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2025-07-07 - 22:18
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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 rack8slot4.osadl.org (updated Mon Jul 07, 2025 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27253402226167,21sleep50-21swapper/507:08:255
27253282226193,21sleep20-21swapper/207:08:142
27252412226169,17sleep70-21swapper/707:06:597
27232332223190,21sleep40-21swapper/407:05:594
27231702221168,17sleep60-21swapper/607:05:056
27232142220164,44sleep30-21swapper/307:05:423
27252352216183,21sleep10-21swapper/107:06:531
27232472216186,19sleep00-21swapper/007:06:110
272565599320,31cyclictest2854078-21sh11:05:003
272566099310,3cyclictest0-21swapper/412:01:204
272565599310,30cyclictest2821261-21apt10:05:003
272564599310,30cyclictest2823942-21idleruntime-cro10:10:000
272567099300,29cyclictest0-21swapper/709:16:207
272567099300,1cyclictest2731602-21cron07:20:007
2725667993028,1cyclictest2800232-21apt-get09:26:196
272566799300,29cyclictest2826625-21sh10:15:006
2725664993028,1cyclictest2769567-21sh08:30:015
272566499300,29cyclictest2791106-21sh09:10:015
2725660993028,1cyclictest2780847-21apt-get08:51:194
272566099300,29cyclictest2856771-21apt11:10:004
272566099300,29cyclictest1-21systemd10:20:004
272565599300,1cyclictest1202534-21systemd-journal09:45:013
272564999300,29cyclictest2886402-21apt12:05:001
272564999300,29cyclictest2758808-21idleruntime-cro08:10:011
272564999300,29cyclictest2728226-21latency_hist07:15:001
2725645993028,1cyclictest2897673-21apt-get12:26:190
2725645993028,1cyclictest2897673-21apt-get12:26:190
2725670992927,1cyclictest2816371-21apt-get09:56:187
272567099290,28cyclictest0-21swapper/711:16:207
272567099290,28cyclictest0-21swapper/710:31:187
272567099290,28cyclictest0-21swapper/708:31:197
272567099290,28cyclictest0-21swapper/708:26:207
272567099290,1cyclictest2840877-21apt-get10:41:207
272567099290,0cyclictest0-21swapper/712:01:207
272566799290,28cyclictest2737495-21apt-get07:31:186
272566799290,28cyclictest0-21swapper/608:06:176
272566499290,28cyclictest0-21swapper/510:51:215
2725660992927,1cyclictest2840349-21sh10:40:004
2725660992926,2cyclictest2899857-21turbostat.cron12:30:014
2725660992926,2cyclictest2899857-21turbostat.cron12:30:014
272566099290,28cyclictest0-21swapper/409:56:184
272566099290,28cyclictest0-21swapper/407:56:184
272566099290,28cyclictest0-21swapper/407:56:184
272566099290,28cyclictest0-21swapper/407:11:194
2725655992928,1cyclictest0-21swapper/308:36:183
2725655992928,1cyclictest0-21swapper/308:26:203
272565599290,29cyclictest0-21swapper/309:16:203
272565599290,1cyclictest0-21swapper/308:45:013
272565099290,28cyclictest0-21swapper/207:26:182
272564999290,28cyclictest0-21swapper/108:30:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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