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2026-01-12 - 06:32
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Mon Jan 12, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14607992424,0cyclictest0-21swapper/120:45:151
14607992421,2cyclictest3874-21pzem20:40:221
1460999220,21cyclictest843-21systemd-network22:09:212
1460799220,18cyclictest0-21swapper/123:05:341
1460699220,21cyclictest843-21systemd-network19:17:110
1460799210,3cyclictest0-21swapper/121:14:261
1460799210,20cyclictest843-21systemd-network22:39:141
1460799210,20cyclictest0-21swapper/120:25:181
1460799200,19cyclictest25225-21latency_hist21:20:001
14606992018,1cyclictest0-21swapper/021:05:210
14606992016,3cyclictest0-21swapper/020:52:060
14606992014,3cyclictest0-21swapper/000:25:000
14609991919,0cyclictest0-21swapper/221:05:212
14609991916,2cyclictest6544-21mailstats23:35:212
1460999190,2cyclictest2333-21grep20:40:152
1460999190,1cyclictest0-21swapper/200:05:002
1460999190,18cyclictest3983-21H222:10:212
1460999190,16cyclictest3989-21H222:10:212
1460999190,16cyclictest3985-21H222:10:212
1460999190,16cyclictest3985-21H222:10:212
1460999190,16cyclictest3979-21H222:10:212
1460999190,15cyclictest0-21swapper/220:30:242
1460799192,2cyclictest14284-21cat23:50:131
1460799192,2cyclictest10499-21cstates21:50:111
1460799192,16cyclictest0-21swapper/121:59:431
1460799192,15cyclictest0-21swapper/121:20:151
14607991917,1cyclictest21-21ksoftirqd/120:32:011
14607991917,1cyclictest0-21swapper/122:50:211
14607991916,2cyclictest16448-21sed22:55:191
14607991916,1cyclictest0-21swapper/121:39:331
14607991911,7cyclictest843-21systemd-network22:48:301
1460799190,18cyclictest3185-21latency_hist22:35:001
1460699193,2cyclictest18143-21expr23:00:130
14606991917,1cyclictest3976-21H222:10:210
14606991917,1cyclictest3976-21H222:10:210
14606991915,1cyclictest0-21swapper/021:15:050
1460699190,2cyclictest29911-21latency_hist22:25:010
1460699190,16cyclictest4099-21H222:10:210
1460699190,16cyclictest4035-21H222:10:210
1460699190,16cyclictest3987-21H222:10:210
1460699190,16cyclictest3981-21H222:10:210
1460999183,1cyclictest0-21swapper/221:13:072
1460999182,15cyclictest5495-21mktemp20:45:022
1460999182,15cyclictest28-21ksoftirqd/222:48:242
14609991816,1cyclictest28-21ksoftirqd/223:17:142
14609991816,1cyclictest28-21ksoftirqd/221:50:132
14609991816,1cyclictest0-21swapper/219:21:392
14609991815,2cyclictest10760-21cut20:55:002
14609991814,3cyclictest9423-21wc23:40:202
14609991814,3cyclictest3991-21H222:10:212
14609991814,3cyclictest3981-21H222:10:212
14609991814,3cyclictest0-21swapper/220:14:362
14609991813,2cyclictest3983-21H222:10:212
14609991811,6cyclictest0-21swapper/220:56:412
1460999180,17cyclictest4099-21H222:10:212
1460999180,17cyclictest3987-21H222:10:212
1460999180,17cyclictest21304-21idleruntime20:15:152
1460799182,1cyclictest12148-21uname23:45:181
1460799182,1cyclictest0-21swapper/123:25:141
1460799182,15cyclictest32744-21apache_volume19:40:111
1460799182,15cyclictest30688-21latency_hist21:30:011
1460799182,15cyclictest30616-21timerwakeupswit23:20:211
1460799182,15cyclictest26089-21cpuspeed_turbos23:15:131
1460799182,15cyclictest0-21swapper/121:07:451
