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2025-05-02 - 12:45
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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
Characteristics of the 50 highest latencies:
System rackdslot2.osadl.org (updated Fri May 02, 2025 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
82812214170,33sleep10-21swapper/119:09:031
137391209176,22phc2sys0-21swapper/319:07:133
61782208174,22sleep20-21swapper/219:05:092
81832204171,22sleep00-21swapper/019:07:440
865199762,33cyclictest22540-21latency_hist21:55:002
865199690,25cyclictest28324-21apt-config21:00:012
865199690,25cyclictest28324-21apt-config21:00:012
865199690,23cyclictest24338-21grep20:50:212
865199680,24cyclictest20176-21grep20:40:292
865199670,30cyclictest22067-21grep00:05:282
865199661,24cyclictest12421-21grep19:15:252
865199660,23cyclictest6261-21grep21:20:222
865199651,24cyclictest13099-21phc2sys-jitter20:25:252
865199651,24cyclictest13099-21phc2sys-jitter20:25:252
865199651,22cyclictest24905-21apt-get22:00:002
865199650,26cyclictest0-21swapper/219:15:002
865199650,25cyclictest22185-21sed19:35:272
865199650,25cyclictest17068-21grep23:55:232
865199650,23cyclictest18805-21ls22:50:292
865199641,25cyclictest27805-21wc00:20:002
865199640,23cyclictest32198-21cut21:05:252
109772640,2sleep1865099cyclictest21:30:201
865199630,25cyclictest19419-21find21:45:262
865199630,25cyclictest1876-21sed23:25:152
865199630,24cyclictest19793-21tail19:30:272
865199630,24cyclictest12670-21cstates22:40:142
865199630,23cyclictest4750-21cut23:30:222
865199630,23cyclictest31422-21phc2sys00:25:242
865199620,24cyclictest7318-21sed23:35:212
865199620,23cyclictest8846-21cpuspeed_turbos23:40:142
865199620,21cyclictest29151-21latency_hist23:15:002
865199620,19cyclictest0-21swapper/220:45:292
8649996231,4cyclictest9-21ksoftirqd/022:20:180
8649996231,4cyclictest9-21ksoftirqd/021:35:000
865199611,25cyclictest27730-21/usr/sbin/munin22:05:272
865199610,24cyclictest28953-21sed00:20:242
865199601,22cyclictest14830-21mailstats23:50:282
8650996025,4cyclictest25-21ksoftirqd/100:00:141
8650996024,4cyclictest25-21ksoftirqd/119:55:271
865199590,26cyclictest0-21swapper/223:05:152
865199590,24cyclictest15710-21bc21:40:142
865199590,22cyclictest19624-21sensors00:00:262
865199590,21cyclictest23364-21fschecks_time19:40:242
112212590,4sleep111223-21unixbench_singl20:20:311
865199580,31cyclictest27450-21sed19:50:002
865199580,24cyclictest12527-21sensors23:45:282
865199580,22cyclictest31566-21/usr/sbin/munin23:20:292
8650995825,4cyclictest25-21ksoftirqd/123:10:241
8650995824,3cyclictest25-21ksoftirqd/119:25:281
8649995831,4cyclictest9-21ksoftirqd/000:15:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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