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2025-10-17 - 09:46
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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 50 highest latencies:
System rack0slot7.osadl.org (updated Fri Oct 17, 2025 00:46:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22344742210203,4sleep20-21swapper/219:09:488
22341712194175,12sleep30-21swapper/319:08:139
22344082185166,13sleep40-21swapper/419:09:3410
22341572181156,18sleep110-21swapper/1119:08:053
22340462180170,7sleep120-21swapper/1219:07:174
22165172180157,15sleep50-21swapper/519:05:0111
22340972174153,14sleep90-21swapper/919:07:4715
22338822174153,13sleep130-21swapper/1319:05:415
22339802172147,15sleep70-21swapper/719:06:4013
22342802160115,38sleep140-21swapper/1419:08:566
22344162128116,8sleep80-21swapper/819:09:3814
22339342124122,1sleep100-21swapper/1019:06:112
2231636211449,55sleep150-21swapper/1519:05:287
22170342107105,1sleep10-21swapper/119:05:141
22339272104102,1sleep60-21swapper/619:06:0612
221654028883,3sleep00-21swapper/019:05:130
2235088996916,47cyclictest0-21swapper/821:10:4114
2235088996438,0cyclictest0-21swapper/821:31:1314
223508499634,6cyclictest817897-21gnome-shell21:25:0113
26935802610,0sleep140-21swapper/1421:10:286
2235084996119,36cyclictest3852735-21G115:07:4413
2235084996119,36cyclictest3852735-21G115:07:4413
2235094996058,1cyclictest0-21swapper/1020:13:252
2235078995958,1cyclictest0-21swapper/520:13:2411
2235088995712,29cyclictest0-21swapper/820:17:0814
223508499565,2cyclictest817627-21Xorg21:30:0013
223507899513,22cyclictest2505580-21dav1d-worker20:29:1711
223507899513,22cyclictest2505580-21dav1d-worker20:29:1711
2235071995129,16cyclictest817639-21dbus-daemon21:19:379
223508499503,10cyclictest817627-21Xorg19:54:3713
223508499502,6cyclictest2336017-21Isolated15:07:4413
2235099994929,17cyclictest2066817-21Timer21:29:164
223508499481,11cyclictest749598-21x0vncserver21:04:2013
223508499481,11cyclictest749598-21x0vncserver21:04:2013
2235099994744,2cyclictest0-21swapper/1221:21:374
2235099994744,2cyclictest0-21swapper/1221:21:374
2235084994711,32cyclictest817627-21Xorg21:10:4113
2235113994645,0cyclictest0-21swapper/1521:28:497
2235088994624,16cyclictest0-21swapper/821:21:3214
2235088994624,16cyclictest0-21swapper/821:21:3214
2235088994620,26cyclictest817627-21Xorg21:05:5114
2235062994610,11cyclictest0-21swapper/021:35:010
2235113994544,0cyclictest0-21swapper/1519:47:577
223510499456,26cyclictest0-21swapper/1321:46:005
223510499456,26cyclictest0-21swapper/1321:46:005
223509999450,45cyclictest1638870-21kworker/12:0+mm_percpu_wq19:47:564
2235088994518,17cyclictest529015-21WRScene~derLP#120:55:1414
2235104994438,3cyclictest2737287-21Timer21:29:165
2235090994442,1cyclictest0-21swapper/921:00:5115
2235090994442,1cyclictest0-21swapper/921:00:5015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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