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2026-04-12 - 07:15
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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 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
2720299171,15cyclictest0-21swapper/120:00:141
2720299170,2cyclictest8026-21cat00:15:161
2720299170,2cyclictest5244-21fschecks_count23:15:151
2720299170,2cyclictest3351-21lxd23:06:491
2720299170,2cyclictest3229-21cat20:20:121
2720299170,2cyclictest29767-21sed23:55:221
2720299170,2cyclictest2328-21if_eno123:10:161
2720299170,2cyclictest12860-21nfsd422:30:191
2720299170,16cyclictest29594-21ntpq23:00:181
2720299170,16cyclictest18931-21kernelversion19:50:171
2720299170,16cyclictest1377-21lxd21:10:491
2720299170,16cyclictest13140-21expr21:35:141
2720299170,16cyclictest12963-21expr19:40:131
2720299170,16cyclictest11247-21apt-config22:30:011
2720299170,16cyclictest0-21swapper/100:00:221
2719899176,10cyclictest0-21swapper/019:45:150
2719899172,6cyclictest0-21swapper/019:25:010
27198991715,1cyclictest52812sleep022:18:580
27198991715,1cyclictest52812sleep022:18:580
27198991715,1cyclictest0-21swapper/021:00:240
27198991714,2cyclictest9046-21chrt19:33:440
27198991714,2cyclictest6000-21cat20:25:140
27198991714,2cyclictest5936-21systemctl00:10:190
27198991714,2cyclictest3954-21VM22:10:210
27198991714,2cyclictest21441-21nvmesmart_nvme022:45:200
27198991714,1cyclictest0-21swapper/000:35:140
2719899171,1cyclictest0-21swapper/000:02:200
2719899171,15cyclictest28323-21cpuspeed_turbos23:00:130
2719899170,2cyclictest31187-21grep21:10:140
2719899170,16cyclictest9784-21grep20:30:200
2719899170,16cyclictest9784-21grep20:30:200
2719899170,16cyclictest9066-21sendmail-mta00:16:070
2719899170,16cyclictest27940-21cstates19:10:130
2719899170,16cyclictest25913-21postgres21:55:440
2719899170,16cyclictest17243-21expr20:45:150
2719899170,16cyclictest16749-21snapd20:08:000
2719899170,16cyclictest16592-21ionclean22:38:590
2719899170,16cyclictest15883-21cpuspeed_turbos21:40:130
2719899170,16cyclictest14551-21expr20:40:140
2719899170,16cyclictest1290-21kerneloops22:10:170
2719899170,16cyclictest10047-21/usr/sbin/munin23:25:200
27208991614,1cyclictest5305-21sed00:10:152
27208991614,1cyclictest0-21swapper/223:50:022
27208991614,1cyclictest0-21swapper/222:40:142
27208991614,1cyclictest0-21swapper/222:40:142
27208991614,1cyclictest0-21swapper/222:29:502
27208991614,1cyclictest0-21swapper/219:55:152
27208991614,1cyclictest0-21swapper/219:40:172
27208991614,1cyclictest0-21swapper/219:10:182
27208991614,1cyclictest0-21swapper/200:25:212
27208991614,1cyclictest0-21swapper/200:25:212
27208991613,2cyclictest30090-21df20:10:152
27208991613,2cyclictest28050-21ntp_kernel_err22:00:172
27208991613,2cyclictest25525-21cpu22:55:132
27208991613,2cyclictest13503-21hddtemp_smartct23:30:142
27208991613,2cyclictest10906-21python322:30:022
2720899160,2cyclictest26670-21expr20:05:142
2720899160,15cyclictest1640-21/usr/sbin/munin00:05:142
2720899160,15cyclictest12809-21chrt21:35:032
2720899160,15cyclictest0-21swapper/223:40:182
2720899160,15cyclictest0-21swapper/222:15:212
2720899160,15cyclictest0-21swapper/222:15:212
2720899160,15cyclictest0-21swapper/219:15:122
2720899160,15cyclictest0-21swapper/200:35:162
27202991614,1cyclictest216922chrt20:52:171
27202991614,1cyclictest0-21swapper/120:30:161
27202991614,1cyclictest0-21swapper/120:30:161
27202991614,1cyclictest0-21swapper/119:10:201
27202991614,1cyclictest0-21swapper/100:20:151
27202991613,2cyclictest4582-21tr00:10:121
2720299160,1cyclictest21176-21expr19:55:151
2720299160,15cyclictest27531-21grep20:05:191
2720299160,15cyclictest17635-21timerwakeupswit21:40:221
2720299160,15cyclictest13095-21expr23:30:131
2720299160,15cyclictest0-21swapper/123:25:131
2720299160,15cyclictest0-21swapper/122:20:131
2720299160,15cyclictest0-21swapper/121:45:151
2720299160,15cyclictest0-21swapper/121:20:151
2720299160,15cyclictest0-21swapper/120:45:151
2720299160,15cyclictest0-21swapper/120:25:141
2720299160,15cyclictest0-21swapper/119:45:141
2720299160,15cyclictest0-21swapper/119:15:101
27198991614,1cyclictest8336-21latency21:25:180
27198991614,1cyclictest0-21swapper/023:10:150
27198991614,1cyclictest0-21swapper/022:55:160
27198991614,1cyclictest0-21swapper/021:45:160
27198991614,1cyclictest0-21swapper/021:35:140
27198991614,1cyclictest0-21swapper/020:35:140
27198991614,1cyclictest0-21swapper/020:15:140
27198991614,1cyclictest0-21swapper/019:55:140
27198991614,1cyclictest0-21swapper/019:50:140
27198991614,1cyclictest0-21swapper/019:15:120
2719899160,2cyclictest21200-21sed23:45:020
2719899160,2cyclictest12830-21cat19:40:130
2719899160,2cyclictest0-21swapper/021:30:190
2719899160,1cyclictest0-21swapper/022:00:140
2719899160,15cyclictest5805-21nfsd423:15:190
2719899160,15cyclictest4194-21ls19:25:140
2719899160,15cyclictest3389-21sh20:20:120
2719899160,15cyclictest17477-21cpuspeed_turbos22:40:130
2719899160,15cyclictest17477-21cpuspeed_turbos22:40:130
2719899160,15cyclictest15495-21munin-node23:35:100
2719899160,15cyclictest13015-21expr23:30:130
2719899160,15cyclictest0-21swapper/023:05:150
2719899160,15cyclictest0-21swapper/022:50:130
2719899160,15cyclictest0-21swapper/021:20:170
2719899160,15cyclictest0-21swapper/020:10:010
2719899160,15cyclictest0-21swapper/000:25:140
2719899160,15cyclictest0-21swapper/000:25:140
27208991513,1cyclictest0-21swapper/223:47:112
2720899150,14cyclictest0-21swapper/221:30:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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