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2026-05-20 - 08:41
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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 Wed May 20, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
704992825,2cyclictest21-21ksoftirqd/123:55:131
70899250,24cyclictest0-21swapper/223:55:132
69999220,4cyclictest0-21swapper/019:53:180
70899210,3cyclictest0-21swapper/200:35:002
708992017,2cyclictest26071-21processes23:40:182
70899200,19cyclictest843-21systemd-network20:35:392
704992016,3cyclictest16324-21fgrep00:20:221
699992017,2cyclictest7695-21nvmesmart_nvme000:05:240
70899192,16cyclictest2069-21systemd-udevd00:28:512
708991919,0cyclictest0-21swapper/220:12:592
708991917,1cyclictest0-21swapper/223:36:572
708991917,1cyclictest0-21swapper/223:36:572
708991917,1cyclictest0-21swapper/222:40:182
70899190,4cyclictest399-20systemd-journal20:04:552
70899190,18cyclictest22693-21grep20:45:022
70499192,16cyclictest12071-21grep23:15:191
704991917,1cyclictest0-21swapper/120:59:261
704991916,2cyclictest0-21swapper/100:10:391
70499190,4cyclictest30180-21nfsd422:50:191
70499190,3cyclictest0-21swapper/121:40:181
699991917,1cyclictest9998-21which00:10:160
699991917,1cyclictest14847-21cat00:20:150
69999190,18cyclictest0-21swapper/022:19:500
70899182,15cyclictest30415-21uname22:50:212
70899182,15cyclictest28-21ksoftirqd/200:16:172
70899182,15cyclictest15155-21cat20:30:162
70899182,15cyclictest13383-21timerandwakeup20:25:212
708991816,1cyclictest7855-21timerandwakeup22:10:212
708991816,1cyclictest28-21ksoftirqd/221:21:302
708991816,1cyclictest0-21swapper/223:27:252
708991816,1cyclictest0-21swapper/223:15:202
708991815,1cyclictest0-21swapper/200:21:262
708991814,3cyclictest3989-21H222:10:212
70899181,2cyclictest3053-21systemd-logind19:10:522
70899180,17cyclictest364-21processes21:00:192
70899180,15cyclictest3985-21H222:10:212
70499182,1cyclictest179882sleep121:32:221
704991816,1cyclictest0-21swapper/122:44:101
704991816,1cyclictest0-21swapper/100:38:241
704991815,2cyclictest0-21swapper/121:10:011
704991814,3cyclictest0-21swapper/122:56:511
704991813,4cyclictest3976-21H222:10:211
70499181,1cyclictest0-21swapper/120:35:471
70499180,2cyclictest3976-21H222:10:211
70499180,18cyclictest0-21swapper/122:45:181
70499180,17cyclictest3979-21H222:10:211
70499180,16cyclictest3983-21H222:10:211
70499180,15cyclictest3979-21H222:10:211
69999182,15cyclictest31182-21chrt22:54:470
699991816,1cyclictest9-21ksoftirqd/023:28:000
699991814,3cyclictest7706-21sed23:10:000
699991813,5cyclictest0-21swapper/020:20:020
69999180,3cyclictest3987-21H222:10:210
69999180,2cyclictest4035-21H222:10:210
69999180,1cyclictest0-21swapper/022:40:000
69999180,17cyclictest4035-21H222:10:210
69999180,15cyclictest4099-21H222:10:210
69999180,15cyclictest3985-21H222:10:210
70899178,7cyclictest0-21swapper/220:45:182
708991715,1cyclictest3976-21H222:10:212
708991715,1cyclictest16320-21nfsd419:35:192
708991715,1cyclictest0-21swapper/222:35:172
708991715,1cyclictest0-21swapper/200:01:532
708991714,2cyclictest993-21dbus-daemon21:15:232
708991714,2cyclictest3053-21systemd-logind23:30:512
708991714,2cyclictest28175-21nfsd421:50:182
