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2026-08-20 - 13:53
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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 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28946992711,2cyclictest0-21swapper/022:40:130
28947992625,0cyclictest0-21swapper/121:35:011
28947992220,2cyclictest0-21swapper/120:54:491
2894699214,16cyclictest31585-21sort00:00:010
2894699212,18cyclictest0-21swapper/000:35:150
28946992118,2cyclictest8116-21chrt19:29:100
28946992117,3cyclictest7690-21ls22:20:010
28946992117,3cyclictest5519-21cat23:10:200
28946992117,3cyclictest18518-21idleruntime-cro20:45:000
28946992117,3cyclictest18066-21awk21:40:150
28946992117,3cyclictest18066-21awk21:40:150
28946992117,3cyclictest14005-21awk21:35:000
28947992016,3cyclictest14484-21cut22:30:181
2894699203,2cyclictest23341-21expr22:45:190
2894699203,16cyclictest5918-21cat20:20:150
2894699203,16cyclictest4412-21sed19:20:210
2894699203,16cyclictest1079-21cups-browsed22:20:150
28946992018,1cyclictest0-21swapper/023:15:560
28946992017,2cyclictest28138-21sed21:00:170
28946992017,2cyclictest26237-21wc20:00:160
28946992017,2cyclictest23627-21cat23:45:130
28946992017,2cyclictest14671-21wc21:35:140
28946992017,2cyclictest12192-21sed22:25:190
28946992016,3cyclictest2047-21cpu20:15:140
28946992016,3cyclictest0-21swapper/023:00:180
2894699201,18cyclictest0-21swapper/021:10:130
2894899193,15cyclictest28-21ksoftirqd/219:19:072
2894899190,16cyclictest4035-21H222:10:212
2894899190,16cyclictest3983-21H222:10:212
2894899190,16cyclictest3981-21H222:10:212
2894899190,16cyclictest3981-21H222:10:212
2894799199,5cyclictest0-21swapper/122:10:141
2894799194,1cyclictest0-21swapper/123:45:151
2894799192,16cyclictest27249-21grep21:55:191
2894799190,16cyclictest3991-21H222:10:211
2894699193,2cyclictest427-21iwlist19:15:160
2894699192,2cyclictest7647-21nvmesmart_nvme021:20:210
2894699192,2cyclictest10626-21chrt19:31:180
2894699192,16cyclictest21802-21expr20:50:120
2894699192,16cyclictest18422-21uname23:35:150
2894699192,16cyclictest12000-21cstates19:35:130
2894699192,16cyclictest0-21swapper/021:25:150
28946991917,1cyclictest140652chrt23:26:250
28946991916,2cyclictest3981-21H222:10:210
28946991916,2cyclictest31117-21cut22:05:000
28946991916,2cyclictest30519-21timerandwakeup20:05:210
28946991916,2cyclictest25057-21grep20:55:150
28946991916,2cyclictest2476-21expr22:10:140
28946991916,2cyclictest2391-21tr00:05:130
28946991916,2cyclictest20448-21chrt20:45:180
28946991916,2cyclictest17685-21awk00:30:190
28946991916,2cyclictest17664-21apt-config19:45:020
28946991916,2cyclictest14872-21cpuspeed_turbos23:30:100
28946991916,2cyclictest12589-21mailstats00:20:200
28946991916,2cyclictest1057-21cron19:55:000
28946991915,3cyclictest0-21swapper/022:30:180
28946991915,3cyclictest0-21swapper/021:45:170
28946991913,5cyclictest0-21swapper/021:50:210
2894699190,18cyclictest0-21swapper/023:40:180
28948991817,1cyclictest0-21swapper/221:35:012
28948991816,1cyclictest28-21ksoftirqd/222:45:212
28948991815,2cyclictest3889-21nfsd419:20:182
28948991815,2cyclictest2069-21systemd-udevd23:58:512
28948991815,1cyclictest0-21swapper/223:02:432
