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2026-07-30 - 15:45
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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 Jul 30, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14972992826,0cyclictest0-21swapper/123:27:131
14972992726,0cyclictest0-21swapper/121:16:361
14972992725,2cyclictest0-21swapper/122:56:351
14968992721,5cyclictest21168-21iwlist22:10:150
14972992625,0cyclictest0-21swapper/123:53:501
14972992625,0cyclictest0-21swapper/100:20:101
14972992616,10cyclictest0-21swapper/123:37:381
14972992524,0cyclictest0-21swapper/123:48:361
14972992524,0cyclictest0-21swapper/123:18:131
14972992524,0cyclictest0-21swapper/100:05:141
14972992514,0cyclictest0-21swapper/100:02:521
14968992422,2cyclictest0-21swapper/021:57:060
14968992415,8cyclictest0-21swapper/022:31:380
1496899232,4cyclictest0-21swapper/023:15:000
1496899230,22cyclictest3903-21apache_accesses23:35:120
1496899230,22cyclictest10486-21nfsd421:50:150
1497699220,18cyclictest0-21swapper/222:52:222
14968992215,6cyclictest0-21swapper/022:50:180
14968992214,7cyclictest3981-21H222:10:210
14968992212,4cyclictest0-21swapper/022:05:200
1496899220,3cyclictest0-21swapper/022:04:390
1496899220,21cyclictest2189-21perf00:30:000
1496899220,21cyclictest15521-21apache_processe21:05:120
1496899220,20cyclictest3983-21H222:10:210
1496899220,1cyclictest0-21swapper/023:51:270
1496899220,1cyclictest0-21swapper/019:40:030
1496899220,1cyclictest0-21swapper/000:40:000
1496899220,16cyclictest8288-21https22:45:010
1496899220,15cyclictest0-21swapper/020:30:160
14968992115,5cyclictest2341-21smartctl23:30:180
14968992114,6cyclictest14444-21cat22:55:170
14968992114,6cyclictest13276-21ls21:00:140
14968992114,6cyclictest0-21swapper/021:11:200
14968992113,7cyclictest27079-21/usr/sbin/munin21:25:130
1496899210,2cyclictest7434-21expr23:40:100
1496899210,2cyclictest19579-21tr23:05:140
1496899210,20cyclictest9232-21vmstat20:50:230
1496899210,20cyclictest174702sleep019:13:430
1496899210,20cyclictest0-21swapper/023:45:410
1496899210,20cyclictest0-21swapper/023:20:300
1496899210,20cyclictest0-21swapper/021:16:310
1496899210,20cyclictest0-21swapper/019:55:010
1496899210,1cyclictest21600-21chrt20:16:220
1496899210,1cyclictest0-21swapper/022:35:210
1496899210,1cyclictest0-21swapper/021:30:150
1496899210,1cyclictest0-21swapper/020:43:090
1496899210,1cyclictest0-21swapper/020:25:170
1496899210,1cyclictest0-21swapper/019:45:020
1496899210,1cyclictest0-21swapper/019:36:460
1496899210,16cyclictest31256-21expr20:35:160
1496899210,16cyclictest29593-21fschecks_count22:25:150
1496899210,16cyclictest18970-21chrt20:12:370
1496899210,15cyclictest6692-21awk22:40:190
1496899210,15cyclictest26944-21fschecks_time22:20:160
1496899210,15cyclictest23641-21expr22:15:120
1496899210,15cyclictest22008-21python320:20:010
1496899210,15cyclictest0-21swapper/023:25:130
14976992018,1cyclictest0-21swapper/200:18:002
14976992011,5cyclictest0-21swapper/223:05:192
1497699200,4cyclictest0-21swapper/221:14:342
14972992017,2cyclictest3979-21H222:10:211
14972992017,2cyclictest16290-21sessionclean20:09:001
1497299200,19cyclictest0-21swapper/122:37:241
14968992014,5cyclictest0-21swapper/021:40:120
