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2025-12-01 - 19:13
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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 Dec 01, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2611967996357,5cyclictest589235-21systemd-journal17:29:377
261158625420,30sleep70-21swapper/715:22:317
2611967994943,5cyclictest2898545-21latency_hist17:42:557
2611967994943,5cyclictest2898545-21latency_hist17:42:557
261161524838,7sleep40-21swapper/415:22:534
2611967994746,0cyclictest0-21swapper/719:33:077
2611967994641,4cyclictest2767182-21latency_hist16:37:567
261143324636,7sleep60-21swapper/615:20:226
2611967994539,4cyclictest2868107-21latency_hist17:27:557
2611966994341,2cyclictest2878036-21kworker/u16:3+events_unbound18:41:516
2611966994341,2cyclictest2666231-21kworker/u16:1+events_unbound16:08:286
2611966994341,2cyclictest2666231-21kworker/u16:1+events_unbound16:08:286
2611957994139,2cyclictest2878036-21kworker/u16:3+flush-8:017:34:484
2611967994035,4cyclictest3151759-21latency_hist19:47:557
2611966993937,2cyclictest3160963-21kworker/u16:3+flush-8:020:01:086
2611966993937,2cyclictest3121334-21kworker/u16:4+flush-8:019:48:206
2611966993937,2cyclictest2716619-21kworker/u16:3+events_unbound16:25:366
2611957993937,2cyclictest2878036-21kworker/u16:3+flush-8:017:51:234
261148023929,7sleep50-21swapper/515:21:015
261196799380,36cyclictest3106458-21grep19:23:157
2611966993836,2cyclictest2918981-21kworker/u16:7+flush-8:019:23:206
2611966993836,2cyclictest2878089-21kworker/u16:6+flush-8:018:15:556
2611966993836,2cyclictest2571339-21kworker/u16:6+flush-8:015:40:346
2611966993735,2cyclictest2726410-21kworker/u16:4+flush-8:016:54:446
2611957993735,2cyclictest2666231-21kworker/u16:1+events_unbound16:43:174
2611966993634,2cyclictest3202231-21kworker/u16:2+events_unbound20:21:526
2611962993635,1cyclictest2878036-21kworker/u16:3+flush-8:017:51:475
2611966993533,2cyclictest2918981-21kworker/u16:7+events_unbound17:58:556
2611966993533,2cyclictest2809239-21kworker/u16:2+flush-8:016:59:486
2611966993533,2cyclictest2767407-21kworker/u16:2+events_unbound16:46:056
2611966993533,2cyclictest2766938-21kworker/u16:0+events_unbound17:22:466
2611962993533,2cyclictest2666231-21kworker/u16:1+flush-8:017:29:335
2611966993432,2cyclictest3233693-21kworker/u16:0+flush-8:020:32:546
2611966993432,2cyclictest2878036-21kworker/u16:3+events_unbound17:36:466
2611966993432,2cyclictest2571339-21kworker/u16:6+events_unbound16:06:566
2611966993432,2cyclictest2571339-21kworker/u16:6+events_unbound15:46:566
2611966993431,2cyclictest3040814-21kworker/u16:2+flush-8:018:57:556
2611966993331,2cyclictest3024746-21kworker/u16:1+events_unbound18:45:576
2611962993331,2cyclictest2666231-21kworker/u16:1+events_unbound16:42:365
2611966993230,2cyclictest3121334-21kworker/u16:4+events_unbound20:15:556
2611966993230,2cyclictest2809239-21kworker/u16:2+flush-8:017:05:466
2611966993229,2cyclictest3121334-21kworker/u16:4+events_unbound19:43:076
2611962993230,2cyclictest2918981-21kworker/u16:7+events_unbound19:35:205
2611967993130,0cyclictest0-21swapper/715:58:247
2611966993129,2cyclictest3233693-21kworker/u16:0+events_unbound20:48:476
2611966993129,2cyclictest3010182-21kworker/u16:0+events_unbound18:48:596
2611966993129,2cyclictest2726410-21kworker/u16:4+flush-8:016:52:056
2611966993128,2cyclictest3081084-21kworker/u16:0+flush-8:019:12:556
2611962993129,2cyclictest2766938-21kworker/u16:0+events_unbound16:46:445
2611962993128,2cyclictest2666231-21kworker/u16:1+events_unbound17:37:555
