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2025-11-20 - 12:31
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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 Thu Nov 20, 2025 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
399086825948,7sleep50-21swapper/503:18:455
399086825948,7sleep50-21swapper/503:18:455
4000903995550,4cyclictest200216-21latency_hist07:13:417
4000901995349,3cyclictest109414-21kworker/u16:4+flush-8:006:38:416
400047825218,30sleep70-21swapper/703:23:047
400047825218,30sleep70-21swapper/703:23:047
4000900994946,3cyclictest290808-21kworker/u16:3+flush-8:008:48:405
4000901994642,3cyclictest109414-21kworker/u16:4+flush-8:007:03:416
4000900994442,2cyclictest4049775-21kworker/u16:1+flush-8:004:38:415
4000901994037,2cyclictest109414-21kworker/u16:4+events_unbound07:53:516
400022124030,7sleep40-21swapper/403:19:244
400022124030,7sleep40-21swapper/403:19:244
4000900993937,2cyclictest4171469-21kworker/u16:3+flush-8:006:24:115
400090399370,35cyclictest589235-21systemd-journal04:53:417
4000900993735,2cyclictest4171717-21kworker/u16:5+flush-8:005:31:195
4000903993631,4cyclictest4008359-21latency_hist03:48:417
4000903993629,6cyclictest589235-21systemd-journal07:08:157
4000900993634,2cyclictest4160898-21kworker/u16:0+flush-8:006:21:175
4000900993633,2cyclictest321118-21kworker/u16:1+events_unbound08:48:505
4000903993528,5cyclictest17965-21latency_hist05:43:417
4000900993533,2cyclictest3290230-21kworker/u16:4+flush-8:004:29:195
399086923525,7sleep60-21swapper/603:18:466
399086923525,7sleep60-21swapper/603:18:466
4000900993432,2cyclictest4171469-21kworker/u16:3+flush-8:007:09:515
4000900993432,2cyclictest109414-21kworker/u16:4+events_unbound06:33:515
4000900993331,2cyclictest4171717-21kworker/u16:5+events_unbound05:37:185
4000900993331,2cyclictest4171469-21kworker/u16:3+events_unbound06:09:195
4000900993331,2cyclictest4100446-21kworker/u16:0+events_unbound05:08:195
4000900993331,2cyclictest4005926-21kworker/u16:2+flush-8:003:47:515
4000900993331,2cyclictest331185-21kworker/u16:2+events_unbound08:39:155
4000900993331,2cyclictest321118-21kworker/u16:1+flush-8:008:10:505
4000900993331,2cyclictest290808-21kworker/u16:3+events_unbound08:01:515
4000900993331,2cyclictest109414-21kworker/u16:4+events_unbound06:49:515
4000900993330,2cyclictest3978854-21kworker/u16:1+flush-8:003:33:525
4000900993330,2cyclictest3290230-21kworker/u16:4+events_unbound03:57:445
4000900993230,2cyclictest4160898-21kworker/u16:0+flush-8:006:31:005
4000900993230,2cyclictest331185-21kworker/u16:2+events_unbound08:36:195
4000900993230,2cyclictest28825-21kworker/u16:2+events_unbound05:49:105
4000900993230,2cyclictest109414-21kworker/u16:4+events_unbound06:46:275
4000896993228,3cyclictest4171717-21kworker/u16:5+events_unbound05:39:004
4000903993126,4cyclictest68815-21latency_hist06:08:417
4000901993128,2cyclictest4160898-21kworker/u16:0+flush-8:006:03:406
4000900993129,2cyclictest4171469-21kworker/u16:3+flush-8:007:06:515
4000900993129,2cyclictest4171469-21kworker/u16:3+events_unbound05:40:595
4000900993129,2cyclictest4110718-21kworker/u16:4+flush-8:004:57:195
4000900993129,2cyclictest3978854-21kworker/u16:1+events_unbound03:33:035
4000900993129,2cyclictest331185-21kworker/u16:2+flush-8:008:19:195
4000900993129,2cyclictest331185-21kworker/u16:2+flush-8:008:17:265
4000900993129,2cyclictest3290230-21kworker/u16:4+events_unbound03:25:455
4000900993129,2cyclictest109414-21kworker/u16:4+events_unbound07:43:185
