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2025-12-30 - 19:48
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack0slot2.osadl.org (updated Tue Dec 30, 2025 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14435822950,1sleep5741rcuc/510:29:105
104401025646,7sleep60-21swapper/607:05:366
104406525343,7sleep40-21swapper/407:06:224
104401125318,31sleep70-21swapper/707:05:377
1044511994542,2cyclictest971236-21kworker/u16:4+flush-8:007:23:484
1044511994038,2cyclictest1221558-21kworker/u16:5+events_unbound08:38:484
104420923928,8sleep50-21swapper/507:08:245
1044519993731,5cyclictest1232485-21latency_hist08:43:487
1044516993634,2cyclictest1572048-21kworker/u16:1+flush-8:012:34:015
1044516993533,2cyclictest1251509-21kworker/u16:0+events_unbound11:59:095
1044516993432,2cyclictest1136651-21kworker/u16:4+flush-8:008:09:145
1044516993431,2cyclictest1041113-21kworker/u16:0+events_unbound07:19:025
1044519993329,3cyclictest650-21systemd-journal12:03:477
1044518993330,2cyclictest1067549-21kworker/u16:2+flush-8:007:59:036
1044516993331,2cyclictest1251509-21kworker/u16:0+flush-8:009:43:485
1044511993331,2cyclictest1251509-21kworker/u16:0+flush-8:010:18:474
1044511993331,2cyclictest1251509-21kworker/u16:0+flush-8:010:18:474
1044518993229,2cyclictest1236790-21kworker/u16:2+flush-8:009:29:136
1044516993229,2cyclictest1173946-21kworker/u16:1+events_unbound08:39:065
1044511993230,2cyclictest1251509-21kworker/u16:0+flush-8:010:13:474
10649022300,1chrt1064901-21cut07:14:107
1044518993027,2cyclictest1251509-21kworker/u16:0+flush-8:010:54:136
1044511992825,2cyclictest1650889-21kworker/u16:2+flush-8:012:34:124
1044518992724,2cyclictest971236-21kworker/u16:4+flush-8:007:09:056
1044516992724,2cyclictest1096740-21kworker/u16:0+events_unbound07:54:035
1044511992725,2cyclictest1426200-21kworker/u16:1+flush-8:010:33:434
1044516992624,2cyclictest1508583-21kworker/u16:3+events_unbound11:04:105
1044516992624,2cyclictest1465560-21kworker/u16:4+flush-8:012:04:075
1044516992624,2cyclictest1446134-21kworker/u16:3+flush-8:010:39:135
1044516992623,2cyclictest1523549-21kworker/u16:2+events_unbound11:14:065
1044511992623,2cyclictest1261769-21kworker/u16:1+flush-8:008:59:054
1044511992622,3cyclictest1251509-21kworker/u16:0+flush-8:010:19:054
1044511992521,3cyclictest971236-21kworker/u16:4+flush-8:007:14:144
13018942240,1chrt0-21swapper/409:19:064
1044511992421,2cyclictest1523549-21kworker/u16:2+events_unbound11:19:024
1044511992421,2cyclictest1465560-21kworker/u16:4+events_unbound12:19:134
1044511992420,3cyclictest1236790-21kworker/u16:2+flush-8:009:09:054
15963962230,1chrt0-21swapper/611:49:086
15963962230,1chrt0-21swapper/611:49:086
10842572230,1chrt0-21swapper/507:24:095
1044511992320,2cyclictest1251509-21kworker/u16:0+events_unbound10:44:144
1044518992220,1cyclictest0-21swapper/610:09:486
1044511992220,2cyclictest1251509-21kworker/u16:0+events_unbound10:58:424
1044511992220,2cyclictest1067549-21kworker/u16:2+flush-8:007:44:194
1044518992115,6cyclictest0-21swapper/609:59:486
1044516992119,2cyclictest1236790-21kworker/u16:2+events_unbound08:44:135
1044511992118,2cyclictest1251509-21kworker/u16:0+flush-8:009:14:194
1044516992016,3cyclictest1610853-21pool-/usr/libex11:58:445
