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2025-11-02 - 19:24
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Sun Nov 02, 2025 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
79699230,5cyclictest0-21swapper/212:25:102
79199220,18cyclictest0-21swapper/110:50:111
78699220,7cyclictest823-21systemd-network07:23:520
78699220,18cyclictest0-21swapper/011:24:040
78699220,18cyclictest0-21swapper/007:38:100
79699200,19cyclictest823-21systemd-network07:26:262
78699201,18cyclictest31066-21cron09:00:010
78699200,18cyclictest8813-21smartctl12:05:180
79699192,2cyclictest9787-21latency_hist07:25:012
79699191,15cyclictest0-21swapper/209:30:152
79699190,16cyclictest4528-21H212:26:332
79199192,2cyclictest28145-21taskset08:52:401
79199192,2cyclictest28145-21taskset08:52:401
79199190,2cyclictest4526-21H212:26:331
79199190,2cyclictest27295-21grep07:55:151
79199190,16cyclictest4538-21H212:26:331
79199190,16cyclictest4530-21H212:26:331
79199190,16cyclictest4530-21H212:26:331
786991917,1cyclictest9-21ksoftirqd/009:36:170
786991917,1cyclictest0-21swapper/012:33:480
78699190,2cyclictest4536-21H212:26:330
78699190,2cyclictest4532-21H212:26:330
78699190,2cyclictest4532-21H212:26:330
78699190,18cyclictest823-21systemd-network10:29:540
78699190,16cyclictest4526-21H212:26:330
79699182,15cyclictest24972-21switchtime08:45:272
79699182,15cyclictest0-21swapper/209:07:192
796991817,1cyclictest0-21swapper/210:35:132
796991816,1cyclictest0-21swapper/212:13:472
796991814,3cyclictest4581-21H212:26:332
79699180,2cyclictest4581-21H212:26:332
79699180,2cyclictest4581-21H212:26:332
79699180,2cyclictest4538-21H212:26:332
79699180,2cyclictest4536-21H212:26:332
79699180,17cyclictest4530-21H212:26:332
79699180,17cyclictest0-21swapper/212:20:002
79699180,17cyclictest0-21swapper/210:40:222
79699180,16cyclictest4581-21H212:26:332
79699180,16cyclictest4581-21H212:26:332
79199182,15cyclictest0-21swapper/109:04:291
791991815,2cyclictest7920-21smtp11:07:241
791991815,2cyclictest6242-21chrt10:06:001
791991814,3cyclictest4581-21H212:26:331
791991814,3cyclictest4530-21H212:26:331
791991814,2cyclictest4532-21H212:26:331
791991813,3cyclictest4536-21H212:26:331
791991813,2cyclictest4530-21H212:26:331
79199181,2cyclictest995-21irqbalance10:47:121
79199180,3cyclictest31017-21lxd12:24:501
79199180,3cyclictest2907-21grep11:55:181
79199180,3cyclictest0-21swapper/112:10:191
79199180,2cyclictest4593-21H212:26:331
79199180,2cyclictest4538-21H212:26:331
79199180,2cyclictest4532-21H212:26:331
79199180,2cyclictest4530-21H212:26:331
79199180,17cyclictest4581-21H212:26:331
79199180,16cyclictest4581-21H212:26:331
79199180,16cyclictest4534-21H212:26:331
79199180,16cyclictest4526-21H212:26:331
79199180,16cyclictest4523-21H212:26:331
78699182,15cyclictest7773-21ps08:15:210
786991816,1cyclictest0-21swapper/008:34:000
786991815,2cyclictest31263-21nfsd408:00:180
786991815,2cyclictest24764-21cat12:35:170
786991815,2cyclictest22422-21nfsd410:35:190
786991814,3cyclictest4581-21H212:26:330
786991814,3cyclictest4530-21H212:26:330
