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2026-04-16 - 06:23
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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 Apr 16, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27298992818,0cyclictest0-21swapper/121:24:371
2729899257,15cyclictest0-21swapper/120:48:001
2729899257,15cyclictest0-21swapper/120:48:001
27300992323,0cyclictest0-21swapper/220:15:162
27298992314,0cyclictest0-21swapper/122:17:341
27298992314,0cyclictest0-21swapper/119:15:051
2729799230,18cyclictest0-21swapper/000:08:590
2730099220,21cyclictest843-21systemd-network19:15:512
2729899224,11cyclictest0-21swapper/120:12:561
27300992017,1cyclictest0-21swapper/223:55:152
2730099200,19cyclictest1522-21lxd19:58:492
2729799201,18cyclictest19600-21idleruntime-cro20:50:010
2729799201,18cyclictest19600-21idleruntime-cro20:50:010
2730099193,9cyclictest14138-21munin-run00:30:012
2730099193,15cyclictest0-21swapper/223:49:282
27300991916,2cyclictest8881-21basename19:35:012
2729899190,17cyclictest26714-21nfsd421:00:181
2729799191,17cyclictest0-21swapper/023:04:250
2729799190,1cyclictest0-21swapper/022:23:240
2730099189,8cyclictest14607-21cut19:45:002
2730099182,2cyclictest6225-21timerandwakeup23:15:212
2730099182,1cyclictest0-21swapper/220:25:132
2730099182,15cyclictest110822chrt22:29:232
27300991816,1cyclictest0-21swapper/222:20:012
27300991815,2cyclictest27836-21cpuspeed_turbos19:10:132
27300991815,2cyclictest20125-21cpuspeed_turbos20:50:132
2730099180,3cyclictest1517-21lxd20:36:492
2730099180,17cyclictest843-21systemd-network21:11:492
2730099180,16cyclictest16118-21nfsd419:45:182
27298991816,1cyclictest0-21swapper/123:50:391
27298991815,2cyclictest29774-21systemctl21:05:221
27298991814,1cyclictest0-21swapper/122:43:441
2729899181,16cyclictest2331-21awk23:10:151
2729899180,17cyclictest14115-21munin-run20:40:001
2729899180,15cyclictest3985-21H222:10:211
27297991816,1cyclictest24494-21fschecks_count21:55:150
27297991814,3cyclictest26254-21munin-run20:05:010
2729799181,2cyclictest5392-21sed00:10:230
27300991715,1cyclictest0-21swapper/221:15:152
27300991715,1cyclictest0-21swapper/220:15:012
27300991715,1cyclictest0-21swapper/220:04:152
27300991715,1cyclictest0-21swapper/219:35:132
27300991714,2cyclictest7361-21cpu21:25:132
27300991714,2cyclictest29983-21http_loadtime00:00:132
27300991714,2cyclictest28748-21grep23:00:152
27300991714,2cyclictest15200-21uname22:35:162
27300991714,2cyclictest13106-21expr23:30:132
27300991714,2cyclictest10736-21/usr/sbin/munin21:30:152
27300991713,3cyclictest0-21swapper/200:10:152
2730099171,15cyclictest111602sleep200:23:282
2730099170,2cyclictest9958-21ps20:30:202
2730099170,2cyclictest6754-21cut22:20:142
2730099170,2cyclictest5601-21lxd20:58:492
2730099170,2cyclictest3269-21expr20:20:142
2730099170,2cyclictest19535-21/usr/sbin/munin00:35:222
2730099170,2cyclictest16749-21snapd22:40:182
2730099170,2cyclictest1351-21lxd23:12:362
2730099170,2cyclictest13327-21expr21:35:132
2730099170,16cyclictest7684-21ls23:20:132
2730099170,16cyclictest6818-21df00:15:122
2730099170,16cyclictest3351-21lxd00:30:332
2730099170,16cyclictest32223-21grep00:05:122
2730099170,16cyclictest25739-21expr21:00:142
2730099170,16cyclictest24458-21fschecks_count21:55:142
