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2026-04-20 - 06:15
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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 Mon Apr 20, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1669299225,11cyclictest0-21swapper/022:10:210
1670399216,1cyclictest0-21swapper/220:16:212
1669799212,18cyclictest0-21swapper/120:17:061
1669299210,18cyclictest0-21swapper/022:51:540
16692992016,3cyclictest0-21swapper/022:49:540
16692992013,4cyclictest0-21swapper/021:31:530
1670399193,15cyclictest28-21ksoftirqd/220:00:172
1670399192,16cyclictest25729-21fschecks_time00:10:152
16703991917,1cyclictest28-21ksoftirqd/200:20:542
1670399190,5cyclictest870-21systemd-logind21:56:522
1670399190,4cyclictest426-21systemd-udevd19:12:522
1669799193,15cyclictest0-21swapper/119:41:101
1669799192,1cyclictest0-21swapper/122:16:391
16697991913,4cyclictest0-21swapper/119:17:471
1669799190,4cyclictest399-20systemd-journal22:30:011
1669799190,18cyclictest0-21swapper/100:13:561
16692991916,1cyclictest0-21swapper/023:15:490
1669299191,3cyclictest0-21swapper/020:47:240
1669299191,16cyclictest0-21swapper/022:55:140
1669299190,16cyclictest4099-21H222:10:210
1670399183,14cyclictest0-21swapper/221:10:412
1670399182,2cyclictest5751-21php7.022:39:002
1670399182,15cyclictest3950-21C222:10:212
16703991816,1cyclictest32638-21mailstats19:35:202
16703991816,1cyclictest30338-21chrt19:30:572
16703991816,1cyclictest28-21ksoftirqd/223:35:142
16703991816,1cyclictest28-21ksoftirqd/220:50:142
16703991815,2cyclictest3202-21JS22:10:212
16703991815,2cyclictest25919-21ps22:15:202
16703991815,2cyclictest16716-21fschecks_count22:00:142
16703991815,2cyclictest0-21swapper/222:55:182
16703991814,3cyclictest2007-21systemd-journal23:20:222
16703991814,2cyclictest4035-21H222:10:212
1670399180,2cyclictest28937-21sshd20:27:432
1670399180,17cyclictest4035-21H222:10:212
1669799182,2cyclictest16691-21cyclictest21:45:031
1669799182,15cyclictest3207-21JS22:10:211
1669799182,15cyclictest13082-21grep22:50:181
16697991816,1cyclictest0-21swapper/123:52:501
16697991816,1cyclictest0-21swapper/121:10:001
16697991815,2cyclictest0-21swapper/100:00:181
16697991815,1cyclictest0-21swapper/119:14:351
1669799181,16cyclictest1085-21gdbus22:35:201
1669799180,2cyclictest3989-21H222:10:211
1669799180,2cyclictest3979-21H222:10:211
1669799180,2cyclictest25213-21munin-run19:25:011
1669299183,1cyclictest0-21swapper/019:14:170
1669299182,1cyclictest5597-21nfsd400:30:190
1669299182,15cyclictest0-21swapper/019:53:100
16692991815,2cyclictest27468-21cat22:20:150
1669299180,2cyclictest3976-21H222:10:210
1669299180,2cyclictest3976-21H222:10:210
1669299180,17cyclictest0-21swapper/000:02:580
1669299180,16cyclictest9129-21nfsd421:45:180
1669299180,15cyclictest0-21swapper/022:30:170
1670399172,15cyclictest28-21ksoftirqd/221:25:232
16703991715,1cyclictest291892chrt22:20:442
16703991715,1cyclictest0-21swapper/221:35:142
16703991714,2cyclictest5601-21lxd22:28:502
16703991714,2cyclictest3991-21H222:10:212
16703991714,2cyclictest26683-21sed21:20:182
16703991714,2cyclictest16464-21cat23:55:002
16703991714,2cyclictest13384-21mailstats20:55:222
1670399171,15cyclictest8973-21sed20:50:012
1670399171,15cyclictest239672chrt22:14:122
1670399171,15cyclictest0-21swapper/223:45:132
1670399170,2cyclictest31593-21cpuspeed_turbos21:30:142
1670399170,2cyclictest29541-21apache_volume20:30:132
1670399170,2cyclictest1708-21nfsd422:30:182
1670399170,2cyclictest15979-21grep21:00:222
1670399170,2cyclictest11635-21cut19:55:212
1670399170,1cyclictest3983-21H222:10:212
1670399170,1cyclictest3983-21H222:10:212
1670399170,16cyclictest9249-21grep23:40:172
1670399170,16cyclictest843-21systemd-network20:41:402
1670399170,16cyclictest2470-21pzem_power00:25:222
1670399170,16cyclictest2470-21pzem_power00:25:222
1670399170,16cyclictest20936-21ls23:05:172
1670399170,16cyclictest20015-21nvmesmart_nvme020:10:202
1670399170,16cyclictest16836-21cron21:05:012
1670399170,16cyclictest10458-21munin-plugin-st21:50:012
1669799172,1cyclictest17746-21nfsd423:55:181
16697991714,2cyclictest4147-21perf23:35:001
16697991714,2cyclictest4035-21H222:10:211
16697991714,2cyclictest31398-21cat19:35:131
16697991714,2cyclictest31213-21smartctl00:20:161
16697991714,2cyclictest1522-21lxd21:32:501
16697991714,1cyclictest0-21swapper/100:37:511
16697991713,3cyclictest5176-21cpuspeed_turbos23:35:141
1669799171,2cyclictest21617-21date22:10:001
1669799170,2cyclictest485-21cut20:35:161
1669799170,2cyclictest21955-21cpuspeed_turbos22:10:141
1669799170,2cyclictest17179-21latency_hist21:05:011
1669799170,2cyclictest14093-21perf21:00:001
1669799170,16cyclictest8468-21expr23:40:131
1669799170,16cyclictest6603-21cat22:40:141
1669799170,16cyclictest6257-21sed19:45:191
1669799170,16cyclictest4508-21kernelversion20:40:171
1669799170,16cyclictest3991-21H222:10:211
1669799170,16cyclictest3991-21H222:10:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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