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2026-05-28 - 17:04
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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 Thu May 28, 2026 12:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256252214180,22sleep30-21swapper/307:05:593
238272213148,21sleep00-21swapper/007:05:070
259142202165,24sleep20-21swapper/207:09:442
257522197158,26sleep10-21swapper/107:07:391
294302630,0sleep10-21swapper/112:15:171
169612590,0sleep30-21swapper/310:31:533
180992170,0sleep20-21swapper/210:35:012
258642160,0sleep10-21swapper/109:18:331
77852140,0sleep30-21swapper/311:45:273
2605699140,13cyclictest0-21swapper/209:50:152
231442140,0sleep30-21swapper/311:24:443
2605699130,0cyclictest0-21swapper/211:00:112
2605699120,4cyclictest12942-21runrttasks10:25:592
2605199120,12cyclictest0-21swapper/109:50:101
2604299125,6cyclictest9456-21wc11:50:000
26042991212,0cyclictest9-21ksoftirqd/011:20:130
26042991211,1cyclictest9-21ksoftirqd/012:15:010
2605699110,10cyclictest28377-21munin-node12:27:532
2605699110,10cyclictest0-21swapper/210:15:202
2604299119,1cyclictest9-21ksoftirqd/011:10:140
2604299119,1cyclictest9-21ksoftirqd/010:05:130
2604299119,1cyclictest9-21ksoftirqd/009:45:180
26042991110,1cyclictest9-21ksoftirqd/012:15:120
26042991110,1cyclictest9-21ksoftirqd/010:30:000
26042991110,1cyclictest9-21ksoftirqd/010:20:150
26042991110,1cyclictest9-21ksoftirqd/010:20:140
26042991110,1cyclictest9-21ksoftirqd/010:05:010
2604299111,5cyclictest20556-21latency_hist12:05:000
2606599108,1cyclictest35-21ksoftirqd/310:00:003
2605699101,4cyclictest1982-21sendmail-mta10:35:322
2605699101,3cyclictest1731-21dump-pmu-power09:30:012
2605699101,2cyclictest11547-21cstates07:45:122
2605699100,3cyclictest15358-21taskset07:50:542
2605699100,2cyclictest240-21systemd-journal07:45:012
2604299109,1cyclictest9-21ksoftirqd/012:30:090
2604299109,1cyclictest9-21ksoftirqd/011:25:130
2604299109,1cyclictest9-21ksoftirqd/009:30:200
2604299102,4cyclictest20463-21perf08:05:010
260659997,1cyclictest35-21ksoftirqd/310:10:003
260659990,7cyclictest561-21nscd09:31:283
260659990,0cyclictest0-21swapper/311:16:453
260569997,1cyclictest28-21ksoftirqd/208:35:012
260569996,3cyclictest61650irq/122-eno111:11:212
260569996,3cyclictest61650irq/122-eno109:55:202
260569996,3cyclictest61650irq/122-eno109:05:152
260569994,1cyclictest61650irq/122-eno112:10:202
260569994,1cyclictest61650irq/122-eno110:50:172
260569994,1cyclictest3112-21ssh10:55:432
260569994,1cyclictest1029-21snmpd10:12:242
260569993,1cyclictest3175-21grep08:35:162
260569993,1cyclictest19433-21ntpq08:00:172
260569992,1cyclictest19865-21cut11:20:122
260569991,1cyclictest240-21systemd-journal07:15:002
260569990,4cyclictest18666-21diskmemload10:05:182
260569990,2cyclictest0-21swapper/211:48:012
260569990,1cyclictest30345-21latency_hist09:25:002
260569990,1cyclictest240-21systemd-journal11:55:012
260569990,1cyclictest240-21systemd-journal08:59:592
260569990,1cyclictest240-21systemd-journal08:30:002
260569990,1cyclictest240-21systemd-journal08:25:002
260569990,1cyclictest240-21systemd-journal08:15:002
260569990,1cyclictest240-21systemd-journal07:15:012
260569990,1cyclictest0-21swapper/212:05:132
260569990,1cyclictest0-21swapper/209:15:012
260519990,0cyclictest0-21swapper/110:45:101
260429999,0cyclictest9-21ksoftirqd/012:35:150
260429999,0cyclictest9-21ksoftirqd/009:40:110
260429998,1cyclictest9-21ksoftirqd/012:09:180
260429998,1cyclictest9-21ksoftirqd/010:30:150
260429998,1cyclictest9-21ksoftirqd/009:20:130
260429997,1cyclictest9-21ksoftirqd/012:20:130
260429993,5cyclictest3729-21perf07:30:010
260429990,5cyclictest30958-21apt11:35:110
260659988,0cyclictest35-21ksoftirqd/309:40:223
260659986,1cyclictest14464-21cat07:50:143
260659986,1cyclictest1029-21snmpd11:06:203
260659986,1cyclictest1029-21snmpd10:55:023
260659986,1cyclictest1029-21snmpd10:16:393
260659986,1cyclictest1029-21snmpd09:20:083
260659986,1cyclictest1029-21snmpd09:12:223
260659986,1cyclictest1029-21snmpd08:16:173
260659981,4cyclictest32454-21apt-get08:30:103
260659980,5cyclictest0-21swapper/311:50:413
260659980,5cyclictest0-21swapper/308:04:203
260659980,3cyclictest24505-21/usr/sbin/munin12:10:173
260569987,0cyclictest0-21swapper/211:56:412
260569986,2cyclictest61650irq/122-eno111:38:402
260569986,2cyclictest61650irq/122-eno109:33:562
260569986,1cyclictest61650irq/122-eno112:30:112
260569985,3cyclictest61650irq/122-eno112:35:082
260569985,3cyclictest61650irq/122-eno110:45:192
260569985,3cyclictest61650irq/122-eno110:40:212
260569984,3cyclictest1329-21cron07:25:002
260569983,2cyclictest548-21systemd-logind09:35:182
260569983,1cyclictest9830-21ntpq11:05:162
260569982,1cyclictest16455-21taskset09:48:552
260569980,4cyclictest24999-21wc11:25:182
260569980,3cyclictest4138-21diskmemload11:40:362
260569980,1cyclictest6484-21/usr/sbin/munin07:35:082
260569980,1cyclictest240-21systemd-journal11:34:552
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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