1460799182,15cyclictest0-21swapper/120:00:201
1460799182,15cyclictest0-21swapper/100:10:131
14607991816,1cyclictest68862sleep121:42:251
14607991815,1cyclictest0-21swapper/100:26:551
14607991814,3cyclictest27634-21smartctl19:30:191
14607991814,3cyclictest0-21swapper/121:01:121
1460799181,2cyclictest23467-21pzem_voltage00:05:201
1460799181,2cyclictest13573-21date21:00:021
1460799181,2cyclictest0-21swapper/122:05:201
14607991812,3cyclictest25894-21cat23:15:011
1460799180,4cyclictest0-21swapper/120:22:201
1460799180,2cyclictest3991-21H222:10:211
1460799180,2cyclictest3987-21H222:10:211
1460799180,1cyclictest0-21swapper/120:53:111
1460799180,17cyclictest9025-21sed00:39:001
1460799180,15cyclictest0-21swapper/123:40:201
1460799180,15cyclictest0-21swapper/119:10:131
1460699182,15cyclictest9-21ksoftirqd/019:13:580
1460699182,15cyclictest0-21swapper/021:13:210
14606991817,1cyclictest9-21ksoftirqd/019:27:180
14606991816,1cyclictest0-21swapper/023:48:420
14606991816,1cyclictest0-21swapper/023:26:010
14606991814,3cyclictest3989-21H222:10:210
14606991814,3cyclictest3983-21H222:10:210
14606991814,3cyclictest3979-21H222:10:210
14606991814,3cyclictest3976-21H222:10:210
14606991814,1cyclictest0-21swapper/022:10:150
14606991813,3cyclictest2955-21nfsd421:35:180
1460699180,4cyclictest0-21swapper/022:08:470
1460699180,2cyclictest3987-21H222:10:210
1460699180,17cyclictest3979-21H222:10:210
1460699180,17cyclictest0-21swapper/020:15:130
1460699180,15cyclictest4099-21H222:10:210
1460699180,15cyclictest3981-21H222:10:210
14609991715,1cyclictest0-21swapper/222:36:192
14609991715,1cyclictest0-21swapper/221:30:132
14609991714,2cyclictest4035-21H222:10:212
14609991714,2cyclictest3981-21H222:10:212
14609991714,2cyclictest3979-21H222:10:212
14609991714,2cyclictest30818-21ntp_offset19:35:192
14609991714,2cyclictest2390-21ls23:30:142
14609991714,2cyclictest1523-21lxd22:56:332
14609991714,2cyclictest1381-21sed19:40:162
14609991714,2cyclictest1-21systemd00:18:512
14609991713,3cyclictest1441-21sendmail-mta00:21:402
1460999171,15cyclictest4099-21H222:10:212
1460999171,15cyclictest0-21swapper/222:25:192
1460999170,2cyclictest4035-21H222:10:212
1460999170,2cyclictest3991-21H222:10:212
1460999170,2cyclictest3989-21H222:10:212
1460999170,2cyclictest3985-21H222:10:212
1460999170,2cyclictest3985-21H222:10:212
1460999170,2cyclictest3983-21H222:10:212
1460999170,2cyclictest3976-21H222:10:212
1460999170,2cyclictest22704-21cat22:10:132
1460999170,2cyclictest18500-21cat19:15:142
1460999170,1cyclictest0-21swapper/223:20:102
1460999170,16cyclictest8109-21ntpq22:40:182
1460999170,16cyclictest3991-21H222:10:212
1460999170,16cyclictest3987-21H222:10:212
1460999170,16cyclictest3983-21H222:10:212
1460999170,16cyclictest3979-21H222:10:212
1460999170,16cyclictest3979-21H222:10:212
1460999170,16cyclictest26475-21pzem_power00:10:202
1460999170,16cyclictest24520-21nfsd420:20:172
1460999170,16cyclictest13653-21cut23:50:012
1460999170,16cyclictest13531-21cpuspeed_turbos21:55:122
1460999170,16cyclictest10151-21lxd19:46:492
1460999170,16cyclictest0-21swapper/219:25:152
14607991714,2cyclictest23511-21awk19:25:111
14607991714,2cyclictest18114-21cat23:00:131
