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2026-07-18 - 07:58
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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 Sat Jul 18, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
341306225040,7sleep50-21swapper/519:05:485
35691082460,0sleep73569111-21cut20:25:057
341305424510,30sleep70-21swapper/719:05:417
341311023726,8sleep40-21swapper/419:06:274
341311223626,7sleep60-21swapper/619:06:296
38525972290,1chrt3852598-21kthreadcore22:30:067
3413612992623,2cyclictest4063042-21kworker/u16:1+flush-8:000:29:445
3413610992624,2cyclictest3659361-21kworker/u16:0+events_unbound21:30:324
3413615992523,2cyclictest3625216-21kworker/u16:2+events_unbound21:45:236
3413612992523,2cyclictest3625216-21kworker/u16:2+flush-8:023:20:145
3413612992523,2cyclictest3625216-21kworker/u16:2+flush-8:021:09:595
3413610992523,2cyclictest3773172-21kworker/u16:0+events_unbound22:13:144
3413618992422,1cyclictest4011871-21ssh23:35:147
3413618992422,1cyclictest4011871-21ssh23:35:147
3413610992422,2cyclictest3625216-21kworker/u16:2+flush-8:021:49:384
3413610992420,3cyclictest4099937-21cat00:14:434
36669002230,0chrt0-21swapper/621:15:046
3413618992322,0cyclictest0-21swapper/720:20:177
3413612992321,2cyclictest3808419-21kworker/u16:3+flush-8:023:09:495
3413610992321,2cyclictest3611170-21kworker/u16:1+events_unbound21:25:544
3413610992321,2cyclictest3611170-21kworker/u16:1+events_unbound21:25:544
3413618992221,0cyclictest0-21swapper/719:55:187
3413612992217,4cyclictest3878788-21kworker/u16:0+flush-8:022:54:435
3413618992116,4cyclictest4039282-21ssh23:49:437
3413618992115,5cyclictest648-21systemd-journal21:39:437
3413615992119,2cyclictest4063042-21kworker/u16:1+events_unbound00:23:546
3413615992119,2cyclictest3941880-21kworker/u16:4+events_unbound23:29:376
3413615992119,2cyclictest3659361-21kworker/u16:0+events_unbound21:26:066
3413615992119,2cyclictest3659361-21kworker/u16:0+events_unbound21:26:066
3413615992117,3cyclictest3723332-21cat21:39:436
3413612992119,2cyclictest4039411-21kworker/u16:0+flush-8:023:49:495
3413610992119,2cyclictest3773172-21kworker/u16:0+events_unbound22:08:544
3413610992119,2cyclictest3625216-21kworker/u16:2+flush-8:021:14:544
3413610992119,2cyclictest3611170-21kworker/u16:1+events_unbound21:57:554
3413610992119,2cyclictest3534115-21kworker/u16:0+flush-8:020:59:384
3413615992018,2cyclictest3625216-21kworker/u16:2+events_unbound22:53:496
3413612992018,2cyclictest3808419-21kworker/u16:3+flush-8:022:44:385
3413610992018,2cyclictest3941880-21kworker/u16:4+events_unbound23:19:374
3413610992018,2cyclictest3808419-21kworker/u16:3+events_unbound23:10:494
3413610992018,2cyclictest3808419-21kworker/u16:3+events_unbound22:51:594
3413610992018,2cyclictest3808419-21kworker/u16:3+events_unbound00:06:254
3413610992018,2cyclictest3659361-21kworker/u16:0+events_unbound21:35:584
3413610992018,2cyclictest3611170-21kworker/u16:1+events_unbound22:21:594
3413610992018,2cyclictest3443623-21kworker/u16:3+events_unbound19:25:144
3413618991915,3cyclictest3437980-21iostat_ios19:19:597
3413618991915,3cyclictest3437980-21iostat_ios19:19:597
3413618991915,3cyclictest1302-21snmpd19:29:267
3413615991917,2cyclictest3941880-21kworker/u16:4+events_unbound23:20:496
3413615991917,2cyclictest3917558-21kworker/u16:1+events_unbound23:04:476
3413615991917,2cyclictest3611170-21kworker/u16:1+events_unbound22:32:296
3413615991917,2cyclictest3611170-21kworker/u16:1+events_unbound22:12:506