28948991814,3cyclictest3983-21H222:10:212
28948991814,3cyclictest15777-21systemctl20:40:012
2894899181,1cyclictest0-21swapper/222:30:182
2894899181,16cyclictest4099-21H222:10:212
2894899181,16cyclictest3987-21H222:10:212
2894899180,3cyclictest32144-21expr21:09:002
2894899180,2cyclictest870-21systemd-logind21:48:522
2894899180,2cyclictest3991-21H222:10:212
2894899180,2cyclictest3989-21H222:10:212
2894899180,2cyclictest3987-21H222:10:212
2894899180,2cyclictest3983-21H222:10:212
2894899180,1cyclictest3985-21H222:10:212
2894899180,17cyclictest1516-21lxd21:16:502
2894899180,16cyclictest3985-21H222:10:212
2894899180,15cyclictest3987-21H222:10:212
2894799182,15cyclictest8986-21nfsd422:20:171
28947991817,1cyclictest21-21ksoftirqd/122:41:011
28947991816,1cyclictest29184-21switchtime22:55:221
28947991816,1cyclictest0-21swapper/120:46:341
28947991815,2cyclictest3979-21H222:10:211
28947991815,2cyclictest10626-21grep23:20:161
28947991814,3cyclictest3989-21H222:10:211
28947991814,3cyclictest3983-21H222:10:211
28947991814,3cyclictest3981-21H222:10:211
2894799181,15cyclictest4035-21H222:10:211
28947991810,4cyclictest0-21swapper/122:35:281
2894799180,3cyclictest16368-21cpuspeed_turbos20:40:131
2894799180,2cyclictest3991-21H222:10:211
2894799180,2cyclictest3989-21H222:10:211
2894799180,2cyclictest3987-21H222:10:211
2894799180,17cyclictest4099-21H222:10:211
2894799180,17cyclictest3979-21H222:10:211
2894799180,15cyclictest4035-21H222:10:211
2894699182,2cyclictest9111-21awk20:25:190
2894699182,15cyclictest0-21swapper/022:50:140
28946991816,1cyclictest0-21swapper/000:15:160
28946991815,2cyclictest861-21pzem_current00:00:240
28946991815,2cyclictest25627-21sed20:00:010
28946991815,2cyclictest1567-21cat23:05:160
28946991815,2cyclictest12201-21sed20:30:200
28946991815,2cyclictest0-21swapper/023:20:150
28946991815,2cyclictest0-21swapper/023:00:000
28946991815,2cyclictest0-21swapper/021:05:130
28946991815,2cyclictest0-21swapper/000:26:560
28946991814,3cyclictest399-20systemd-journal21:15:010
2894699181,2cyclictest14535-21awk20:35:170
2894699181,16cyclictest0-21swapper/022:05:160
2894699181,16cyclictest0-21swapper/022:05:160
2894699180,17cyclictest3989-21H222:10:210
2894699180,17cyclictest0-21swapper/023:50:150
28948991715,1cyclictest28-21ksoftirqd/223:35:552
28948991715,1cyclictest2507-21expr20:15:142
28948991715,1cyclictest0-21swapper/222:55:002
28948991714,2cyclictest9102-21cut20:25:192
28948991714,2cyclictest3991-21H222:10:212
28948991714,2cyclictest3991-21H222:10:212
28948991714,2cyclictest31756-21apt00:00:142
28948991714,2cyclictest28633-21/usr/sbin/munin22:00:112
28948991714,2cyclictest28510-21ntp_states21:00:192
28948991714,2cyclictest2087-21ps23:05:192
28948991714,2cyclictest17764-21/usr/sbin/munin19:45:182
28948991714,2cyclictest17156-21dpkg19:45:012
28948991713,3cyclictest0-21swapper/223:50:172
2894899170,2cyclictest3989-21H222:10:212
2894899170,2cyclictest3987-21H222:10:212
2894899170,2cyclictest20453-21systemctl22:40:182
2894899170,2cyclictest19816-21fschecks_count00:35:132
2894899170,2cyclictest19037-21tr20:45:122
2894899170,2cyclictest18633-21awk21:40:182
2894899170,2cyclictest18633-21awk21:40:182
