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2026-04-17 - 07:28
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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 Fri Apr 17, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2401199260,25cyclictest0-21swapper/120:20:151
2400699252,18cyclictest0-21swapper/000:30:000
2400699252,18cyclictest0-21swapper/000:29:590
2401199210,3cyclictest0-21swapper/120:51:131
2401599200,17cyclictest0-21swapper/220:29:272
2401199204,1cyclictest0-21swapper/121:10:131
2401199202,3cyclictest0-21swapper/100:10:221
2401199202,17cyclictest0-21swapper/123:47:261
24011992016,3cyclictest0-21swapper/123:56:071
24006992016,3cyclictest9-21ksoftirqd/021:20:010
2400699200,19cyclictest426-21systemd-udevd23:40:520
2401599190,3cyclictest0-21swapper/219:13:202
2401199193,15cyclictest4154-21cat22:20:161
2401199192,3cyclictest0-21swapper/119:22:561
2401199192,2cyclictest31651-21cat23:10:131
2401199192,16cyclictest17498-21cat22:45:121
2401199192,16cyclictest0-21swapper/123:37:561
2401199192,16cyclictest0-21swapper/120:47:131
2401199191,4cyclictest26407-21sort23:00:141
2401199190,17cyclictest12609-21cpuspeed_turbos19:45:151
24006991917,1cyclictest0-21swapper/000:11:340
2400699191,3cyclictest0-21swapper/021:40:450
24006991911,4cyclictest0-21swapper/023:08:400
2400699190,2cyclictest3981-21H222:10:210
2401599183,9cyclictest12725-21http23:34:592
2401599182,1cyclictest88082sleep219:36:532
2401599182,15cyclictest0-21swapper/220:43:142
24015991815,2cyclictest26345-21seq22:02:532
24015991814,3cyclictest4488-21cron21:25:002
24015991814,3cyclictest3987-21H222:10:212
2401599181,16cyclictest6993-21smtpd23:22:512
2401599180,17cyclictest0-21swapper/222:15:022
2401199182,15cyclictest17407-21expr00:38:591
24011991816,1cyclictest0-21swapper/122:54:401
24011991815,0cyclictest0-21swapper/119:34:541
2401199181,2cyclictest18301-21sh21:50:011
2401199181,16cyclictest4504-21cut23:20:011
2401199181,16cyclictest0-21swapper/122:09:011
2401199180,15cyclictest3987-21H222:10:211
2400699182,15cyclictest0-21swapper/020:25:140
24006991816,1cyclictest9-21ksoftirqd/021:35:080
24006991815,2cyclictest19629-21expr23:45:130
24006991814,3cyclictest0-21swapper/019:33:280
24006991814,2cyclictest4099-21H222:10:210
24006991813,3cyclictest0-21swapper/020:43:360
24006991813,3cyclictest0-21swapper/000:08:470
2400699181,2cyclictest15809-21smartctl22:40:180
2400699180,16cyclictest0-21swapper/023:25:140
24015991715,1cyclictest259002sleep220:07:222
24015991715,1cyclictest0-21swapper/222:45:012
24015991715,1cyclictest0-21swapper/221:50:152
24015991715,1cyclictest0-21swapper/221:12:212
24015991715,1cyclictest0-21swapper/220:10:112
24015991714,2cyclictest9202-21cron19:40:012
24015991714,2cyclictest7622-21/usr/sbin/munin21:30:212
24015991714,2cyclictest5235-21nfsd419:30:182
24015991714,2cyclictest3981-21H222:10:212
24015991714,2cyclictest2604-21processes00:10:202
24015991714,2cyclictest16755-21snapd23:57:482
24015991714,2cyclictest15866-21nvmesmart_nvme020:45:162
24015991714,2cyclictest1377-21lxd22:36:492
24015991713,3cyclictest17800-21cron19:55:012
2401599171,2cyclictest21728-21expr21:55:132
2401599171,2cyclictest19006-21timerwakeupswit22:45:212
2401599171,15cyclictest10043-21nfsd420:35:192
2401599171,15cyclictest0-21swapper/223:42:342
