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2026-08-09 - 19:46
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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 Sun Aug 09, 2026 12:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
155372212188,20sleep10-21swapper/107:09:401
153972191172,14sleep30-21swapper/307:07:533
155312189173,12sleep00-21swapper/007:09:350
152972177161,12sleep20-21swapper/207:06:352
29282750,0sleep30-21swapper/312:37:363
234752480,0sleep00-21swapper/011:42:170
4102440,0sleep10-21swapper/107:40:181
134672380,0sleep00-21swapper/011:20:280
98802140,0sleep10-21swapper/110:13:581
16999290,0sleep00-21swapper/010:33:520
9400270,0sleep10-21swapper/110:45:461
157439970,5cyclictest0-21swapper/208:20:112
157359971,6cyclictest17705-21kworker/0:110:21:580
32464260,0sleep00-21swapper/009:35:590
20136260,1sleep21574399cyclictest09:46:062
157499964,2cyclictest0-21swapper/309:26:063
157439960,1cyclictest28440-21ssh11:11:572
157359962,4cyclictest17705-21kworker/0:112:07:480
157359961,5cyclictest17705-21kworker/0:108:35:170
157359960,3cyclictest16047-21munin-run10:50:010
157359960,3cyclictest1255-21munin-run08:50:000
157359960,3cyclictest11850irq/131-ahci[0009:45:010
20455250,4sleep211354-21diskmemload11:57:102
157499955,0cyclictest18301-21kworker/3:211:50:283
157499955,0cyclictest18301-21kworker/3:209:13:443
157499950,5cyclictest0-21swapper/309:50:153
157499950,5cyclictest0-21swapper/307:40:023
157499950,5cyclictest0-21swapper/307:16:453
157499950,4cyclictest17809-21munin-run11:40:003
157439950,5cyclictest0-21swapper/212:24:062
157439950,5cyclictest0-21swapper/208:25:292
157409951,2cyclictest0-21swapper/110:05:121
157359951,4cyclictest17705-21kworker/0:112:02:000
157359951,4cyclictest17705-21kworker/0:111:38:200
157359951,4cyclictest17705-21kworker/0:110:28:260
157359950,5cyclictest0-21swapper/011:51:170
157359950,5cyclictest0-21swapper/009:27:490
157359950,5cyclictest0-21swapper/008:55:030
157359950,4cyclictest19332-21sh10:35:120
157359950,4cyclictest0-21swapper/009:00:130
5725240,0sleep20-21swapper/211:50:112
5124240,0sleep00-21swapper/012:39:030
157499944,0cyclictest18301-21kworker/3:211:05:403
157499944,0cyclictest18301-21kworker/3:209:02:303
157499944,0cyclictest0-21swapper/312:19:163
157499944,0cyclictest0-21swapper/311:13:033
157499943,1cyclictest7232-21tr09:40:163
157499943,1cyclictest1477-21/usr/sbin/munin08:50:203
157499943,1cyclictest12297-21cpuspeed10:15:133
157499943,0cyclictest40-21ksoftirqd/311:25:133
157499940,4cyclictest32625-21fschecks_time10:25:133
157499940,4cyclictest25165-21df10:05:143
157499940,4cyclictest20817-21ssh10:03:043
157499940,4cyclictest19064-21/usr/sbin/munin08:20:193
157499940,4cyclictest0-21swapper/312:10:003
157499940,4cyclictest0-21swapper/311:55:103
157499940,4cyclictest0-21swapper/311:40:113
157499940,4cyclictest0-21swapper/310:50:213
157499940,4cyclictest0-21swapper/310:45:123
157499940,4cyclictest0-21swapper/310:30:193
157499940,4cyclictest0-21swapper/309:35:123
157499940,4cyclictest0-21swapper/309:30:143
157499940,4cyclictest0-21swapper/309:20:133
157499940,4cyclictest0-21swapper/309:16:113
157499940,4cyclictest0-21swapper/308:25:133
157499940,4cyclictest0-21swapper/307:45:123
157499940,4cyclictest0-21swapper/307:30:073
157499940,4cyclictest0-21swapper/307:10:133
157499940,3cyclictest4132-21sed08:55:003
157499940,3cyclictest21941-21apt10:20:123
157499940,3cyclictest21729-21apt-config07:20:023
157499940,3cyclictest17497-21if_eth008:15:163
157499940,3cyclictest10972-21hddtemp_smartct12:25:153
157499940,1cyclictest5931-21ntp_states09:55:193
157499940,1cyclictest31764-21perl11:30:153
157499940,1cyclictest30138-21chrt07:35:153
157499940,1cyclictest26577-21irqstats12:00:173
157499940,1cyclictest26089-21grep07:25:203
157499940,1cyclictest2059-21/usr/sbin/munin10:10:203
157499940,0cyclictest0-21swapper/311:48:253
157499940,0cyclictest0-21swapper/310:56:373
157439944,0cyclictest0-21swapper/209:19:202
157439944,0cyclictest0-21swapper/208:40:012
157439944,0cyclictest0-21swapper/208:33:292
157439943,1cyclictest19779-21tr09:30:142
157439943,1cyclictest13908-21sed09:10:222
157439942,2cyclictest0-21swapper/212:10:022
157439941,3cyclictest8802-21ssh10:45:232
157439941,3cyclictest12213-21awk11:20:142
157439940,4cyclictest4943-21ssh09:22:292
157439940,4cyclictest0-21swapper/212:35:122
157439940,4cyclictest0-21swapper/212:15:112
157439940,4cyclictest0-21swapper/212:00:122
157439940,4cyclictest0-21swapper/211:45:092
157439940,4cyclictest0-21swapper/211:35:132
157439940,4cyclictest0-21swapper/211:18:402
157439940,4cyclictest0-21swapper/211:00:112
157439940,4cyclictest0-21swapper/210:56:252
157439940,4cyclictest0-21swapper/210:30:132
157439940,4cyclictest0-21swapper/210:22:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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