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2025-12-28 - 02:23
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Sat Dec 27, 2025 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23411992322,1cyclictest9-21ksoftirqd/010:25:130
2341399220,17cyclictest0-21swapper/210:27:452
23413992117,3cyclictest0-21swapper/212:31:502
2341299210,5cyclictest0-21swapper/108:15:221
2341199210,20cyclictest0-21swapper/011:17:510
23413992017,2cyclictest4035-21H222:10:212
2341299202,3cyclictest0-21swapper/107:41:091
2341299202,16cyclictest0-21swapper/112:31:491
2341299202,11cyclictest13881-21python309:45:001
2341299201,18cyclictest12689-21munin-run08:45:011
2341299200,19cyclictest12884-21date10:40:001
23411992015,3cyclictest0-21swapper/011:23:570
2341199201,17cyclictest9119-21grep11:30:130
23413991915,3cyclictest12600-21latency_hist10:40:002
2341399190,4cyclictest10788-21taskset07:42:102
2341299198,10cyclictest0-21swapper/111:35:161
23412991910,8cyclictest870-21systemd-logind10:56:521
2341299190,2cyclictest4099-21H222:10:211
2341299190,2cyclictest4035-21H222:10:211
2341299190,16cyclictest4099-21H222:10:211
2341299190,16cyclictest3976-21H222:10:211
2341199194,1cyclictest101rcuc/009:42:130
2341199192,1cyclictest0-21swapper/008:35:120
2341199192,16cyclictest29603-21cut11:10:000
2341199190,4cyclictest3076-21iscsid11:29:090
2341199190,17cyclictest3981-21H222:10:210
23413991818,0cyclictest0-21swapper/208:40:162
23413991816,1cyclictest24860-21taskset10:01:362
23413991816,1cyclictest0-21swapper/210:43:572
23413991816,1cyclictest0-21swapper/209:29:032
23413991815,2cyclictest3053-21systemd-logind10:48:522
23413991815,2cyclictest3053-21systemd-logind10:48:522
23413991815,2cyclictest21201-21apache_processe10:55:122
23413991814,3cyclictest870-21systemd-logind11:36:512
23413991814,3cyclictest26617-21fschecks_time12:00:152
2341399181,1cyclictest0-21swapper/208:24:592
2341399181,16cyclictest4618-21cut08:30:012
2341399180,2cyclictest3985-21H222:10:212
2341399180,2cyclictest3985-21H222:10:212
2341399180,2cyclictest3981-21H222:10:212
2341399180,17cyclictest0-21swapper/211:40:162
2341399180,16cyclictest3976-21H222:10:212
2341399180,15cyclictest3987-21H222:10:212
2341299183,1cyclictest3990-21H222:10:211
2341299182,1cyclictest25944-21uptime09:05:211
2341299182,15cyclictest9696-21sessionclean08:38:591
23412991816,1cyclictest28440-21ntp_kernel_err11:05:171
23412991816,1cyclictest21-21ksoftirqd/112:39:591
23412991816,1cyclictest0-21swapper/107:18:591
23412991814,3cyclictest3987-21H222:10:211
23412991814,2cyclictest3987-21H222:10:211
23412991813,4cyclictest843-21systemd-network09:46:171
2341299180,2cyclictest3983-21H222:10:211
2341299180,2cyclictest3976-21H222:10:211
2341299180,2cyclictest17268-21processes10:45:191
2341299180,2cyclictest17268-21processes10:45:191
2341299180,17cyclictest4099-21H222:10:211
2341299180,17cyclictest1085-21gdbus11:55:201
2341299180,17cyclictest0-21swapper/107:37:011
2341299180,15cyclictest3991-21H222:10:211
2341199183,1cyclictest9-21ksoftirqd/008:01:130
2341199182,1cyclictest0-21swapper/009:00:170
2341199182,1cyclictest0-21swapper/009:00:170
2341199182,15cyclictest9-21ksoftirqd/012:19:320
2341199182,15cyclictest9-21ksoftirqd/011:05:000
23411991816,1cyclictest9-21ksoftirqd/007:57:010
23411991815,2cyclictest26616-21tlsmgr11:49:050
23411991815,2cyclictest17097-21nfsd410:45:180
23411991815,2cyclictest17097-21nfsd410:45:180
23411991814,1cyclictest0-21swapper/008:08:320
2341199181,3cyclictest6690-21cat07:35:160
2341199181,16cyclictest11726-21egrep11:35:140
2341199180,3cyclictest25750-21grep10:05:150
2341199180,3cyclictest20679-21fschecks_count09:55:160
2341199180,2cyclictest3985-21H222:10:210
2341199180,1cyclictest3981-21H222:10:210
2341199180,1cyclictest0-21swapper/012:00:060
2341199180,17cyclictest101rcuc/008:58:420
2341199180,16cyclictest1351-21lxd08:50:400
2341199180,15cyclictest0-21swapper/010:21:210
23413991715,1cyclictest28-21ksoftirqd/209:01:482
23413991715,1cyclictest28-21ksoftirqd/209:01:482
23413991715,1cyclictest0-21swapper/209:23:542
23413991714,2cyclictest629-21expr11:15:172
23413991714,2cyclictest30220-21pzem_power12:05:212
23413991714,2cyclictest29797-21df07:20:162
23413991714,2cyclictest28176-21timerandwakeup07:15:232
23413991714,2cyclictest18358-21sed09:50:172
23413991714,2cyclictest17412-21tr11:45:162
23413991714,2cyclictest15457-21timerandwakeup12:35:212
23413991714,2cyclictest14868-21cpuspeed_turbos09:45:142
23413991713,3cyclictest3979-21H222:10:212
23413991713,3cyclictest3976-21H222:10:212
2341399171,1cyclictest0-21swapper/209:40:012
2341399170,2cyclictest5557-21expr12:20:152
2341399170,2cyclictest3981-21H222:10:212
2341399170,2cyclictest3979-21H222:10:212
2341399170,2cyclictest32244-21latency_hist09:20:002
2341399170,2cyclictest29150-21http_loadtime10:10:162
2341399170,2cyclictest18437-21cut08:55:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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