14607991714,2cyclictest0-21swapper/123:30:141
1460799171,2cyclictest8000-21expr22:40:171
1460799171,15cyclictest455-21plymouthd19:35:051
1460799170,2cyclictest5264-21cat19:45:211
1460799170,2cyclictest5035-21grep23:35:131
1460799170,2cyclictest3981-21H222:10:211
1460799170,2cyclictest29053-21ntp_offset00:15:181
1460799170,2cyclictest1485-21snapd00:20:081
1460799170,16cyclictest9686-21sed19:55:151
1460799170,16cyclictest455-21plymouthd22:25:141
1460799170,16cyclictest3844-21taskset00:30:111
1460799170,16cyclictest3844-21taskset00:30:111
1460799170,16cyclictest28520-21kernelversion22:20:161
1460799170,16cyclictest22750-21fschecks_count22:10:141
1460799170,16cyclictest22016-21awk19:20:201
1460799170,16cyclictest21331-21basename20:15:151
1460799170,16cyclictest19120-21sed20:10:231
1460799170,16cyclictest18187-21grep19:15:141
1460799170,16cyclictest17440-21/usr/sbin/munin22:00:171
1460799170,16cyclictest14484-21/usr/sbin/munin20:05:121
1460799170,16cyclictest0-21swapper/120:35:151
14606991715,1cyclictest3987-21H222:10:210
14606991715,1cyclictest0-21swapper/021:40:210
14606991714,2cyclictest3985-21H222:10:210
14606991714,2cyclictest17667-21nfsd423:55:180
1460699171,15cyclictest0-21swapper/021:27:060
1460699171,15cyclictest0-21swapper/020:09:370
1460699170,2cyclictest4842-21http20:45:010
1460699170,2cyclictest3991-21H222:10:210
1460699170,2cyclictest3989-21H222:10:210
1460699170,2cyclictest10653-21munin-run23:45:010
1460699170,2cyclictest0-21swapper/000:05:000
1460699170,1cyclictest3991-21H222:10:210
1460699170,1cyclictest3976-21H222:10:210
1460699170,16cyclictest8021-21grep22:40:170
1460699170,16cyclictest5100-21systemctl19:45:200
1460699170,16cyclictest4410-21df22:35:160
1460699170,16cyclictest3976-21H222:10:210
1460699170,16cyclictest3976-21H222:10:210
1460699170,16cyclictest32479-21anvil22:31:230
1460699170,16cyclictest31083-21/usr/sbin/munin21:30:160
1460699170,16cyclictest29499-21idleruntime23:20:150
1460699170,16cyclictest27939-21ls00:15:120
1460699170,16cyclictest25636-21munin-run20:25:000
1460699170,16cyclictest1484-21snapd19:52:390
1460699170,16cyclictest0-21swapper/023:51:270
14609991614,1cyclictest25373-21expr22:15:152
14609991614,1cyclictest0-21swapper/223:50:112
14609991614,1cyclictest0-21swapper/221:25:122
1460999160,1cyclictest0-21swapper/219:50:132
1460999160,15cyclictest0-21swapper/222:20:172
1460799160,1cyclictest0-21swapper/123:55:141
1460799160,1cyclictest0-21swapper/122:15:121
1460799160,15cyclictest0-21swapper/119:50:111
14606991614,1cyclictest0-21swapper/020:45:020
14606991613,2cyclictest3985-21H222:10:210
14606991613,1cyclictest0-21swapper/020:10:220
1460699161,1cyclictest109882sleep020:55:070
1460699160,2cyclictest14569-21if_enp1s021:00:150
1460699160,1cyclictest0-21swapper/022:15:180
1460699160,15cyclictest839-21cpuspeed_turbos00:25:130
1460699160,15cyclictest3981-21H222:10:210
1460699160,15cyclictest240702chrt00:06:160
1460699160,15cyclictest0-21swapper/023:35:150
1460699160,15cyclictest0-21swapper/023:05:130
1460699160,15cyclictest0-21swapper/021:45:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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