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2026-04-10 - 08:29
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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 10, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27380993512,14cyclictest4032-21accounts22:10:212
27380992212,5cyclictest0-21swapper/219:35:132
2738099220,21cyclictest843-21systemd-network21:22:432
2738099220,21cyclictest0-21swapper/200:17:432
2737799220,20cyclictest426-21systemd-udevd00:36:510
2737899214,16cyclictest0-21swapper/100:03:241
27378992118,2cyclictest3414-21master22:32:161
2737899210,3cyclictest0-21swapper/122:28:261
27380992016,3cyclictest0-21swapper/200:02:542
27380992014,3cyclictest0-21swapper/200:27:112
27378992017,1cyclictest0-21swapper/119:16:201
27378992016,3cyclictest0-21swapper/122:42:521
27378992012,3cyclictest28303-21acpi23:00:101
2738099192,16cyclictest5958-21smtpd19:26:452
27380991917,1cyclictest6808-21expr19:30:142
27380991917,1cyclictest0-21swapper/220:14:362
27380991916,3cyclictest0-21swapper/222:49:562
27380991916,2cyclictest14096-21nfsd423:30:172
2738099190,1cyclictest0-21swapper/221:07:142
27378991917,1cyclictest0-21swapper/121:37:401
27378991915,3cyclictest2927-21grep23:10:181
2737899190,16cyclictest4035-21H222:10:211
2737799192,16cyclictest0-21swapper/000:10:130
27377991916,2cyclictest10830-21processes19:35:210
2738099183,1cyclictest0-21swapper/220:43:102
2738099182,15cyclictest11193-21chrt00:22:282
27380991815,2cyclictest32636-21taskset21:13:412
27380991815,1cyclictest0-21swapper/221:02:252
27380991814,3cyclictest0-21swapper/222:30:022
27380991814,1cyclictest0-21swapper/221:36:292
27380991813,4cyclictest0-21swapper/221:57:342
2738099181,2cyclictest27708-21chrt22:57:462
2738099181,16cyclictest3989-21H222:10:212
2738099181,16cyclictest3989-21H222:10:212
2738099180,2cyclictest4099-21H222:10:212
2738099180,17cyclictest1784-21dpkg20:20:012
2737899183,1cyclictest0-21swapper/122:00:181
2737899183,1cyclictest0-21swapper/100:26:071
2737899182,15cyclictest0-21swapper/120:40:161
27378991817,1cyclictest21-21ksoftirqd/122:18:461
27378991815,2cyclictest863-21avahi-daemon19:35:221
27378991814,3cyclictest3983-21H222:10:211
2737899181,16cyclictest21727-21grep21:50:171
2737899180,2cyclictest4099-21H222:10:211
2737899180,16cyclictest0-21swapper/120:35:181
2737799180,1cyclictest0-21swapper/000:27:500
2737799180,17cyclictest25808-21nvmesmart_nvme023:50:190
2737799180,17cyclictest1829-21systemd-journal20:35:010
2737799180,17cyclictest0-21swapper/020:51:170
27380991715,1cyclictest28-21ksoftirqd/219:20:282
27380991715,1cyclictest27832-21smartctl23:55:142
27380991714,2cyclictest9623-21ntp_kernel_pll_20:30:192
27380991714,2cyclictest455-21plymouthd19:40:142
27380991714,2cyclictest3129-21ntp_offset23:10:182
27380991714,2cyclictest31168-21cron22:10:052
27380991714,2cyclictest17271-21/usr/sbin/munin00:35:152
27380991714,2cyclictest16960-21expr22:40:142
27380991714,2cyclictest16957-21chrt19:45:252
27380991714,2cyclictest16957-21chrt19:45:242
27380991714,2cyclictest11917-21grep20:35:162
2738099171,15cyclictest0-21swapper/222:15:142
2738099170,2cyclictest7774-21chrt20:29:212
2738099170,2cyclictest4099-21H222:10:212
2738099170,2cyclictest30088-21ntp_offset22:05:192
2738099170,2cyclictest28328-21grep19:10:152
2738099170,2cyclictest24374-21/usr/sbin/munin23:50:162
