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2026-09-22 - 11:25
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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 Tue Sep 22, 2026 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
225682211197,10sleep10-21swapper/119:06:511
224642185169,12sleep30-21swapper/319:05:333
226742184167,12sleep00-21swapper/019:08:150
22463211699,13sleep20-21swapper/219:05:322
165742480,0sleep316573-21irqstats00:25:173
281462470,0sleep10-21swapper/121:46:411
26262440,0sleep30-21swapper/321:34:183
13682410,0sleep20-21swapper/223:28:232
272762400,0sleep30-21swapper/321:14:003
2298899133,4cyclictest16457-21munin-run23:20:000
108502110,0sleep30-21swapper/322:10:253
229889991,4cyclictest30715-21munin-run22:05:010
229889991,4cyclictest30715-21munin-run22:05:010
229979971,5cyclictest0-21swapper/320:15:123
229979960,2cyclictest0-21swapper/321:18:273
229889960,6cyclictest0-21swapper/022:25:390
24449250,0sleep00-21swapper/023:23:480
229979955,0cyclictest984-21kworker/3:023:39:233
229979955,0cyclictest984-21kworker/3:020:51:273
229979951,3cyclictest0-21swapper/320:05:133
229979950,5cyclictest0-21swapper/321:38:143
229979950,5cyclictest0-21swapper/321:23:323
229979950,5cyclictest0-21swapper/300:39:583
229979950,1cyclictest0-21swapper/323:48:423
229979950,1cyclictest0-21swapper/319:35:323
229979950,0cyclictest0-21swapper/323:12:493
229939955,0cyclictest0-21swapper/222:22:312
229939955,0cyclictest0-21swapper/200:26:552
229939950,5cyclictest0-21swapper/222:03:542
229939950,5cyclictest0-21swapper/222:03:542
229939950,5cyclictest0-21swapper/221:29:072
229939950,0cyclictest0-21swapper/223:45:012
229939950,0cyclictest0-21swapper/223:38:462
229929951,2cyclictest0-21swapper/119:10:131
229929950,5cyclictest0-21swapper/121:52:441
229929950,5cyclictest0-21swapper/121:27:511
229929950,5cyclictest0-21swapper/100:12:251
229889953,2cyclictest0-21swapper/000:16:580
229889953,1cyclictest1903-21/usr/sbin/munin20:35:210
229889950,4cyclictest0-21swapper/019:35:120
229889950,1cyclictest15568-21ntp_states21:00:180
229979944,0cyclictest0-21swapper/323:55:533
229979944,0cyclictest0-21swapper/323:52:233
229979944,0cyclictest0-21swapper/322:47:303
229979944,0cyclictest0-21swapper/300:06:213
229979942,1cyclictest23805-21sort19:10:163
229979942,1cyclictest0-21swapper/323:40:103
229979941,3cyclictest0-21swapper/322:07:363
229979941,2cyclictest0-21swapper/323:25:123
229979941,2cyclictest0-21swapper/322:00:133
229979941,2cyclictest0-21swapper/322:00:133
229979941,2cyclictest0-21swapper/321:50:123
229979941,2cyclictest0-21swapper/320:35:123
229979941,1cyclictest0-21swapper/320:30:123
229979941,1cyclictest0-21swapper/319:30:133
229979940,4cyclictest31671-21ssh22:54:443
229979940,4cyclictest25265-21ssh23:07:303
229979940,4cyclictest0-21swapper/323:30:123
229979940,4cyclictest0-21swapper/323:21:063
229979940,4cyclictest0-21swapper/322:55:133
229979940,4cyclictest0-21swapper/322:40:123
229979940,4cyclictest0-21swapper/322:35:113
229979940,4cyclictest0-21swapper/322:22:443
229979940,4cyclictest0-21swapper/322:15:133
229979940,4cyclictest0-21swapper/321:55:123
229979940,4cyclictest0-21swapper/321:55:123
229979940,4cyclictest0-21swapper/321:43:103
229979940,4cyclictest0-21swapper/319:16:103
229979940,4cyclictest0-21swapper/300:30:303
229979940,4cyclictest0-21swapper/300:15:123
229979940,4cyclictest0-21swapper/300:00:133
229979940,3cyclictest8460-21ssh00:20:483
229979940,3cyclictest7024-21memory22:25:163
229979940,3cyclictest29167-21date20:25:003
229979940,3cyclictest26579-21ssh00:14:223
229979940,3cyclictest25384-21/usr/sbin/munin21:45:183
229979940,3cyclictest16859-21/usr/sbin/munin22:30:193
229979940,3cyclictest16332-21cut20:00:003
229979940,3cyclictest13821-21date19:55:003
229979940,3cyclictest0-21swapper/321:00:123
229979940,1cyclictest8748-21latency_hist19:45:003
229979940,0cyclictest0-21swapper/323:15:343
229939944,0cyclictest19005-21diskmemload22:36:382
229939944,0cyclictest0-21swapper/223:32:302
229939944,0cyclictest0-21swapper/222:51:202
229939943,1cyclictest25840-21cat21:45:202
229939943,1cyclictest11768-21ssh22:11:012
229939941,3cyclictest802-21snmpd22:09:092
229939941,3cyclictest12586-21ssh23:00:402
229939941,2cyclictest7787-21sh19:40:182
229939941,1cyclictest0-21swapper/219:35:122
229939940,4cyclictest9866-21diskstats20:50:132
229939940,4cyclictest20160-21tune2fs21:10:152
229939940,4cyclictest19005-21diskmemload22:30:152
229939940,4cyclictest15250-21ssh21:56:342
229939940,4cyclictest15250-21ssh21:56:342
229939940,4cyclictest0-21swapper/223:50:132
229939940,4cyclictest0-21swapper/223:05:142
229939940,4cyclictest0-21swapper/221:20:122
229939940,4cyclictest0-21swapper/220:55:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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