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2026-08-20 - 19:28
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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 Thu Aug 20, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7806992724,2cyclictest1856-21systemd-udevd09:02:521
7806992724,2cyclictest1856-21systemd-udevd09:02:521
780299240,15cyclictest0-21swapper/010:44:340
780699230,18cyclictest0-21swapper/108:20:111
781199220,18cyclictest0-21swapper/210:09:142
7806992119,1cyclictest21-21ksoftirqd/109:44:321
780699204,15cyclictest0-21swapper/110:11:051
780699202,3cyclictest3030-21gmain07:17:011
780699200,17cyclictest0-21swapper/110:24:431
780299201,18cyclictest4035-21H222:10:210
781199193,15cyclictest0-21swapper/209:10:032
7811991917,1cyclictest28-21ksoftirqd/211:14:152
7811991916,1cyclictest0-21swapper/211:47:172
7811991915,3cyclictest4035-21H222:10:212
7811991914,4cyclictest3976-21H222:10:212
781199190,16cyclictest3991-21H222:10:212
7806991916,2cyclictest3985-21H222:10:211
7806991915,3cyclictest0-21swapper/112:36:501
7806991914,4cyclictest870-21systemd-logind10:04:511
780699190,16cyclictest3989-21H222:10:211
780699190,16cyclictest3976-21H222:10:211
780299193,15cyclictest7064-21fw_packets08:05:170
7802991916,2cyclictest30978-21apt-key09:45:010
780299191,3cyclictest2666-21ls10:50:000
780299190,2cyclictest3985-21H222:10:210
780299190,2cyclictest3979-21H222:10:210
780299190,17cyclictest25949-21grep11:30:140
780299190,16cyclictest3985-21H222:10:210
780299190,16cyclictest3976-21H222:10:210
780299190,16cyclictest3976-21H222:10:210
781199182,1cyclictest28-21ksoftirqd/207:52:162
781199182,15cyclictest3989-21H222:10:212
781199182,15cyclictest1455-21chrt11:41:192
7811991818,0cyclictest0-21swapper/212:35:222
7811991816,1cyclictest0-21swapper/210:57:262
7811991816,1cyclictest0-21swapper/208:23:002
7811991815,2cyclictest11037-21timerandwakeup08:10:222
7811991815,1cyclictest0-21swapper/210:17:382
7811991814,3cyclictest3979-21H222:10:212
7811991814,2cyclictest25957-21nvmesmart_nvme012:25:182
781199181,16cyclictest4066-21http_loadtime08:55:162
781199180,2cyclictest4099-21H222:10:212
781199180,2cyclictest3987-21H222:10:212
781199180,2cyclictest3987-21H222:10:212
781199180,2cyclictest3981-21H222:10:212
781199180,2cyclictest3981-21H222:10:212
781199180,2cyclictest3981-21H222:10:212
781199180,2cyclictest3979-21H222:10:212
781199180,1cyclictest0-21swapper/207:45:122
781199180,17cyclictest3990-21H222:10:212
781199180,17cyclictest3985-21H222:10:212
781199180,17cyclictest1085-21gdbus11:40:012
781199180,16cyclictest3981-21H222:10:212
780699182,15cyclictest88732sleep108:09:581
780699182,15cyclictest21-21ksoftirqd/112:20:211
7806991815,2cyclictest3903-21cut11:45:181
7806991814,3cyclictest4035-21H222:10:211
7806991814,3cyclictest3989-21H222:10:211
7806991814,3cyclictest0-21swapper/109:50:291
7806991814,2cyclictest4099-21H222:10:211
7806991813,3cyclictest30908-21ps08:45:181
7806991813,2cyclictest4035-21H222:10:211
780699181,2cyclictest6094-21nfsd409:55:181
780699181,1cyclictest0-21swapper/111:11:191