2738099170,16cyclictest8495-21cstates22:25:152
2738099170,16cyclictest8183-21cut22:25:012
2738099170,16cyclictest3987-21H222:10:212
2738099170,16cyclictest27343-21nvmesmart_nvme020:05:162
2738099170,16cyclictest20820-21expr21:50:132
2738099170,16cyclictest16010-21/usr/sbin/munin00:30:192
2738099170,16cyclictest0-21swapper/220:51:442
27378991716,1cyclictest21-21ksoftirqd/123:40:131
27378991715,1cyclictest17271-21/usr/sbin/munin00:35:111
27378991714,2cyclictest822-21grep20:15:221
27378991714,2cyclictest7688-21cstates23:20:131
27378991714,2cyclictest3983-21H222:10:211
27378991714,2cyclictest3983-21H222:10:211
27378991714,2cyclictest29565-21chrt21:06:211
27378991714,2cyclictest29359-21fschecks_time22:05:141
27378991714,2cyclictest2887-21vmstat21:15:251
27378991714,2cyclictest27794-21chrt22:58:561
27378991714,2cyclictest25662-21latency_hist22:00:011
27378991714,2cyclictest23998-21sendmail_mailst22:50:201
27378991714,2cyclictest23967-21apt-config23:50:001
27378991714,2cyclictest23868-21fschecks_time20:00:151
27378991714,2cyclictest20382-21cat21:50:001
27378991714,2cyclictest1811-21latency19:20:171
27378991714,2cyclictest14357-21chrt19:42:181
27378991714,2cyclictest10920-21pzem_voltage21:30:211
27378991714,2cyclictest10920-21pzem_voltage21:30:211
2737899171,15cyclictest19670-21mktemp22:45:021
2737899170,3cyclictest0-21swapper/120:55:191
2737899170,2cyclictest890-21awk22:10:191
2737899170,2cyclictest7040-21cat21:25:141
2737899170,2cyclictest31670-21fschecks_count23:05:141
2737899170,2cyclictest20053-21perf19:55:001
2737899170,2cyclictest17049-21latency_hist00:35:001
2737899170,2cyclictest14708-21timerandwakeup23:30:211
2737899170,1cyclictest3989-21H222:10:211
2737899170,16cyclictest8755-21cat20:30:151
2737899170,16cyclictest27807-21cut23:55:141
2737899170,16cyclictest27155-21nfsd420:05:151
2737899170,16cyclictest2273-21tar20:20:011
2737899170,16cyclictest17252-21fschecks_count20:45:151
2737899170,16cyclictest16539-21sendmail_mailqu19:45:221
2737899170,16cyclictest16539-21sendmail_mailqu19:45:221
2737899170,16cyclictest0-21swapper/120:52:311
27377991714,2cyclictest9773-21pzem_energy20:30:200
27377991714,2cyclictest4099-21H222:10:210
27377991714,2cyclictest399-20systemd-journal21:50:010
27377991714,2cyclictest3991-21H222:10:210
27377991714,2cyclictest3985-21H222:10:210
27377991714,2cyclictest3985-21H222:10:210
27377991714,2cyclictest3983-21H222:10:210
27377991714,2cyclictest3983-21H222:10:210
27377991714,2cyclictest3983-21H222:10:210
27377991714,2cyclictest3981-21H222:10:210
27377991714,2cyclictest3976-21H222:10:210
27377991714,2cyclictest3053-21systemd-logind19:18:510
27377991714,2cyclictest28272-21cron22:05:010
27377991714,2cyclictest16754-21snapd00:00:480
27377991714,2cyclictest16748-21snapd23:40:110
27377991714,2cyclictest14661-21sed22:35:170
27377991714,2cyclictest0-21swapper/020:05:160
27377991714,1cyclictest0-21swapper/023:35:200
2737799171,15cyclictest0-21swapper/022:05:180
2737799170,2cyclictest7334-21fschecks_time21:25:150
2737799170,2cyclictest3053-21systemd-logind20:16:510
2737799170,2cyclictest28673-21missed_timers21:05:160
2737799170,2cyclictest20944-21expr21:50:120
2737799170,2cyclictest1817-21latency21:15:190
2737799170,16cyclictest399-20systemd-journal23:50:000
2737799170,16cyclictest3991-21H222:10:210
2737799170,16cyclictest3981-21H222:10:210
2737799170,16cyclictest32653-21fschecks_time22:10:140
