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2026-08-10 - 05:12
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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
Characteristics of the 100 highest latencies:
System rack1slot1.osadl.org (updated Mon Aug 10, 2026 00:45:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204662234158,25sleep20-21swapper/219:09:432
201592211173,24sleep30-21swapper/319:05:423
201922199160,26sleep10-21swapper/119:06:081
203252198160,24sleep00-21swapper/019:07:520
2066621070,0sleep20-21swapper/200:23:052
10062770,0sleep10-21swapper/122:22:211
313712650,0sleep10-21swapper/121:34:231
178942630,0sleep10-21swapper/123:32:381
2056899140,13cyclictest0-21swapper/122:05:151
2056099123,4cyclictest24319-21sed21:25:000
2056099119,1cyclictest7443-21ssh23:17:460
20560991110,1cyclictest9-21ksoftirqd/020:50:010
2057899100,8cyclictest29595-21kworker/u8:123:52:123
2057399100,7cyclictest0-21swapper/219:55:132
2057399100,1cyclictest0-21swapper/223:15:152
2056899100,4cyclictest0-21swapper/121:05:111
2056099103,4cyclictest31546-21sed20:40:010
2056099102,4cyclictest18690-21cut23:35:000
205789990,4cyclictest0-21swapper/321:25:393
205739994,3cyclictest20558-21cyclictest21:15:592
205609994,2cyclictest240-21systemd-journal00:15:000
205609990,5cyclictest561-21nscd23:08:170
205609990,3cyclictest0-21swapper/023:55:150
13759290,1sleep312660-21/usr/sbin/munin20:00:253
31819280,0sleep10-21swapper/123:52:211
205789986,1cyclictest11301-21snmpd20:32:463
205789986,1cyclictest11301-21snmpd20:14:573
205789985,1cyclictest13650irq/124-ahci[0021:44:553
205789983,1cyclictest693-21runrttasks19:25:473
205789982,4cyclictest22930-21munin-node23:17:033
205789981,5cyclictest561-21nscd23:10:503
205789981,1cyclictest0-21swapper/322:42:453
205789980,7cyclictest16622-21ntp_states23:30:193
205789980,7cyclictest0-21swapper/322:13:063
205789980,5cyclictest16822-21fschecks_time22:45:143
205789980,4cyclictest5567-21apt-get19:45:113
205789980,4cyclictest13224-21diskmemload22:20:143
205739986,1cyclictest61650irq/122-eno122:43:172
205739986,1cyclictest28-21ksoftirqd/219:40:002
205739986,1cyclictest11301-21snmpd23:07:532
205739982,3cyclictest13224-21diskmemload22:50:132
205739981,2cyclictest0-21swapper/200:38:272
205739980,0cyclictest0-21swapper/221:39:472
205689981,4cyclictest0-21swapper/123:25:131
205689981,2cyclictest0-21swapper/123:15:121
205689981,1cyclictest0-21swapper/122:15:371
205689980,5cyclictest0-21swapper/100:20:101
205689980,4cyclictest0-21swapper/122:33:351
205609987,1cyclictest9-21ksoftirqd/000:35:070
205609987,1cyclictest531-21ssh22:20:530
205609986,1cyclictest9-21ksoftirqd/020:40:120
205609986,1cyclictest9-21ksoftirqd/020:40:120
205609986,1cyclictest11301-21snmpd21:07:410
205609986,1cyclictest11301-21snmpd19:28:500
205609983,1cyclictest25994-21ssh21:25:190
205609981,6cyclictest9364-21/usr/sbin/munin23:20:170
205609981,6cyclictest0-21swapper/023:26:480
205609981,1cyclictest0-21swapper/021:41:210
205609980,6cyclictest11301-21snmpd22:36:530
205609980,5cyclictest2366-21ssh23:10:180
205609980,4cyclictest29195-21perf23:50:000
205609980,2cyclictest2706-21cron21:40:000
205789976,1cyclictest11301-21snmpd23:56:013
205789976,1cyclictest11301-21snmpd22:31:313
205789975,1cyclictest20173-21ssh00:21:303
205789975,1cyclictest1731-21cat19:35:193
205789975,1cyclictest11301-21snmpd23:27:513
205789975,1cyclictest11301-21snmpd21:48:073
205789975,1cyclictest11301-21snmpd21:21:263
205789975,1cyclictest11301-21snmpd21:02:283
205789975,1cyclictest11301-21snmpd20:08:453
205789975,1cyclictest11301-21snmpd00:25:113
205789975,1cyclictest11301-21snmpd00:14:323
205789975,1cyclictest11168-21cat19:55:173
205789973,4cyclictest561-21nscd21:13:093
205789972,3cyclictest13224-21diskmemload23:44:053
205789971,4cyclictest3216-21apt-get19:40:133
205789971,4cyclictest30143-21apt-get23:05:113
205789970,7cyclictest0-21swapper/321:17:353
205789970,6cyclictest19946-21ssh22:04:063
205789970,6cyclictest0-21swapper/321:33:283
205789970,4cyclictest0-21swapper/323:38:173
205739976,1cyclictest61650irq/122-eno123:40:002
205739976,1cyclictest61650irq/122-eno123:25:532
205739976,1cyclictest61650irq/122-eno123:13:422
205739976,1cyclictest61650irq/122-eno122:33:462
205739976,1cyclictest61650irq/122-eno122:25:162
205739976,1cyclictest61650irq/122-eno122:05:122
205739976,1cyclictest61650irq/122-eno121:50:142
205739976,1cyclictest61650irq/122-eno119:15:192
205739975,1cyclictest61650irq/122-eno122:10:152
205739975,1cyclictest11301-21snmpd22:48:172
205739975,1cyclictest11301-21snmpd21:57:032
205739974,1cyclictest14012-21tr21:10:182
205739973,2cyclictest548-21systemd-logind21:40:222
205739971,1cyclictest30368-21/usr/sbin/munin20:35:172
205739970,6cyclictest13224-21diskmemload22:00:182
205739970,6cyclictest0-21swapper/219:46:362
205739970,1cyclictest24305-21ntp_states22:55:182
205739970,1cyclictest0-21swapper/200:08:512
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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