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2026-05-02 - 04:07
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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 Sat May 02, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5179993432,1cyclictest0-21swapper/122:00:121
5179993331,2cyclictest0-21swapper/121:23:561
5179992525,0cyclictest0-21swapper/123:45:181
5179992422,1cyclictest3157-21mii-tool21:00:151
5179992313,9cyclictest870-21systemd-logind00:38:511
517899236,2cyclictest23107-21latency_hist00:29:590
5180992219,2cyclictest29972-21sed20:50:152
5178992113,4cyclictest0-21swapper/021:25:010
5180992018,1cyclictest0-21swapper/222:35:152
517899205,1cyclictest9-21ksoftirqd/019:54:340
517899204,15cyclictest0-21swapper/023:27:490
517899204,15cyclictest0-21swapper/020:42:020
517899203,2cyclictest4071-21date23:55:010
5178992016,3cyclictest27499-21sh19:50:010
5178992016,3cyclictest27499-21sh19:50:000
518099193,1cyclictest0-21swapper/223:24:302
518099190,18cyclictest4035-21H222:10:212
518099190,18cyclictest14550-21snapd23:32:572
5179991914,4cyclictest399-20systemd-journal21:37:331
5179991913,5cyclictest426-21systemd-udevd23:38:511
517999190,3cyclictest0-21swapper/121:07:341
517999190,1cyclictest0-21swapper/123:00:151
517999190,18cyclictest426-21systemd-udevd20:34:521
517899199,0cyclictest0-21swapper/021:10:150
5178991917,1cyclictest8916-21timerwakeupswit20:10:210
517899191,17cyclictest0-21swapper/021:10:000
517899190,1cyclictest0-21swapper/022:45:120
517899190,18cyclictest0-21swapper/021:35:160
518099182,1cyclictest0-21swapper/219:50:052
518099182,15cyclictest0-21swapper/220:28:262
5180991817,1cyclictest0-21swapper/223:00:012
5180991815,1cyclictest0-21swapper/223:50:332
5180991814,3cyclictest32140-21pzem_voltage21:50:192
5180991814,3cyclictest0-21swapper/223:15:182
518099181,16cyclictest31929-21nfsd419:55:182
518099181,16cyclictest25963-21if_enp1s021:40:152
518099181,15cyclictest3983-21H222:10:212
518099180,2cyclictest4035-21H222:10:212
518099180,2cyclictest4035-21H222:10:212
518099180,17cyclictest26599-21nvmesmart_nvme019:45:172
518099180,17cyclictest26599-21nvmesmart_nvme019:45:172
518099180,17cyclictest0-21swapper/222:00:142
518099180,15cyclictest0-21swapper/220:55:122
5179991817,1cyclictest21-21ksoftirqd/121:29:261
5179991816,1cyclictest0-21swapper/123:32:461
5179991815,2cyclictest1856-21systemd-udevd23:10:521
5179991814,3cyclictest0-21swapper/123:15:131
5179991814,2cyclictest10929-21https19:20:021
5179991814,2cyclictest10929-21https19:20:021
5179991813,4cyclictest0-21swapper/119:50:151
517999181,16cyclictest22056-21grep20:35:171
517999181,16cyclictest0-21swapper/100:26:151
517999180,3cyclictest3983-21H222:10:211
517999180,17cyclictest6904-21nvmesmart_nvme019:10:191
517999180,17cyclictest399-20systemd-journal00:20:011
517999180,17cyclictest3983-21H222:10:211
517999180,17cyclictest3983-21H222:10:211
517999180,16cyclictest4035-21H222:10:211
517899182,15cyclictest27278-21ls20:45:170
517899182,15cyclictest0-21swapper/023:40:120
5178991815,2cyclictest4035-21H222:10:210
5178991815,1cyclictest0-21swapper/020:30:130
517899180,1cyclictest0-21swapper/023:32:290
517899180,17cyclictest0-21swapper/022:05:120
517899180,16cyclictest2007-21systemd-journal22:50:020
5180991715,1cyclictest3983-21H222:10:212
5180991715,1cyclictest140692sleep219:25:032