1044511992018,2cyclictest1251509-21kworker/u16:0+flush-8:009:54:144
12130872190,0sleep40-21swapper/408:33:474
1044519991917,1cyclictest1280972-21munin-run09:08:487
1044516991917,2cyclictest1465560-21kworker/u16:4+flush-8:012:19:195
1044516991917,2cyclictest1067549-21kworker/u16:2+events_unbound07:39:145
1044516991916,2cyclictest1194033-21kworker/u16:0+events_unbound08:24:135
1044519991815,2cyclictest1267-21snmpd12:33:077
1044519991814,3cyclictest1271429-21latency_hist09:03:487
1044516991816,2cyclictest1436383-21kworker/u16:2+flush-8:011:00:545
1044516991816,2cyclictest1251509-21kworker/u16:0+events_unbound09:29:065
1044516991814,3cyclictest1465560-21kworker/u16:4+events_unbound12:14:005
1044511991816,2cyclictest1221558-21kworker/u16:5+events_unbound08:54:054
1044511991815,2cyclictest1465560-21kworker/u16:4+flush-8:011:58:574
14524272170,0sleep71452428-21grep10:34:097
1044519991713,3cyclictest1267-21snmpd08:26:367
1044518991715,2cyclictest1290353-21kworker/u16:3+flush-8:009:54:216
1044518991715,2cyclictest1041113-21kworker/u16:0+flush-8:007:14:196
1044516991715,2cyclictest1041113-21kworker/u16:0+events_unbound07:14:035
1044516991714,2cyclictest1339166-21kworker/u16:4+flush-8:010:24:075
1044516991614,2cyclictest1290353-21kworker/u16:3+events_unbound09:54:015
1044516991613,2cyclictest1572048-21kworker/u16:1+events_unbound12:09:015
1044511991614,2cyclictest1067549-21kworker/u16:2+events_unbound07:59:104
1044519991512,2cyclictest0-21swapper/707:39:117
1044519991511,3cyclictest1267-21snmpd11:00:297
1044519991511,3cyclictest1267-21snmpd09:39:147
1044519991511,3cyclictest1165728-21cat08:09:047
104451999151,12cyclictest1076342-21ntpq07:19:147
1044519991510,4cyclictest1581800-21latency_hist11:43:477
1044519991510,4cyclictest1523509-21latency_hist11:13:487
104451999150,13cyclictest1467682-21grep10:44:067
1044518991514,1cyclictest0-21swapper/608:59:116
1044518991513,2cyclictest1465560-21kworker/u16:4+events_unbound11:58:446
104451899150,14cyclictest0-21swapper/609:08:586
1044516991513,2cyclictest1236790-21kworker/u16:2+flush-8:008:54:195
1044511991512,2cyclictest1339166-21kworker/u16:4+flush-8:009:59:194
104451999149,4cyclictest1126926-21cat07:49:037
104451999149,4cyclictest1126926-21cat07:49:037
104451999148,5cyclictest1426302-21latency_hist10:23:487
104451999146,7cyclictest0-21swapper/712:25:107
1044519991411,2cyclictest1367170-21ntpq09:49:167
1044519991411,2cyclictest0-21swapper/710:29:137
1044519991410,3cyclictest1153940-21ntpq07:59:167
1044519991410,2cyclictest1542968-21munin-run11:23:477
104451999140,4cyclictest1610837-21pool-gnome-soft11:58:417
104451999140,13cyclictest1436015-21turbostat10:28:477
104451999140,12cyclictest1144219-21ntpq07:54:137
1044516991413,1cyclictest0-21swapper/508:29:105
1044516991412,2cyclictest1650889-21kworker/u16:2+flush-8:012:29:045
1044516991412,2cyclictest1465560-21kworker/u16:4+flush-8:011:49:125
1044516991412,2cyclictest1465560-21kworker/u16:4+flush-8:011:49:125
1044516991412,2cyclictest1290353-21kworker/u16:3+flush-8:009:48:435
1044516991412,2cyclictest1236790-21kworker/u16:2+events_unbound09:24:055
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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