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2026-05-26 - 07:04
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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 Tue May 26, 2026 00:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
233442215152,49sleep20-21swapper/219:06:382
234762213149,50sleep00-21swapper/019:08:210
235042207151,21sleep10-21swapper/119:08:431
232682199160,26sleep30-21swapper/319:05:393
8152130,0sleep228-21ksoftirqd/200:24:182
23697991313,0cyclictest0-21swapper/123:39:161
23697991313,0cyclictest0-21swapper/121:41:521
23697991313,0cyclictest0-21swapper/121:41:521
23714991211,1cyclictest35-21ksoftirqd/319:31:283
2370699120,1cyclictest24099-21/usr/sbin/munin22:45:152
2369499123,4cyclictest3761-21munin-run21:35:000
23694991211,1cyclictest9-21ksoftirqd/023:35:010
2369499113,4cyclictest10845-21perf19:50:010
23694991110,1cyclictest9-21ksoftirqd/000:00:140
247592100,1sleep324762-21cut22:45:143
2371499108,2cyclictest16527-21latency_hist21:09:593
2370699109,1cyclictest21393-21/usr/sbin/munin23:25:192
2370699106,3cyclictest2173-21sh21:31:012
2369499109,1cyclictest9-21ksoftirqd/000:25:200
2369499108,1cyclictest9-21ksoftirqd/021:00:140
2369499108,1cyclictest9-21ksoftirqd/000:40:000
168722100,0sleep016542-21diskmemload23:18:370
8197290,1sleep10-21swapper/122:22:591
237069991,7cyclictest26840-21sh21:21:082
237069991,6cyclictest32026-21rm22:55:122
237069990,4cyclictest19148-21apt-get21:55:122
236949999,0cyclictest9-21ksoftirqd/023:35:120
236949999,0cyclictest9-21ksoftirqd/021:40:140
236949999,0cyclictest9-21ksoftirqd/021:40:140
236949998,1cyclictest9-21ksoftirqd/023:45:140
236949998,1cyclictest9-21ksoftirqd/022:45:130
236949998,1cyclictest9-21ksoftirqd/021:45:170
236949998,1cyclictest9-21ksoftirqd/020:15:140
236949997,1cyclictest9-21ksoftirqd/020:25:000
236949997,1cyclictest9-21ksoftirqd/019:29:590
236949992,5cyclictest17553-1kworker/u9:121:51:400
236949992,4cyclictest10010-21perf23:10:000
26040280,1sleep226039-21basename19:15:002
237149988,0cyclictest35-21ksoftirqd/300:34:183
237149983,3cyclictest0-21swapper/322:09:593
237069987,1cyclictest7050-21sh23:05:132
237069986,1cyclictest61650irq/122-eno123:45:132
237069986,1cyclictest61650irq/122-eno121:45:192
237069984,2cyclictest61650irq/122-eno122:20:212
237069984,1cyclictest0-21swapper/223:33:212
237069983,3cyclictest240-21systemd-journal20:25:082
237069983,2cyclictest240-21systemd-journal00:00:112
237069980,7cyclictest0-21swapper/222:13:452
236979980,4cyclictest0-21swapper/121:35:161
236949988,0cyclictest9-21ksoftirqd/000:30:120
236949987,1cyclictest9-21ksoftirqd/023:52:120
236949987,1cyclictest9-21ksoftirqd/021:20:140
236949986,2cyclictest11702-21fschecks_time19:50:140
236949986,1cyclictest9-21ksoftirqd/021:10:120
236949986,1cyclictest9-21ksoftirqd/019:20:000
236949986,1cyclictest17529-21sh22:35:150
236949986,1cyclictest17529-21sh22:35:150
236949980,8cyclictest0-21swapper/020:08:100
236949980,4cyclictest26353-21latency_hist22:04:590
236949980,4cyclictest0-21swapper/000:22:180
236949980,2cyclictest240-21systemd-journal22:19:590
237149975,2cyclictest16779-21sh23:18:193
237149975,1cyclictest7806-21ssh22:21:513
237149975,0cyclictest13650irq/124-ahci[0020:24:553
237149973,3cyclictest23683-21cyclictest23:35:173
237149973,3cyclictest11688-21apt-get21:45:123
237149973,2cyclictest240-21systemd-journal23:45:273
237149973,2cyclictest240-21systemd-journal00:37:283
237149973,1cyclictest2625-21apt-get20:40:103
237149971,4cyclictest0-21swapper/323:20:073
237149971,4cyclictest0-21swapper/300:25:293
237149971,2cyclictest0-21swapper/300:20:203
237149970,5cyclictest7552-21apt-get23:50:103
237149970,4cyclictest0-21swapper/323:42:353
237149970,3cyclictest240-21systemd-journal23:00:003
237149970,2cyclictest0-21swapper/322:36:533
237149970,2cyclictest0-21swapper/322:36:523
237149970,2cyclictest0-21swapper/321:11:233
237069977,0cyclictest0-21swapper/223:54:052
237069976,1cyclictest61650irq/122-eno123:11:402
237069976,1cyclictest61650irq/122-eno122:40:122
237069976,1cyclictest61650irq/122-eno121:51:452
237069976,1cyclictest61650irq/122-eno121:40:192
237069976,1cyclictest61650irq/122-eno121:40:192
237069976,1cyclictest61650irq/122-eno100:35:132
237069976,1cyclictest61650irq/122-eno100:10:112
237069976,1cyclictest0-21swapper/200:15:312
237069976,0cyclictest61650irq/122-eno121:10:122
237069975,1cyclictest61650irq/122-eno123:40:412
237069975,1cyclictest61650irq/122-eno123:20:202
237069975,1cyclictest61650irq/122-eno122:30:112
237069975,1cyclictest61650irq/122-eno122:00:112
237069975,1cyclictest31191-21sshd21:27:292
237069975,1cyclictest21896-21ssh00:09:232
237069973,2cyclictest240-21systemd-journal19:43:072
237069973,2cyclictest240-21systemd-journal00:25:582
237069970,7cyclictest0-21swapper/221:39:532
237069970,6cyclictest14398-21expr23:15:142
237069970,2cyclictest0-21swapper/219:30:102
236979971,5cyclictest0-21swapper/122:05:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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