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2026-04-19 - 08:42
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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 Sun Apr 19, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1865999252,18cyclictest0-21swapper/019:35:010
1866899237,13cyclictest0-21swapper/220:49:122
1866399230,5cyclictest0-21swapper/100:25:011
1865999220,4cyclictest0-21swapper/022:39:000
1865999220,18cyclictest0-21swapper/023:20:000
1866899210,19cyclictest399-20systemd-journal21:10:012
1866899204,15cyclictest0-21swapper/200:30:322
1866399200,5cyclictest0-21swapper/100:19:331
1866399200,3cyclictest4099-21H222:10:211
1866399200,17cyclictest0-21swapper/100:00:191
18659992018,1cyclictest0-21swapper/020:35:060
1866899193,15cyclictest0-21swapper/221:55:182
1866899192,1cyclictest0-21swapper/222:01:182
18668991916,2cyclictest8082-21nfsd423:35:182
18668991916,2cyclictest0-21swapper/222:39:102
1866899191,1cyclictest0-21swapper/200:26:572
1866899190,18cyclictest0-21swapper/223:35:002
1866399197,9cyclictest21617-21latency_hist23:05:001
1866399195,13cyclictest0-21swapper/122:24:171
18663991916,2cyclictest2314-21nfsd423:25:191
18663991913,3cyclictest0-21swapper/100:34:471
1866399190,18cyclictest0-21swapper/120:50:131
1866399190,18cyclictest0-21swapper/120:30:191
18659991917,1cyclictest0-21swapper/022:26:150
18659991916,2cyclictest19725-21chrt22:02:170
1866899182,15cyclictest3987-21H222:10:212
1866899182,15cyclictest0-21swapper/200:15:182
18668991813,1cyclictest0-21swapper/220:10:132
1866899181,2cyclictest18262-21chrt21:03:252
1866899181,2cyclictest16680-21expr22:55:142
1866899180,3cyclictest32612-21sed22:25:182
1866899180,2cyclictest29847-21missed_timers20:25:172
1866899180,16cyclictest3979-21H222:10:212
1866899180,16cyclictest13030-21nfsd419:55:172
18663991814,3cyclictest3979-21H222:10:211
1866399181,16cyclictest7000-21idleruntime19:45:161
1866399181,16cyclictest10498-21munin-run20:50:001
1866399180,17cyclictest11957-21nvmesmart_nvme022:45:181
1866399180,16cyclictest1829-21systemd-journal22:36:581
18659991816,1cyclictest24402-21taskset19:20:060
18659991816,1cyclictest0-21swapper/023:45:160
18659991816,1cyclictest0-21swapper/021:15:290
18659991814,3cyclictest893-21fschecks_time21:30:140
1865999181,2cyclictest993-21dbus-daemon22:40:190
1865999181,2cyclictest12635-21chrt22:47:180
1865999180,3cyclictest20004-21sort20:09:020
1865999180,3cyclictest20004-21sort20:09:010
1865999180,17cyclictest843-21systemd-network20:55:450
1865999180,17cyclictest0-21swapper/000:35:190
1865999180,15cyclictest3989-21H222:10:210
1866899178,5cyclictest0-21swapper/220:01:532
18668991714,2cyclictest9591-21proc_pri00:35:182
18668991714,2cyclictest7215-21latency19:45:172
18668991714,2cyclictest3985-21H222:10:212
18668991714,2cyclictest29672-21latency22:20:172
18668991714,2cyclictest27628-21strings00:10:162
18668991714,2cyclictest27001-21latency22:15:182
18668991714,2cyclictest2314-21nfsd423:25:182
18668991714,2cyclictest22373-21fschecks_time19:15:152
18668991714,2cyclictest17506-21anvil23:54:382
18668991714,2cyclictest14180-21switchtime23:45:182
1866899171,15cyclictest23711-21nvmesmart_nvme023:05:182
1866899170,2cyclictest3991-21H222:10:212
1866899170,2cyclictest3981-21H222:10:212
1866899170,2cyclictest32705-21nfsd420:30:172
1866899170,2cyclictest30080-21expr19:30:142
1866899170,2cyclictest24988-21pzem_voltage00:05:192
1866899170,2cyclictest23959-21tune2fs20:15:142
1866899170,2cyclictest18268-21expr23:55:152
1866899170,16cyclictest8747-21latency_hist21:45:002
1866899170,16cyclictest6619-21processes20:40:182
1866899170,16cyclictest457-21expr19:35:142
1866899170,16cyclictest4023-21PluginScanner23:15:082
1866899170,16cyclictest3991-21H222:10:212
1866899170,16cyclictest31740-21ls23:20:182
1866899170,16cyclictest25686-21awk21:15:182
1866899170,16cyclictest16744-21snapd22:47:322
1866899170,16cyclictest16743-21snapd21:23:122
1866899170,16cyclictest13317-21cpu22:50:122
1866899170,16cyclictest12932-21netstat21:50:182
1866899170,16cyclictest10516-21processes21:45:202
1866899170,16cyclictest10352-21expr23:40:132
18663991715,1cyclictest99002sleep122:42:061
18663991715,1cyclictest267022sleep121:19:411
18663991714,2cyclictest7274-21latency21:40:171
18663991714,2cyclictest5344-21timerandwakeup19:40:211
18663991714,2cyclictest3985-21H222:10:211
18663991714,2cyclictest3310-21grep22:30:171
18663991714,2cyclictest27554-21sed20:20:181
18663991714,2cyclictest25423-21chrt20:17:511
18663991714,2cyclictest18385-21smartctl20:05:171
18663991714,2cyclictest18385-21smartctl20:05:161
18663991714,2cyclictest1246-21latency21:30:161
1866399171,15cyclictest11761-21cpuspeed_turbos19:55:121
1866399170,2cyclictest5704-21wc23:30:201
1866399170,2cyclictest5424-21cat20:40:131
1866399170,2cyclictest455-21plymouthd23:35:151
1866399170,2cyclictest3981-21H222:10:211
1866399170,2cyclictest3979-21H222:10:211
1866399170,2cyclictest3720-21sendmail_mailqu20:35:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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