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2026-04-02 - 00:34
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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 Wed Apr 01, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
209372200166,29sleep00-21swapper/007:08:110
209552187155,11sleep30-21swapper/307:08:253
209732183166,12sleep10-21swapper/107:08:401
207432153135,13sleep20-21swapper/207:05:432
197452530,0sleep10-21swapper/109:26:061
100332480,0sleep20-21swapper/209:37:252
243182450,0sleep10-21swapper/110:15:391
243182450,0sleep10-21swapper/110:15:391
247852420,0sleep10-21swapper/111:35:171
107092110,0sleep10-21swapper/110:40:331
207422100,0sleep320745-21sed12:05:143
212589990,7cyclictest0-21swapper/309:55:123
212539983,2cyclictest31-21ksoftirqd/210:35:022
212539976,1cyclictest31-21ksoftirqd/209:20:122
212539966,0cyclictest31-21ksoftirqd/211:45:012
212519961,3cyclictest0-21swapper/112:20:121
22300250,0sleep10-21swapper/108:15:001
212589955,0cyclictest3378-21kworker/3:011:46:363
212589955,0cyclictest3378-21kworker/3:010:39:253
212589955,0cyclictest3378-21kworker/3:009:09:523
212589955,0cyclictest3378-21kworker/3:008:58:413
212589955,0cyclictest3378-21kworker/3:008:47:293
212589955,0cyclictest3378-21kworker/3:008:36:173
212589955,0cyclictest3378-21kworker/3:008:25:043
212589955,0cyclictest3378-21kworker/3:008:13:543
212589955,0cyclictest3378-21kworker/3:008:02:413
212589955,0cyclictest3378-21kworker/3:007:51:303
212589955,0cyclictest3378-21kworker/3:007:29:073
212589955,0cyclictest3378-21kworker/3:007:17:563
212589955,0cyclictest23518-21apt-get10:00:133
212589955,0cyclictest0-21swapper/312:32:323
212589955,0cyclictest0-21swapper/311:00:453
212589955,0cyclictest0-21swapper/310:57:503
212589955,0cyclictest0-21swapper/310:54:123
212589952,3cyclictest0-21swapper/309:32:183
212589950,5cyclictest0-21swapper/307:35:183
212589950,4cyclictest17828-21ntp_states09:25:173
212539955,0cyclictest0-21swapper/211:35:242
212539955,0cyclictest0-21swapper/210:22:212
212539955,0cyclictest0-21swapper/209:46:432
212539950,5cyclictest29046-21ssh11:21:252
212539950,5cyclictest0-21swapper/211:56:472
212539950,5cyclictest0-21swapper/209:41:372
212539950,5cyclictest0-21swapper/207:25:162
212539950,4cyclictest0-21swapper/207:40:102
212539950,0cyclictest0-21swapper/212:39:242
212539950,0cyclictest0-21swapper/211:34:402
212519955,0cyclictest0-21swapper/110:01:271
212519952,2cyclictest0-21swapper/108:05:131
212519951,2cyclictest0-21swapper/112:00:101
212519951,2cyclictest0-21swapper/110:55:121
212519951,2cyclictest0-21swapper/107:55:121
212519951,2cyclictest0-21swapper/107:35:141
212519950,5cyclictest0-21swapper/110:36:041
212519950,5cyclictest0-21swapper/109:31:281
212469954,1cyclictest3-21ksoftirqd/007:20:130
212469950,5cyclictest0-21swapper/012:37:530
212469950,5cyclictest0-21swapper/011:56:000
212469950,0cyclictest0-21swapper/012:32:390
212469950,0cyclictest0-21swapper/011:03:450
1345250,0sleep10-21swapper/111:08:111
212589944,0cyclictest0-21swapper/312:28:023
212589944,0cyclictest0-21swapper/310:05:183
212589944,0cyclictest0-21swapper/309:52:553
212589944,0cyclictest0-21swapper/308:18:033
212589944,0cyclictest0-21swapper/307:24:573
212589943,1cyclictest6123-21/usr/sbin/munin09:20:183
212589943,1cyclictest23730-21grep11:50:213
212589943,1cyclictest13208-21irqstats07:55:153
212589942,1cyclictest17902-21df_inode08:05:153
212589941,3cyclictest26552-21needreboot11:20:173
212589941,2cyclictest0-21swapper/310:45:133
212589941,1cyclictest0-21swapper/309:00:123
212589940,4cyclictest9640-21ssh12:00:103
212589940,4cyclictest0-21swapper/312:11:463
212589940,4cyclictest0-21swapper/311:55:403
212589940,4cyclictest0-21swapper/311:42:313
212589940,4cyclictest0-21swapper/311:34:303
212589940,4cyclictest0-21swapper/311:25:133
212589940,4cyclictest0-21swapper/310:25:143
212589940,4cyclictest0-21swapper/309:45:133
212589940,4cyclictest0-21swapper/309:37:403
212589940,3cyclictest27854-21perl11:05:153
212589940,3cyclictest27260-21awk08:25:003
212589940,3cyclictest22635-21ntp_states07:10:193
212589940,3cyclictest20819-21sh12:20:493
212589940,3cyclictest2032-21sh10:20:343
212589940,3cyclictest20228-21sh12:36:303
212589940,3cyclictest17675-21cut12:20:013
212589940,3cyclictest15203-21/usr/sbin/munin09:40:143
212589940,3cyclictest12116-21diskstats10:10:143
212589940,3cyclictest10047-21expr10:40:203
212589940,3cyclictest0-21swapper/311:35:113
212589940,1cyclictest23289-21proc_pri10:15:173
212589940,1cyclictest23289-21proc_pri10:15:173
212589940,1cyclictest20006-21/usr/sbin/munin10:30:123
212539943,1cyclictest27495-21grep11:05:142
212539943,1cyclictest0-21swapper/207:54:482
212539942,2cyclictest802-21snmpd09:17:522
212539942,1cyclictest802-21snmpd09:53:412
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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