786991814,3cyclictest1402-21lxd10:45:030
786991814,2cyclictest4538-21H212:26:330
786991812,1cyclictest0-21swapper/008:55:000
786991812,1cyclictest0-21swapper/008:54:590
78699181,16cyclictest4538-21H212:26:330
78699181,16cyclictest13313-21fschecks_time10:20:170
78699180,2cyclictest4532-21H212:26:330
78699180,2cyclictest4532-21H212:26:330
79699172,1cyclictest0-21swapper/209:50:122
796991715,1cyclictest180302sleep207:36:562
796991714,2cyclictest4593-21H212:26:332
796991714,2cyclictest4593-21H212:26:332
796991714,2cyclictest4536-21H212:26:332
796991714,2cyclictest31897-21/usr/sbin/munin09:00:152
796991714,2cyclictest31552-21expr11:50:152
796991714,2cyclictest26680-21latency11:40:192
796991714,2cyclictest17726-21ls08:35:152
796991714,2cyclictest1359-21ntpq10:55:182
796991714,2cyclictest10474-21ntp_states08:20:222
796991714,2cyclictest0-21swapper/210:22:572
79699171,15cyclictest0-21swapper/212:00:132
79699170,2cyclictest4538-21H212:26:332
79699170,2cyclictest4534-21H212:26:332
79699170,2cyclictest4530-21H212:26:332
79699170,2cyclictest4530-21H212:26:332
79699170,2cyclictest4530-21H212:26:332
79699170,2cyclictest3722-21timerwakeupswit11:55:222
79699170,1cyclictest4593-21H212:26:332
79699170,16cyclictest9341-21fschecks_count11:10:172
79699170,16cyclictest8357-21ls12:05:162
79699170,16cyclictest4581-21H212:26:332
79699170,16cyclictest4538-21H212:26:332
79699170,16cyclictest4536-21H212:26:332
79699170,16cyclictest4536-21H212:26:332
79699170,16cyclictest4536-21H212:26:332
79699170,16cyclictest4534-21H212:26:332
79699170,16cyclictest4532-21H212:26:332
79699170,16cyclictest4532-21H212:26:332
79699170,16cyclictest4530-21H212:26:332
79699170,16cyclictest4530-21H212:26:332
79699170,16cyclictest4530-21H212:26:332
79699170,16cyclictest4530-21H212:26:332
79699170,16cyclictest30092-21cpuspeed_turbos08:00:152
79699170,16cyclictest26010-21switchtime07:50:202
79699170,16cyclictest24844-21/usr/sbin/munin09:45:172
79699170,16cyclictest19058-21expr10:30:152
79699170,16cyclictest12521-21http_loadtime08:25:162
79699170,15cyclictest4530-21H212:26:332
791991715,1cyclictest0-21swapper/109:35:171
791991714,2cyclictest4536-21H212:26:331
791991714,2cyclictest4536-21H212:26:331
791991714,2cyclictest4532-21H212:26:331
791991714,2cyclictest4532-21H212:26:331
791991714,2cyclictest4532-21H212:26:331
791991714,2cyclictest4532-21H212:26:331
791991714,2cyclictest4530-21H212:26:331
791991714,2cyclictest30618-21fschecks_time08:00:151
791991714,2cyclictest24272-21sed08:45:211
791991714,2cyclictest11369-21cron08:25:021
791991714,2cyclictest11261-21ls07:25:171
791991713,3cyclictest4523-21H212:26:331
79199171,15cyclictest4530-21H212:26:331
79199170,2cyclictest4581-21H212:26:331
79199170,2cyclictest4581-21H212:26:331
79199170,2cyclictest4538-21H212:26:331
79199170,2cyclictest4538-21H212:26:331
79199170,2cyclictest4536-21H212:26:331
79199170,2cyclictest4532-21H212:26:331
79199170,2cyclictest17255-21/usr/sbin/munin08:35:131
79199170,2cyclictest1600-21expr07:10:141
79199170,16cyclictest4593-21H212:26:331
79199170,16cyclictest4530-21H212:26:331
