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2026-04-15 - 11:50
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Wed Apr 15, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25006992416,4cyclictest0-21swapper/121:37:301
25006992314,8cyclictest26847-21grep00:00:131
2500699230,3cyclictest25328-21grep23:00:001
2501199220,4cyclictest0-21swapper/221:20:012
2500699222,1cyclictest0-21swapper/100:35:011
25006992216,5cyclictest1348-21lxd00:18:451
25006992214,7cyclictest7713-21expr23:25:141
25006992214,1cyclictest0-21swapper/121:25:171
25006992213,2cyclictest10029-21latency_hist19:40:011
2500699221,19cyclictest23200-21sshd21:56:111
2500699220,2cyclictest13287-21/usr/sbin/munin20:40:201
2500699220,21cyclictest8643-21latency_hist22:30:011
2500699220,1cyclictest17642-21sed19:50:211
2500699220,16cyclictest13982-21missed_timers23:35:161
2500699220,15cyclictest3152-21apt-key20:25:031
25011992116,2cyclictest17047-21nfsd423:40:182
25006992115,5cyclictest93402sleep121:30:441
25006992115,5cyclictest0-21swapper/123:45:001
25006992115,5cyclictest0-21swapper/121:42:501
25006992114,6cyclictest33862sleep119:26:381
25006992114,6cyclictest30127-21cstates20:15:151
25006992114,6cyclictest26235-21runrttasks22:04:561
25006992114,6cyclictest26235-21runrttasks22:04:551
25006992114,1cyclictest0-21swapper/122:45:151
25006992114,1cyclictest0-21swapper/121:45:221
25006992114,1cyclictest0-21swapper/120:50:021
2500699210,2cyclictest24336-21sendmail_mailst21:00:221
2500699210,2cyclictest21113-21sed21:55:011
2500699210,20cyclictest0-21swapper/120:40:001
2500699210,1cyclictest0-21swapper/123:45:551
2500699210,1cyclictest0-21swapper/123:45:541
2500699210,1cyclictest0-21swapper/122:30:141
2500699210,1cyclictest0-21swapper/121:25:001
2500699210,1cyclictest0-21swapper/120:51:191
2500699210,1cyclictest0-21swapper/119:49:591
2500699210,1cyclictest0-21swapper/100:35:001
2500699210,16cyclictest7253-21kernelversion00:20:181
2500699210,16cyclictest32282-21cut00:10:001
2500699210,15cyclictest0-21swapper/123:10:171
2500699210,15cyclictest0-21swapper/119:41:081
25006992014,5cyclictest0-21swapper/122:35:151
25006992014,1cyclictest0-21swapper/122:20:001
25006992014,1cyclictest0-21swapper/122:10:131
25006992014,1cyclictest0-21swapper/122:05:141
25006992014,1cyclictest0-21swapper/121:00:001
25006992014,1cyclictest0-21swapper/119:17:001
25006992013,2cyclictest18759-21expr19:55:131
25006992013,1cyclictest0-21swapper/123:55:211
25006992012,2cyclictest24963-21latency20:05:171
25006992012,2cyclictest1970-21expr23:15:151
2500699200,2cyclictest6636-21expr20:30:121
2500699200,2cyclictest0-21swapper/120:00:181
2500699200,1cyclictest0-21swapper/122:50:131
2500699200,1cyclictest0-21swapper/121:05:181
2500699200,1cyclictest0-21swapper/119:20:221
2500699200,1cyclictest0-21swapper/100:10:151
2500699200,1cyclictest0-21swapper/100:10:141
2500699200,15cyclictest28433-21egrep21:10:141
2500699200,15cyclictest0-21swapper/123:30:131
2500699200,14cyclictest0-21swapper/119:30:181
25001992017,2cyclictest654-21cron19:25:000
2500199200,17cyclictest18658-21tr23:45:140
2500199200,17cyclictest18658-21tr23:45:140
2501199193,15cyclictest0-21swapper/220:51:012
25011991915,3cyclictest0-21swapper/220:41:492
2501199191,17cyclictest0-21swapper/222:45:002
25006991913,1cyclictest0-21swapper/123:50:171
