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2026-06-12 - 02:43
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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 rack5slot2.osadl.org (updated Fri Jun 12, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174602196180,11sleep10-21swapper/119:09:521
172742192176,12sleep00-21swapper/019:07:270
172722183165,13sleep30-21swapper/319:07:253
171232178159,14sleep20-21swapper/219:05:312
160382460,0sleep10-21swapper/122:14:151
135992450,0sleep10-21swapper/123:48:071
150242440,0sleep20-21swapper/221:25:312
319692430,0sleep10-21swapper/122:37:251
171532410,0sleep10-21swapper/121:10:531
192302120,0sleep00-21swapper/000:38:500
156312110,0sleep20-21swapper/222:14:002
274922100,0sleep10-21swapper/122:19:591
176639991,4cyclictest27540-21cron22:20:010
17263290,0sleep30-21swapper/321:42:553
176639982,3cyclictest20018-21perf19:15:020
176819970,7cyclictest0-21swapper/320:35:113
176819970,6cyclictest4932-21diskstats22:40:153
176639962,4cyclictest20220-21kworker/0:023:25:170
176639960,6cyclictest0-21swapper/021:55:110
176639960,5cyclictest0-21swapper/022:50:120
20257250,0sleep10-21swapper/122:31:361
20257250,0sleep10-21swapper/122:31:361
176819950,4cyclictest31931-21diskstats23:25:123
176819950,4cyclictest13462-21diskmemload22:00:273
176769953,1cyclictest3587-21/usr/sbin/munin20:50:122
176769950,5cyclictest13461-21apt21:10:012
176769950,5cyclictest0-21swapper/221:55:112
176769950,5cyclictest0-21swapper/220:10:172
176769950,3cyclictest31844-21ssh23:40:352
176709951,2cyclictest0-21swapper/122:20:121
176709950,5cyclictest0-21swapper/123:41:001
176709950,5cyclictest0-21swapper/121:32:041
176709950,5cyclictest0-21swapper/121:25:151
176639954,1cyclictest0-21swapper/023:33:470
176639951,4cyclictest20220-21kworker/0:023:15:210
176639951,4cyclictest20220-21kworker/0:022:55:020
176639950,5cyclictest0-21swapper/023:53:430
176639950,5cyclictest0-21swapper/023:11:040
176639950,5cyclictest0-21swapper/021:14:160
176639950,5cyclictest0-21swapper/019:38:210
176639950,4cyclictest411-21rm23:41:130
19467240,0sleep00-21swapper/022:00:100
176819944,0cyclictest0-21swapper/323:59:323
176819944,0cyclictest0-21swapper/322:26:343
176819944,0cyclictest0-21swapper/321:33:363
176819944,0cyclictest0-21swapper/321:18:373
176819943,1cyclictest6375-21ssh00:00:143
176819943,1cyclictest1564-21grep21:35:163
176819941,3cyclictest10146-21uname23:30:153
176819940,4cyclictest3921-21ssh21:52:033
176819940,4cyclictest21028-21grep20:20:113
176819940,4cyclictest17830-21apt-get22:15:123
176819940,4cyclictest0-21swapper/323:15:263
176819940,4cyclictest0-21swapper/323:05:113
176819940,4cyclictest0-21swapper/322:55:053
176819940,4cyclictest0-21swapper/322:07:213
176819940,4cyclictest0-21swapper/321:46:013
176819940,3cyclictest8733-21apt-get21:00:013
176819940,3cyclictest7605-21ssh22:10:113
176819940,3cyclictest29414-21ssh23:40:133
176819940,3cyclictest28870-21rm22:20:133
176819940,3cyclictest27333-21perl22:35:143
176819940,3cyclictest24212-21perl19:20:153
176819940,3cyclictest22791-21ssh21:14:193
176819940,3cyclictest20266-21aten2_r5power_p19:15:013
176819940,3cyclictest18920-21ssh23:35:003
176819940,3cyclictest18734-21ssh00:05:523
176819940,3cyclictest16665-21latency_hist23:50:003
176819940,3cyclictest14047-21ntp_states23:00:173
176819940,3cyclictest13462-21diskmemload23:11:403
176819940,3cyclictest13093-21latency_hist20:05:003
176819940,1cyclictest13232-21df21:25:143
176819940,0cyclictest0-21swapper/323:53:263
176819940,0cyclictest0-21swapper/323:21:163
176769944,0cyclictest0-21swapper/223:47:232
176769944,0cyclictest0-21swapper/223:38:572
176769944,0cyclictest0-21swapper/223:25:512
176769944,0cyclictest0-21swapper/222:18:042
176769943,1cyclictest25853-21grep21:15:192
176769943,1cyclictest24042-21head20:25:132
176769943,1cyclictest17179-21/usr/sbin/munin23:50:192
176769943,1cyclictest0-21swapper/223:19:442
176769941,2cyclictest0-21swapper/221:35:122
176769941,2cyclictest0-21swapper/221:10:122
176769941,2cyclictest0-21swapper/219:15:112
176769941,1cyclictest0-21swapper/223:00:112
176769941,1cyclictest0-21swapper/220:40:102
176769940,4cyclictest0-21swapper/223:57:402
176769940,4cyclictest0-21swapper/223:20:112
176769940,4cyclictest0-21swapper/223:12:222
176769940,4cyclictest0-21swapper/222:46:272
176769940,4cyclictest0-21swapper/222:40:132
176769940,4cyclictest0-21swapper/222:34:192
176769940,4cyclictest0-21swapper/222:34:192
176769940,4cyclictest0-21swapper/222:29:062
176769940,4cyclictest0-21swapper/222:07:592
176769940,4cyclictest0-21swapper/222:00:122
176769940,4cyclictest0-21swapper/221:49:242
176769940,4cyclictest0-21swapper/221:34:502
176769940,4cyclictest0-21swapper/220:20:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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