5180991715,1cyclictest0-21swapper/222:10:162
5180991715,1cyclictest0-21swapper/221:45:122
5180991715,1cyclictest0-21swapper/220:40:132
5180991715,1cyclictest0-21swapper/200:35:122
5180991714,2cyclictest5856-21expr23:00:152
5180991714,2cyclictest3985-21H222:10:212
5180991714,2cyclictest3983-21H222:10:212
5180991714,2cyclictest27562-21nfsd422:40:162
5180991714,2cyclictest27319-21cron23:39:012
5180991714,2cyclictest22704-21chrt22:31:082
5180991714,2cyclictest2018-21latency21:55:172
5180991714,2cyclictest2018-21latency21:55:172
5180991714,1cyclictest0-21swapper/222:50:162
518099171,2cyclictest28722-21mii-tool23:40:152
518099170,2cyclictest8439-21apache_processe23:05:102
518099170,2cyclictest7617-21date22:05:152
518099170,2cyclictest3989-21H222:10:212
518099170,2cyclictest3983-21H222:10:212
518099170,2cyclictest21487-21vmstat23:25:232
518099170,2cyclictest18170-21nfsd419:30:182
518099170,2cyclictest15242-21/usr/sbin/munin22:20:192
518099170,2cyclictest13665-21basename23:15:002
518099170,2cyclictest13237-21fschecks_time00:10:142
518099170,1cyclictest0-21swapper/220:00:192
518099170,1cyclictest0-21swapper/200:00:212
518099170,16cyclictest843-21systemd-network21:36:582
518099170,16cyclictest6416-21latency_hist00:00:002
518099170,16cyclictest4099-21H222:10:212
518099170,16cyclictest3979-21H222:10:212
518099170,16cyclictest21100-21/usr/sbin/munin21:30:202
518099170,16cyclictest14650-21latency21:20:162
518099170,16cyclictest14500-21snapd20:35:432
518099170,16cyclictest13200-21cron21:20:002
518099170,16cyclictest13059-21expr20:20:132
518099170,16cyclictest12832-21expr22:15:132
518099170,16cyclictest11570-21cpuspeed_turbos19:20:112
518099170,16cyclictest11570-21cpuspeed_turbos19:20:102
518099170,15cyclictest0-21swapper/222:50:002
5179991715,1cyclictest21-21ksoftirqd/121:30:131
5179991714,2cyclictest8740-21expr21:10:131
5179991714,2cyclictest5601-21lxd22:56:481
5179991714,2cyclictest2872-21systemd-logind19:16:521
5179991714,2cyclictest25859-21tune2fs19:45:131
5179991714,2cyclictest25859-21tune2fs19:45:131
5179991714,2cyclictest2303-21nfsd423:50:151
5179991714,2cyclictest2086-21ls20:00:181
5179991714,2cyclictest15885-21tune2fs22:20:141
517999171,2cyclictest863-21avahi-daemon22:50:201
517999171,15cyclictest0-21swapper/120:15:141
517999170,2cyclictest3985-21H222:10:211
517999170,2cyclictest3689-21awk22:00:011
517999170,2cyclictest3689-21awk22:00:001
517999170,2cyclictest23492-21bounce00:30:021
517999170,2cyclictest18958-21sshd23:22:591
517999170,2cyclictest14495-21snapd19:27:571
517999170,2cyclictest13192-21tune2fs22:15:141
517999170,2cyclictest0-21swapper/122:36:211
517999170,16cyclictest863-21avahi-daemon22:45:181
517999170,16cyclictest3983-21H222:10:211
517999170,16cyclictest29109-21nfsd423:40:171
517999170,16cyclictest18424-21systemctl19:30:211
517999170,16cyclictest15945-21lxd00:00:351
517999170,16cyclictest1377-21lxd19:56:481
517999170,16cyclictest12067-21needreboot21:15:171
5178991715,1cyclictest0-21swapper/021:25:130
5178991714,2cyclictest977-21/usr/sbin/munin20:00:200
5178991714,2cyclictest6426-21perf23:59:590
5178991714,2cyclictest3691-21/usr/sbin/munin22:55:190
5178991714,2cyclictest3088-21timerwakeupswit21:55:210
5178991714,2cyclictest3088-21timerwakeupswit21:55:200
5178991714,2cyclictest30445-21ntp_states20:50:160
5178991714,2cyclictest30270-21cut21:50:000