780699180,2cyclictest4099-21H222:10:211
780699180,2cyclictest4099-21H222:10:211
780699180,2cyclictest3983-21H222:10:211
780699180,2cyclictest3979-21H222:10:211
780699180,2cyclictest3976-21H222:10:211
780699180,17cyclictest3991-21H222:10:211
780699180,17cyclictest3989-21H222:10:211
780699180,17cyclictest3985-21H222:10:211
780699180,16cyclictest3981-21H222:10:211
780699180,16cyclictest14504-21snapd10:50:021
780699180,16cyclictest1300-21lxd11:16:451
780699180,15cyclictest3981-21H222:10:211
780699180,15cyclictest3981-21H222:10:211
780299182,15cyclictest9-21ksoftirqd/008:28:260
780299182,15cyclictest4035-21H222:10:210
7802991816,1cyclictest30832-21awk08:45:160
7802991815,2cyclictest3983-21H222:10:210
7802991815,2cyclictest3983-21H222:10:210
7802991814,3cyclictest3989-21H222:10:210
7802991814,3cyclictest3987-21H222:10:210
7802991814,3cyclictest0-21swapper/010:07:020
7802991814,2cyclictest3987-21H222:10:210
780299181,16cyclictest9392-21nfsd407:10:160
780299180,3cyclictest2007-21systemd-journal10:58:060
780299180,2cyclictest4099-21H222:10:210
780299180,2cyclictest3991-21H222:10:210
780299180,2cyclictest3987-21H222:10:210
780299180,17cyclictest3985-21H222:10:210
780299180,17cyclictest0-21swapper/010:10:200
780299180,15cyclictest4099-21H222:10:210
780299180,15cyclictest3989-21H222:10:210
780299180,15cyclictest0-21swapper/011:09:510
7811991715,1cyclictest0-21swapper/212:05:142
7811991714,2cyclictest993-21dbus-daemon11:50:212
7811991714,2cyclictest8421-21munin-run09:05:012
7811991714,2cyclictest8421-21munin-run09:05:002
7811991714,2cyclictest8294-21tr07:10:132
7811991714,2cyclictest3989-21H222:10:212
7811991714,2cyclictest3989-21H222:10:212
7811991714,2cyclictest3976-21H222:10:212
7811991714,2cyclictest27536-21if_enp1s008:40:182
7811991714,2cyclictest24172-21/usr/sbin/munin10:30:142
7811991714,2cyclictest23206-21fschecks_count11:25:152
7811991714,2cyclictest1694-21proc_pri10:45:202
7811991714,2cyclictest12066-21ntp_kernel_err12:00:172
7811991714,2cyclictest0-21swapper/208:35:172
7811991714,2cyclictest0-21swapper/208:35:172
7811991714,1cyclictest0-21swapper/210:12:012
7811991713,3cyclictest843-21systemd-network10:21:312
7811991713,3cyclictest455-21plymouthd08:05:002
7811991713,3cyclictest3989-21H222:10:212
781199170,2cyclictest8680-21missed_timers10:00:172
781199170,2cyclictest23626-21latency09:30:172
781199170,2cyclictest22145-21fschecks_time10:25:142
781199170,2cyclictest11489-21acpi11:05:112
781199170,1cyclictest3991-21H222:10:212
781199170,16cyclictest8246-21cat11:55:122
781199170,16cyclictest4246-21sed10:50:162
781199170,16cyclictest3991-21H222:10:212
781199170,16cyclictest3985-21H222:10:212
781199170,16cyclictest3144-21netstat09:50:182
781199170,16cyclictest27090-21date07:45:002
781199170,16cyclictest18336-21nfsd411:15:192
781199170,16cyclictest13572-21/usr/sbin/munin07:20:102
781199170,15cyclictest3979-21H222:10:212
781199170,15cyclictest0-21swapper/209:46:522
7806991714,2cyclictest4035-21H222:10:211
7806991714,2cyclictest3991-21H222:10:211
7806991714,2cyclictest3989-21H222:10:211
7806991714,2cyclictest3987-21H222:10:211
