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2026-08-18 - 04:45
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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 Tue Aug 18, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30778992516,9cyclictest0-21swapper/121:33:071
3077899222,17cyclictest0-21swapper/100:05:341
30778992220,1cyclictest21-21ksoftirqd/123:06:331
30773992119,1cyclictest17057-21if_eno121:35:180
30783992018,1cyclictest0-21swapper/219:10:162
3077899204,1cyclictest0-21swapper/123:43:311
30778992012,4cyclictest0-21swapper/122:05:121
30778992012,4cyclictest0-21swapper/122:05:121
3078399192,1cyclictest5577-21grep21:15:152
3078399192,1cyclictest5577-21grep21:15:152
30783991917,1cyclictest0-21swapper/220:15:152
3078399190,17cyclictest13096-21sed21:30:022
30778991913,3cyclictest0-21swapper/100:30:171
3077899190,18cyclictest0-21swapper/123:54:541
3077399193,15cyclictest0-21swapper/000:13:030
3077399190,18cyclictest15954-21nfsd422:30:190
3077399190,18cyclictest15954-21nfsd422:30:180
3078399183,14cyclictest0-21swapper/219:42:422
30783991817,1cyclictest0-21swapper/220:45:202
30783991816,1cyclictest0-21swapper/221:35:022
30783991815,2cyclictest8003-21processes00:10:192
30783991815,2cyclictest4445-21taskset22:10:142
30783991815,2cyclictest14550-21snapd20:07:582
30783991815,2cyclictest1274-21runrttasks23:24:522
30783991814,3cyclictest1085-21gdbus22:50:212
3078399181,16cyclictest0-21swapper/220:55:202
3078399180,17cyclictest1461-21/usr/sbin/munin19:15:122
3077899182,15cyclictest0-21swapper/122:52:311
30778991817,1cyclictest0-21swapper/121:11:301
30778991814,3cyclictest30588-21anvil21:04:511
3077899180,2cyclictest399-20systemd-journal00:39:001
3077899180,17cyclictest10601-21cpuspeed_turbos21:25:151
3077899180,15cyclictest0-21swapper/123:57:571
3077399182,15cyclictest0-21swapper/022:04:560
30773991815,2cyclictest22516-21chrt22:43:520
30773991815,2cyclictest1351-21lxd19:10:510
30773991814,3cyclictest17650-21grep00:30:140
30773991813,4cyclictest11588-21nfsd423:20:190
30773991812,3cyclictest0-21swapper/019:45:010
3077399180,17cyclictest21498-21munin-plugin-st21:45:000
3077399180,17cyclictest21498-21munin-plugin-st21:45:000
30783991716,1cyclictest28-21ksoftirqd/219:21:362
30783991715,1cyclictest20682-21processes21:40:222
30783991715,1cyclictest20682-21processes21:40:212
30783991715,1cyclictest0-21swapper/223:45:042
30783991715,1cyclictest0-21swapper/220:40:532
30783991714,2cyclictest7999-21sendmail_mailqu22:15:202
30783991714,2cyclictest32643-21smartctl23:00:192
30783991714,2cyclictest32333-21memory21:05:182
30783991714,2cyclictest31430-21ntpq23:55:192
30783991714,2cyclictest30100-21apache_volume22:00:132
30783991714,2cyclictest27800-21expr23:50:142
30783991714,2cyclictest23140-21nfsd423:40:172
30783991714,2cyclictest13231-21nfsd400:20:202
30783991714,2cyclictest1085-21gdbus20:25:222
30783991714,2cyclictest0-21swapper/223:35:002
3078399171,15cyclictest14532-21sh20:35:022
3078399170,2cyclictest3707-21master19:53:282
3078399170,2cyclictest21595-21cut22:40:192
3078399170,2cyclictest1781-21ps20:10:212
3078399170,2cyclictest15650-21latency22:30:172
3078399170,2cyclictest15650-21latency22:30:172
3078399170,1cyclictest0-21swapper/200:25:152
3078399170,16cyclictest4591-21ls00:05:202
3078399170,16cyclictest30512-21chrt22:56:272
3078399170,16cyclictest30283-21threads21:00:232
3078399170,16cyclictest28471-21proc_pri20:00:222
3078399170,16cyclictest26153-21chrt21:50:212
3078399170,16cyclictest23993-21sort22:45:172
3078399170,16cyclictest23051-21/usr/sbin/munin20:50:142
3078399170,16cyclictest22597-21tune2fs21:45:152
3078399170,16cyclictest13897-21munin-run20:35:002
3078399170,16cyclictest0-21swapper/219:30:172
3078399170,16cyclictest0-21swapper/200:15:212
3078399170,15cyclictest20383-21cpuspeed_turbos00:35:142
30778991715,1cyclictest92332sleep100:15:071
30778991715,1cyclictest21-21ksoftirqd/123:35:021
30778991715,1cyclictest0-21swapper/120:50:151
30778991714,2cyclictest9195-21/usr/sbin/munin22:20:211
30778991714,2cyclictest455-21plymouthd23:12:331
30778991714,2cyclictest399-20systemd-journal20:04:551
30778991714,2cyclictest3985-21H222:10:211
30778991714,2cyclictest25993-21ntpq23:45:181
30778991714,2cyclictest1829-21systemd-journal22:15:011
30778991714,2cyclictest14394-21cut22:30:011
30778991714,2cyclictest1377-21lxd19:19:571
30778991714,2cyclictest1351-21lxd21:54:501
30778991714,2cyclictest11273-21date20:30:011
3077899171,1cyclictest153502chrt23:29:261
3077899171,15cyclictest0-21swapper/100:21:121
3077899170,2cyclictest441-21cpuspeed_turbos00:00:121
3077899170,2cyclictest28909-21expr22:55:131
3077899170,2cyclictest2872-21systemd-logind20:30:511
3077899170,2cyclictest28383-21munin-plugin-st21:00:011
3077899170,2cyclictest18078-21fschecks_time22:35:141
3077899170,2cyclictest16090-21nfsd400:25:211
3077899170,2cyclictest0-21swapper/120:45:191
3077899170,1cyclictest16500-21cpuspeed_turbos21:35:151
3077899170,16cyclictest9159-21run-parts23:15:191
3077899170,16cyclictest4931-21grep21:15:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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