79199170,16cyclictest4526-21H212:26:331
79199170,16cyclictest4526-21H212:26:331
79199170,16cyclictest4526-21H212:26:331
79199170,16cyclictest32677-21dpkg08:05:131
79199170,16cyclictest29430-21latency11:45:201
79199170,16cyclictest24542-21sed11:35:231
79199170,16cyclictest21951-21ntpq08:40:191
79199170,16cyclictest1405-21lxd11:15:041
79199170,16cyclictest12809-21cpuspeed_turbos10:20:151
78699172,15cyclictest9-21ksoftirqd/007:15:560
786991715,1cyclictest9-21ksoftirqd/012:23:010
786991715,1cyclictest40572chrt11:58:440
786991715,1cyclictest0-21swapper/009:25:180
786991714,2cyclictest9974-21nfsd411:10:210
786991714,2cyclictest7384-21cstates10:10:140
786991714,2cyclictest5525-21nfsd410:05:190
786991714,2cyclictest4530-21H212:26:330
786991714,2cyclictest4530-21H212:26:330
786991714,2cyclictest4523-21H212:26:330
786991714,2cyclictest22768-21grep07:45:170
786991714,2cyclictest20162-21grep07:40:210
786991714,2cyclictest11295-21wc12:10:170
786991714,2cyclictest10433-21run-parts07:25:010
786991713,2cyclictest4528-21H212:26:330
78699171,1cyclictest270932chrt09:49:010
78699171,1cyclictest0-21swapper/007:55:150
78699170,2cyclictest4528-21H212:26:330
78699170,2cyclictest4523-21H212:26:330
78699170,2cyclictest4073-21wc10:05:000
78699170,2cyclictest24938-21expr07:50:130
78699170,2cyclictest23942-21fschecks_count08:45:180
78699170,2cyclictest19992-21processes10:30:210
78699170,1cyclictest0-21swapper/010:40:150
78699170,16cyclictest4593-21H212:26:330
78699170,16cyclictest4593-21H212:26:330
78699170,16cyclictest4593-21H212:26:330
78699170,16cyclictest4538-21H212:26:330
78699170,16cyclictest4536-21H212:26:330
78699170,16cyclictest4526-21H212:26:330
78699170,16cyclictest3628-21cpuspeed_turbos08:10:160
78699170,16cyclictest32306-21expr09:00:140
78699170,16cyclictest31108-21latency_hist11:50:000
78699170,16cyclictest18224-21cat08:35:180
78699170,16cyclictest13815-21if_eno112:15:170
78699170,16cyclictest12842-21/usr/sbin/munin11:15:200
78699170,16cyclictest0-21swapper/011:35:140
796991614,1cyclictest0-21swapper/211:25:212
796991614,1cyclictest0-21swapper/211:25:212
796991611,2cyclictest4336-21tr07:15:172
79699160,2cyclictest23311-21needreboot09:40:182
79699160,15cyclictest4530-21H212:26:332
79699160,15cyclictest0-21swapper/210:15:142
79699160,15cyclictest0-21swapper/208:10:152
79699160,15cyclictest0-21swapper/208:05:112
79699160,15cyclictest0-21swapper/207:55:182
791991614,1cyclictest0-21swapper/110:40:121
791991614,1cyclictest0-21swapper/109:25:201
791991614,1cyclictest0-21swapper/107:50:161
791991614,1cyclictest0-21swapper/107:45:141
791991613,2cyclictest6013-21cstates09:10:141
79199161,0cyclictest0-21swapper/108:10:151
79199160,15cyclictest0-21swapper/108:30:151
786991614,1cyclictest0-21swapper/008:40:020
786991613,2cyclictest31485-21expr11:50:140
78699160,1cyclictest0-21swapper/008:05:170
78699160,15cyclictest3441-21gsd-color08:20:160
78699160,15cyclictest0-21swapper/008:25:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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