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2026-08-22 - 20:33
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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 rackdslot1.osadl.org (updated Sat Aug 22, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14953996828,6cyclictest9-21ksoftirqd/012:05:000
14953996633,6cyclictest9-21ksoftirqd/009:30:190
14953996332,5cyclictest9-21ksoftirqd/009:20:180
14953996329,6cyclictest9-21ksoftirqd/009:40:280
14953996325,5cyclictest9-21ksoftirqd/012:10:250
14953996226,7cyclictest9-21ksoftirqd/011:00:160
188032610,4sleep20-21swapper/209:35:202
14953996136,6cyclictest9-21ksoftirqd/007:25:000
14953996132,3cyclictest9-21ksoftirqd/009:25:200
14953996130,5cyclictest9-21ksoftirqd/008:00:180
134491610,15ptp4l0-21swapper/308:40:163
14953996029,5cyclictest9-21ksoftirqd/012:25:200
14953996023,5cyclictest9-21ksoftirqd/009:00:010
14953996023,3cyclictest9-21ksoftirqd/009:55:160
134491600,3ptp4l32335-21diskstats11:15:172
14953995924,5cyclictest9-21ksoftirqd/011:50:160
14953995924,5cyclictest9-21ksoftirqd/007:40:210
14953995922,6cyclictest9-21ksoftirqd/009:50:250
134491590,4ptp4l0-21swapper/307:08:033
14953995827,10cyclictest9-21ksoftirqd/008:45:160
14953995818,4cyclictest9-21ksoftirqd/007:10:150
134491580,4ptp4l0-21swapper/310:20:153
134491580,4ptp4l0-21swapper/007:59:360
1495399578,3cyclictest9-21ksoftirqd/012:35:230
14953995727,4cyclictest9-21ksoftirqd/008:25:000
14953995721,6cyclictest9-21ksoftirqd/008:30:250
134491570,4ptp4l0-21swapper/108:35:201
134491570,3ptp4l0-21swapper/211:10:132
134491570,1ptp4l321ktimersoftd/210:32:192
14953995624,3cyclictest9-21ksoftirqd/007:35:260
14953995621,5cyclictest9-21ksoftirqd/007:15:270
14954995512,28cyclictest22482-21latency_hist12:05:001
1495399558,3cyclictest9-21ksoftirqd/011:05:210
1495399558,3cyclictest9-21ksoftirqd/011:05:210
1495399557,2cyclictest9-21ksoftirqd/012:30:220
1495399554,5cyclictest15461-21lockfile-create10:40:010
14953995523,4cyclictest9-21ksoftirqd/010:10:250
14953995523,4cyclictest9-21ksoftirqd/010:05:150
14953995522,6cyclictest9-21ksoftirqd/011:10:180
134491550,5ptp4l0-21swapper/108:34:301
134491550,4ptp4l0-21swapper/208:34:512
134491550,13ptp4l0-21swapper/207:57:222
1495399548,3cyclictest9-21ksoftirqd/009:00:160
1495399546,6cyclictest8670-21idleruntime-cro11:35:010
14953995420,5cyclictest9-21ksoftirqd/008:10:190
134491540,4ptp4l0-21swapper/312:09:493
134491540,4ptp4l0-21swapper/209:21:312
134491540,4ptp4l0-21swapper/008:17:050
134491540,3ptp4l0-21swapper/308:31:343
134491540,3ptp4l0-21swapper/211:49:082
134491540,3ptp4l0-21swapper/208:52:012
134491540,3ptp4l0-21swapper/011:17:450
134491540,3ptp4l0-21swapper/007:45:560
134491540,2ptp4l0-21swapper/209:18:442
134491540,24ptp4l25-21ksoftirqd/108:21:161
1495399536,5cyclictest24597-21cron11:00:010
14953995323,4cyclictest9-21ksoftirqd/007:25:140
14953995322,5cyclictest9-21ksoftirqd/011:40:210
134491530,4ptp4l0-21swapper/310:10:183
134491530,3ptp4l0-21swapper/107:44:461
134491530,2ptp4l121rcu_preempt12:11:053
1495399528,3cyclictest9-21ksoftirqd/012:05:200
1495399528,3cyclictest9-21ksoftirqd/007:30:130
134491520,6ptp4l33-21ksoftirqd/211:30:152
134491520,4ptp4l0-21swapper/211:21:562
113672520,6sleep30-21swapper/310:30:163
1495399518,3cyclictest9-21ksoftirqd/012:20:200
134491510,3ptp4l0-21swapper/208:08:552
134491510,10ptp4l13565-21memory07:05:191
1495399507,2cyclictest9-21ksoftirqd/011:55:280
1495399507,2cyclictest9-21ksoftirqd/008:05:260
1495399503,3cyclictest0-21swapper/010:45:280
134491500,3ptp4l0-21swapper/110:42:151
134491500,2ptp4l0-21swapper/208:00:432
1495399496,3cyclictest9-21ksoftirqd/007:50:270
1495399495,3cyclictest9-21ksoftirqd/011:25:170
1495399492,8cyclictest0-21swapper/010:25:180
14953994920,6cyclictest9-21ksoftirqd/011:45:240
1495399491,5cyclictest9-21ksoftirqd/010:40:200
134491490,8ptp4l14282-21users07:05:270
134491490,4ptp4l0-21swapper/208:10:552
1495399485,3cyclictest9-21ksoftirqd/008:35:270
1495399485,2cyclictest24843-21df_abs08:40:160
1495399484,6cyclictest0-21swapper/009:50:010
1495399482,6cyclictest0-21swapper/009:40:000
1495399482,5cyclictest9-21ksoftirqd/010:00:260
1495399482,2cyclictest0-21swapper/010:30:160
134491480,5ptp4l0-21swapper/211:35:122
134491480,4ptp4l0-21swapper/209:43:002
134491480,3ptp4l0-21swapper/209:25:242
1495399474,2cyclictest0-21swapper/010:15:160
1495399473,4cyclictest6642-21cpuspeed_turbos10:20:140
1495399471,5cyclictest9-21ksoftirqd/009:05:250
134491470,4ptp4l0-21swapper/310:56:243
134491470,4ptp4l0-21swapper/208:16:122
134491470,4ptp4l0-21swapper/207:34:422
134491470,4ptp4l0-21swapper/107:45:521
134491470,3ptp4l0-21swapper/211:56:002
134491470,3ptp4l0-21swapper/108:07:111
1495399466,3cyclictest9-21ksoftirqd/010:50:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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