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2026-04-12 - 08:29
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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 12, 2026 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2719899280,5cyclictest0-21swapper/021:06:540
27198992620,5cyclictest12071-21perf19:40:010
27198992521,3cyclictest0-21swapper/023:40:170
2719899243,1cyclictest0-21swapper/022:30:150
2719899240,4cyclictest0-21swapper/023:50:250
2720899236,16cyclictest1256-21ntp_kernel_pll_20:15:192
2719899231,16cyclictest11226-21nvmesmart_nvme000:20:170
2719899222,2cyclictest4141-21cut00:10:010
2719899220,16cyclictest15438-21tr00:30:150
27208992118,2cyclictest880-21rs:main2
2720899210,18cyclictest0-21swapper/219:45:112
2720299214,16cyclictest0-21swapper/123:45:301
2719899210,2cyclictest10619-21sshd22:27:180
2719899210,16cyclictest32134-21munin-plugin-st22:10:010
2719899210,16cyclictest2293-21fschecks_time21:15:160
2720899200,1cyclictest0-21swapper/221:08:252
27202992016,3cyclictest0-21swapper/120:39:561
27202992014,3cyclictest30112-21fschecks_count20:10:151
2720299200,19cyclictest843-21systemd-network19:26:561
27198992015,1cyclictest4036-21H222:10:210
27198992014,5cyclictest0-21swapper/020:51:080
2720899194,1cyclictest0-21swapper/220:41:172
2720899192,16cyclictest0-21swapper/221:41:082
2720899192,15cyclictest0-21swapper/221:46:362
27208991915,3cyclictest0-21swapper/222:48:272
2720899190,18cyclictest843-21systemd-network23:09:232
2720899190,18cyclictest0-21swapper/200:21:582
2720299193,15cyclictest0-21swapper/119:40:011
2720299192,16cyclictest26166-21ps23:50:201
27202991917,1cyclictest0-21swapper/121:52:521
27202991914,3cyclictest30099-21fschecks_time22:05:161
2720299190,3cyclictest0-21swapper/121:26:341
2720299190,3cyclictest0-21swapper/119:34:281
2720299190,18cyclictest0-21swapper/121:55:181
2719899190,18cyclictest24687-21nfsd420:00:170
27208991816,1cyclictest0-21swapper/223:10:202
27208991814,3cyclictest0-21swapper/223:20:152
2720899180,17cyclictest0-21swapper/219:25:212
2720299182,15cyclictest2542-21grep21:15:181
2720299182,15cyclictest21-21ksoftirqd/120:40:141
2720299182,15cyclictest0-21swapper/123:23:181
2720299182,15cyclictest0-21swapper/120:55:181
2720299182,15cyclictest0-21swapper/120:55:181
27202991816,1cyclictest0-21swapper/123:41:361
27202991812,3cyclictest0-21swapper/100:30:211
2720299181,16cyclictest28121-21munin-plugin-st21:05:011
2720299180,16cyclictest3402-21dpkg19:25:011
2719899182,1cyclictest22840-21swap21:50:210
27198991816,1cyclictest0-21swapper/022:20:200
27198991815,3cyclictest0-21swapper/020:55:160
27198991815,3cyclictest0-21swapper/020:55:160
27208991716,1cyclictest28-21ksoftirqd/222:00:022
27208991715,1cyclictest0-21swapper/221:20:162
27208991715,1cyclictest0-21swapper/221:15:192
27208991715,1cyclictest0-21swapper/219:20:162
27208991714,2cyclictest7902-21anvil22:22:192
27208991714,2cyclictest6280-21expr20:25:142
27208991714,2cyclictest28209-21/usr/sbin/munin23:00:122
27208991714,2cyclictest28154-21expr23:55:142
27208991714,2cyclictest22145-21date20:55:002
27208991714,2cyclictest18716-21which19:50:152
27208991714,2cyclictest1724-21/usr/sbin/munin22:10:222
27208991714,2cyclictest12811-21switchtime20:35:222
27208991714,2cyclictest1079-21cups-browsed20:45:222
27208991714,2cyclictest10569-21wc19:35:162
2720899171,1cyclictest10160-21switchtime20:30:232
2720899171,1cyclictest10160-21switchtime20:30:232
2720899171,15cyclictest24695-21cat21:00:002
2720899171,15cyclictest24695-21cat21:00:002
2720899170,2cyclictest870-21systemd-logind22:06:522
2720899170,2cyclictest5224-21fschecks_count23:15:152
2720899170,2cyclictest31738-21needreboot00:00:182
2720899170,2cyclictest16233-21http_loadtime23:35:152
2720899170,2cyclictest16103-21timerandwakeup22:35:222
2720899170,16cyclictest8608-21pzem00:15:202
2720899170,16cyclictest7842-21latency19:30:162
2720899170,16cyclictest455-21plymouthd22:50:132
2720899170,16cyclictest3236-21expr20:20:122
2720899170,16cyclictest32204-21sed21:10:182
2720899170,16cyclictest25228-21https21:00:012
2720899170,16cyclictest24064-21df_inode20:00:142
2720899170,16cyclictest21331-21cut21:50:142
2720899170,16cyclictest15592-21expr00:30:152
2720899170,16cyclictest1517-21lxd23:26:342
27202991714,2cyclictest26937-21ps22:55:191
27202991714,2cyclictest26934-21wc22:00:141
27202991714,2cyclictest22359-21perf22:50:001
27202991714,2cyclictest2174-21needreboot00:05:171
27202991714,2cyclictest20502-21sendmail00:40:001
27202991714,2cyclictest15708-21cpuspeed_turbos23:35:131
27202991714,2cyclictest12537-21/usr/sbin/munin00:25:181
27202991714,2cyclictest12537-21/usr/sbin/munin00:25:181
27202991714,2cyclictest1127-21sshd20:18:541
27202991714,2cyclictest10714-21/usr/sbin/munin21:30:151
2720299171,1cyclictest51132chrt22:16:511
2720299171,1cyclictest51132chrt22:16:511
2720299171,1cyclictest0-21swapper/122:35:181
2720299171,1cyclictest0-21swapper/121:05:181
2720299171,15cyclictest23343-21/usr/sbin/munin22:50:141
2720299171,15cyclictest1291-21nfsd422:10:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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