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2026-09-01 - 11:57
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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 100 highest latencies:
System rack1slot1.osadl.org (updated Tue Sep 01, 2026 00:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14262220158,47sleep10-21swapper/119:06:121
14662219155,52sleep20-21swapper/219:06:412
15242216157,46sleep30-21swapper/319:07:283
16282201162,24sleep00-21swapper/019:08:490
185599219,0cyclictest0-21swapper/220:10:022
82292200,0sleep00-21swapper/022:13:520
1855991212,0cyclictest0-21swapper/219:40:192
185599119,1cyclictest28-21ksoftirqd/220:19:592
183399119,1cyclictest9-21ksoftirqd/022:05:210
183399119,1cyclictest9-21ksoftirqd/020:10:160
183399113,4cyclictest12976-21cat21:34:590
183399112,4cyclictest22843-21latency_hist00:10:010
183399110,9cyclictest26340-21apt-get22:40:110
183399110,5cyclictest19924-21perf21:45:010
1862991010,0cyclictest35-21ksoftirqd/300:10:013
185599109,1cyclictest28-21ksoftirqd/223:00:162
185599109,1cyclictest28-21ksoftirqd/222:10:002
183399109,1cyclictest9-21ksoftirqd/023:25:130
183399109,1cyclictest9-21ksoftirqd/023:00:160
133432100,0sleep30-21swapper/323:53:253
18629990,4cyclictest26658-21ssh22:40:133
18559998,1cyclictest28-21ksoftirqd/223:45:002
18559998,1cyclictest28-21ksoftirqd/220:40:002
18559991,5cyclictest561-21nscd22:30:172
18559990,9cyclictest0-21swapper/221:14:022
18339999,0cyclictest9-21ksoftirqd/020:35:200
18339998,1cyclictest9-21ksoftirqd/022:45:140
18339998,1cyclictest9-21ksoftirqd/021:30:000
18339998,1cyclictest9-21ksoftirqd/000:20:010
18339997,1cyclictest9-21ksoftirqd/021:45:520
18339997,1cyclictest9-21ksoftirqd/021:10:110
18339991,4cyclictest23961-21perf19:55:010
18339990,1cyclictest240-21systemd-journal21:19:590
18629987,1cyclictest1002-21nscd19:20:003
18629987,0cyclictest35-21ksoftirqd/300:40:003
18629986,1cyclictest35-21ksoftirqd/320:14:593
18629986,1cyclictest35-21ksoftirqd/319:46:153
18629986,1cyclictest1747-21ntpd22:15:593
18629981,4cyclictest0-21swapper/323:20:123
18559987,1cyclictest28-21ksoftirqd/222:15:132
18559987,1cyclictest28-21ksoftirqd/221:20:132
18559987,1cyclictest28-21ksoftirqd/221:05:002
18559987,1cyclictest28-21ksoftirqd/219:39:592
18559987,1cyclictest28-21ksoftirqd/200:24:592
18559987,1cyclictest28-21ksoftirqd/200:05:012
18559986,2cyclictest0-21swapper/222:02:392
18559986,1cyclictest28-21ksoftirqd/221:15:152
18559986,1cyclictest28-21ksoftirqd/219:24:592
18559986,1cyclictest28-21ksoftirqd/200:15:172
18559986,1cyclictest27334-21diskmemload21:30:182
18559980,8cyclictest0-21swapper/222:20:142
18339988,0cyclictest9-21ksoftirqd/021:05:130
18339987,1cyclictest9-21ksoftirqd/023:15:120
18339987,1cyclictest9-21ksoftirqd/022:00:090
18339987,1cyclictest9-21ksoftirqd/020:55:130
18339987,1cyclictest9-21ksoftirqd/020:55:130
18339987,1cyclictest9-21ksoftirqd/000:10:090
18339986,1cyclictest9-21ksoftirqd/022:40:010
18339986,1cyclictest7218-21cat20:25:160
18339984,3cyclictest1982-21sendmail-mta20:31:100
18339983,5cyclictest28568-21ssh21:55:210
18339982,2cyclictest27334-21diskmemload00:34:530
18339980,7cyclictest7148-21ssh23:45:110
18339980,7cyclictest4220-21ssh00:28:550
18339980,7cyclictest3910-21sed21:20:210
18339980,7cyclictest0-21swapper/021:35:160
18339980,4cyclictest240-21systemd-journal22:30:010
18339980,4cyclictest14262-21latency_hist19:35:000
18339980,1cyclictest31739-21ssh23:33:540
18629976,1cyclictest11301-21snmpd00:25:383
18629975,1cyclictest27334-21diskmemload21:30:183
18629975,1cyclictest11301-21snmpd21:07:153
18629974,1cyclictest27334-21diskmemload23:05:523
18629973,2cyclictest240-21systemd-journal19:35:003
18629972,3cyclictest2369-21kworker/u8:021:22:313
18629972,2cyclictest23634-21apt-get21:50:113
18629971,1cyclictest0-21swapper/300:15:143
18629970,4cyclictest9793-21/usr/sbin/munin19:25:133
18629970,2cyclictest0-21swapper/322:20:123
18629970,2cyclictest0-21swapper/319:35:133
18559977,0cyclictest28-21ksoftirqd/200:24:592
18559977,0cyclictest271rcuc/219:15:012
18559976,1cyclictest61650irq/122-eno123:15:392
18559976,1cyclictest61650irq/122-eno121:25:332
18559976,1cyclictest28-21ksoftirqd/223:50:122
18559976,1cyclictest16798-21ssh22:25:152
18559976,1cyclictest11301-21snmpd20:29:122
18559976,1cyclictest11301-21snmpd19:53:342
18559976,0cyclictest61650irq/122-eno123:25:112
18559976,0cyclictest61650irq/122-eno100:05:082
18559975,1cyclictest61650irq/122-eno122:45:142
18559975,1cyclictest61650irq/122-eno121:50:122
18559975,1cyclictest61650irq/122-eno100:35:202
18559975,1cyclictest28-21ksoftirqd/220:50:142
18559975,1cyclictest11301-21snmpd20:44:132
18559973,2cyclictest1815-21cyclictest21:47:132
18559970,6cyclictest1747-21ntpd23:35:372
18559970,5cyclictest20013-21kworker/2:023:05:152
18559970,1cyclictest0-21swapper/222:55:002
18479972,0cyclictest0-21swapper/100:00:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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