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2026-07-20 - 13:11
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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 Mon Jul 20, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2024993027,2cyclictest0-21swapper/120:15:221
2019993014,15cyclictest7145-21missed_timers23:05:180
202499230,18cyclictest0-21swapper/100:17:231
202499230,18cyclictest0-21swapper/100:17:231
202899220,20cyclictest0-21swapper/223:18:302
202899211,17cyclictest20233-21grep19:40:162
2024992121,0cyclictest0-21swapper/123:45:161
202499210,6cyclictest20235-21fschecks_count19:40:161
202899203,16cyclictest27140-21mailstats21:45:202
2028992018,1cyclictest28-21ksoftirqd/220:37:282
2028992016,3cyclictest0-21swapper/220:54:132
2028992016,3cyclictest0-21swapper/220:10:142
202499203,16cyclictest0-21swapper/123:45:001
202499203,16cyclictest0-21swapper/121:00:361
2024992018,1cyclictest21-21ksoftirqd/123:11:101
2024992017,2cyclictest30968-21nfsd420:55:201
2024992016,3cyclictest3976-21H222:10:211
2024992014,3cyclictest0-21swapper/122:45:111
202899194,11cyclictest5084-21cat19:15:002
202899192,2cyclictest12887-21nfsd421:20:272
2028991917,1cyclictest4237-21kernelversion23:00:182
2028991917,1cyclictest0-21swapper/223:05:142
2028991917,1cyclictest0-21swapper/221:40:132
2028991916,2cyclictest9259-21ls21:15:152
2028991916,1cyclictest0-21swapper/200:25:252
202899191,17cyclictest0-21swapper/222:25:002
202899190,16cyclictest12740-21cat22:20:012
202499193,15cyclictest16735-21needreboot22:25:171
202499192,2cyclictest23895-21grep00:30:211
202499192,1cyclictest0-21swapper/122:40:211
202499192,16cyclictest3045-21basename23:55:151
202499192,16cyclictest29962-21cat21:50:211
202499192,16cyclictest1478-21chrt23:51:401
2024991919,0cyclictest0-21swapper/119:30:181
2024991917,1cyclictest0-21swapper/121:46:501
2024991917,1cyclictest0-21swapper/120:33:301
2024991917,1cyclictest0-21swapper/119:23:461
2024991916,2cyclictest2886-21iscsid21:25:201
2024991916,2cyclictest25862-21latency_hist23:40:011
2024991916,2cyclictest25576-21cut20:45:161
2024991916,1cyclictest0-21swapper/119:13:371
2024991915,3cyclictest3981-21H222:10:211
2024991915,3cyclictest3981-21H222:10:211
202499190,2cyclictest3989-21H222:10:211
202499190,1cyclictest0-21swapper/121:16:231
202499190,18cyclictest3979-21H222:10:211
202499190,18cyclictest14637-21timerandwakeup22:20:221
201999192,2cyclictest20565-21chrt22:34:350
201999192,16cyclictest3979-21H222:10:210
2019991915,3cyclictest0-21swapper/000:35:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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