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2026-06-04 - 04:46
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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
Characteristics of the 50 highest latencies:
System rackdslot0.osadl.org (updated Thu Jun 04, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31948992816,7cyclictest0-21swapper/020:50:480
3194899260,2cyclictest11366-21sed21:09:010
31949992416,5cyclictest0-21swapper/122:16:431
3194999230,19cyclictest0-21swapper/123:40:001
3194899230,15cyclictest0-21swapper/021:10:170
3194999222,19cyclictest304902chrt00:38:151
3194999222,19cyclictest30332chrt19:18:511
3194999220,21cyclictest9706-21perf23:05:011
3194999220,21cyclictest9069-21awk21:00:141
3194999220,21cyclictest24515-21grep00:25:211
3194999220,21cyclictest23335-21awk20:10:141
3194999220,21cyclictest23027-21fschecks_count22:30:141
3194999220,21cyclictest21889-21cat00:20:221
3194999220,21cyclictest18385-21ls21:25:141
3194999220,21cyclictest17929-21latency_hist20:00:021
3194999220,21cyclictest16040-21awk00:10:181
3194999220,21cyclictest15915-21expr21:20:111
3194999220,21cyclictest1473-21gpg-connect-age22:50:021
3194999220,21cyclictest12890-21sed21:10:131
3194999220,21cyclictest11929-21sed19:40:131
31948992217,4cyclictest0-21swapper/023:50:200
31948992215,6cyclictest0-21swapper/019:21:500
31948992215,6cyclictest0-21swapper/019:21:500
31948992214,7cyclictest8492-21grep21:00:110
31948992214,7cyclictest32623-21expr19:10:140
3194899220,2cyclictest16490-21cat22:19:550
3194899220,21cyclictest28212-21wc21:40:200
3194899220,17cyclictest10642-21perf22:10:000
3194899220,16cyclictest32063-21chrt23:42:160
3194899220,16cyclictest18813-21fschecks_time21:25:150
3194899220,16cyclictest12149-21ls22:10:180
3194899220,16cyclictest0-21swapper/019:40:140
3194899220,15cyclictest0-21swapper/022:35:160
3195799214,15cyclictest0-21swapper/221:02:282
3195799210,3cyclictest0-21swapper/222:41:192
3194999210,6cyclictest31591-21cat22:45:151
3194999210,6cyclictest0-21swapper/119:20:101
3194999210,6cyclictest0-21swapper/119:20:101
3194999210,20cyclictest7315-21timerwakeupswit22:00:221
3194999210,20cyclictest7113-21latency_hist23:00:001
3194999210,20cyclictest5334-21munin-run22:00:011
3194999210,20cyclictest5156-21if_lxdbr020:50:131
3194999210,20cyclictest493-21grep19:10:141
3194999210,20cyclictest31945-21chrt23:40:391
3194999210,20cyclictest30976-21sed21:45:201
3194999210,20cyclictest26900-21sed22:35:191
3194999210,20cyclictest26451-21if_lxdbr020:20:131
3194999210,20cyclictest25695-21timerandwakeup23:30:211
3194999210,20cyclictest23105-21timerwakeupswit23:25:201
3194999210,20cyclictest20460-21if_eno122:25:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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