4000900993129,2cyclictest109414-21kworker/u16:4+events_unbound07:28:565
4000903993029,0cyclictest0-21swapper/706:59:477
4000900993028,2cyclictest4160898-21kworker/u16:0+events_unbound05:26:185
4000900993028,2cyclictest4049775-21kworker/u16:1+events_unbound05:13:005
4000900993028,2cyclictest4049775-21kworker/u16:1+events_unbound04:51:445
4000900993028,2cyclictest4049775-21kworker/u16:1+events_unbound04:23:285
4000900993028,2cyclictest230942-21kworker/u16:1+events_unbound07:34:345
4000900993028,2cyclictest109414-21kworker/u16:4+events_unbound07:56:155
4000900993027,2cyclictest3290230-21kworker/u16:4+events_unbound03:51:435
4000903992924,4cyclictest4029877-21latency_hist04:13:417
4000901992927,2cyclictest331185-21kworker/u16:2+flush-8:008:18:566
4000901992927,2cyclictest109414-21kworker/u16:4+flush-8:007:41:426
4000900992927,2cyclictest4171469-21kworker/u16:3+events_unbound07:01:115
4000900992927,2cyclictest4171469-21kworker/u16:3+events_unbound06:16:275
4000900992927,2cyclictest4160898-21kworker/u16:0+flush-8:006:04:315
4000900992927,2cyclictest4110718-21kworker/u16:4+events_unbound06:00:555
4000900992927,2cyclictest3934268-21kworker/u16:3+events_unbound04:18:235
4000900992927,2cyclictest3290230-21kworker/u16:4+flush-8:004:06:275
4000900992927,2cyclictest3290230-21kworker/u16:4+events_unbound04:12:205
4000900992927,2cyclictest290808-21kworker/u16:3+events_unbound08:30:235
4000900992927,2cyclictest109414-21kworker/u16:4+events_unbound07:26:235
4000896992926,2cyclictest109414-21kworker/u16:4+events_unbound07:28:544
4000903992827,0cyclictest0-21swapper/708:00:167
4000903992827,0cyclictest0-21swapper/707:49:187
4000901992826,2cyclictest4100446-21kworker/u16:0+flush-8:005:04:076
4000901992826,2cyclictest3934268-21kworker/u16:3+flush-8:004:39:066
4000901992825,2cyclictest4049775-21kworker/u16:1+flush-8:005:09:076
4000900992826,2cyclictest4150308-21kworker/u16:2+events_unbound05:14:175
4000900992826,2cyclictest4005926-21kworker/u16:2+flush-8:004:41:165
4000900992826,2cyclictest3934268-21kworker/u16:3+flush-8:004:46:035
4000900992826,2cyclictest109414-21kworker/u16:4+events_unbound07:44:515
4000896992825,2cyclictest4049775-21kworker/u16:1+flush-8:005:03:414
4000903992723,2cyclictest78944-21munin-run06:13:407
4000901992725,2cyclictest4005926-21kworker/u16:2+flush-8:004:44:076
4000901992723,3cyclictest230533-21kworker/u16:0+events_unbound07:29:056
4000900992725,2cyclictest4049775-21kworker/u16:1+flush-8:005:21:435
4000900992725,2cyclictest4049775-21kworker/u16:1+events_unbound04:24:365
4000900992725,2cyclictest4005926-21kworker/u16:2+events_unbound03:41:275
4000900992724,2cyclictest3290230-21kworker/u16:4+events_unbound04:02:085
4000896992724,3cyclictest4110718-21kworker/u16:4+events_unbound05:14:094
4000903992625,0cyclictest0-21swapper/704:15:437
4000900992624,2cyclictest4171469-21kworker/u16:3+flush-8:007:15:235
4000896992623,2cyclictest109414-21kworker/u16:4+events_unbound06:33:554
4000903992525,0cyclictest0-21swapper/707:54:367
4000903992524,0cyclictest0-21swapper/708:24:427
4000903992520,4cyclictest210372-21latency_hist07:18:417
4000901992523,2cyclictest290808-21kworker/u16:3+events_unbound07:59:116
4000901992522,2cyclictest3290230-21kworker/u16:4+flush-8:003:49:126
4000901992521,3cyclictest109414-21kworker/u16:4+flush-8:008:33:576
4000900992523,2cyclictest4171469-21kworker/u16:3+events_unbound05:54:545
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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