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2026-09-07 - 17:56
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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 Sep 07, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1599899360,33cyclictest0-21swapper/109:40:191
1599399273,5cyclictest0-21swapper/011:34:590
15998992615,0cyclictest0-21swapper/108:41:041
15998992615,0cyclictest0-21swapper/108:41:041
1599399241,18cyclictest6035-21cat07:50:010
1599399230,8cyclictest0-21swapper/010:54:220
1599399230,8cyclictest0-21swapper/010:54:210
1599399230,5cyclictest0-21swapper/008:10:430
15993992213,0cyclictest0-21swapper/007:40:160
1599399220,21cyclictest843-21systemd-network10:03:540
1600399214,6cyclictest0-21swapper/211:04:222
1599399210,19cyclictest31898-21python312:25:000
16003992018,1cyclictest28-21ksoftirqd/212:20:242
1600399200,19cyclictest843-21systemd-network11:36:552
15998992013,6cyclictest8467-21php7.012:38:591
1599899200,19cyclictest426-21systemd-udevd11:24:511
15993992016,3cyclictest0-21swapper/007:23:020
15993992014,5cyclictest0-21swapper/007:50:180
1599399201,18cyclictest4030-21groups22:10:210
1599399201,18cyclictest4030-21groups22:10:210
1599399201,12cyclictest0-21swapper/012:14:300
1599899192,16cyclictest0-21swapper/111:38:531
15998991915,3cyclictest0-21swapper/109:25:141
1599899190,5cyclictest0-21swapper/111:33:171
1599899190,18cyclictest870-21systemd-logind10:26:511
1599899190,18cyclictest426-21systemd-udevd08:18:521
1599399190,16cyclictest0-21swapper/009:48:480
16003991815,2cyclictest21638-21chrt11:06:462
16003991814,2cyclictest9473-21python309:50:012
16003991813,4cyclictest25209-21uname12:10:172
1600399181,1cyclictest0-21swapper/208:20:002
1600399180,3cyclictest455-21plymouthd07:40:012
1600399180,2cyclictest3989-21H222:10:212
1600399180,17cyclictest5700-21perf12:34:592
1600399180,17cyclictest3985-21H222:10:212
1600399180,16cyclictest3983-21H222:10:212
1600399180,16cyclictest3983-21H222:10:212
1599899182,15cyclictest26620-21chrt07:27:481
1599899182,15cyclictest21-21ksoftirqd/109:35:531
15998991815,2cyclictest19291-21latency_hist11:05:001
15998991814,3cyclictest0-21swapper/108:45:181
15998991814,3cyclictest0-21swapper/108:10:041
15998991813,2cyclictest3985-21H222:10:211
1599899180,16cyclictest3981-21H222:10:211
1599399183,1cyclictest0-21swapper/008:35:180
15993991815,2cyclictest12890-21fschecks_time08:00:140
1599399181,2cyclictest2637-21chrt12:29:570
1599399181,16cyclictest8768-21nfsd411:40:190
1599399181,16cyclictest19638-21fschecks_count07:15:150
1599399180,3cyclictest30350-21python311:25:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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