708991714,2cyclictest28175-21nfsd421:50:182
708991714,2cyclictest25047-21cat21:45:182
708991714,2cyclictest21651-21cpuspeed_turbos21:40:142
708991714,2cyclictest21395-21fschecks_time19:45:152
70899170,2cyclictest9543-21/usr/sbin/munin23:10:192
70899170,2cyclictest5304-21expr21:10:142
70899170,2cyclictest3987-21H222:10:212
70899170,2cyclictest27298-21processes20:50:202
70899170,2cyclictest1829-21systemd-journal19:45:002
70899170,2cyclictest14777-21expr22:25:132
70899170,2cyclictest10015-21http_loadtime00:10:162
70899170,2cyclictest0-21swapper/200:09:372
70899170,16cyclictest6345-21postgres19:18:172
70899170,16cyclictest3991-21H222:10:212
70899170,16cyclictest3976-21H222:10:212
70899170,16cyclictest3976-21H222:10:212
70899170,16cyclictest3053-21systemd-logind22:04:522
70899170,16cyclictest3053-21systemd-logind19:50:522
70899170,16cyclictest2493-21idleruntime21:05:162
70899170,16cyclictest0-21swapper/222:16:002
704991715,1cyclictest0-21swapper/121:25:201
704991714,2cyclictest4099-21H222:10:211
704991714,2cyclictest2962-21apache_processe22:05:131
704991714,2cyclictest28258-21chrt19:56:591
704991714,2cyclictest1379-21mailstats20:05:211
704991714,2cyclictest1379-21mailstats20:05:211
704991714,2cyclictest11499-21missed_timers21:20:171
704991714,2cyclictest10552-21cat23:15:011
704991714,1cyclictest0-21swapper/119:23:081
70499171,15cyclictest21-21ksoftirqd/119:31:091
70499171,15cyclictest0-21swapper/123:20:491
70499170,2cyclictest863-21avahi-daemon22:15:221
70499170,2cyclictest6342-21ntp_offset21:10:191
70499170,2cyclictest4099-21H222:10:211
70499170,2cyclictest27223-21cat21:50:141
70499170,2cyclictest27223-21cat21:50:141
70499170,2cyclictest24323-21grep21:45:161
70499170,2cyclictest18008-21latency22:30:161
70499170,2cyclictest15048-21/usr/sbin/munin22:25:161
70499170,1cyclictest3989-21H222:10:211
70499170,1cyclictest0-21swapper/123:03:241
70499170,16cyclictest6602-21ps23:05:181
70499170,16cyclictest4181-21fschecks_count00:00:161
70499170,16cyclictest399-20systemd-journal21:37:221
70499170,16cyclictest3985-21H222:10:211
70499170,16cyclictest3983-21H222:10:211
70499170,16cyclictest3983-21H222:10:211
70499170,16cyclictest30841-21grep21:55:171
70499170,16cyclictest26999-21grep20:50:171
699991716,1cyclictest9-21ksoftirqd/020:57:070
699991716,1cyclictest9-21ksoftirqd/020:51:290
699991715,1cyclictest165472chrt20:33:420
699991715,1cyclictest0-21swapper/021:40:190
699991714,2cyclictest8128-21nfsd419:20:170
699991714,2cyclictest3976-21H222:10:210
699991714,2cyclictest26933-21sleep23:45:000
699991714,2cyclictest20621-21sshd21:36:090
699991714,2cyclictest1526-21lxd22:40:510
699991714,2cyclictest11952-21munin-run19:30:010
699991714,1cyclictest0-21swapper/020:40:180
699991713,3cyclictest3976-21H222:10:210
699991713,3cyclictest3976-21H222:10:210
69999170,2cyclictest8031-21apache_processe23:10:100
69999170,2cyclictest5790-21dpkg20:15:010
69999170,2cyclictest4882-21/usr/sbin/munin19:15:160
69999170,2cyclictest3976-21H222:10:210
69999170,2cyclictest28361-21ntp_states21:50:190
69999170,2cyclictest28361-21ntp_states21:50:190
69999170,2cyclictest27702-21/usr/sbin/munin19:55:200
69999170,2cyclictest17780-21idleruntime22:30:160