25006991913,1cyclictest0-21swapper/121:15:261
25006991912,2cyclictest2773-21apt-config20:25:011
25006991912,1cyclictest0-21swapper/119:13:431
2500699190,1cyclictest0-21swapper/120:10:131
2500699190,15cyclictest16469-21sed22:40:221
2500699190,14cyclictest0-21swapper/123:21:201
2500699190,14cyclictest0-21swapper/122:20:161
2500699190,14cyclictest0-21swapper/100:25:131
2500199193,15cyclictest0-21swapper/019:41:500
25001991915,3cyclictest0-21swapper/000:20:180
2500199190,1cyclictest0-21swapper/000:28:040
2501199182,15cyclictest4099-21H222:10:212
2501199182,15cyclictest0-21swapper/223:30:312
25011991816,1cyclictest19674-21head23:45:182
25011991816,1cyclictest19674-21head23:45:182
25011991816,1cyclictest0-21swapper/200:35:592
25011991816,1cyclictest0-21swapper/200:05:152
25011991814,3cyclictest1299-21lxd20:00:012
25011991814,3cyclictest0-21swapper/219:12:432
2501199181,2cyclictest24207-21cstates22:00:132
2501199181,2cyclictest24207-21cstates22:00:132
2501199181,16cyclictest1825-21cut19:25:152
2501199181,16cyclictest0-21swapper/220:18:172
2501199180,2cyclictest14472-21latency_hist22:40:022
2501199180,17cyclictest15269-21postgres23:39:302
25006991812,1cyclictest0-21swapper/123:00:111
25001991818,0cyclictest0-21swapper/000:15:160
25001991817,1cyclictest0-21swapper/019:35:180
2500199181,16cyclictest426-21systemd-udevd00:00:520
2500199181,16cyclictest3053-21systemd-logind23:22:510
2500199180,2cyclictest8168-21python322:30:010
2500199180,17cyclictest426-21systemd-udevd23:56:510
2500199180,17cyclictest3981-21H222:10:210
2500199180,16cyclictest399-20systemd-journal21:10:020
25011991715,1cyclictest10620-21expr00:25:202
25011991715,1cyclictest0-21swapper/223:25:322
25011991715,1cyclictest0-21swapper/220:05:192
25011991714,2cyclictest2636-21apt-config00:15:002
25011991714,2cyclictest2636-21apt-config00:15:002
25011991714,2cyclictest10038-21sort20:35:182
2501199171,1cyclictest227852chrt22:55:042
2501199170,2cyclictest4746-21nfsd420:25:192
2501199170,2cyclictest29688-21grep22:10:112
2501199170,2cyclictest2772-21apache_volume22:20:122
2501199170,2cyclictest26158-21df23:00:142
2501199170,2cyclictest16830-21snapd19:35:132
2501199170,2cyclictest16625-21if_lxdbr019:50:152
2501199170,2cyclictest12374-21cron21:39:002
2501199170,2cyclictest10785-21expr19:40:142
2501199170,16cyclictest8451-21chrt00:22:332
2501199170,16cyclictest6373-21df22:25:132
2501199170,16cyclictest5262-21ls19:30:182
2501199170,16cyclictest4976-21ntp_offset00:15:192
2501199170,16cyclictest30923-21expr19:20:142
2501199170,16cyclictest29512-21nfsd423:05:172
2501199170,16cyclictest26676-21apache_volume22:05:112
2501199170,16cyclictest25420-21proc_pri23:55:202
2501199170,16cyclictest24738-21chrt21:00:342
2501199170,16cyclictest23313-21chrt20:02:112
2501199170,16cyclictest22964-21cat23:50:192
2501199170,16cyclictest21256-21grep20:55:192
2501199170,16cyclictest21139-21missed_timers22:50:172
2501199170,16cyclictest1862-21/usr/sbin/munin21:20:132
2501199170,16cyclictest1078-21polkitd22:45:212
2500199172,1cyclictest9-21ksoftirqd/020:18:290
25001991716,1cyclictest9-21ksoftirqd/019:17:450
25001991715,1cyclictest0-21swapper/019:10:100
25001991714,2cyclictest4488-21tr19:30:140
25001991714,2cyclictest3991-21H222:10:210
25001991714,2cyclictest3053-21systemd-logind22:44:510
