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2025-11-23 - 00:43
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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 Nov 22, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
58486726048,8sleep50-21swapper/515:23:145
585270995651,4cyclictest983421-21latency_hist18:38:307
58468425318,31sleep70-21swapper/715:20:437
585260995250,2cyclictest1033867-21kworker/u16:0+events_unbound19:03:564
585270995146,4cyclictest670018-21latency_hist16:03:317
585260995048,2cyclictest659689-21kworker/u16:0+events_unbound16:21:144
58461524938,8sleep40-21swapper/415:19:444
58527099470,45cyclictest993575-21latency_hist18:43:317
585260994745,2cyclictest594956-21kworker/u16:3+flush-8:015:30:144
57524924736,7sleep60-21swapper/615:18:346
585266994644,2cyclictest667510-21kworker/u16:4+events_unbound16:25:136
585266994643,2cyclictest690033-21kworker/u16:1+events_unbound16:13:336
585260994644,2cyclictest832218-21kworker/u16:3+events_unbound17:44:004
585266994442,2cyclictest771056-21kworker/u16:5+events_unbound17:13:136
585260994441,2cyclictest1154788-21kworker/u16:0+events_unbound20:23:444
585266994341,2cyclictest3366955-21kworker/u16:5+events_unbound15:24:146
585266994341,2cyclictest1114441-21kworker/u16:3+events_unbound20:13:136
585270994237,3cyclictest589235-21systemd-journal16:08:317
585270994236,5cyclictest912579-21latency_hist18:03:317
585266994240,2cyclictest821765-21kworker/u16:2+events_unbound18:08:146
585260994240,2cyclictest832218-21kworker/u16:3+events_unbound17:25:104
585260994240,2cyclictest730323-21kworker/u16:2+flush-8:016:33:334
585260994139,2cyclictest821765-21kworker/u16:2+events_unbound17:40:454
585270994035,4cyclictest589235-21systemd-journal16:46:137
585270994034,5cyclictest659931-21latency_hist15:58:317
585270994034,5cyclictest1054177-21latency_hist19:13:317
585266994038,2cyclictest972984-21kworker/u16:1+flush-8:019:08:306
585266993937,2cyclictest1114441-21kworker/u16:3+flush-8:019:44:296
585266993836,2cyclictest832218-21kworker/u16:3+events_unbound17:43:136
585266993836,2cyclictest821765-21kworker/u16:2+flush-8:018:09:136
585266993836,2cyclictest659689-21kworker/u16:0+events_unbound16:36:136
585260993835,3cyclictest871947-21kworker/u16:1+flush-8:018:13:134
585266993735,2cyclictest667510-21kworker/u16:4+events_unbound16:53:316
585266993734,2cyclictest821765-21kworker/u16:2+flush-8:017:43:336
585266993734,2cyclictest690033-21kworker/u16:1+events_unbound16:43:336
585261993735,2cyclictest667510-21kworker/u16:4+flush-8:016:23:495
585260993734,2cyclictest1084177-21kworker/u16:1+events_unbound19:33:344
585266993634,2cyclictest554576-21kworker/u16:1+flush-8:015:34:036
585261993633,2cyclictest1136119-21kworker/u16:2+events_unbound20:23:485
585260993634,2cyclictest832218-21kworker/u16:3+flush-8:018:20:124
585260993633,2cyclictest972984-21kworker/u16:1+flush-8:018:33:414
585260993633,2cyclictest649558-21kworker/u16:1+flush-8:015:58:344
585266993533,2cyclictest659689-21kworker/u16:0+events_unbound16:57:146
585260993533,2cyclictest1084177-21kworker/u16:1+flush-8:019:33:304
585260993533,2cyclictest1074040-21kworker/u16:0+events_unbound19:24:004
585266993432,2cyclictest667510-21kworker/u16:4+flush-8:017:08:226
585266993432,2cyclictest1154788-21kworker/u16:0+events_unbound20:02:146
585266993432,2cyclictest1013444-21kworker/u16:3+events_unbound18:54:156
585261993432,2cyclictest972984-21kworker/u16:1+events_unbound18:53:565
585260993432,2cyclictest700418-21kworker/u16:3+events_unbound16:28:144
