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2026-09-07 - 20:45
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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 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
1599399180,3cyclictest15570-21timerandwakeup09:00:210
1600399172,1cyclictest0-21swapper/211:10:592
16003991715,1cyclictest0-21swapper/211:15:202
16003991715,1cyclictest0-21swapper/207:45:142
16003991714,2cyclictest3989-21H222:10:212
16003991714,2cyclictest3985-21H222:10:212
16003991714,2cyclictest3985-21H222:10:212
16003991714,2cyclictest32629-21/usr/sbin/munin12:25:192
16003991714,2cyclictest29159-21/usr/sbin/munin08:30:162
16003991714,2cyclictest21415-21expr12:05:152
16003991714,2cyclictest20753-21ls07:15:232
16003991714,2cyclictest2069-21systemd-udevd11:48:522
16003991714,2cyclictest19683-21nfsd410:05:172
16003991714,2cyclictest15945-21lxd07:56:432
16003991714,2cyclictest14620-21ls10:55:122
16003991714,2cyclictest14131-21expr09:00:142
1600399171,1cyclictest0-21swapper/207:25:172
1600399170,2cyclictest7094-21latency12:35:172
1600399170,2cyclictest3983-21H222:10:212
1600399170,2cyclictest27115-21expr12:15:132
1600399170,2cyclictest26802-21pzem_current09:20:222
1600399170,2cyclictest16161-21nfsd408:05:182
1600399170,2cyclictest13676-21latency_hist09:00:002
1600399170,16cyclictest6490-21chrt09:42:292
1600399170,16cyclictest5080-21chrt08:44:142
1600399170,16cyclictest5080-21chrt08:44:132
1600399170,16cyclictest3987-21H222:10:212
1600399170,16cyclictest3983-21H222:10:212
1600399170,16cyclictest28251-21cpuspeed_turbos09:25:132
1600399170,16cyclictest27771-21expr07:30:152
1600399170,16cyclictest24525-21nfsd408:20:182
1600399170,16cyclictest17872-21chrt10:02:542
1600399170,16cyclictest1445-21kernelversion07:40:162
1600399170,16cyclictest13590-21ntp_offset08:00:162
1600399170,16cyclictest12649-21/usr/sbin/munin09:55:002
1600399170,16cyclictest1035-21thermald10:10:222
1600399170,16cyclictest0-21swapper/209:36:342
15998991715,1cyclictest0-21swapper/107:48:401
15998991714,2cyclictest9276-21latency08:50:201
15998991714,2cyclictest7724-21smartctl07:50:191
15998991714,2cyclictest5601-21lxd10:42:441
15998991714,2cyclictest31505-21munin-run08:35:011
15998991714,2cyclictest24385-21sed11:10:231
15998991714,2cyclictest2364-21chrt12:26:231
15998991714,2cyclictest19031-21fschecks_count12:00:141
15998991714,2cyclictest1856-21systemd-udevd07:24:521
15998991712,4cyclictest15427-21nfsd410:55:161
1599899171,15cyclictest0-21swapper/112:17:461
1599899170,2cyclictest993-21dbus-daemon09:20:221
1599899170,2cyclictest993-21dbus-daemon07:55:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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