7806991714,2cyclictest3985-21H222:10:211
7806991714,2cyclictest3123-21apache_processe08:55:111
7806991714,2cyclictest21084-21nfsd411:20:171
7806991714,2cyclictest19066-21apache_processe12:15:091
7806991714,2cyclictest14907-21proc_pri12:05:201
7806991714,2cyclictest10814-21seq09:06:031
7806991712,3cyclictest0-21swapper/110:35:191
780699171,15cyclictest3991-21H222:10:211
780699170,2cyclictest591-21expr08:50:151
780699170,2cyclictest3991-21H222:10:211
780699170,2cyclictest3989-21H222:10:211
780699170,2cyclictest3985-21H222:10:211
780699170,2cyclictest3976-21H222:10:211
780699170,2cyclictest3976-21H222:10:211
780699170,2cyclictest25622-21expr11:30:121
780699170,1cyclictest3989-21H222:10:211
780699170,1cyclictest0-21swapper/110:05:171
780699170,16cyclictest4035-21H222:10:211
780699170,16cyclictest3991-21H222:10:211
780699170,16cyclictest3989-21H222:10:211
780699170,16cyclictest3979-21H222:10:211
780699170,16cyclictest18429-21df_inode08:25:121
780699170,15cyclictest3976-21H222:10:211
780299172,15cyclictest9-21ksoftirqd/007:21:390
7802991715,1cyclictest0-21swapper/008:15:140
7802991714,3cyclictest0-21swapper/012:26:310
7802991714,2cyclictest4865-21nfsd408:00:190
7802991714,2cyclictest4099-21H222:10:210
7802991714,2cyclictest3979-21H222:10:210
7802991714,2cyclictest28377-21missed_timers12:30:160
7802991714,2cyclictest26499-21turbostat10:35:000
7802991714,2cyclictest18669-21processes09:20:200
7802991714,2cyclictest1113-21anvil09:50:210
780299171,15cyclictest20337-21expr07:30:170
780299171,15cyclictest0-21swapper/011:50:390
780299171,15cyclictest0-21swapper/009:25:200
780299170,2cyclictest3991-21H222:10:210
780299170,2cyclictest3989-21H222:10:210
780299170,2cyclictest3983-21H222:10:210
780299170,2cyclictest3976-21H222:10:210
780299170,2cyclictest27519-21grep10:35:170
780299170,2cyclictest2564-21chrt07:56:030
780299170,2cyclictest24067-21tr08:35:150
780299170,2cyclictest24067-21tr08:35:140
780299170,2cyclictest1892-21cron11:45:000
780299170,1cyclictest4099-21H222:10:210
780299170,1cyclictest0-21swapper/009:06:270
780299170,16cyclictest4099-21H222:10:210
780299170,16cyclictest3981-21H222:10:210
780299170,16cyclictest31481-21grep09:45:120
780299170,16cyclictest3058-21rs:main0
780299170,16cyclictest18275-21grep11:15:170
780299170,16cyclictest15459-21fschecks_time08:20:140
780299170,16cyclictest14501-21snapd08:57:570
7811991614,1cyclictest0-21swapper/207:30:122
7811991613,2cyclictest26910-21pzem_power09:35:212
7811991613,2cyclictest22913-21missed_timers12:20:172
781199160,15cyclictest31189-21ntpq10:40:172
7806991614,1cyclictest31744-21/usr/sbin/munin11:40:161
780699160,2cyclictest10363-21chrt07:14:321
780699160,15cyclictest6997-21latency10:55:151
7802991614,1cyclictest6512-21expr09:00:130
7802991614,1cyclictest6512-21expr09:00:120
7802991614,1cyclictest0-21swapper/012:10:120
780299160,2cyclictest21799-21/usr/sbin/munin12:20:140
780299160,15cyclictest0-21swapper/012:35:200
780299160,15cyclictest0-21swapper/011:35:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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