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2026-06-17 - 14:02
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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 Wed Jun 17, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25629992320,2cyclictest8882-21mailstats23:20:211
25628992316,6cyclictest0-21swapper/000:20:000
2563099213,11cyclictest24731-21ls22:55:002
2562999210,6cyclictest6561-21nfsd422:20:181
2562999210,18cyclictest0-21swapper/122:59:281
25628992113,4cyclictest0-21swapper/021:45:330
2563099200,19cyclictest843-21systemd-network22:45:212
2563099192,2cyclictest29746-21cut21:10:012
25630991914,3cyclictest0-21swapper/222:17:082
2563099190,18cyclictest12456-21sendmail_mailqu19:40:212
2563099190,15cyclictest0-21swapper/223:45:262
2562999190,18cyclictest843-21systemd-network22:39:091
2562899193,15cyclictest9-21ksoftirqd/023:40:210
2562899192,15cyclictest0-21swapper/022:10:330
2562899190,18cyclictest0-21swapper/021:44:140
2562899190,18cyclictest0-21swapper/021:44:140
25630991815,2cyclictest15699-21nfsd421:40:172
25630991815,2cyclictest15699-21nfsd421:40:162
25630991815,2cyclictest11117-21expr22:30:142
25630991814,3cyclictest32235-21tr00:05:172
25630991814,3cyclictest30466-21nvmesmart_nvme019:15:202
25630991814,3cyclictest0-21swapper/220:38:562
2563099180,2cyclictest3981-21H222:10:212
2563099180,17cyclictest4750-21nfsd400:10:182
2562999183,1cyclictest0-21swapper/121:40:391
2562999183,1cyclictest0-21swapper/121:40:381
2562999182,15cyclictest15140-21fw_packets00:30:161
2562999182,15cyclictest0-21swapper/100:24:491
25629991816,1cyclictest0-21swapper/120:46:001
2562999180,3cyclictest7785-21if_lxdbr020:30:171
2562999180,3cyclictest1351-21lxd20:38:511
2562999180,15cyclictest0-21swapper/121:02:251
2562899182,15cyclictest37782sleep023:11:330
2562899181,16cyclictest11295-21perf00:25:000
2562899180,17cyclictest3351-21lxd20:00:510
2562899180,16cyclictest24683-21python322:55:000
25630991715,1cyclictest27061-21http_loadtime19:10:152
25630991715,1cyclictest0-21swapper/223:15:132
25630991715,1cyclictest0-21swapper/222:45:012
25630991715,1cyclictest0-21swapper/221:25:232
25630991714,2cyclictest9596-21pzem_energy22:25:202
25630991714,2cyclictest32747-21latency_hist20:20:012
25630991714,2cyclictest32737-21timerwakeupswit23:05:232
25630991714,2cyclictest27669-21cpuspeed_turbos20:10:152
25630991714,2cyclictest25300-21grep23:50:192
25630991714,2cyclictest22678-21needreboot20:55:182
25630991714,2cyclictest21340-21latency_hist20:55:012
25630991714,2cyclictest2100-21ps20:20:192
25630991714,2cyclictest12345-21perf23:30:002
2563099171,15cyclictest0-21swapper/222:55:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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