3413612991915,3cyclictest3592257-21cat20:39:435
3413610991917,2cyclictest4063726-21kworker/u16:2+events_unbound00:38:044
3413610991917,2cyclictest4039411-21kworker/u16:0+events_unbound23:53:254
3413610991917,2cyclictest3941880-21kworker/u16:4+events_unbound23:59:214
3413610991917,2cyclictest3808419-21kworker/u16:3+events_unbound22:41:504
3413610991917,2cyclictest3773172-21kworker/u16:0+events_unbound22:15:214
3413610991917,2cyclictest3635573-21kworker/u16:3+events_unbound21:09:454
3413610991917,2cyclictest3625216-21kworker/u16:2+events_unbound23:32:344
3413610991917,2cyclictest3625216-21kworker/u16:2+events_unbound23:27:334
3413610991917,2cyclictest3611170-21kworker/u16:1+events_unbound22:30:574
3413610991915,3cyclictest3686973-21cat21:24:434
3413610991915,3cyclictest3686973-21cat21:24:434
3413618991815,2cyclictest1302-21snmpd00:16:197
3413618991813,4cyclictest648-21systemd-journal00:34:427
3413618991811,5cyclictest648-21systemd-journal00:04:437
3413615991816,2cyclictest3808419-21kworker/u16:3+events_unbound23:36:136
3413615991816,2cyclictest3808419-21kworker/u16:3+events_unbound23:36:136
3413615991816,2cyclictest3808419-21kworker/u16:3+events_unbound00:11:266
3413615991816,2cyclictest3625216-21kworker/u16:2+events_unbound22:18:506
3413615991816,2cyclictest3611170-21kworker/u16:1+events_unbound22:27:346
3413615991816,2cyclictest3534115-21kworker/u16:0+events_unbound20:09:576
3413615991816,2cyclictest3443623-21kworker/u16:3+events_unbound20:21:546
3413615991815,2cyclictest3660749-21sh21:11:326
3413612991816,2cyclictest3374830-21kworker/u16:4+flush-8:019:14:495
3413610991816,2cyclictest4137916-21kworker/u16:0+events_unbound00:33:334
3413610991816,2cyclictest4063042-21kworker/u16:1+events_unbound00:18:534
3413610991816,2cyclictest3941880-21kworker/u16:4+events_unbound23:47:454
3413610991816,2cyclictest3941880-21kworker/u16:4+events_unbound23:21:384
3413610991816,2cyclictest3808419-21kworker/u16:3+events_unbound22:27:434
3413610991816,2cyclictest3611170-21kworker/u16:1+events_unbound22:34:494
3413610991816,2cyclictest3611170-21kworker/u16:1+events_unbound21:51:134
3413618991716,0cyclictest0-21swapper/721:10:137
3413618991714,2cyclictest1302-21snmpd22:16:197
3413618991713,3cyclictest1302-21snmpd20:05:577
3413615991715,2cyclictest3941880-21kworker/u16:4+events_unbound00:31:106
3413615991715,2cyclictest3878788-21kworker/u16:0+events_unbound22:40:436
3413615991715,2cyclictest3625216-21kworker/u16:2+events_unbound21:57:226
3413615991715,2cyclictest3625216-21kworker/u16:2+events_unbound21:41:346
3413615991715,2cyclictest3611170-21kworker/u16:1+events_unbound22:38:056
3413615991715,2cyclictest3583367-21kworker/u16:4+events_unbound20:49:536
3413615991715,2cyclictest3443623-21kworker/u16:3+events_unbound20:16:436
3413615991715,2cyclictest1603462-21kworker/u16:0+events_unbound19:11:076
3413615991714,3cyclictest3625216-21kworker/u16:2+flush-8:023:10:386
3413612991714,2cyclictest3625216-21kworker/u16:2+flush-8:022:14:445
3413612991713,3cyclictest3625216-21kworker/u16:2+flush-8:022:14:445
3413610991715,2cyclictest4063042-21kworker/u16:1+events_unbound00:26:294
3413610991715,2cyclictest4063042-21kworker/u16:1+events_unbound00:03:374
3413610991715,2cyclictest3878788-21kworker/u16:0+events_unbound22:45:054
3413610991715,2cyclictest3808419-21kworker/u16:3+events_unbound23:01:344
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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