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2026-05-18 - 02:45
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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 Mon May 18, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
183702198184,10sleep10-21swapper/119:10:001
181502187168,13sleep00-21swapper/019:07:100
180342182164,13sleep30-21swapper/319:05:413
161512167151,12sleep20-21swapper/219:05:072
222132400,0sleep10-21swapper/122:00:181
245412380,0sleep10-21swapper/122:49:301
206972110,0sleep20-21swapper/222:15:202
302402100,0sleep10-21swapper/123:07:431
185349971,5cyclictest61-21kswapd023:45:130
9835260,0sleep20-21swapper/200:17:262
3028260,0sleep00-21swapper/023:58:150
185349964,1cyclictest17537-21ssh22:30:130
185349960,3cyclictest11311-21perf21:40:010
3099250,0sleep20-21swapper/200:30:152
185459951,3cyclictest0-21swapper/322:55:023
185459951,3cyclictest0-21swapper/322:15:133
185459950,5cyclictest0-21swapper/321:25:443
185459950,1cyclictest19908-21diskstats20:15:143
185459950,0cyclictest0-21swapper/323:11:313
185409953,2cyclictest2827-21kworker/2:123:39:052
185409953,2cyclictest21172-21kworker/2:022:44:172
185409951,2cyclictest0-21swapper/219:30:112
185409950,5cyclictest0-21swapper/223:07:482
185409950,5cyclictest0-21swapper/222:55:012
185409950,5cyclictest0-21swapper/200:08:142
185359951,2cyclictest0-21swapper/100:35:111
185359950,5cyclictest0-21swapper/122:40:491
185349953,1cyclictest19145-21latency_hist20:15:000
185349950,5cyclictest0-21swapper/021:42:420
185349950,5cyclictest0-21swapper/021:14:450
185349950,5cyclictest0-21swapper/020:20:020
185349950,0cyclictest24952-21ssh23:20:370
185349950,0cyclictest0-21swapper/023:27:180
14242250,4sleep014270-21ssh22:28:280
185459944,0cyclictest673-21kworker/3:021:45:083
185459944,0cyclictest673-21kworker/3:021:00:213
185459944,0cyclictest673-21kworker/3:020:04:233
185459944,0cyclictest0-21swapper/321:55:083
185459940,4cyclictest14364-21diskmemload23:50:533
185459940,4cyclictest12106-21apt-get21:05:023
185459940,4cyclictest0-21swapper/323:58:363
185459940,4cyclictest0-21swapper/323:43:033
185459940,4cyclictest0-21swapper/323:35:013
185459940,4cyclictest0-21swapper/323:30:043
185459940,4cyclictest0-21swapper/323:25:113
185459940,4cyclictest0-21swapper/323:05:063
185459940,4cyclictest0-21swapper/323:04:093
185459940,4cyclictest0-21swapper/322:41:313
185459940,4cyclictest0-21swapper/322:38:193
185459940,4cyclictest0-21swapper/322:30:423
185459940,4cyclictest0-21swapper/322:05:123
185459940,4cyclictest0-21swapper/322:03:423
185459940,4cyclictest0-21swapper/321:41:103
185459940,4cyclictest0-21swapper/321:31:033
185459940,4cyclictest0-21swapper/321:20:023
185459940,4cyclictest0-21swapper/321:10:133
185459940,4cyclictest0-21swapper/320:50:113
185459940,4cyclictest0-21swapper/319:45:123
185459940,4cyclictest0-21swapper/319:15:143
185459940,4cyclictest0-21swapper/300:38:533
185459940,4cyclictest0-21swapper/300:33:413
185459940,4cyclictest0-21swapper/300:21:233
185459940,4cyclictest0-21swapper/300:18:273
185459940,4cyclictest0-21swapper/300:10:123
185459940,4cyclictest0-21swapper/300:08:043
185459940,4cyclictest0-21swapper/300:01:013
185459940,3cyclictest4255-21cut20:50:003
185459940,3cyclictest30021-21cat19:30:133
185459940,3cyclictest26812-21apt-get20:30:123
185459940,3cyclictest26632-21chrt19:22:463
185459940,3cyclictest26475-21df_inode22:50:133
185459940,3cyclictest26433-21irqstats21:15:203
185459940,3cyclictest24322-21ssh00:25:003
185459940,3cyclictest23042-21diskstats23:20:143
185459940,3cyclictest1707-21ssh21:35:143
185459940,3cyclictest1690-21ssh21:50:203
185459940,3cyclictest15472-21ssh22:45:043
185459940,3cyclictest14364-21diskmemload23:15:593
185459940,3cyclictest14364-21diskmemload22:25:043
185459940,2cyclictest0-21swapper/323:47:423
185409944,0cyclictest31-21ksoftirqd/223:55:002
185409944,0cyclictest31-21ksoftirqd/223:15:002
185409944,0cyclictest0-21swapper/222:24:472
185409943,1cyclictest5070-21grep20:50:142
185409943,1cyclictest31-21ksoftirqd/223:15:122
185409943,1cyclictest26660-21/usr/sbin/munin00:10:142
185409941,3cyclictest802-21snmpd23:26:152
185409941,2cyclictest0-21swapper/222:50:112
185409941,2cyclictest0-21swapper/222:00:122
185409941,2cyclictest0-21swapper/220:00:112
185409941,1cyclictest0-21swapper/222:35:092
185409940,4cyclictest5803-21ntp_states19:45:192
185409940,4cyclictest10238-21apt-get21:55:022
185409940,4cyclictest0-21swapper/223:55:092
185409940,4cyclictest0-21swapper/223:30:112
185409940,4cyclictest0-21swapper/222:30:132
185409940,4cyclictest0-21swapper/222:05:122
185409940,4cyclictest0-21swapper/221:45:382
185409940,4cyclictest0-21swapper/221:32:222
185409940,4cyclictest0-21swapper/221:22:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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