2737799170,16cyclictest29368-21chrt23:59:190
2737799170,16cyclictest28819-21apache_processe20:10:090
2737799170,16cyclictest16755-21snapd19:42:490
2737799170,16cyclictest15945-21lxd19:58:490
2737799170,16cyclictest1526-21lxd22:46:510
27380991615,1cyclictest0-21swapper/222:03:022
27380991614,1cyclictest0-21swapper/223:00:132
27380991614,1cyclictest0-21swapper/221:40:052
27380991614,1cyclictest0-21swapper/220:45:182
27380991614,1cyclictest0-21swapper/219:55:152
27380991614,1cyclictest0-21swapper/219:50:122
27380991613,2cyclictest4855-21cpuspeed_turbos23:15:152
2738099161,1cyclictest0-21swapper/220:20:012
2738099160,15cyclictest9323-21cut21:30:002
2738099160,15cyclictest228972sleep220:55:152
2738099160,15cyclictest14371-21hddtemp_smartct22:35:152
2738099160,15cyclictest1215-21expr21:15:142
2738099160,15cyclictest0-21swapper/223:35:152
2738099160,15cyclictest0-21swapper/223:20:172
2738099160,15cyclictest0-21swapper/223:05:142
2738099160,15cyclictest0-21swapper/222:50:142
2738099160,15cyclictest0-21swapper/221:45:172
2738099160,15cyclictest0-21swapper/220:00:132
2738099160,15cyclictest0-21swapper/200:05:162
2738099160,15cyclictest0-21swapper/200:05:152
2738099160,0cyclictest0-21swapper/200:14:512
27378991614,1cyclictest0-21swapper/123:25:191
27378991614,1cyclictest0-21swapper/100:20:181
27378991614,1cyclictest0-21swapper/100:10:181
27378991613,2cyclictest3983-21H222:10:211
27378991613,2cyclictest3414-21master23:15:101
2737899160,2cyclictest5549-21switchtime19:25:201
2737899160,2cyclictest31140-21perf20:15:001
2737899160,2cyclictest15475-21expr21:40:141
2737899160,1cyclictest0-21swapper/122:20:151
2737899160,15cyclictest7478-21missed_timers00:15:181
2737899160,15cyclictest0-21swapper/122:35:121
2737899160,15cyclictest0-21swapper/121:20:151
2737899160,15cyclictest0-21swapper/121:00:131
2737899160,15cyclictest0-21swapper/120:00:011
27377991614,1cyclictest23837-21fschecks_count21:55:170
27377991614,1cyclictest0-21swapper/023:25:140
27377991614,1cyclictest0-21swapper/023:20:150
27377991614,1cyclictest0-21swapper/023:05:160
27377991614,1cyclictest0-21swapper/022:55:000
27377991614,1cyclictest0-21swapper/022:30:180
27377991614,1cyclictest0-21swapper/022:21:160
27377991614,1cyclictest0-21swapper/021:35:540
27377991614,1cyclictest0-21swapper/021:20:170
27377991614,1cyclictest0-21swapper/021:00:040
27377991614,1cyclictest0-21swapper/020:55:140
27377991614,1cyclictest0-21swapper/020:45:130
27377991614,1cyclictest0-21swapper/020:25:120
27377991614,1cyclictest0-21swapper/019:50:130
27377991614,1cyclictest0-21swapper/019:10:120
2737799160,2cyclictest6564-21grep00:15:130
2737799160,15cyclictest9475-21nfsd422:25:180
2737799160,15cyclictest4693-21apache_volume23:15:120
2737799160,15cyclictest3987-21H222:10:210
2737799160,15cyclictest15558-21expr19:45:150
2737799160,15cyclictest15558-21expr19:45:140
2737799160,15cyclictest0-21swapper/022:50:180
2737799160,15cyclictest0-21swapper/021:40:210
2737799160,15cyclictest0-21swapper/020:40:130
2737799160,15cyclictest0-21swapper/000:20:150
27377991513,1cyclictest0-21swapper/022:16:290
27377991513,1cyclictest0-21swapper/020:01:080
2737799150,14cyclictest0-21swapper/023:10:150
2737799150,14cyclictest0-21swapper/019:30:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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