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2024-10-10 - 19:38
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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 rackbslot7.osadl.org (updated Thu Oct 10, 2024 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23854211923,65sleep20-21swapper/207:05:192
23854211923,65sleep20-21swapper/207:05:192
1348921080,4chrt13491-21ssh09:32:573
25166999314,30cyclictest141rcu_preempt10:40:300
25196999134,22cyclictest117-21pr/ttymxc008:15:203
25196999134,22cyclictest117-21pr/ttymxc008:15:203
2516699893,59cyclictest24384-21apt-get08:45:320
25196998448,20cyclictest0-21swapper/308:45:113
2519699843,58cyclictest8916-21apt-get09:25:123
25176998339,36cyclictest0-21swapper/108:40:331
2517699832,9cyclictest30881-21apt-get09:05:081
2517699832,9cyclictest30881-21apt-get09:05:081
325282810,10sleep3391rcuc/312:04:383
325282810,10sleep3391rcuc/312:04:383
2519699817,56cyclictest18852-21apt-get10:40:113
2517699815,24cyclictest141rcu_preempt10:40:171
25196997916,21cyclictest41-21ksoftirqd/310:35:273
25176997954,16cyclictest2339-21tail07:35:301
25187997857,14cyclictest14150-21munin-plugin-st08:14:582
25187997827,20cyclictest14936-21ntp_states08:15:272
25187997827,20cyclictest14936-21ntp_states08:15:272
2516699778,45cyclictest32243-21diskmemload10:35:320
25166997734,27cyclictest141rcu_preempt11:45:230
25166997716,35cyclictest141rcu_preempt11:32:370
2519699766,48cyclictest1934-21apt-get10:10:113
25196997638,8cyclictest141rcu_preempt12:17:343
25196997637,13cyclictest141rcu_preempt11:21:403
25187997622,22cyclictest19398-21taskset09:43:562
25176997650,18cyclictest19182-21latency_hist10:40:001
2517699762,11cyclictest19285-21apt-get08:30:131
25166997636,9cyclictest141rcu_preempt10:30:270
25166997636,9cyclictest141rcu_preempt10:30:270
25166997610,43cyclictest8916-21apt-get09:25:120
25187997559,10cyclictest2809-21idleruntime-cro07:39:582
25187997529,17cyclictest2468-21ssh09:14:312
2517699754,58cyclictest32243-21diskmemload10:20:111
25176997541,28cyclictest0-21swapper/110:35:001
25176997541,28cyclictest0-21swapper/110:35:001
25166997542,13cyclictest141rcu_preempt09:10:320
25166997541,13cyclictest141rcu_preempt11:15:190
2517699743,12cyclictest17673-21apt-get08:25:101
25166997441,13cyclictest141rcu_preempt10:04:110
25166997431,23cyclictest141rcu_preempt11:40:290
25166997431,22cyclictest141rcu_preempt11:54:330
25166997431,22cyclictest141rcu_preempt11:54:330
25196997346,7cyclictest141rcu_preempt11:41:123
25196997345,8cyclictest141rcu_preempt07:30:173
25196997345,8cyclictest141rcu_preempt07:30:173
2517699735,60cyclictest8976-21kworker/u8:109:45:191
25176997334,31cyclictest0-21swapper/111:40:301
2517699733,10cyclictest10559-21apt-get10:25:101
2517699733,10cyclictest10559-21apt-get10:25:101
2517699732,60cyclictest11443-21sort08:05:181
2517699732,60cyclictest11443-21sort08:05:181
25176997320,46cyclictest31272-21unixbench_singl11:00:331
25166997333,34cyclictest23098-21fschecks_count09:50:190
25196997237,13cyclictest141rcu_preempt09:45:053
25196997225,13cyclictest141rcu_preempt10:15:123
25196997225,13cyclictest141rcu_preempt10:15:123
25187997241,22cyclictest18935-21apt-config10:39:592
25166997253,13cyclictest22564-21munin-plugin-st09:49:580
25166997239,12cyclictest141rcu_preempt11:00:200
25166997238,13cyclictest141rcu_preempt08:55:320
25166997238,13cyclictest141rcu_preempt08:55:320
25166997237,7cyclictest141rcu_preempt09:00:200
25166997233,12cyclictest141rcu_preempt09:40:220
25166997226,8cyclictest141rcu_preempt12:29:050
2508327210,35sleep325098-21systemd-run07:09:593
2508327210,35sleep325098-21systemd-run07:09:593
25187997153,10cyclictest0-21swapper/211:00:332
25187997123,21cyclictest21226-21cat08:35:212
2517699713,59cyclictest7176-21unixbench_multi11:15:471
2517699713,57cyclictest11627-21ssh09:30:091
2517699712,58cyclictest8599-21cut07:55:301
25166997129,24cyclictest141rcu_preempt09:55:180
25166997129,24cyclictest141rcu_preempt09:55:180
25166997123,21cyclictest141rcu_preempt11:35:420
25196997051,10cyclictest401ktimers/310:55:193
25196997045,7cyclictest141rcu_preempt11:31:153
25196997029,19cyclictest0-21swapper/312:30:203
25196997027,7cyclictest141rcu_preempt08:35:303
25187997026,17cyclictest388-21runrttasks09:58:212
25187997026,17cyclictest388-21runrttasks09:58:212
25176997048,16cyclictest3055-21latency_hist11:10:001
25176997048,13cyclictest1695-21apt-key10:10:011
2517699704,56cyclictest27469-21apt-get10:55:111
2517699703,61cyclictest0-21swapper/109:35:101
2517699703,59cyclictest25185-21latency_hist07:10:011
2517699703,59cyclictest25185-21latency_hist07:10:011
2517699703,13cyclictest5824-21ssh10:15:321
2517699703,13cyclictest5824-21ssh10:15:321
2517699703,13cyclictest17203-21apt-get09:40:091
25166997042,8cyclictest141rcu_preempt12:06:570
25166997038,9cyclictest141rcu_preempt11:05:230
25166997037,13cyclictest141rcu_preempt09:30:300
25166997011,20cyclictest12-21ksoftirqd/010:55:130
25196996953,10cyclictest8767-21apt-config09:25:013
25196996937,8cyclictest141rcu_preempt11:47:533
25187996944,14cyclictest0-21swapper/211:25:312
25187996933,15cyclictest141rcu_preempt12:09:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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