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2025-12-11 - 07:57
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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 50 highest latencies:
System rack1slot1.osadl.org (updated Thu Dec 11, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
251032215153,48sleep20-21swapper/219:05:002
253242212149,22sleep00-21swapper/019:05:030
273932201162,26sleep10-21swapper/119:09:231
270982201143,46sleep30-21swapper/319:05:353
93252610,0sleep00-21swapper/023:10:000
231102600,0sleep10-21swapper/100:14:291
202882580,0sleep00-21swapper/022:39:400
227182570,0sleep30-21swapper/322:40:263
27513991817,1cyclictest9-21ksoftirqd/021:47:490
2751399150,14cyclictest0-21swapper/021:50:210
2751399130,13cyclictest0-21swapper/021:55:160
27522991211,1cyclictest28-21ksoftirqd/222:20:002
2752299120,12cyclictest20445-21diskmemload23:02:212
27513991211,1cyclictest9-21ksoftirqd/021:45:010
27513991210,1cyclictest9-21ksoftirqd/023:49:590
27513991210,1cyclictest9-21ksoftirqd/022:10:000
27522991110,1cyclictest28-21ksoftirqd/200:00:002
2752299110,10cyclictest0-21swapper/222:35:152
2751499110,10cyclictest0-21swapper/122:25:141
2751399119,1cyclictest9-21ksoftirqd/022:15:130
2751399119,1cyclictest9-21ksoftirqd/000:10:070
2751399110,6cyclictest16554-21apt-get00:05:150
2751399110,10cyclictest0-21swapper/022:25:150
2752299109,1cyclictest28-21ksoftirqd/220:10:012
2752299105,4cyclictest28-21ksoftirqd/221:30:002
27522991010,0cyclictest0-21swapper/223:28:262
2752299100,5cyclictest0-21swapper/221:40:022
2751399109,1cyclictest9-21ksoftirqd/023:50:140
2751399109,1cyclictest9-21ksoftirqd/020:55:010
2751399109,1cyclictest9-21ksoftirqd/020:49:590
2751399108,1cyclictest9-21ksoftirqd/023:40:150
2751399108,1cyclictest9-21ksoftirqd/021:20:000
2751399106,3cyclictest9-21ksoftirqd/022:40:110
2751399104,5cyclictest961-21ssh21:25:220
2751399102,4cyclictest7806-21perf19:34:590
27513991010,0cyclictest9-21ksoftirqd/000:20:000
2751399101,4cyclictest31676-21latency_hist21:25:000
275239998,1cyclictest35-21ksoftirqd/320:40:003
275239996,2cyclictest17169-21/usr/sbin/munin22:35:183
275239993,2cyclictest0-21swapper/322:25:203
275239990,4cyclictest0-21swapper/320:15:013
275229998,1cyclictest28-21ksoftirqd/223:05:152
275229998,1cyclictest28-21ksoftirqd/200:00:192
275229995,3cyclictest28-21ksoftirqd/220:20:012
275229990,6cyclictest254-21systemd-journal23:25:002
275229990,6cyclictest0-21swapper/200:14:252
275139998,1cyclictest9-21ksoftirqd/000:20:230
275139997,1cyclictest9-21ksoftirqd/023:15:140
275139997,1cyclictest9-21ksoftirqd/022:55:140
275139994,2cyclictest254-21systemd-journal22:25:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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