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2025-10-13 - 18:43
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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 rackdslot2.osadl.org (updated Mon Oct 13, 2025 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137391235168,22phc2sys0-21swapper/307:06:143
321182229167,50sleep00-21swapper/007:07:010
320902207172,23sleep20-21swapper/207:06:402
322592206172,22sleep10-21swapper/107:08:521
814021610,6sleep23264199cyclictest11:55:112
110621480,4sleep10-21swapper/111:40:181
1348321410,5sleep33264299cyclictest12:05:203
32642996635,7cyclictest41-21ksoftirqd/310:40:013
32642996530,7cyclictest41-21ksoftirqd/307:25:003
157212630,2sleep10-21swapper/112:10:201
1373916150,4phc2sys0-21swapper/307:10:013
32642995930,4cyclictest41-21ksoftirqd/308:30:223
32642995929,7cyclictest41-21ksoftirqd/312:35:003
32642995828,8cyclictest41-21ksoftirqd/312:35:003
32642995823,4cyclictest41-21ksoftirqd/309:10:013
32642995728,4cyclictest41-21ksoftirqd/307:30:143
32642995726,4cyclictest41-21ksoftirqd/307:45:003
32642995626,3cyclictest41-21ksoftirqd/312:10:153
32642995623,7cyclictest41-21ksoftirqd/312:15:233
245022560,2sleep00-21swapper/012:30:000
32642995528,7cyclictest41-21ksoftirqd/311:10:273
32642995525,4cyclictest41-21ksoftirqd/309:20:203
32642995524,7cyclictest41-21ksoftirqd/312:20:013
32642995514,4cyclictest41-21ksoftirqd/311:05:143
32642995427,4cyclictest41-21ksoftirqd/310:55:153
32642995427,4cyclictest41-21ksoftirqd/309:40:233
32642995426,7cyclictest41-21ksoftirqd/312:25:273
32642995425,7cyclictest41-21ksoftirqd/311:35:003
32642995425,4cyclictest41-21ksoftirqd/308:00:203
32642995420,8cyclictest41-21ksoftirqd/310:35:013
32642995420,8cyclictest41-21ksoftirqd/310:35:013
32642995322,8cyclictest41-21ksoftirqd/310:55:003
18252530,1sleep30-21swapper/308:20:183
32642995226,7cyclictest41-21ksoftirqd/307:15:143
32642995224,4cyclictest41-21ksoftirqd/310:20:243
32642995224,4cyclictest41-21ksoftirqd/308:05:213
32642995222,8cyclictest41-21ksoftirqd/310:40:193
32642995221,7cyclictest41-21ksoftirqd/309:15:003
32642995220,4cyclictest41-21ksoftirqd/308:15:173
32642995127,4cyclictest41-21ksoftirqd/308:45:213
32642995126,7cyclictest41-21ksoftirqd/307:45:203
32642995125,4cyclictest41-21ksoftirqd/311:00:213
32642995125,4cyclictest41-21ksoftirqd/311:00:213
32642995124,7cyclictest41-21ksoftirqd/310:10:193
32642995124,6cyclictest41-21ksoftirqd/309:05:013
32642995122,8cyclictest41-21ksoftirqd/307:25:213
32642995120,4cyclictest41-21ksoftirqd/309:55:003
32642995026,7cyclictest41-21ksoftirqd/308:50:203
32642995024,7cyclictest41-21ksoftirqd/308:40:133
32642995020,4cyclictest41-21ksoftirqd/311:30:003
32642995020,3cyclictest41-21ksoftirqd/311:20:013
32642995019,4cyclictest41-21ksoftirqd/311:45:143
32642995018,3cyclictest41-21ksoftirqd/309:57:463
32642995018,3cyclictest41-21ksoftirqd/309:57:463
32642995017,7cyclictest41-21ksoftirqd/309:25:183
32642995014,4cyclictest41-21ksoftirqd/311:50:163
3264299495,3cyclictest41-21ksoftirqd/311:35:273
32642994921,7cyclictest41-21ksoftirqd/309:15:283
32642994824,7cyclictest41-21ksoftirqd/308:40:013
32642994814,7cyclictest41-21ksoftirqd/310:00:253
321692480,2sleep20-21swapper/208:15:192
32642994724,7cyclictest41-21ksoftirqd/309:30:173
32642994718,9cyclictest41-21ksoftirqd/309:35:173
32642994716,8cyclictest41-21ksoftirqd/311:55:223
32642994715,4cyclictest41-21ksoftirqd/307:35:153
32642994622,7cyclictest41-21ksoftirqd/310:15:223
32642994619,8cyclictest41-21ksoftirqd/311:20:163
32642994619,4cyclictest41-21ksoftirqd/307:55:263
32642994617,6cyclictest41-21ksoftirqd/309:00:013
32642994616,4cyclictest41-21ksoftirqd/308:25:193
3264299443,2cyclictest29990-21ps08:10:203
3264299440,3cyclictest41-21ksoftirqd/310:45:173
32642994319,6cyclictest41-21ksoftirqd/310:05:143
32642994313,9cyclictest41-21ksoftirqd/310:25:183
32642994310,7cyclictest41-21ksoftirqd/312:00:263
32642994213,7cyclictest41-21ksoftirqd/309:45:243
3264299414,2cyclictest41-21ksoftirqd/307:50:203
32641994135,4cyclictest35892irq/127-enp1s0-10:28:262
3264299401,3cyclictest41-21ksoftirqd/311:40:153
168332390,28sleep0101ktimersoftd/008:50:200
32641993833,3cyclictest33-21ksoftirqd/209:54:592
32639993733,2cyclictest9-21ksoftirqd/008:00:010
32639993732,3cyclictest9-21ksoftirqd/009:49:590
32639993732,3cyclictest9-21ksoftirqd/008:26:240
32641993630,4cyclictest33-21ksoftirqd/211:55:012
32640993630,4cyclictest25-21ksoftirqd/112:09:521
32640993630,4cyclictest25-21ksoftirqd/112:04:011
32640993630,4cyclictest25-21ksoftirqd/107:19:341
32639993631,3cyclictest9-21ksoftirqd/009:05:180
32639993631,3cyclictest9-21ksoftirqd/007:52:180
32641993531,3cyclictest33-21ksoftirqd/209:19:592
32641993531,2cyclictest33-21ksoftirqd/210:35:002
32641993531,2cyclictest33-21ksoftirqd/210:35:002
32641993530,3cyclictest33-21ksoftirqd/212:13:052
32641993530,3cyclictest33-21ksoftirqd/211:45:282
32641993530,3cyclictest33-21ksoftirqd/211:19:592
32641993530,3cyclictest33-21ksoftirqd/207:35:262
32641993530,3cyclictest33-21ksoftirqd/207:21:202
32641993529,4cyclictest33-21ksoftirqd/212:29:542
32641993529,4cyclictest33-21ksoftirqd/211:23:372
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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