2401599170,2cyclictest952-21users21:15:212
2401599170,2cyclictest6972-21kernelversion22:25:182
2401599170,2cyclictest5560-21ntp_offset00:15:182
2401599170,2cyclictest3976-21H222:10:212
2401599170,2cyclictest27244-21apt-key19:15:102
2401599170,2cyclictest17795-21cpuspeed_turbos20:50:142
2401599170,2cyclictest15070-21/usr/sbin/munin00:35:102
2401599170,16cyclictest7507-21cnf-update-db20:30:202
2401599170,16cyclictest6330-21smartctl21:25:172
2401599170,16cyclictest30587-21expr00:05:132
2401599170,16cyclictest28047-21cron23:05:012
2401599170,16cyclictest21794-21cron23:50:002
2401599170,16cyclictest15422-21chrt21:43:092
2401599170,16cyclictest13307-21ls23:35:142
2401599170,16cyclictest1085-21gdbus22:55:092
2401599170,16cyclictest0-21swapper/223:04:572
2401199172,1cyclictest22174-21http_loadtime21:55:151
24011991714,2cyclictest9957-21munin-run21:35:011
24011991714,2cyclictest3983-21H222:10:211
24011991714,2cyclictest3414-21master21:37:261
24011991714,2cyclictest15945-21lxd20:36:491
24011991714,2cyclictest12973-21fschecks_count00:30:161
24011991714,2cyclictest12944-21nfsd420:40:181
2401199171,2cyclictest30254-21cat22:10:131
2401199171,15cyclictest4035-21H222:10:211
2401199170,2cyclictest6320-21ls22:25:141
2401199170,2cyclictest6267-21ntp_states23:20:191
2401199170,2cyclictest4918-21apache_accesses21:25:091
2401199170,2cyclictest2777-21expr20:25:131
2401199170,2cyclictest20652-21store20:00:021
2401199170,2cyclictest18364-21cstates19:55:131
2401199170,2cyclictest15096-21apache_processe19:50:121
2401199170,2cyclictest12444-21proxymap23:32:471
2401199170,1cyclictest4035-21H222:10:211
2401199170,1cyclictest0-21swapper/121:15:151
2401199170,16cyclictest888-21http_loadtime22:15:151
2401199170,16cyclictest8001-21cat23:25:141
2401199170,16cyclictest455-21plymouthd20:10:191
2401199170,16cyclictest28460-21/usr/sbin/munin23:05:151
2401199170,16cyclictest26980-21https19:15:021
2401199170,16cyclictest26267-21cat21:05:151
2401199170,16cyclictest25152-21latency22:00:171
2401199170,16cyclictest20287-21taskset20:55:021
2401199170,16cyclictest20287-21taskset20:55:021
2401199170,16cyclictest18854-21cpuspeed_turbos21:50:131
2401199170,16cyclictest1348-21lxd19:40:471
2401199170,16cyclictest10381-21/usr/sbin/munin22:30:201
2401199170,15cyclictest23924-21switchtime23:50:231
24006991715,1cyclictest0-21swapper/020:12:020
24006991714,2cyclictest8956-21cpuspeed_turbos20:35:130
24006991714,2cyclictest3987-21H222:10:210
24006991714,2cyclictest3975-21cat21:20:230
24006991714,2cyclictest3341-21expr22:20:140
24006991714,2cyclictest19523-21/usr/sbin/munin20:50:220
24006991714,2cyclictest1856-21systemd-udevd23:58:520
24006991714,2cyclictest1127-21sshd21:34:220
24006991714,2cyclictest11082-21/usr/sbin/munin19:40:200
24006991714,2cyclictest10312-21apache_processe23:30:100
2400699170,2cyclictest1856-21systemd-udevd23:10:520
2400699170,2cyclictest16731-21date21:45:150
2400699170,2cyclictest15587-21missed_timers20:45:150
2400699170,2cyclictest1526-21lxd19:48:470
2400699170,2cyclictest0-21swapper/022:00:000
2400699170,1cyclictest0-21swapper/019:26:360
2400699170,16cyclictest455-21plymouthd22:08:590
2400699170,16cyclictest3985-21H222:10:210
2400699170,16cyclictest3980-21H222:10:210
2400699170,16cyclictest352-21jbd2/nvme0n1p2-21:10:010
