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2025-11-29 - 20:48
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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 rack5slot2.osadl.org (updated Sat Nov 29, 2025 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
125232207192,10sleep10-21swapper/107:09:161
103602199182,12sleep30-21swapper/307:05:053
123012190172,13sleep00-21swapper/007:06:220
12507212187,12sleep20-21swapper/207:09:052
317712680,1sleep11277899cyclictest10:09:361
219322450,0sleep30-21swapper/310:52:363
155392120,0sleep10-21swapper/109:12:581
204012110,0sleep10-21swapper/109:47:181
122152110,0sleep10-21swapper/109:59:541
6721290,0sleep10-21swapper/111:00:521
17540290,0sleep00-21swapper/012:28:450
127779982,3cyclictest15354-21perf11:55:000
127839971,3cyclictest26278-21chrt10:38:542
127839971,1cyclictest0-21swapper/212:02:052
127839971,1cyclictest0-21swapper/210:21:502
127839971,1cyclictest0-21swapper/209:45:022
127839970,4cyclictest26385-21ssh11:27:192
127839970,3cyclictest3844-21cat09:00:002
127839970,2cyclictest301ktimersoftd/211:59:252
127839970,1cyclictest301ktimersoftd/209:56:332
127779971,3cyclictest6346-21munin-run08:00:000
15057260,0sleep10-21swapper/108:15:161
127849960,1cyclictest25945-21sh11:10:243
127839963,2cyclictest15224-21munin-node07:15:012
127839962,1cyclictest0-21swapper/209:40:122
127839961,3cyclictest10520-21ssh11:51:572
127839961,2cyclictest7732-21df_inode09:25:142
127839961,2cyclictest3389-21cut12:05:142
127839961,2cyclictest22726-21ssh12:30:462
127839961,2cyclictest1528-21cut12:20:192
127839961,1cyclictest31-21ksoftirqd/211:00:542
127839961,1cyclictest0-21swapper/212:13:262
127839961,1cyclictest0-21swapper/211:48:322
127839961,1cyclictest0-21swapper/211:40:182
127839961,1cyclictest0-21swapper/211:35:472
127839961,1cyclictest0-21swapper/211:21:102
127839961,1cyclictest0-21swapper/210:30:222
127839961,1cyclictest0-21swapper/209:53:512
127839960,4cyclictest910-21ssh11:30:252
127839960,4cyclictest30887-21ssh12:19:092
127839960,4cyclictest2478-21ssh10:42:532
127839960,4cyclictest24741-21python10:05:222
127839960,4cyclictest20562-21ssh10:51:442
127839960,4cyclictest1338-21ssh09:38:062
127839960,3cyclictest9438-21sh11:19:112
127839960,3cyclictest3406-21ssh10:27:052
127839960,3cyclictest31873-21ssh09:20:322
127839960,3cyclictest20872-21ssh11:08:302
127839960,3cyclictest13309-21ssh09:11:342
127839960,3cyclictest12373-21ssh12:25:242
127839960,2cyclictest3985-21ssh10:11:042
127839960,2cyclictest30217-21/usr/sbin/munin07:40:202
127839960,2cyclictest29071-21rm11:12:252
127839960,2cyclictest22123-21rm09:32:062
127839960,2cyclictest13682-21rm10:48:412
127839960,2cyclictest12837-21rm10:00:082
127839960,2cyclictest12837-21rm10:00:082
127839960,1cyclictest31-21ksoftirqd/209:15:142
127779960,5cyclictest0-21swapper/008:20:110
127779960,3cyclictest8787-21munin-run09:10:010
127849953,1cyclictest31368-21/usr/sbin/munin07:45:143
127849951,3cyclictest26303-21latency_hist08:40:003
127849950,5cyclictest0-21swapper/311:51:093
127849950,5cyclictest0-21swapper/310:25:183
127849950,0cyclictest0-21swapper/309:24:293
127839953,2cyclictest21046-21munin-run07:25:012
127839953,2cyclictest15505-21df_inode07:15:012
127839951,2cyclictest31-21ksoftirqd/212:35:032
127839951,2cyclictest26694-21grep08:40:142
127839951,1cyclictest16862-21cstates08:20:132
127839951,1cyclictest0-21swapper/208:25:232
127839950,3cyclictest12423-21ssh10:15:192
127839950,2cyclictest26234-21ssh10:55:112
127839950,2cyclictest25257-21python07:30:192
127839950,2cyclictest25169-21ntpq08:35:182
127839950,1cyclictest31-21ksoftirqd/208:00:142
127839950,1cyclictest0-21swapper/207:35:222
127789950,5cyclictest0-21swapper/111:48:031
127789950,5cyclictest0-21swapper/111:17:031
127789950,5cyclictest0-21swapper/110:42:431
127789950,5cyclictest0-21swapper/107:50:171
127779952,2cyclictest0-21swapper/007:35:170
127779950,5cyclictest0-21swapper/011:20:550
127779950,5cyclictest0-21swapper/010:50:310
127779950,5cyclictest0-21swapper/009:36:010
127779950,4cyclictest2996-21apt-get09:55:140
127779950,4cyclictest0-21swapper/011:30:120
127779950,4cyclictest0-21swapper/009:20:120
127779950,0cyclictest0-21swapper/010:10:390
127779950,0cyclictest0-21swapper/009:43:440
127849944,0cyclictest0-21swapper/312:00:543
127849943,1cyclictest31368-21tr11:30:133
127849943,1cyclictest29793-21/usr/sbin/munin12:35:213
127849943,1cyclictest29084-21df11:45:153
127849943,1cyclictest11732-21cut08:10:143
127849942,1cyclictest4942-21/usr/sbin/munin09:40:213
127849942,1cyclictest16308-21/usr/sbin/munin07:15:203
127849942,1cyclictest10196-21hddtemp_smartct09:10:153
127849941,2cyclictest0-21swapper/309:05:033
127849941,2cyclictest0-21swapper/307:20:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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