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2026-07-14 - 13:15
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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 Jul 14, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
325708925746,8sleep50-21swapper/507:08:095
325692825520,30sleep70-21swapper/707:05:547
325694623929,7sleep60-21swapper/607:06:096
3257508993331,1cyclictest0-21swapper/711:29:577
3257499993229,2cyclictest3915170-21kworker/u16:2+events_unbound12:05:114
3257502993129,2cyclictest3416929-21kworker/u16:2+flush-8:008:40:135
3257502993129,2cyclictest3416929-21kworker/u16:2+flush-8:008:40:135
3257502992826,2cyclictest3358725-21kworker/u16:0+flush-8:008:15:275
325629622815,8sleep40-21swapper/407:05:274
33982852270,1chrt3398284-21gltestperf08:20:104
3257499992724,2cyclictest3689881-21kworker/u16:2+events_unbound11:00:114
35299942260,0chrt3529992-21sh09:22:237
3257504992624,2cyclictest3766558-21kworker/u16:0+events_unbound11:20:126
3257502992624,2cyclictest3766558-21kworker/u16:0+flush-8:011:40:215
3257502992622,3cyclictest3518272-21packagekitd09:18:495
3257502992523,2cyclictest3209246-21kworker/u16:0+flush-8:007:30:105
3257504992422,2cyclictest3267071-21kworker/u16:1+flush-8:008:29:526
3257504992420,3cyclictest3754062-21latency_hist10:54:576
3257504992420,3cyclictest3754062-21latency_hist10:54:576
3257502992422,2cyclictest3689881-21kworker/u16:2+events_unbound11:10:265
3257502992422,2cyclictest3581353-21kworker/u16:1+flush-8:010:00:105
3257502992422,2cyclictest3531846-21kworker/u16:2+events_unbound10:10:115
3257502992422,2cyclictest3291478-21kworker/u16:2+flush-8:007:55:255
3257502992321,2cyclictest3839921-21kworker/u16:1+events_unbound11:35:275
3257502992321,2cyclictest3839921-21kworker/u16:1+events_unbound11:30:125
3257504992220,2cyclictest3890123-21kworker/u16:4+events_unbound11:55:216
3257504992220,2cyclictest3655489-21kworker/u16:1+events_unbound10:35:196
3257504992220,2cyclictest3333263-21kworker/u16:3+flush-8:007:49:526
3257502992220,2cyclictest3717165-21kworker/u16:3+events_unbound10:45:255
3257502992220,2cyclictest3518386-21kworker/u16:6+flush-8:010:25:125
3257502992220,2cyclictest3333263-21kworker/u16:3+events_unbound08:55:125
3257502992220,2cyclictest3333263-21kworker/u16:3+events_unbound08:25:125
3257502992220,2cyclictest3291478-21kworker/u16:2+flush-8:007:25:265
3257502992218,3cyclictest3939424-21cat12:09:515
3257504992118,2cyclictest3291478-21kworker/u16:2+events_unbound07:30:116
3257504992117,3cyclictest3791196-21cat11:09:576
3257502992119,2cyclictest3915170-21kworker/u16:2+flush-8:012:15:175
3257502992119,2cyclictest3890123-21kworker/u16:4+flush-8:011:50:125
3257502992119,2cyclictest3689881-21kworker/u16:2+events_unbound11:20:035
3257502992119,2cyclictest3358725-21kworker/u16:0+flush-8:008:20:205
325750899200,18cyclictest3976651-21sh12:24:567
3257504992018,2cyclictest3886949-21kworker/u16:1+events_unbound12:39:516
3257504992018,2cyclictest3839921-21kworker/u16:1+events_unbound11:35:176
3257502992018,2cyclictest3886949-21kworker/u16:1+events_unbound12:29:515
3257502992018,2cyclictest3518386-21kworker/u16:6+events_unbound10:20:265
3257499992016,3cyclictest3964241-21awk12:19:564
325750899190,17cyclictest1302-21snmpd11:44:177
3257504991916,2cyclictest3886949-21kworker/u16:1+flush-8:012:25:026
