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2026-03-31 - 07:06
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Tue Mar 31, 2026 00:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1659099260,16cyclictest0-21swapper/120:59:551
1659199247,13cyclictest0-21swapper/220:02:192
1659099220,21cyclictest3573-21latency_hist22:35:021
1659199214,2cyclictest3903-21cpuspeed_turbos22:35:142
16590992117,3cyclictest0-21swapper/120:38:571
1658999215,9cyclictest0-21swapper/019:17:140
1659199202,15cyclictest11526-21ntp_kernel_pll_21:50:182
1659199194,1cyclictest0-21swapper/223:21:072
16591991916,2cyclictest17177-21cut21:05:012
1659199190,17cyclictest6749-21proc_pri23:35:202
1659199190,16cyclictest3981-21H222:10:212
16590991916,1cyclictest0-21swapper/123:49:011
1659099190,18cyclictest29635-21nfsd421:25:171
1659099190,16cyclictest0-21swapper/119:12:461
16589991914,4cyclictest0-21swapper/023:15:000
16589991914,2cyclictest15231-21awk22:00:000
16591991814,3cyclictest0-21swapper/200:27:072
1659199181,16cyclictest30614-21grep19:35:012
1659199180,2cyclictest3989-21H222:10:212
1659199180,17cyclictest28578-21cstates21:25:142
1659199180,16cyclictest31201-21nfsd420:30:182
1659099182,15cyclictest25826-21seq19:25:141
1659099182,15cyclictest1666-21chrt23:28:071
16590991815,2cyclictest10837-21http_loadtime19:55:161
16590991814,3cyclictest19726-21dump-pmu-power21:10:001
16590991814,3cyclictest1525-21lxd23:20:351
16590991814,3cyclictest0-21swapper/119:20:001
1659099181,2cyclictest710-21chrt21:32:191
1659099181,16cyclictest22905-21chrt23:08:281
1659099180,17cyclictest11893-21apt-key22:50:011
1659099180,17cyclictest11893-21apt-key22:50:001
1659099180,15cyclictest3981-21H222:10:211
1658999182,1cyclictest0-21swapper/000:28:560
16589991814,3cyclictest19562-21sh21:09:000
1658999180,1cyclictest0-21swapper/021:16:120
1658999180,17cyclictest3898-21chrt21:38:260
1659199177,9cyclictest0-21swapper/219:12:152
16591991715,1cyclictest3988-21H222:10:212
16591991715,1cyclictest20698-21grep20:10:212
16591991715,1cyclictest0-21swapper/222:10:232
16591991715,1cyclictest0-21swapper/220:09:492
16591991714,2cyclictest9671-21expr22:45:132
16591991714,2cyclictest9671-21expr22:45:132
16591991714,2cyclictest9035-21wc20:50:142
16591991714,2cyclictest7522-21awk20:45:172
16591991714,2cyclictest29062-21pzem_current22:20:182
16591991714,2cyclictest29062-21pzem_current22:20:182
16591991714,2cyclictest19845-21missed_timers22:05:182
16591991714,2cyclictest19730-21perf21:10:012
16591991714,2cyclictest16800-21pzem_voltage22:55:212
16591991714,2cyclictest12213-21ls20:55:142
1659199170,2cyclictest7412-21anvil23:41:062
1659199170,2cyclictest7412-21anvil23:41:052
1659199170,2cyclictest4878-21nfsd420:40:182
1659199170,2cyclictest399-20systemd-journal21:59:562
1659199170,2cyclictest27235-21grep20:25:152
1659199170,2cyclictest2694-21chrt22:30:492
1659199170,2cyclictest24060-21nfsd421:15:192
1659199170,2cyclictest21915-21cpuspeed_turbos20:15:142
1659199170,2cyclictest16344-21cron23:55:012
1659199170,2cyclictest1521-21lxd00:00:352
1659199170,2cyclictest13457-21anvil23:47:472
1659199170,16cyclictest8594-21vmstat22:40:232
1659199170,16cyclictest24582-21sed23:10:192
1659199170,16cyclictest22257-21pickup23:18:172
1659199170,16cyclictest20509-21expr19:15:142
1659199170,16cyclictest16864-21cpuspeed_turbos23:55:172
1659199170,16cyclictest1007-21idleruntime-cro21:35:002
16590991715,1cyclictest0-21swapper/120:50:181
16590991714,2cyclictest8562-21chrt20:49:411
16590991714,2cyclictest8448-21cat19:50:161
16590991714,2cyclictest3707-21master20:43:491
16590991714,2cyclictest25542-21needreboot22:15:181
16590991714,2cyclictest21119-21runrttasks20:13:051
16590991714,2cyclictest14611-21threads21:55:231
16590991713,3cyclictest10945-21latency_hist23:45:011
16590991713,3cyclictest10945-21latency_hist23:45:001
1659099171,2cyclictest27082-21nvmesmart_nvme000:10:191
1659099171,15cyclictest0-21swapper/123:38:581
1659099171,15cyclictest0-21swapper/123:15:171
1659099170,2cyclictest8729-21grep21:45:191
1659099170,2cyclictest4709-21apache_processe21:40:121
1659099170,2cyclictest3293-21systemctl00:25:201
1659099170,2cyclictest20727-21chrt22:05:261
1659099170,2cyclictest1035-21thermald22:10:221
1659099170,1cyclictest3991-21H222:10:211
1659099170,1cyclictest3991-21H222:10:211
1659099170,16cyclictest699-21chrt19:37:411
1659099170,16cyclictest32364-21nfsd400:20:181
1659099170,16cyclictest3104-21pzem_energy21:35:201
1659099170,16cyclictest28512-21grep19:30:141
1659099170,16cyclictest24822-21nfsd423:10:191
1659099170,16cyclictest23882-21sed21:15:181
1659099170,16cyclictest22246-21cat20:15:141
1659099170,16cyclictest16745-21snapd21:12:491
1659099170,16cyclictest1522-21lxd22:22:511
1659099170,16cyclictest1522-21lxd22:22:501
1659099170,16cyclictest10151-21lxd23:52:351
1658999173,10cyclictest11792-21munin-run22:50:010
1658999173,10cyclictest11792-21munin-run22:50:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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