14968992014,5cyclictest0-21swapper/019:20:130
14968992012,4cyclictest0-21swapper/021:35:170
1496899200,1cyclictest0-21swapper/020:08:320
1496899200,19cyclictest6889-21perf20:50:000
1496899200,19cyclictest0-21swapper/023:15:110
1496899200,19cyclictest0-21swapper/023:01:100
1496899200,19cyclictest0-21swapper/021:45:560
1496899200,19cyclictest0-21swapper/021:20:190
1496899200,19cyclictest0-21swapper/020:55:170
1496899200,19cyclictest0-21swapper/019:25:150
1496899200,19cyclictest0-21swapper/019:15:160
1496899200,19cyclictest0-21swapper/000:32:080
1496899200,19cyclictest0-21swapper/000:11:520
1496899200,19cyclictest0-21swapper/000:05:370
1496899200,19cyclictest0-21swapper/000:00:230
1496899200,14cyclictest0-21swapper/023:55:160
14976991916,2cyclictest18676-21nfsd422:05:152
14976991916,2cyclictest13803-21processes23:50:192
14976991916,2cyclictest0-21swapper/223:17:082
1497699190,3cyclictest0-21swapper/220:21:082
1497699190,18cyclictest843-21systemd-network20:35:182
1497699190,18cyclictest24797-21cupsd20:02:152
1497699190,16cyclictest4035-21H222:10:212
1497299192,2cyclictest0-21swapper/100:27:221
14972991917,1cyclictest0-21swapper/120:51:591
14972991914,3cyclictest0-21swapper/119:10:171
1497299190,1cyclictest0-21swapper/120:58:161
1496899190,1cyclictest0-21swapper/020:00:170
1496899190,18cyclictest0-21swapper/019:55:180
1496899190,18cyclictest0-21swapper/019:55:180
1496899190,18cyclictest0-21swapper/019:30:210
1497699183,1cyclictest29568-21ntp_kernel_pll_20:30:192
1497699183,15cyclictest28-21ksoftirqd/223:31:172
14976991817,1cyclictest28-21ksoftirqd/200:09:332
14976991816,1cyclictest28-21ksoftirqd/223:48:112
14976991816,1cyclictest28-21ksoftirqd/221:38:212
14976991816,1cyclictest0-21swapper/220:59:282
1497699180,2cyclictest4099-21H222:10:212
1497699180,2cyclictest29423-21http21:30:002
1497699180,16cyclictest3981-21H222:10:212
1497699180,15cyclictest0-21swapper/200:28:402
1497299182,15cyclictest25504-21nfsd421:20:191
1497299182,15cyclictest0-21swapper/119:55:131
1497299182,15cyclictest0-21swapper/119:55:131
1497299182,15cyclictest0-21swapper/119:15:151
14972991815,2cyclictest3976-21H222:10:211
14972991814,3cyclictest2268-21cron19:45:011
14972991814,3cyclictest10884-21ls21:50:171
1497299181,2cyclictest0-21swapper/121:55:131
1497299180,2cyclictest3985-21H222:10:211
1497299180,2cyclictest3979-21H222:10:211
1497299180,15cyclictest3976-21H222:10:211
14976991714,2cyclictest9686-21grep19:55:192
14976991714,2cyclictest9686-21grep19:55:192
14976991714,2cyclictest8404-21pzem_power23:40:172
14976991714,2cyclictest3976-21H222:10:212
14976991714,2cyclictest3976-21H222:10:212
14976991714,2cyclictest3398-21timerandwakeup20:40:242
14976991714,2cyclictest16497-21smartctl23:55:212
14976991714,2cyclictest1515-21lxd21:06:532
1497699170,2cyclictest843-21systemd-network21:22:392
1497699170,2cyclictest6918-21sed20:50:012
1497699170,2cyclictest3989-21H222:10:212
1497699170,2cyclictest3707-21master20:08:402
1497699170,2cyclictest22143-21apt-config20:20:012
1497699170,2cyclictest21315-21cmp21:15:012
1497699170,1cyclictest0-21swapper/221:40:062
1497699170,16cyclictest9994-21pzem_energy22:45:202
1497699170,16cyclictest6522-21apache_processe21:45:112
1497699170,16cyclictest5406-21/usr/sbin/munin23:35:192
