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2026-07-20 - 22:17
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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 20 highest latencies:
System rackcslot0.osadl.org (updated Mon Jul 20, 2026 00:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
305812119103,12sleep30-21swapper/319:06:469
2445921180,7sleep43132799cyclictest21:34:0710
307332117102,10sleep140-21swapper/1419:08:506
30561211391,17sleep20-21swapper/219:06:298
389721110,1sleep40-21swapper/400:37:1910
30869210875,29sleep70-21swapper/719:10:0313
30644210591,10sleep40-21swapper/419:07:3610
2333721050,2sleep990-21ksoftirqd/923:26:3215
2333721050,2sleep990-21ksoftirqd/923:26:3215
30875210391,8sleep130-21swapper/1319:10:095
2493621010,1sleep20-21swapper/223:07:098
263822990,5sleep03132099cyclictest00:02:130
116522990,0sleep4481ktimersoftd/400:10:3410
321732980,6sleep103133599cyclictest21:47:192
226202980,8sleep13132199cyclictest00:16:081
3056429783,10sleep50-21swapper/519:06:3211
303342970,0sleep40-21swapper/422:06:1210
205792970,1sleep00-21swapper/021:39:560
190832970,0sleep120-21swapper/1222:02:044
240532960,1sleep90-21swapper/921:46:3015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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