2400699170,16cyclictest30741-21kernelversion22:10:170
2400699170,16cyclictest30127-21/usr/sbin/munin19:20:190
2400699170,16cyclictest29677-21cat20:15:130
2400699170,16cyclictest21018-21grep22:50:180
2400699170,16cyclictest16755-21snapd23:50:180
2400699170,16cyclictest15103-21apt-get19:50:130
24015991614,1cyclictest0-21swapper/222:10:062
24015991614,1cyclictest0-21swapper/222:05:122
24015991614,1cyclictest0-21swapper/221:40:012
24015991614,1cyclictest0-21swapper/221:05:152
24015991614,1cyclictest0-21swapper/200:25:142
24015991614,1cyclictest0-21swapper/200:25:142
24015991613,2cyclictest32147-21/usr/sbin/munin20:20:112
2401599160,2cyclictest23049-21/usr/sbin/munin21:00:132
2401599160,1cyclictest0-21swapper/222:20:112
2401599160,1cyclictest0-21swapper/220:00:022
2401599160,1cyclictest0-21swapper/200:20:132
2401599160,15cyclictest8831-21ls22:30:142
2401599160,15cyclictest30566-21expr19:20:132
2401599160,15cyclictest15992-21apache_accesses21:45:112
2401599160,15cyclictest0-21swapper/223:25:142
2401599160,15cyclictest0-21swapper/223:15:132
2401599160,15cyclictest0-21swapper/223:10:142
2401599160,15cyclictest0-21swapper/222:50:142
2401599160,15cyclictest0-21swapper/220:55:182
2401599160,15cyclictest0-21swapper/220:55:172
2401599160,15cyclictest0-21swapper/220:15:152
2401599160,15cyclictest0-21swapper/200:30:142
24011991615,1cyclictest21-21ksoftirqd/121:03:591
24011991614,1cyclictest11496-21apache_volume22:35:121
24011991614,1cyclictest0-21swapper/123:40:171
24011991614,1cyclictest0-21swapper/122:40:101
24011991614,1cyclictest0-21swapper/121:41:521
24011991614,1cyclictest0-21swapper/120:05:141
24011991614,1cyclictest0-21swapper/100:05:161
2401199160,1cyclictest1035-21thermald19:25:191
2401199160,1cyclictest0-21swapper/100:15:141
2401199160,15cyclictest2006-21grep21:20:141
2401199160,15cyclictest0-21swapper/120:15:181
2401199160,15cyclictest0-21swapper/100:30:001
2401199160,15cyclictest0-21swapper/100:30:001
24006991614,1cyclictest0-21swapper/023:35:120
24006991614,1cyclictest0-21swapper/023:15:170
24006991614,1cyclictest0-21swapper/023:00:130
24006991614,1cyclictest0-21swapper/022:30:210
24006991614,1cyclictest0-21swapper/022:15:160
24006991614,1cyclictest0-21swapper/021:25:120
24006991614,1cyclictest0-21swapper/021:10:140
24006991614,1cyclictest0-21swapper/020:55:110
24006991614,1cyclictest0-21swapper/020:55:100
24006991614,1cyclictest0-21swapper/020:00:130
24006991613,2cyclictest6335-21wc23:20:190
2400699161,1cyclictest3986-21H222:10:210
2400699160,2cyclictest3990-21H222:10:210
2400699160,2cyclictest15233-21expr00:35:130
2400699160,2cyclictest11587-21cpuspeed_turbos22:35:140
2400699160,1cyclictest0-21swapper/020:30:010
2400699160,1cyclictest0-21swapper/020:20:160
2400699160,1cyclictest0-21swapper/000:15:140
2400699160,15cyclictest6923-21apache_accesses00:20:110
2400699160,15cyclictest27276-21sed19:15:100
2400699160,15cyclictest23782-21/usr/sbin/munin20:05:130
2400699160,15cyclictest18347-21grep22:45:170
2400699160,15cyclictest1085-21gdbus19:55:210
2400699160,15cyclictest0-21swapper/022:55:180
2400699160,15cyclictest0-21swapper/000:30:140
24015991514,1cyclictest0-21swapper/223:50:192
2401599150,14cyclictest0-21swapper/200:00:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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