2894899170,2cyclictest1327-21kernelversion21:10:172
2894899170,1cyclictest0-21swapper/221:40:012
2894899170,16cyclictest9475-21tr23:20:122
2894899170,16cyclictest9143-21cut21:25:142
2894899170,16cyclictest4674-21cupsd21:52:352
2894899170,16cyclictest4099-21H222:10:212
2894899170,16cyclictest3979-21H222:10:212
2894899170,16cyclictest31711-21expr22:05:142
2894899170,16cyclictest31711-21expr22:05:142
2894899170,16cyclictest24733-21expr20:55:142
2894899170,16cyclictest21093-21df19:50:142
2894899170,16cyclictest17074-21tune2fs00:30:152
2894899170,16cyclictest1523-21lxd19:10:502
2894899170,16cyclictest14611-21mii-tool00:25:162
2894899170,16cyclictest12759-21latency19:35:162
2894899170,16cyclictest12049-21apt-get23:25:122
2894899170,16cyclictest0-21swapper/222:25:302
2894899170,15cyclictest3981-21H222:10:212
28947991715,1cyclictest3979-21H222:10:211
28947991714,2cyclictest5586-21grep00:10:131
28947991714,2cyclictest3991-21H222:10:211
28947991714,2cyclictest3987-21H222:10:211
28947991714,2cyclictest3985-21H222:10:211
28947991714,2cyclictest32657-21irqstats00:00:191
28947991714,2cyclictest29053-21users21:00:221
28947991714,2cyclictest26140-21gpgconf23:50:011
28947991714,2cyclictest13275-21apache_volume20:35:111
28947991714,2cyclictest12628-21sh23:25:141
28947991714,2cyclictest1100-21snmpd23:00:031
2894799171,1cyclictest0-21swapper/121:40:171
2894799171,1cyclictest0-21swapper/121:40:171
2894799171,1cyclictest0-21swapper/120:25:161
2894799170,2cyclictest4035-21H222:10:211
2894799170,2cyclictest3991-21H222:10:211
2894799170,2cyclictest3989-21H222:10:211
2894799170,2cyclictest23242-21egrep21:50:131
2894799170,2cyclictest2026-21apache_volume20:15:131
2894799170,2cyclictest16450-21apache_processe00:30:131
2894799170,1cyclictest0-21swapper/123:55:181
2894799170,1cyclictest0-21swapper/121:11:321
2894799170,1cyclictest0-21swapper/119:15:151
2894799170,16cyclictest4099-21H222:10:211
2894799170,16cyclictest4035-21H222:10:211
2894799170,16cyclictest3991-21H222:10:211
2894799170,16cyclictest3987-21H222:10:211
2894799170,16cyclictest3987-21H222:10:211
2894799170,16cyclictest3985-21H222:10:211
2894799170,16cyclictest3985-21H222:10:211
2894799170,16cyclictest31580-21/usr/sbin/munin20:10:201
2894799170,16cyclictest24728-21apache_accesses22:50:101
2894799170,16cyclictest22054-21latency_hist00:40:001
2894799170,16cyclictest10547-21apache_processe20:30:101
2894799170,15cyclictest3983-21H222:10:211
2894799170,15cyclictest14814-21cpuspeed_turbos19:40:121
2894799170,15cyclictest0-21swapper/121:45:181
28946991715,2cyclictest0-21swapper/019:10:150
28946991715,1cyclictest179112chrt22:35:230
2894699170,1cyclictest4099-21H222:10:210
2894899160,1cyclictest0-21swapper/223:30:162
2894899160,1cyclictest0-21swapper/223:15:112
2894899160,1cyclictest0-21swapper/221:20:132
2894899160,15cyclictest0-21swapper/200:10:112
28947991614,1cyclictest0-21swapper/122:15:171
28947991614,1cyclictest0-21swapper/120:05:151
28947991613,2cyclictest9185-21df19:30:121
2894799160,15cyclictest502-21apache_volume23:05:111
2894799160,15cyclictest0-21swapper/122:00:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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