2730099170,16cyclictest24278-21cstates23:50:132
2730099170,16cyclictest15469-21grep23:35:112
2730099170,16cyclictest11244-21awk23:25:162
2730099170,16cyclictest11244-21awk23:25:162
2729899172,9cyclictest28926-21perf22:05:001
2729899172,1cyclictest57102chrt00:13:421
27298991715,1cyclictest169742sleep119:46:481
27298991714,2cyclictest9639-21sed20:30:171
27298991714,2cyclictest8491-21nfsd423:20:171
27298991714,2cyclictest3985-21H222:10:211
27298991714,2cyclictest24995-21ls20:00:171
27298991714,2cyclictest22419-21grep23:45:171
27298991714,2cyclictest17095-21cat23:35:191
27298991714,2cyclictest1511-21seq21:15:131
27298991714,2cyclictest14277-21chrt19:42:231
27298991714,2cyclictest13542-21if_eno121:35:151
27298991714,2cyclictest11326-21awk21:30:181
2729899170,3cyclictest32208-21munin-run22:10:001
2729899170,2cyclictest8710-21ntp_states21:25:181
2729899170,2cyclictest31323-21cat23:05:141
2729899170,2cyclictest28252-21cpuspeed_turbos23:00:141
2729899170,2cyclictest27068-21sort22:55:211
2729899170,2cyclictest22568-21ls19:55:211
2729899170,2cyclictest14144-21latency_hist22:35:011
2729899170,2cyclictest13111-21ntpq00:25:171
2729899170,16cyclictest6639-21grep19:30:131
2729899170,16cyclictest6449-21date19:30:011
2729899170,16cyclictest3226-21munin-run19:25:001
2729899170,16cyclictest311-21tr22:10:131
2729899170,16cyclictest30660-21cron21:10:011
2729899170,16cyclictest28058-21ntp_offset20:05:181
2729899170,16cyclictest23848-21apache_accesses21:55:111
2729899170,16cyclictest21611-21expr21:50:111
2729899170,16cyclictest20749-21sort21:50:011
2729899170,16cyclictest20373-21gpgv19:55:011
2729899170,16cyclictest20012-21cpu20:50:131
2729899170,16cyclictest1-21systemd00:02:091
2729899170,16cyclictest1085-21gdbus00:20:201
2729899170,16cyclictest0-21swapper/122:25:111
2729799179,4cyclictest0-21swapper/020:35:010
27297991714,2cyclictest4260-21ls23:15:010
27297991714,2cyclictest30610-21cat19:15:130
27297991714,2cyclictest30380-21grep22:05:140
27297991714,2cyclictest2854-21awk21:15:180
27297991714,2cyclictest23513-21latency_hist21:55:010
27297991714,2cyclictest17729-21cpuspeed_turbos00:35:130
27297991714,2cyclictest17543-21expr22:40:120
27297991714,2cyclictest16755-21snapd20:10:180
27297991714,2cyclictest16235-21nfsd419:45:180
27297991714,2cyclictest12338-21munin-run21:35:000
27297991714,1cyclictest0-21swapper/019:25:010
27297991713,3cyclictest6796-21cron23:20:000
27297991713,3cyclictest16754-21snapd23:44:580
2729799171,1cyclictest0-21swapper/022:05:000
2729799170,2cyclictest8863-21apt19:35:010
2729799170,2cyclictest32500-21smartctl21:10:180
2729799170,2cyclictest2886-21iscsid19:50:210
2729799170,2cyclictest22150-21chrt22:48:590
2729799170,2cyclictest16964-21munin-plugin-st22:40:010
2729799170,2cyclictest13278-21systemctl00:25:190
2729799170,2cyclictest0-21swapper/021:45:120
2729799170,16cyclictest6202-21expr20:25:140
2729799170,16cyclictest5382-21perf20:25:010
2729799170,16cyclictest3984-21H222:10:210
2729799170,16cyclictest346-21cat20:15:140
2729799170,16cyclictest26854-21processes22:55:200
2729799170,16cyclictest24890-21pickup22:54:140
2729799170,16cyclictest16833-21grep21:40:160
2729799170,16cyclictest14156-21chrt19:40:460
2729799170,16cyclictest0-21swapper/022:10:130
2729799170,16cyclictest0-21swapper/020:05:220
