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2026-04-21 - 23:02
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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 100 highest latencies:
System rackdslot3.osadl.org (updated Tue Apr 21, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
67772209175,23sleep10-21swapper/107:07:301
48462203169,23sleep30-21swapper/307:05:113
68502201169,21sleep20-21swapper/207:08:272
68732200168,22sleep00-21swapper/007:08:450
7271997115,9cyclictest23888-21cat10:00:002
179952710,1sleep30-21swapper/307:30:213
7271996810,10cyclictest10179-21unixbench_singl08:20:272
7271996810,10cyclictest10179-21unixbench_singl08:20:262
7271996711,10cyclictest27386-21apt11:14:592
7271996710,17cyclictest585-21fschecks_count11:25:162
727199669,10cyclictest0-21swapper/210:05:142
7271996616,9cyclictest26550-21grep12:20:142
7271996615,10cyclictest19035-21sed07:35:002
7271996614,9cyclictest10888-21phc2sys-jitter07:15:232
7271996515,11cyclictest1221-21date08:05:012
7271996513,9cyclictest20974-21fschecks_count08:45:142
7271996510,11cyclictest2047-21cut12:35:202
7271996414,10cyclictest7070-21sed08:15:202
7271996414,10cyclictest20523-21cat11:00:112
7271996413,9cyclictest23878-21apt-key07:45:002
727199638,16cyclictest0-21swapper/210:30:202
7271996313,17cyclictest20705-21timerandwakeup07:35:252
7271996312,9cyclictest5990-21irqrtprio09:20:182
7271996312,9cyclictest5990-21irqrtprio09:20:182
727199629,17cyclictest0-21swapper/212:00:172
727199629,17cyclictest0-21swapper/211:45:132
727199629,17cyclictest0-21swapper/210:45:192
727199628,18cyclictest0-21swapper/209:35:012
7271996213,9cyclictest23596-21cut08:50:192
7271996213,9cyclictest23596-21cut08:50:182
7271996213,9cyclictest17369-21cut09:45:152
7271996212,11cyclictest440-21cstates09:10:142
7271996210,16cyclictest207-21systemd-journal09:02:212
7271996210,10cyclictest16144-21grep11:55:322
7269996229,5cyclictest9-21ksoftirqd/008:15:000
7269996224,5cyclictest9-21ksoftirqd/007:50:230
7269996224,5cyclictest9-21ksoftirqd/007:50:230
7271996114,9cyclictest14345-21sed11:55:012
7271996112,17cyclictest6976-21chrt11:38:312
7271996111,11cyclictest14540-21sed09:40:002
7271996110,9cyclictest15455-21irqrtprio09:40:182
7269996130,7cyclictest9-21ksoftirqd/008:50:160
7269996130,7cyclictest9-21ksoftirqd/008:50:160
7269996126,6cyclictest9-21ksoftirqd/008:45:000
139391600,1ptp4l401ktimersoftd/312:29:173
7271995914,10cyclictest29192-21cat11:15:242
7271995914,10cyclictest29192-21cat11:15:232
7271995913,9cyclictest1931-21hddtemp_smartct10:20:162
7271995911,12cyclictest26241-21sed12:20:002
7269995929,7cyclictest9-21ksoftirqd/009:10:190
7269995929,4cyclictest9-21ksoftirqd/011:15:000
7269995929,3cyclictest9-21ksoftirqd/007:40:230
7269995928,6cyclictest9-21ksoftirqd/008:30:250
7269995926,6cyclictest9-21ksoftirqd/008:20:110
7269995926,6cyclictest9-21ksoftirqd/008:20:100
7269995926,4cyclictest9-21ksoftirqd/009:00:010
7269995921,9cyclictest9-21ksoftirqd/011:15:270
7269995921,9cyclictest9-21ksoftirqd/011:15:260
308162590,4sleep233-21ksoftirqd/209:05:162
7271995813,9cyclictest3003-21diskstats11:30:152
7271995812,16cyclictest7949-21tune2fs09:25:142
7271995811,10cyclictest26026-21cut08:55:182
7271995810,16cyclictest7349-21egrep07:10:122
7271995810,16cyclictest15077-21taskset07:25:192
7269995830,7cyclictest9-21ksoftirqd/007:20:000
7269995827,6cyclictest9-21ksoftirqd/008:35:190
7269995827,6cyclictest9-21ksoftirqd/008:05:000
7269995827,5cyclictest9-21ksoftirqd/008:25:250
7269995827,4cyclictest9-21ksoftirqd/010:30:190
7269995827,4cyclictest9-21ksoftirqd/009:50:140
7269995824,6cyclictest9-21ksoftirqd/009:00:270
7269995823,4cyclictest9-21ksoftirqd/007:45:250
7269995822,4cyclictest9-21ksoftirqd/010:40:270
7269995820,4cyclictest9-21ksoftirqd/008:15:240
727199578,8cyclictest0-21swapper/210:25:232
727199578,16cyclictest0-21swapper/210:35:292
727199578,10cyclictest0-21swapper/212:05:222
7271995711,15cyclictest13879-21sshd07:21:172
7271995710,16cyclictest31136-21latency_hist12:30:012
7269995728,9cyclictest9-21ksoftirqd/009:45:140
7269995727,3cyclictest9-21ksoftirqd/010:45:270
7269995726,6cyclictest9-21ksoftirqd/008:05:120
7269995725,5cyclictest9-21ksoftirqd/012:25:000
7269995723,4cyclictest9-21ksoftirqd/009:55:160
7269995722,4cyclictest9-21ksoftirqd/007:20:130
7269995721,4cyclictest9-21ksoftirqd/012:00:140
7269995721,4cyclictest9-21ksoftirqd/007:25:230
36422570,2sleep10-21swapper/112:40:011
727199569,8cyclictest0-21swapper/209:15:262
7271995613,9cyclictest14585-21mailstats08:30:252
7271995613,8cyclictest30522-21switchtime10:10:242
7271995612,16cyclictest32144-21cut12:30:192
7271995611,15cyclictest24605-21fschecks_time07:45:162
7269995628,3cyclictest9-21ksoftirqd/011:30:150
7269995625,4cyclictest9-21ksoftirqd/010:28:180
7269995623,4cyclictest9-21ksoftirqd/012:35:290
7269995623,4cyclictest9-21ksoftirqd/009:20:250
7269995623,4cyclictest9-21ksoftirqd/009:20:250
7269995622,3cyclictest9-21ksoftirqd/009:15:230
7269995621,4cyclictest9-21ksoftirqd/011:50:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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