1497699170,16cyclictest32528-21cat19:40:142
1497699170,16cyclictest32215-21expr22:30:142
1497699170,16cyclictest30486-21memory00:20:172
1497699170,16cyclictest30143-21apache_accesses21:30:102
1497699170,16cyclictest29152-21cpuspeed_turbos22:25:132
1497699170,16cyclictest26218-21/usr/sbin/munin19:30:182
1497699170,16cyclictest21130-21cat19:20:142
1497699170,16cyclictest20485-21cpuspeed_turbos22:10:132
1497699170,16cyclictest0-21swapper/223:20:162
1497699170,16cyclictest0-21swapper/222:20:182
1497699170,16cyclictest0-21swapper/200:10:222
1497699170,15cyclictest0-21swapper/223:25:082
14972991714,2cyclictest19423-21taskset22:05:321
14972991714,2cyclictest11729-21ls20:00:131
14972991713,3cyclictest3981-21H222:10:211
1497299170,2cyclictest7729-21nfsd421:45:191
1497299170,2cyclictest3987-21H222:10:211
1497299170,2cyclictest3976-21H222:10:211
1497299170,2cyclictest32310-21fschecks_count22:30:131
1497299170,2cyclictest2748-21nfsd420:40:201
1497299170,2cyclictest19005-21dump-pmu-power23:05:011
1497299170,2cyclictest15945-21lxd20:12:531
1497299170,1cyclictest0-21swapper/121:29:561
1497299170,16cyclictest8489-21cpu22:45:141
1497299170,16cyclictest842-21cron20:39:011
1497299170,16cyclictest8242-21ntpq23:40:151
1497299170,16cyclictest8219-21sshd00:38:321
1497299170,16cyclictest4272-21ntpq00:30:191
1497299170,16cyclictest32194-21sshd21:31:461
1497299170,16cyclictest31918-21apt-key19:40:011
1497299170,16cyclictest29047-21grep22:25:141
1497299170,16cyclictest27372-21fschecks_time00:15:161
1497299170,16cyclictest2712-21apache_processe19:45:111
1497299170,16cyclictest25514-21python322:20:001
1497299170,16cyclictest22921-21grep20:20:141
1497299170,16cyclictest19867-21ps21:10:211
1497299170,16cyclictest19834-21expr23:05:141
1497299170,16cyclictest1820-21/usr/sbin/munin23:30:151
1497299170,16cyclictest16416-21interrupts21:05:181
1497299170,16cyclictest1035-21thermald22:00:201
1497299170,16cyclictest0-21swapper/122:20:211
14976991614,1cyclictest0-21swapper/222:35:012
14976991614,1cyclictest0-21swapper/219:28:002
14976991614,1cyclictest0-21swapper/219:10:122
14976991613,2cyclictest6026-21cat19:50:162
14976991613,2cyclictest5337-21apache_processe22:40:132
14976991613,2cyclictest13372-21/usr/sbin/munin21:00:152
1497699160,2cyclictest23079-21apache_volume22:15:112
1497699160,1cyclictest7286-21apache_processe20:50:122
1497699160,1cyclictest29339-21ls19:35:142
1497699160,1cyclictest0-21swapper/222:55:242
1497699160,15cyclictest17268-21df23:00:152
1497699160,15cyclictest0-21swapper/221:55:572
1497699160,15cyclictest0-21swapper/220:25:112
1497699160,15cyclictest0-21swapper/220:10:142
1497699160,15cyclictest0-21swapper/219:45:132
14972991614,1cyclictest0-21swapper/122:40:221
14972991614,1cyclictest0-21swapper/122:10:121
14972991614,1cyclictest0-21swapper/120:45:221
14972991614,1cyclictest0-21swapper/119:30:161
1497299160,15cyclictest3695-21taskset21:40:091
1497299160,15cyclictest23950-21cat19:25:141
1497299160,15cyclictest21376-21fschecks_count19:20:151
1497299160,15cyclictest11846-21fschecks_time22:50:151
1497299160,15cyclictest0-21swapper/121:00:131
1497299160,15cyclictest0-21swapper/119:50:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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