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2026-04-20 - 04:04
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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 Mon Apr 20, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2540562960,1sleep7254057-21kthreadcore19:55:037
158003994441,2cyclictest119608-21kworker/u16:2+flush-8:019:29:394
158003994441,2cyclictest119608-21kworker/u16:2+flush-8:019:29:394
15756724333,7sleep50-21swapper/519:07:345
1493042413,31sleep70-21swapper/719:04:557
158011994037,2cyclictest824648-21kworker/u16:2+events_unbound00:24:566
158011994037,2cyclictest824648-21kworker/u16:2+events_unbound00:24:566
158009994039,1cyclictest476199-21kworker/u16:0+flush-8:022:19:395
15801699390,37cyclictest621348-21latency_hist22:44:397
158011993932,2cyclictest754850-21kworker/u16:1+events_unbound23:49:536
158016993836,1cyclictest180937-21latency_hist19:19:397
158011993836,2cyclictest363104-21kworker/u16:2+events_unbound22:05:576
158011993735,2cyclictest754850-21kworker/u16:1+events_unbound00:14:546
158011993735,2cyclictest754850-21kworker/u16:1+events_unbound00:08:256
158011993735,2cyclictest524671-21kworker/u16:1+events_unbound22:50:296
158011993735,2cyclictest476199-21kworker/u16:0+events_unbound22:47:216
158011993735,2cyclictest476199-21kworker/u16:0+events_unbound22:43:096
158011993735,2cyclictest438720-21kworker/u16:3+events_unbound22:02:486
15754723727,7sleep40-21swapper/419:07:174
158016993634,1cyclictest0-21swapper/723:50:097
15801699360,34cyclictest635-21systemd-journal22:24:397
15801699360,34cyclictest635-21systemd-journal22:24:397
158011993634,2cyclictest718182-21kworker/u16:4+flush-8:023:27:296
158011993634,2cyclictest633620-21kworker/u16:3+events_unbound23:20:136
158011993634,2cyclictest476199-21kworker/u16:0+events_unbound22:33:016
158011993634,2cyclictest476199-21kworker/u16:0+events_unbound21:52:386
158011993634,2cyclictest438720-21kworker/u16:3+events_unbound22:16:136
158011993533,2cyclictest839072-21kworker/u16:0+events_unbound00:22:336
158011993533,2cyclictest824648-21kworker/u16:2+events_unbound00:13:266
158011993533,2cyclictest633620-21kworker/u16:3+events_unbound23:03:386
158011993533,2cyclictest633620-21kworker/u16:3+events_unbound23:03:386
158011993533,2cyclictest438720-21kworker/u16:3+events_unbound21:32:566
158011993533,2cyclictest362943-21kworker/u16:1+events_unbound21:23:176
158003993533,2cyclictest476199-21kworker/u16:0+events_unbound22:30:214
158003993533,2cyclictest363104-21kworker/u16:2+flush-8:022:09:394
15745723525,7sleep60-21swapper/619:05:596
158011993432,2cyclictest839209-21kworker/u16:4+events_unbound00:32:246
158011993432,2cyclictest524671-21kworker/u16:1+events_unbound23:08:576
158011993432,2cyclictest363104-21kworker/u16:2+events_unbound22:21:246
158011993432,2cyclictest363104-21kworker/u16:2+events_unbound22:21:246
158011993431,2cyclictest363104-21kworker/u16:2+events_unbound21:41:026
4778302330,1chrt477831-21irqcore21:44:577
158011993331,2cyclictest718182-21kworker/u16:4+events_unbound23:47:016
158011993331,2cyclictest633620-21kworker/u16:3+flush-8:000:00:386
158011993331,2cyclictest438720-21kworker/u16:3+events_unbound21:47:536
158011993331,2cyclictest3639029-21kworker/u16:0+flush-8:019:14:456
158011993331,2cyclictest363104-21kworker/u16:2+events_unbound21:58:536
158011993331,2cyclictest362943-21kworker/u16:1+events_unbound21:17:416
158011993331,2cyclictest157775-21kworker/u16:3+flush-8:019:20:016
158011993230,2cyclictest416330-21kworker/u16:0+events_unbound21:26:216