585270993327,5cyclictest589235-21systemd-journal18:29:537
585266993331,2cyclictest932747-21kworker/u16:4+events_unbound18:27:076
585266993331,2cyclictest832218-21kworker/u16:3+events_unbound18:17:416
585266993331,2cyclictest584119-21kworker/u16:0+events_unbound15:41:366
585261993331,2cyclictest1124677-21kworker/u16:1+flush-8:019:53:525
585266993230,2cyclictest993969-21kworker/u16:2+events_unbound18:47:156
585266993230,2cyclictest1114441-21kworker/u16:3+events_unbound20:15:416
585260993230,2cyclictest1114441-21kworker/u16:3+flush-8:019:49:284
585260993230,2cyclictest1013444-21kworker/u16:3+flush-8:019:11:144
585266993129,2cyclictest932732-21kworker/u16:0+events_unbound18:31:416
585266993129,2cyclictest832218-21kworker/u16:3+flush-8:018:01:366
585266993129,2cyclictest1154788-21kworker/u16:0+flush-8:020:37:056
585266993129,2cyclictest1114441-21kworker/u16:3+events_unbound19:57:426
585266993128,2cyclictest1033867-21kworker/u16:0+flush-8:019:14:006
585260993128,2cyclictest667510-21kworker/u16:4+flush-8:016:08:504
585260993128,2cyclictest584119-21kworker/u16:0+events_unbound15:33:334
585270993025,4cyclictest589235-21systemd-journal17:02:127
585266993028,2cyclictest821765-21kworker/u16:2+flush-8:017:58:306
585266993028,2cyclictest594956-21kworker/u16:3+flush-8:016:03:146
585266993028,2cyclictest594956-21kworker/u16:3+events_unbound15:57:416
585260993028,2cyclictest832218-21kworker/u16:3+flush-8:017:35:134
585270992924,4cyclictest589235-21systemd-journal17:23:327
585266992928,1cyclictest1084177-21kworker/u16:1+events_unbound19:27:156
585266992927,2cyclictest821765-21kworker/u16:2+flush-8:017:34:146
585266992927,2cyclictest667510-21kworker/u16:4+flush-8:017:00:146
585266992927,2cyclictest594956-21kworker/u16:3+events_unbound16:04:416
585266992927,2cyclictest1154788-21kworker/u16:0+flush-8:020:31:416
585266992927,2cyclictest1104292-21kworker/u16:2+events_unbound19:41:156
585266992927,2cyclictest1104292-21kworker/u16:2+events_unbound19:37:136
585266992926,2cyclictest594956-21kworker/u16:3+flush-8:015:43:436
585266992926,2cyclictest1124677-21kworker/u16:1+events_unbound19:48:336
585261992926,2cyclictest730323-21kworker/u16:2+flush-8:016:48:525
585260992927,2cyclictest730323-21kworker/u16:2+flush-8:016:42:054
585260992927,2cyclictest1074040-21kworker/u16:0+flush-8:019:23:294
585260992927,2cyclictest1013444-21kworker/u16:3+events_unbound18:56:154
585270992823,4cyclictest589235-21systemd-journal16:23:317
585266992826,2cyclictest972984-21kworker/u16:1+events_unbound18:38:066
585266992826,2cyclictest667510-21kworker/u16:4+flush-8:016:23:296
585266992826,2cyclictest659689-21kworker/u16:0+flush-8:017:18:056
585261992826,2cyclictest594956-21kworker/u16:3+events_unbound15:43:455
585260992825,2cyclictest832218-21kworker/u16:3+events_unbound18:41:414
585270992726,0cyclictest0-21swapper/720:08:537
585266992725,2cyclictest594956-21kworker/u16:3+flush-8:015:49:176
585266992725,2cyclictest1136119-21kworker/u16:2+events_unbound20:46:406
585266992725,2cyclictest1136119-21kworker/u16:2+events_unbound20:20:056
585260992725,2cyclictest932747-21kworker/u16:4+events_unbound18:26:054
585260992725,2cyclictest1136119-21kworker/u16:2+events_unbound20:19:144
585260992724,3cyclictest700418-21kworker/u16:3+flush-8:016:28:544
585270992625,0cyclictest0-21swapper/718:23:537
585270992620,5cyclictest932757-21latency_hist18:13:317
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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