5178991714,2cyclictest26524-21expr00:35:120
5178991714,2cyclictest22100-21smartctl20:35:180
5178991714,2cyclictest17532-21tune2fs19:30:130
5178991714,2cyclictest15233-21bounce22:20:030
5178991714,2cyclictest13100-21grep22:15:140
5178991714,2cyclictest10102-21expr22:10:140
5178991714,2cyclictest0-21swapper/021:50:130
5178991714,2cyclictest0-21swapper/020:20:130
5178991714,1cyclictest0-21swapper/000:34:500
517899171,1cyclictest89432chrt00:02:210
517899170,2cyclictest993-21dbus-daemon19:39:000
517899170,2cyclictest3985-21H222:10:210
517899170,2cyclictest3976-21H222:10:210
517899170,2cyclictest11423-21switchtime20:15:190
517899170,16cyclictest4432-21cat22:00:130
517899170,16cyclictest3501-21sed21:00:170
517899170,16cyclictest32063-21awk23:45:190
517899170,16cyclictest27035-21fschecks_time22:40:140
517899170,16cyclictest26187-21netstat23:35:170
517899170,16cyclictest20277-21cron22:30:010
517899170,16cyclictest19296-21awk00:20:180
517899170,16cyclictest17603-21sed20:30:000
517899170,16cyclictest15233-21sed19:25:170
517899170,16cyclictest11391-21grep23:10:120
517899170,16cyclictest1085-21gdbus19:20:020
517899170,16cyclictest1085-21gdbus19:20:020
517899170,16cyclictest0-21swapper/021:15:130
5180991614,1cyclictest0-21swapper/220:05:162
5180991613,2cyclictest18552-21cat22:25:132
5180991612,3cyclictest0-21swapper/221:11:352
518099160,2cyclictest16630-21cnf-update-db21:25:012
518099160,15cyclictest7567-21cat20:10:132
518099160,15cyclictest25255-21timerandwakeup00:30:192
518099160,15cyclictest0-21swapper/220:15:132
518099160,15cyclictest0-21swapper/219:15:122
518099160,15cyclictest0-21swapper/200:15:132
5179991614,1cyclictest32499-21/usr/sbin/munin20:55:151
5179991614,1cyclictest15318-21wc20:25:131
5179991614,1cyclictest12798-21cat20:20:131
5179991614,1cyclictest0-21swapper/122:30:121
5179991614,1cyclictest0-21swapper/121:45:101
5179991614,1cyclictest0-21swapper/120:50:121
5179991614,1cyclictest0-21swapper/120:45:121
5179991614,1cyclictest0-21swapper/120:10:131
5179991614,1cyclictest0-21swapper/119:40:141
5179991614,1cyclictest0-21swapper/100:10:131
5179991613,2cyclictest5153-21load23:55:171
517999160,1cyclictest10239-21expr22:10:151
517999160,1cyclictest0-21swapper/121:50:201
517999160,1cyclictest0-21swapper/120:40:141
517999160,15cyclictest19983-21expr19:35:131
517999160,15cyclictest0-21swapper/123:25:151
517999160,15cyclictest0-21swapper/122:25:161
517999160,15cyclictest0-21swapper/122:08:581
517999160,15cyclictest0-21swapper/121:40:031
5178991614,1cyclictest8194-21acpi19:15:100
5178991614,1cyclictest0-21swapper/021:30:130
5178991614,1cyclictest0-21swapper/020:55:140
5178991614,1cyclictest0-21swapper/019:55:130
517899160,2cyclictest20993-21expr22:30:120
517899160,15cyclictest8144-21gpgv23:05:020
517899160,15cyclictest23251-21if_eno119:40:140
517899160,15cyclictest14779-21hddtemp_smartct23:15:150
517899160,15cyclictest12869-21expr00:10:130
517899160,15cyclictest12188-21munin-run00:10:000
517899160,15cyclictest12188-21munin-run00:10:000
517899160,15cyclictest0-21swapper/023:20:590
517899160,15cyclictest0-21swapper/022:35:190
517899160,15cyclictest0-21swapper/021:40:120
517899160,15cyclictest0-21swapper/019:10:140
5180991512,2cyclictest23600-21sed19:40:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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