27300991614,1cyclictest639-21/usr/sbin/munin19:20:122
27300991614,1cyclictest0-21swapper/223:40:152
27300991614,1cyclictest0-21swapper/222:50:102
27300991614,1cyclictest0-21swapper/221:20:132
27300991614,1cyclictest0-21swapper/220:45:132
27300991614,1cyclictest0-21swapper/220:45:132
27300991613,2cyclictest18056-21expr19:50:122
27300991613,2cyclictest14507-21/usr/sbin/munin20:40:172
27300991613,2cyclictest12948-21ntp_offset22:30:192
2730099160,1cyclictest0-21swapper/222:10:132
2730099160,1cyclictest0-21swapper/222:00:142
2730099160,1cyclictest0-21swapper/221:50:112
2730099160,1cyclictest0-21swapper/219:25:152
2730099160,15cyclictest20184-21/usr/sbin/munin22:45:132
2730099160,15cyclictest18478-21grep21:45:122
2730099160,15cyclictest1127-21sshd21:05:132
2730099160,15cyclictest0-21swapper/223:05:142
2730099160,15cyclictest0-21swapper/222:55:172
2730099160,15cyclictest0-21swapper/222:05:012
2730099160,15cyclictest0-21swapper/220:05:202
27298991614,1cyclictest6946-21smartctl00:15:131
27298991614,1cyclictest18334-21apache_processe23:40:101
27298991614,1cyclictest0-21swapper/122:45:111
27298991614,1cyclictest0-21swapper/122:35:201
27298991614,1cyclictest0-21swapper/121:40:131
27298991613,2cyclictest32436-21expr00:05:121
27298991613,2cyclictest17555-21postgres00:35:041
2729899160,1cyclictest0-21swapper/120:55:141
2729899160,15cyclictest7452-21switchtime20:25:211
2729899160,15cyclictest4838-21cat23:15:131
2729899160,15cyclictest3726-21idleruntime20:20:151
2729899160,15cyclictest14872-21expr20:40:131
2729899160,15cyclictest14102-21python300:30:021
2729899160,15cyclictest0-21swapper/123:55:161
2729899160,15cyclictest0-21swapper/123:30:161
2729899160,15cyclictest0-21swapper/122:50:111
2729899160,15cyclictest0-21swapper/119:35:131
27297991614,1cyclictest9-21ksoftirqd/021:25:130
27297991614,1cyclictest0-21swapper/023:25:130
27297991614,1cyclictest0-21swapper/023:25:130
27297991614,1cyclictest0-21swapper/021:35:210
27297991614,1cyclictest0-21swapper/021:20:210
27297991614,1cyclictest0-21swapper/021:05:180
27297991614,1cyclictest0-21swapper/020:50:130
27297991614,1cyclictest0-21swapper/019:55:210
27297991614,1cyclictest0-21swapper/019:35:150
27297991614,1cyclictest0-21swapper/000:00:080
2729799161,0cyclictest0-21swapper/000:20:150
2729799160,2cyclictest22455-21grep23:45:170
2729799160,1cyclictest0-21swapper/023:10:010
2729799160,1cyclictest0-21swapper/022:25:110
2729799160,15cyclictest5307-21processes19:25:210
2729799160,15cyclictest28388-21sed23:55:210
2729799160,15cyclictest11444-21apt-config20:35:020
2729799160,15cyclictest0-21swapper/023:50:170
2729799160,15cyclictest0-21swapper/023:35:130
2729799160,15cyclictest0-21swapper/023:30:140
2729799160,15cyclictest0-21swapper/023:20:150
2729799160,15cyclictest0-21swapper/022:30:140
2729799160,15cyclictest0-21swapper/022:15:140
2729799160,15cyclictest0-21swapper/021:00:150
2729799160,15cyclictest0-21swapper/020:40:160
2729799160,15cyclictest0-21swapper/019:10:130
2729799160,15cyclictest0-21swapper/000:20:000
27300991513,1cyclictest0-21swapper/221:40:162
27298991514,1cyclictest0-21swapper/122:20:191
2729799150,1cyclictest0-21swapper/000:30:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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