9-21ksoftirqd/022:00:130
26850995114,6cyclictest9-21ksoftirqd/019:45:010
26850995113,6cyclictest9-21ksoftirqd/021:50:190
26850995113,6cyclictest9-21ksoftirqd/019:50:170
26850995025,7cyclictest9-21ksoftirqd/021:25:230
26850995020,7cyclictest9-21ksoftirqd/000:25:130
26850995020,7cyclictest9-21ksoftirqd/000:25:130
26850995014,5cyclictest9-21ksoftirqd/000:15:150
26850994916,4cyclictest9-21ksoftirqd/021:15:240
26850994916,4cyclictest9-21ksoftirqd/021:00:180
26850994916,3cyclictest9-21ksoftirqd/021:10:220
26850994913,5cyclictest9-21ksoftirqd/000:30:260
26850994912,5cyclictest9-21ksoftirqd/020:55:190
2685399487,5cyclictest41-21ksoftirqd/300:25:133
2685399487,5cyclictest41-21ksoftirqd/300:25:133
26853994840,5cyclictest29406-21cron21:25:003
26853994821,7cyclictest41-21ksoftirqd/320:21:553
26850994819,6cyclictest9-21ksoftirqd/020:40:140
26850994816,7cyclictest9-21ksoftirqd/019:10:120
26850994813,6cyclictest9-21ksoftirqd/023:50:180
26850994813,11cyclictest9-21ksoftirqd/022:10:000
26850994812,6cyclictest9-21ksoftirqd/019:15:130
26850994812,5cyclictest9-21ksoftirqd/022:55:270
26850994812,5cyclictest9-21ksoftirqd/020:00:150
66592470,5sleep16656-21awk22:50:011
26853994717,4cyclictest41-21ksoftirqd/321:50:003
26850994718,6cyclictest9-21ksoftirqd/023:15:190
26850994710,6cyclictest9-21ksoftirqd/023:35:170
26850994622,6cyclictest9-21ksoftirqd/023:25:230
26850994614,5cyclictest9-21ksoftirqd/020:45:120
2685399456,5cyclictest41-21ksoftirqd/322:20:363
2685399456,4cyclictest41-21ksoftirqd/319:50:263
26850994520,6cyclictest9-21ksoftirqd/020:20:190
138491450,0ptp4l401ktimersoftd/320:46:323
2685399435,5cyclictest41-21ksoftirqd/323:40:233
26853994326,7cyclictest41-21ksoftirqd/319:35:173
26853994316,8cyclictest41-21ksoftirqd/322:10:213
138491430,0ptp4l401ktimersoftd/322:34:403
138491430,0ptp4l401ktimersoftd/322:34:403
138491430,0ptp4l401ktimersoftd/319:40:573
2685399426,11cyclictest31801-21/usr/sbin/munin22:35:163
26853994213,6cyclictest41-21ksoftirqd/300:06:523
138491420,0ptp4l401ktimersoftd/322:44:423
26853994121,6cyclictest41-21ksoftirqd/323:46:573
138491410,0ptp4l401ktimersoftd/319:29:503
26853994010,7cyclictest41-21ksoftirqd/300:10:173
2685399397,5cyclictest41-21ksoftirqd/323:00:003
2685399392,5cyclictest41-21ksoftirqd/321:17:513
2685299391,37cyclictest62150irq/144-enp4s0-19:40:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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