3257504991916,2cyclictest3516493-21kworker/u16:0+events_unbound09:25:006
3257502991917,2cyclictest3890123-21kworker/u16:4+flush-8:012:30:255
3257502991917,2cyclictest3890123-21kworker/u16:4+events_unbound12:35:155
3257502991917,2cyclictest3531846-21kworker/u16:2+flush-8:010:05:075
3257502991917,2cyclictest3518386-21kworker/u16:6+flush-8:009:30:235
3257502991917,2cyclictest3518384-21kworker/u16:4+flush-8:009:36:275
3257502991917,2cyclictest3518384-21kworker/u16:4+flush-8:009:25:285
3257502991915,3cyclictest3890000-21latency_hist11:49:575
3257499991915,3cyclictest3580991-21latency_hist09:44:574
37164072180,1sleep40-21swapper/410:39:054
325750899180,17cyclictest0-21swapper/709:18:567
3257502991816,2cyclictest3689881-21kworker/u16:2+flush-8:011:00:195
3257502991816,2cyclictest3358725-21kworker/u16:0+events_unbound08:05:125
3257502991815,2cyclictest3518386-21kworker/u16:6+flush-8:009:45:035
3257499991814,3cyclictest3494233-21latency_hist09:09:574
3257499991813,4cyclictest3518272-21packagekitd09:19:094
3257508991716,0cyclictest0-21swapper/710:56:037
3257508991716,0cyclictest0-21swapper/710:56:037
3257508991714,2cyclictest3939478-21turbostat12:09:567
3257508991713,3cyclictest1302-21snmpd08:38:227
3257508991713,3cyclictest1302-21snmpd07:59:547
325750899170,11cyclictest0-21swapper/712:10:217
3257504991715,2cyclictest3518384-21kworker/u16:4+flush-8:009:40:216
325750499170,3cyclictest3966659-21kthreadcore12:20:156
3257502991715,2cyclictest3689881-21kworker/u16:2+events_unbound10:54:485
3257502991715,2cyclictest3689881-21kworker/u16:2+events_unbound10:54:485
3257502991715,2cyclictest3358725-21kworker/u16:0+flush-8:008:00:155
3257502991715,2cyclictest3209246-21kworker/u16:0+flush-8:007:15:035
3257499991712,4cyclictest3877648-21awk11:44:574
38156432160,1sleep5741rcuc/511:19:375
325750899167,8cyclictest5861-21gmain12:30:187
3257508991612,3cyclictest1302-21snmpd12:03:127
325750899160,1cyclictest0-21swapper/710:40:227
325750899160,1cyclictest0-21swapper/707:25:237
325750899160,14cyclictest0-21swapper/711:35:227
325750899160,14cyclictest0-21swapper/707:45:247
3257504991614,2cyclictest3890123-21kworker/u16:4+events_unbound12:10:146
3257504991614,2cyclictest3267071-21kworker/u16:1+events_unbound08:15:126
3257504991613,2cyclictest3267071-21kworker/u16:1+flush-8:008:40:236
3257504991613,2cyclictest3267071-21kworker/u16:1+flush-8:008:40:236
3257502991615,1cyclictest0-21swapper/507:35:215
3257502991614,2cyclictest3890123-21kworker/u16:4+events_unbound12:02:275
3257502991614,2cyclictest3741857-21kworker/u16:4+events_unbound10:55:335
3257502991614,2cyclictest3741857-21kworker/u16:4+events_unbound10:55:335
3257502991614,2cyclictest3689881-21kworker/u16:2+events_unbound10:39:595
3257502991614,2cyclictest3655489-21kworker/u16:1+events_unbound10:17:485
3257502991614,2cyclictest3630765-21kworker/u16:0+flush-8:010:35:495
3257502991614,2cyclictest3518384-21kworker/u16:4+flush-8:009:50:375
3257502991614,2cyclictest3333263-21kworker/u16:3+events_unbound09:13:385
3257502991614,2cyclictest3209246-21kworker/u16:0+events_unbound07:10:045
3257502991612,2cyclictest3886949-21kworker/u16:1+events_unbound11:55:315
3257502991612,2cyclictest3516493-21kworker/u16:0+events_unbound09:21:455
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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