158003993229,2cyclictest476199-21kworker/u16:0+events_unbound22:34:534
158003993228,3cyclictest887449-21kworker/u16:2+flush-8:000:34:584
158016993130,0cyclictest0-21swapper/722:34:497
158011993129,2cyclictest633620-21kworker/u16:3+flush-8:023:35:096
158011993129,2cyclictest476199-21kworker/u16:0+events_unbound23:16:366
158011993129,2cyclictest363104-21kworker/u16:2+events_unbound21:13:296
158011993129,2cyclictest362943-21kworker/u16:1+events_unbound21:38:186
158011993129,2cyclictest243893-21kworker/u16:4+events_unbound19:50:026
158003993129,2cyclictest718182-21kworker/u16:4+flush-8:023:29:344
158003993129,2cyclictest438720-21kworker/u16:3+events_unbound22:19:384
158003993129,2cyclictest362943-21kworker/u16:1+flush-8:021:34:494
158011993028,2cyclictest573193-21kworker/u16:4+flush-8:022:28:366
158011993028,2cyclictest476199-21kworker/u16:0+events_unbound23:12:106
158011993028,2cyclictest476199-21kworker/u16:0+events_unbound22:56:096
158011993028,2cyclictest309773-21kworker/u16:4+events_unbound20:27:456
158003993029,1cyclictest476199-21kworker/u16:0+events_unbound23:30:094
158003993027,2cyclictest324573-21kworker/u16:3+flush-8:020:45:054
8481002290,1chrt848101-21sh00:15:077
158011992927,2cyclictest573193-21kworker/u16:4+events_unbound22:38:086
158011992927,2cyclictest438720-21kworker/u16:3+events_unbound22:11:086
158011992927,2cyclictest309773-21kworker/u16:4+events_unbound20:35:506
158003992926,2cyclictest257782-21kworker/u16:0+flush-8:020:09:394
158016992823,4cyclictest635-21systemd-journal00:00:387
158011992826,2cyclictest3639029-21kworker/u16:0+events_unbound19:38:506
158011992826,2cyclictest324573-21kworker/u16:3+flush-8:020:50:096
158003992827,1cyclictest416330-21kworker/u16:0+events_unbound21:26:384
158003992826,2cyclictest3639029-21kworker/u16:0+flush-8:019:34:394
158011992725,2cyclictest887449-21kworker/u16:2+events_unbound00:38:176
158011992725,2cyclictest754850-21kworker/u16:1+events_unbound23:42:286
158011992725,2cyclictest718182-21kworker/u16:4+events_unbound23:56:246
158011992725,2cyclictest633620-21kworker/u16:3+events_unbound23:30:176
158011992725,2cyclictest309773-21kworker/u16:4+events_unbound20:41:496
158011992725,2cyclictest309773-21kworker/u16:4+events_unbound20:30:496
158011992725,2cyclictest238389-21kworker/u16:1+events_unbound20:01:446
158003992724,2cyclictest754850-21kworker/u16:1+flush-8:023:54:494
158003992724,2cyclictest362943-21kworker/u16:1+flush-8:021:19:574
158011992624,2cyclictest257782-21kworker/u16:0+flush-8:020:15:506
158003992625,1cyclictest839072-21kworker/u16:0+events_unbound00:16:574
158003992624,2cyclictest754850-21kworker/u16:1+events_unbound00:25:494
158003992624,2cyclictest754850-21kworker/u16:1+events_unbound00:25:494
158011992523,2cyclictest363104-21kworker/u16:2+events_unbound21:05:016
158003992523,2cyclictest718182-21kworker/u16:4+events_unbound23:37:054
158003992523,2cyclictest633620-21kworker/u16:3+flush-8:023:20:414
158003992523,2cyclictest633620-21kworker/u16:3+flush-8:023:05:224
158003992523,2cyclictest524671-21kworker/u16:1+events_unbound22:29:204
158003992522,2cyclictest754850-21kworker/u16:1+events_unbound00:29:414
158003992522,2cyclictest362943-21kworker/u16:1+flush-8:021:44:494
7121112240,1chrt712112-21tr23:20:017
158016992419,4cyclictest335050-21expr20:39:527
15801699240,22cyclictest635-21systemd-journal22:09:397
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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