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2026-05-20 - 06:13
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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 rackdslot0.osadl.org (updated Wed May 20, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
704992825,2cyclictest21-21ksoftirqd/123:55:131
70899250,24cyclictest0-21swapper/223:55:132
69999220,4cyclictest0-21swapper/019:53:180
70899210,3cyclictest0-21swapper/200:35:002
708992017,2cyclictest26071-21processes23:40:182
70899200,19cyclictest843-21systemd-network20:35:392
704992016,3cyclictest16324-21fgrep00:20:221
699992017,2cyclictest7695-21nvmesmart_nvme000:05:240
70899192,16cyclictest2069-21systemd-udevd00:28:512
708991919,0cyclictest0-21swapper/220:12:592
708991917,1cyclictest0-21swapper/223:36:572
708991917,1cyclictest0-21swapper/223:36:572
708991917,1cyclictest0-21swapper/222:40:182
70899190,4cyclictest399-20systemd-journal20:04:552
70899190,18cyclictest22693-21grep20:45:022
70499192,16cyclictest12071-21grep23:15:191
704991917,1cyclictest0-21swapper/120:59:261
704991916,2cyclictest0-21swapper/100:10:391
70499190,4cyclictest30180-21nfsd422:50:191
70499190,3cyclictest0-21swapper/121:40:181
699991917,1cyclictest9998-21which00:10:160
699991917,1cyclictest14847-21cat00:20:150
69999190,18cyclictest0-21swapper/022:19:500
70899182,15cyclictest30415-21uname22:50:212
70899182,15cyclictest28-21ksoftirqd/200:16:172
70899182,15cyclictest15155-21cat20:30:162
70899182,15cyclictest13383-21timerandwakeup20:25:212
708991816,1cyclictest7855-21timerandwakeup22:10:212
708991816,1cyclictest28-21ksoftirqd/221:21:302
708991816,1cyclictest0-21swapper/223:27:252
708991816,1cyclictest0-21swapper/223:15:202
708991815,1cyclictest0-21swapper/200:21:262
708991814,3cyclictest3989-21H222:10:212
70899181,2cyclictest3053-21systemd-logind19:10:522
70899180,17cyclictest364-21processes21:00:192
70899180,15cyclictest3985-21H222:10:212
70499182,1cyclictest179882sleep121:32:221
704991816,1cyclictest0-21swapper/122:44:101
704991816,1cyclictest0-21swapper/100:38:241
704991815,2cyclictest0-21swapper/121:10:011
704991814,3cyclictest0-21swapper/122:56:511
704991813,4cyclictest3976-21H222:10:211
70499181,1cyclictest0-21swapper/120:35:471
70499180,2cyclictest3976-21H222:10:211
70499180,18cyclictest0-21swapper/122:45:181
70499180,17cyclictest3979-21H222:10:211
70499180,16cyclictest3983-21H222:10:211
70499180,15cyclictest3979-21H222:10:211
69999182,15cyclictest31182-21chrt22:54:470
699991816,1cyclictest9-21ksoftirqd/023:28:000
699991814,3cyclictest7706-21sed23:10:000
699991813,5cyclictest0-21swapper/020:20:020
69999180,3cyclictest3987-21H222:10:210
69999180,2cyclictest4035-21H222:10:210
69999180,1cyclictest0-21swapper/022:40:000
69999180,17cyclictest4035-21H222:10:210
69999180,15cyclictest4099-21H222:10:210
69999180,15cyclictest3985-21H222:10:210
70899178,7cyclictest0-21swapper/220:45:182
708991715,1cyclictest3976-21H222:10:212
708991715,1cyclictest16320-21nfsd419:35:192
708991715,1cyclictest0-21swapper/222:35:172
708991715,1cyclictest0-21swapper/200:01:532
708991714,2cyclictest993-21dbus-daemon21:15:232
708991714,2cyclictest3053-21systemd-logind23:30:512
708991714,2cyclictest28175-21nfsd421:50:182
708991714,2cyclictest28175-21nfsd421:50:182
708991714,2cyclictest25047-21cat21:45:182
708991714,2cyclictest21651-21cpuspeed_turbos21:40:142
708991714,2cyclictest21395-21fschecks_time19:45:152
70899170,2cyclictest9543-21/usr/sbin/munin23:10:192
70899170,2cyclictest5304-21expr21:10:142
70899170,2cyclictest3987-21H222:10:212
70899170,2cyclictest27298-21processes20:50:202
70899170,2cyclictest1829-21systemd-journal19:45:002
70899170,2cyclictest14777-21expr22:25:132
70899170,2cyclictest10015-21http_loadtime00:10:162
70899170,2cyclictest0-21swapper/200:09:372
70899170,16cyclictest6345-21postgres19:18:172
70899170,16cyclictest3991-21H222:10:212
70899170,16cyclictest3976-21H222:10:212
70899170,16cyclictest3976-21H222:10:212
70899170,16cyclictest3053-21systemd-logind22:04:522
70899170,16cyclictest3053-21systemd-logind19:50:522
70899170,16cyclictest2493-21idleruntime21:05:162
70899170,16cyclictest0-21swapper/222:16:002
704991715,1cyclictest0-21swapper/121:25:201
704991714,2cyclictest4099-21H222:10:211
704991714,2cyclictest2962-21apache_processe22:05:131
704991714,2cyclictest28258-21chrt19:56:591
704991714,2cyclictest1379-21mailstats20:05:211
704991714,2cyclictest1379-21mailstats20:05:211
704991714,2cyclictest11499-21missed_timers21:20:171
704991714,2cyclictest10552-21cat23:15:011
704991714,1cyclictest0-21swapper/119:23:081
70499171,15cyclictest21-21ksoftirqd/119:31:091
70499171,15cyclictest0-21swapper/123:20:491
70499170,2cyclictest863-21avahi-daemon22:15:221
70499170,2cyclictest6342-21ntp_offset21:10:191
70499170,2cyclictest4099-21H222:10:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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