25001991714,2cyclictest20997-21irqstats22:50:160
25001991714,2cyclictest1377-21lxd23:54:340
25001991714,2cyclictest0-21swapper/020:45:190
25001991713,3cyclictest870-21systemd-logind22:28:520
2500199171,2cyclictest30762-21nfsd400:05:190
2500199170,3cyclictest0-21swapper/021:46:170
2500199170,2cyclictest31952-21cut22:15:020
2500199170,2cyclictest28646-21cat23:05:130
2500199170,2cyclictest1351-21lxd20:20:500
2500199170,16cyclictest4873-21ntpq20:25:190
2500199170,16cyclictest4094-21sed22:20:170
2500199170,16cyclictest399-20systemd-journal22:50:010
2500199170,16cyclictest3053-21systemd-logind20:42:520
2500199170,16cyclictest27507-21fschecks_time20:10:150
2500199170,16cyclictest21827-21fschecks_count21:55:160
2500199170,16cyclictest17011-21grep00:40:000
2500199170,16cyclictest16793-21snapd21:02:480
2500199170,16cyclictest1516-21lxd20:06:500
2500199170,16cyclictest13172-21grep19:45:140
2500199170,16cyclictest12460-21perf23:35:000
2500199170,16cyclictest1079-21cups-browsed22:00:210
2500199170,16cyclictest1079-21cups-browsed22:00:210
25011991614,1cyclictest28486-21expr19:15:152
25011991614,1cyclictest0-21swapper/223:15:162
25011991614,1cyclictest0-21swapper/221:50:042
25011991614,1cyclictest0-21swapper/221:40:072
25011991614,1cyclictest0-21swapper/221:10:182
25011991614,1cyclictest0-21swapper/219:48:532
25011991614,1cyclictest0-21swapper/200:30:132
25011991613,2cyclictest7651-21cat21:30:162
2501199160,1cyclictest0-21swapper/222:15:152
2501199160,1cyclictest0-21swapper/220:10:132
2501199160,15cyclictest5364-21fschecks_time23:20:152
2501199160,15cyclictest31830-21fschecks_time23:10:142
2501199160,15cyclictest25805-21expr21:05:152
2501199160,15cyclictest0-21swapper/222:30:072
2501199160,15cyclictest0-21swapper/221:55:142
2501199160,15cyclictest0-21swapper/221:45:162
2501199160,15cyclictest0-21swapper/221:25:002
2501199160,15cyclictest0-21swapper/220:45:152
2501199160,15cyclictest0-21swapper/200:00:162
25001991614,1cyclictest5857-21nfsd421:25:170
25001991614,1cyclictest27485-21if_enp1s022:05:150
25001991614,1cyclictest0-21swapper/021:50:510
25001991614,1cyclictest0-21swapper/021:33:130
25001991614,1cyclictest0-21swapper/021:25:000
25001991614,1cyclictest0-21swapper/021:15:150
25001991614,1cyclictest0-21swapper/000:30:130
25001991614,1cyclictest0-21swapper/000:10:210
25001991614,1cyclictest0-21swapper/000:10:200
25001991613,2cyclictest2293-21fschecks_time23:15:170
2500199160,2cyclictest30203-21ls21:10:220
2500199160,2cyclictest18900-21cat19:55:140
2500199160,1cyclictest21604-21ls20:00:130
2500199160,1cyclictest0-21swapper/023:40:130
2500199160,1cyclictest0-21swapper/023:00:110
2500199160,1cyclictest0-21swapper/019:25:180
2500199160,15cyclictest8917-21/usr/sbin/munin20:35:200
2500199160,15cyclictest7405-21apache_accesses23:25:100
2500199160,15cyclictest23420-21fschecks_count22:55:140
2500199160,15cyclictest1348-21lxd20:32:510
2500199160,15cyclictest13441-21ls21:40:140
2500199160,15cyclictest10092-21apache_processe21:35:110
2500199160,15cyclictest0-21swapper/023:35:160
2500199160,15cyclictest0-21swapper/022:15:150
2500199160,15cyclictest0-21swapper/019:50:170
2500199150,1cyclictest11810-21cpuspeed_turbos22:35:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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