2611962993128,2cyclictest2666231-21kworker/u16:1+events_unbound17:37:555
2611967993029,0cyclictest0-21swapper/715:53:087
2611966993028,2cyclictest2918979-21kworker/u16:4+events_unbound18:25:536
2611966993028,2cyclictest2918979-21kworker/u16:4+events_unbound18:25:536
2611966993028,2cyclictest2878089-21kworker/u16:6+events_unbound18:32:486
2611966993028,2cyclictest2878036-21kworker/u16:3+events_unbound18:11:496
2611957993027,2cyclictest2918981-21kworker/u16:7+flush-8:020:28:204
2611967992928,0cyclictest0-21swapper/720:18:257
261196799290,27cyclictest589235-21systemd-journal15:25:327
261196799290,27cyclictest589235-21systemd-journal15:25:327
2611966992927,2cyclictest3172037-21kworker/u16:0+events_unbound20:09:046
2611966992927,2cyclictest2918981-21kworker/u16:7+flush-8:018:53:246
2611966992927,2cyclictest2918981-21kworker/u16:7+events_unbound18:05:206
2611966992927,2cyclictest2666231-21kworker/u16:1+flush-8:017:38:406
2611966992927,2cyclictest2666231-21kworker/u16:1+flush-8:017:38:406
2611966992927,2cyclictest2666231-21kworker/u16:1+events_unbound17:14:556
2611966992927,2cyclictest2621816-21kworker/u16:0+events_unbound16:01:366
2611962992927,2cyclictest2918981-21kworker/u16:7+flush-8:019:53:215
2611962992927,2cyclictest2918981-21kworker/u16:7+flush-8:019:53:215
2611957992927,2cyclictest3233693-21kworker/u16:0+events_unbound20:37:074
2611957992927,2cyclictest3040814-21kworker/u16:2+events_unbound19:31:084
2611957992927,2cyclictest3024746-21kworker/u16:1+flush-8:019:52:574
2611957992927,2cyclictest3024746-21kworker/u16:1+flush-8:019:52:574
261196799280,26cyclictest2950019-21cat18:07:567
2611966992826,2cyclictest3252623-21kworker/u16:2+events_unbound20:47:366
2611966992826,2cyclictest2918981-21kworker/u16:7+events_unbound20:03:366
2611966992826,2cyclictest2918980-21kworker/u16:5+events_unbound17:57:176
2611966992826,2cyclictest2666231-21kworker/u16:1+flush-8:016:34:496
2611966992826,2cyclictest2621816-21kworker/u16:0+flush-8:015:30:416
2611966992825,2cyclictest3024746-21kworker/u16:1+events_unbound19:07:586
2611966992825,2cyclictest3024746-21kworker/u16:1+events_unbound19:07:586
2611966992825,2cyclictest2546875-21kworker/u16:2+events_unbound15:23:086
2611966992825,2cyclictest2546875-21kworker/u16:2+events_unbound15:23:086
2611962992826,2cyclictest3191841-21kworker/u16:1+events_unbound20:44:565
2611962992826,2cyclictest3024746-21kworker/u16:1+events_unbound19:03:325
2611962992826,2cyclictest2666231-21kworker/u16:1+flush-8:016:17:525
2611962992826,2cyclictest2546875-21kworker/u16:2+events_unbound15:32:525
2611962992826,2cyclictest2341549-21kworker/u16:3+events_unbound15:36:335
2611957992826,2cyclictest2666231-21kworker/u16:1+flush-8:016:28:164
261196799270,25cyclictest2918712-21dnf17:51:297
2611966992725,2cyclictest3024746-21kworker/u16:1+events_unbound19:34:136
2611966992725,2cyclictest2918981-21kworker/u16:7+events_unbound17:52:526
2611962992725,2cyclictest3160963-21kworker/u16:3+events_unbound19:59:225
2611962992725,2cyclictest3121334-21kworker/u16:4+flush-8:019:51:355
2611962992725,2cyclictest3121334-21kworker/u16:4+events_unbound19:31:435
2611962992725,2cyclictest2918981-21kworker/u16:7+flush-8:018:00:155
2611962992725,2cyclictest2666231-21kworker/u16:1+events_unbound17:15:075
2611962992725,2cyclictest2621816-21kworker/u16:0+flush-8:015:49:175
2611962992725,2cyclictest2621816-21kworker/u16:0+events_unbound15:59:485
2611962992725,2cyclictest2571339-21kworker/u16:6+events_unbound16:11:205
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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