69999170,2cyclictest14499-21snapd21:57:590
69999170,2cyclictest1381-21anvil23:00:050
69999170,2cyclictest12881-21if_lxdbr000:15:150
69999170,1cyclictest3991-21H222:10:210
69999170,16cyclictest9960-21missed_timers20:20:170
69999170,16cyclictest880-21rs:main0
69999170,16cyclictest3989-21H222:10:210
69999170,16cyclictest31273-21/usr/sbin/munin21:00:210
69999170,16cyclictest30670-21tune2fs23:50:140
69999170,16cyclictest20360-21ntp_offset23:30:170
69999170,16cyclictest17715-21cpuspeed_turbos00:25:130
69999170,16cyclictest1525-21lxd22:20:510
69999170,16cyclictest14690-21expr22:25:130
69999170,16cyclictest14380-21chrt19:31:190
69999170,16cyclictest13902-21cron20:30:000
708991614,1cyclictest88452chrt20:20:072
708991614,1cyclictest0-21swapper/222:30:152
708991614,1cyclictest0-21swapper/221:55:132
708991614,1cyclictest0-21swapper/221:35:132
708991614,1cyclictest0-21swapper/219:20:122
70899160,2cyclictest0-21swapper/222:45:012
70899160,1cyclictest0-21swapper/223:50:132
70899160,15cyclictest5994-21gpgconf20:15:022
70899160,15cyclictest29282-21http_loadtime20:55:152
70899160,15cyclictest26940-21ls19:55:152
70899160,15cyclictest1639-21timerwakeupswit20:05:222
70899160,15cyclictest1639-21timerwakeupswit20:05:222
70899160,15cyclictest13856-21which21:25:142
70899160,15cyclictest12065-21cat22:20:152
70899160,15cyclictest0-21swapper/223:05:152
70899160,15cyclictest0-21swapper/222:05:042
704991614,1cyclictest0-21swapper/123:45:141
704991614,1cyclictest0-21swapper/121:00:211
704991614,1cyclictest0-21swapper/120:45:141
704991614,1cyclictest0-21swapper/120:30:211
704991614,1cyclictest0-21swapper/120:27:321
704991614,1cyclictest0-21swapper/120:15:021
704991614,1cyclictest0-21swapper/119:15:151
704991613,2cyclictest2941-21expr20:10:161
70499160,1cyclictest21912-21strings19:45:181
70499160,15cyclictest9776-21irqstats20:20:161
70499160,15cyclictest599-21df22:00:141
70499160,15cyclictest3989-21H222:10:211
70499160,15cyclictest3983-21H222:10:211
70499160,15cyclictest20212-21dpkg20:40:011
70499160,15cyclictest12468-21irqstats22:20:171
70499160,15cyclictest0-21swapper/123:50:131
70499160,15cyclictest0-21swapper/122:10:131
70499160,15cyclictest0-21swapper/120:00:131
70499160,15cyclictest0-21swapper/119:40:201
70499160,15cyclictest0-21swapper/119:35:151
699991614,1cyclictest0-21swapper/023:20:140
699991614,1cyclictest0-21swapper/021:25:140
699991614,1cyclictest0-21swapper/019:35:130
699991614,1cyclictest0-21swapper/000:30:220
699991613,2cyclictest3217-21cpuspeed_turbos22:05:140
69999160,2cyclictest17393-21expr20:35:130
69999160,1cyclictest0-21swapper/019:40:210
69999160,15cyclictest31213-21postgres20:04:540
69999160,15cyclictest24376-21expr21:45:160
69999160,15cyclictest10938-21expr21:20:140
69999160,15cyclictest1054-21apt-get19:10:160
69999160,15cyclictest0-21swapper/022:45:130
69999160,15cyclictest0-21swapper/022:05:010
69999160,15cyclictest0-21swapper/021:15:160
69999160,15cyclictest0-21swapper/021:05:170
69999160,15cyclictest0-21swapper/020:05:140
69999160,15cyclictest0-21swapper/020:05:140
69999160,15cyclictest0-21swapper/019:46:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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