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2026-08-09 - 06:03
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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 Aug 09, 2026 00:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1956899240,18cyclictest0-21swapper/122:04:381
1956899231,21cyclictest5809-21cat21:35:151
1956999220,18cyclictest0-21swapper/222:15:162
1956899222,1cyclictest5245-21chrt23:28:041
19568992214,7cyclictest15376-21apache_processe22:50:121
19568992214,7cyclictest15376-21apache_processe22:50:121
19568992214,7cyclictest10238-21apache_processe00:35:121
1956899220,3cyclictest6932-21tr20:40:131
1956899220,2cyclictest3450-21gsd-color20:55:141
1956899220,2cyclictest19526-21cut22:00:011
1956899220,21cyclictest27730-21expr20:20:141
1956899220,1cyclictest26898-21ntpq00:05:201
1956899220,1cyclictest26898-21ntpq00:05:201
1956899220,1cyclictest0-21swapper/123:00:211
1956899220,1cyclictest0-21swapper/120:25:151
1956899220,1cyclictest0-21swapper/100:01:001
1956899220,17cyclictest4282-21sort19:39:011
1956899220,16cyclictest32436-21awk19:30:171
1956899220,16cyclictest31531-21http_loadtime22:20:171
1956899220,16cyclictest0-21swapper/119:25:161
1956899220,15cyclictest2640-21irqstats00:20:161
1956899220,15cyclictest20074-21apt-get21:05:011
1956899220,15cyclictest0-21swapper/119:45:151
19569992115,5cyclictest19315-21python323:55:012
1956899212,1cyclictest3989-21H222:10:211
19568992114,6cyclictest23020-21df22:05:131
19568992114,6cyclictest18426-21expr22:55:131
19568992114,6cyclictest14898-21cat20:55:011
19568992114,6cyclictest0-21swapper/121:30:151
19568992114,6cyclictest0-21swapper/120:00:201
19568992114,6cyclictest0-21swapper/119:50:191
19568992113,7cyclictest631-21apt-key20:30:021
19568992113,7cyclictest27305-21cat21:15:161
19568992113,7cyclictest14974-21munin-plugin-st22:50:001
1956899211,1cyclictest0-21swapper/121:20:141
1956899210,2cyclictest19331-21http23:55:011
1956899210,2cyclictest15000-21sed19:55:211
1956899210,20cyclictest30273-21timerandwakeup00:10:211
1956899210,20cyclictest14504-21snapd23:12:581
1956899210,20cyclictest0-21swapper/123:45:141
1956899210,1cyclictest0-21swapper/123:36:171
1956899210,1cyclictest0-21swapper/121:40:151
1956899210,1cyclictest0-21swapper/119:45:001
1956899210,1cyclictest0-21swapper/100:30:221
1956899210,1cyclictest0-21swapper/100:30:221
1956899210,16cyclictest5176-21grep20:35:191
1956899210,16cyclictest3987-21H222:10:211
1956899210,16cyclictest28626-21cstates22:15:141
1956899210,15cyclictest121472chrt22:44:231
1956899210,15cyclictest0-21swapper/123:55:141
1956899210,15cyclictest0-21swapper/123:05:171
1956899210,14cyclictest0-21swapper/121:10:171
1956999200,19cyclictest0-21swapper/219:55:162
19568992015,4cyclictest0-21swapper/121:28:401
19568992014,5cyclictest0-21swapper/123:20:121
19568992014,5cyclictest0-21swapper/121:50:181
1956899200,1cyclictest12146-21grep21:45:141
1956899200,1cyclictest0-21swapper/123:30:151
1956899200,19cyclictest0-21swapper/122:25:171
1956899200,19cyclictest0-21swapper/122:10:151
1956899200,18cyclictest0-21swapper/123:15:131
1956899200,18cyclictest0-21swapper/123:15:131
1956899200,15cyclictest0-21swapper/120:05:161
1956899200,14cyclictest0-21swapper/123:40:181
1956899200,14cyclictest0-21swapper/123:40:181
1956899200,14cyclictest0-21swapper/120:10:241
1956899200,0cyclictest0-21swapper/120:48:531
19569991916,2cyclictest30938-21expr23:15:192
19569991916,2cyclictest30938-21expr23:15:182
19569991914,2cyclictest3989-21H222:10:212
19568991911,2cyclictest20150-21ls19:10:151
19568991911,1cyclictest0-21swapper/121:00:211
1956899190,18cyclictest0-21swapper/120:15:181
1956899190,18cyclictest0-21swapper/119:20:171
1956899190,18cyclictest0-21swapper/100:15:141
1956899190,14cyclictest0-21swapper/100:25:561
19567991917,1cyclictest0-21swapper/023:04:040
19567991917,1cyclictest0-21swapper/021:17:040
19569991816,1cyclictest18728-21grep22:55:142
19569991815,2cyclictest3204-21JS22:10:212
19569991815,2cyclictest28257-21cat21:15:222
19569991815,2cyclictest24171-21ntpq00:00:192
1956999181,16cyclictest0-21swapper/222:00:212
1956999180,1cyclictest0-21swapper/219:50:242
1956999180,17cyclictest27405-21cpuspeed_turbos20:20:132
1956999180,17cyclictest0-21swapper/220:30:022
1956899180,0cyclictest0-21swapper/122:36:131
1956799183,14cyclictest0-21swapper/022:25:150
1956799182,15cyclictest9-21ksoftirqd/020:38:170
1956799182,15cyclictest21315-21cat21:05:140
19567991816,1cyclictest321042chrt19:30:160
19567991816,1cyclictest17422-21nfsd420:00:210
19567991815,2cyclictest4099-21H222:10:210
19567991815,2cyclictest26616-21tlsmgr00:16:170
1956799181,3cyclictest0-21swapper/021:25:200
1956799180,3cyclictest3985-21H222:10:210
1956799180,3cyclictest13205-21grep19:55:010
1956799180,17cyclictest426-21systemd-udevd21:58:520
1956799180,17cyclictest399-20systemd-journal20:35:000
1956799180,16cyclictest27439-21tr20:20:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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