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2026-08-16 - 06:54
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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 Sun Aug 16, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491226159,22phc2sys0-21swapper/319:09:473
229302205172,22sleep00-21swapper/019:05:280
229312203171,21sleep10-21swapper/119:05:301
230372202171,21sleep20-21swapper/219:06:432
821821650,6sleep22358299cyclictest20:50:252
232892161124,13sleep10-21swapper/119:10:011
139391800,2ptp4l391rcuc/322:55:183
16082700,5sleep01605-21latency_hist20:40:010
23581996722,7cyclictest25-21ksoftirqd/119:25:001
2358399660,3cyclictest4926-21chrt21:53:243
23581996123,4cyclictest25-21ksoftirqd/119:28:381
166202610,2sleep20-21swapper/221:10:162
23581996023,3cyclictest25-21ksoftirqd/121:05:581
23580996030,7cyclictest9-21ksoftirqd/019:25:160
23580996028,3cyclictest9-21ksoftirqd/020:50:110
23581995920,7cyclictest25-21ksoftirqd/119:18:521
23580995926,4cyclictest9-21ksoftirqd/022:50:160
23581995722,10cyclictest25-21ksoftirqd/120:45:241
23581995721,7cyclictest25-21ksoftirqd/122:38:051
23581995721,4cyclictest25-21ksoftirqd/122:25:291
23581995721,3cyclictest25-21ksoftirqd/100:19:471
23580995730,4cyclictest9-21ksoftirqd/022:35:220
23581995622,3cyclictest25-21ksoftirqd/120:14:161
23581995621,4cyclictest25-21ksoftirqd/100:12:571
23580995630,3cyclictest9-21ksoftirqd/022:40:230
23580995626,9cyclictest9-21ksoftirqd/021:05:200
23580995626,3cyclictest9-21ksoftirqd/020:10:220
23580995623,3cyclictest9-21ksoftirqd/019:20:170
23580995622,11cyclictest9-21ksoftirqd/020:59:590
23581995522,4cyclictest25-21ksoftirqd/100:36:331
23581995520,6cyclictest25-21ksoftirqd/100:21:111
23580995520,6cyclictest9-21ksoftirqd/021:04:590
23581995415,5cyclictest25-21ksoftirqd/122:54:591
23580995428,4cyclictest9-21ksoftirqd/000:35:030
23580995426,4cyclictest9-21ksoftirqd/000:00:190
23580995425,4cyclictest9-21ksoftirqd/023:55:240
23580995425,4cyclictest9-21ksoftirqd/000:20:260
23580995424,4cyclictest9-21ksoftirqd/022:45:170
23580995424,4cyclictest9-21ksoftirqd/021:10:240
23580995421,3cyclictest9-21ksoftirqd/021:20:200
23581995321,4cyclictest25-21ksoftirqd/120:37:381
23580995327,4cyclictest9-21ksoftirqd/021:25:260
23580995326,4cyclictest9-21ksoftirqd/019:55:260
23580995324,9cyclictest9-21ksoftirqd/023:10:200
23580995323,3cyclictest9-21ksoftirqd/000:30:150
23580995322,4cyclictest9-21ksoftirqd/000:25:170
23580995319,8cyclictest9-21ksoftirqd/000:08:330
2358199522,6cyclictest241ktimersoftd/123:25:161
23581995222,10cyclictest25-21ksoftirqd/100:00:231
23581995221,6cyclictest25-21ksoftirqd/121:48:311
2358099522,9cyclictest9-21ksoftirqd/000:20:010
23580995217,4cyclictest9-21ksoftirqd/022:05:200
2358099513,3cyclictest9-21ksoftirqd/022:00:000
23580995124,4cyclictest9-21ksoftirqd/019:15:180
23580995123,3cyclictest9-21ksoftirqd/020:30:200
23580995121,4cyclictest9-21ksoftirqd/022:10:260
23580995121,3cyclictest9-21ksoftirqd/021:30:130
139391510,39ptp4l0-21swapper/319:10:013
2358199508,6cyclictest25-21ksoftirqd/120:56:051
23581994912,8cyclictest25-21ksoftirqd/121:30:221
2358099493,3cyclictest9-21ksoftirqd/019:10:160
23580994924,3cyclictest9-21ksoftirqd/021:15:280
2358099492,3cyclictest121rcu_preempt23:40:010
23580994922,3cyclictest9-21ksoftirqd/022:30:260
23580994921,4cyclictest9-21ksoftirqd/022:20:000
23580994920,3cyclictest9-21ksoftirqd/023:45:010
23580994918,4cyclictest9-21ksoftirqd/022:00:230
23581994820,9cyclictest25-21ksoftirqd/121:20:121
23581994818,6cyclictest25-21ksoftirqd/122:45:291
2358199481,7cyclictest25-21ksoftirqd/123:05:201
2358199480,8cyclictest241ktimersoftd/119:55:241
2358199477,5cyclictest25-21ksoftirqd/123:17:491
2358199472,6cyclictest241ktimersoftd/120:15:171
2358099473,3cyclictest9-21ksoftirqd/023:50:250
23580994720,4cyclictest9-21ksoftirqd/023:20:150
23580994719,3cyclictest9-21ksoftirqd/020:45:160
23580994719,3cyclictest9-21ksoftirqd/019:45:200
23580994717,3cyclictest9-21ksoftirqd/021:45:270
23580994714,11cyclictest9-21ksoftirqd/019:40:170
2358199467,5cyclictest25-21ksoftirqd/119:36:341
2358199465,9cyclictest25-21ksoftirqd/121:25:251
2358199464,7cyclictest25-21ksoftirqd/121:56:581
2358199461,6cyclictest241ktimersoftd/122:05:271
23581994610,6cyclictest25-21ksoftirqd/122:43:591
2358199460,6cyclictest241ktimersoftd/122:15:011
2358199460,6cyclictest241ktimersoftd/120:34:591
2358199460,5cyclictest241ktimersoftd/120:25:001
2358099464,3cyclictest9-21ksoftirqd/019:35:250
23580994630,3cyclictest9-21ksoftirqd/023:30:290
2358099462,3cyclictest121rcu_preempt23:20:010
23580994613,11cyclictest9-21ksoftirqd/020:25:170
2358099460,3cyclictest121rcu_preempt20:20:230
23582994521,17cyclictest33-21ksoftirqd/221:05:002
23581994519,8cyclictest25-21ksoftirqd/123:50:281
2358199450,5cyclictest241ktimersoftd/121:40:181
2358099454,4cyclictest9-21ksoftirqd/021:45:010
23580994531,11cyclictest9-21ksoftirqd/019:50:230
23580994528,9cyclictest9-21ksoftirqd/023:05:000
2358099451,5cyclictest9-21ksoftirqd/023:05:220
2358099451,2cyclictest121rcu_preempt19:30:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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