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2026-08-18 - 09:01
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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 Aug 18, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491204170,23phc2sys0-21swapper/319:05:113
275562203169,22sleep20-21swapper/219:06:112
278512202170,21sleep10-21swapper/119:09:561
275592201168,22sleep00-21swapper/019:06:130
1393911290,0ptp4l391rcuc/323:00:193
139391890,1ptp4l17777-21cat22:10:143
57898640,51rtkit-daemon0-21swapper/019:10:010
139391610,1ptp4l401ktimersoftd/321:08:183
177342590,2sleep02815199cyclictest21:00:290
165252570,5sleep2311rcuc/200:20:262
139391540,1ptp4l401ktimersoftd/320:53:423
139391530,0ptp4l401ktimersoftd/321:22:133
28152995223,4cyclictest25-21ksoftirqd/121:35:211
2815199527,3cyclictest9-21ksoftirqd/020:48:180
2815199527,3cyclictest9-21ksoftirqd/020:48:180
28152995122,3cyclictest25-21ksoftirqd/123:00:271
28152995020,4cyclictest25-21ksoftirqd/122:55:211
28154994925,15cyclictest41-21ksoftirqd/300:00:153
28152994919,3cyclictest25-21ksoftirqd/121:25:261
28152994919,3cyclictest25-21ksoftirqd/121:25:261
134391490,4getstats2815499cyclictest23:13:503
134391490,4getstats2815499cyclictest23:13:503
28152994820,3cyclictest25-21ksoftirqd/123:10:241
28152994820,3cyclictest25-21ksoftirqd/123:10:241
28151994817,2cyclictest121rcu_preempt00:35:140
28152994717,8cyclictest25-21ksoftirqd/122:35:011
2815199477,2cyclictest9-21ksoftirqd/020:20:230
2815199474,3cyclictest9-21ksoftirqd/020:25:210
28151994713,8cyclictest9-21ksoftirqd/000:15:010
28152994616,4cyclictest25-21ksoftirqd/120:25:161
28152994513,3cyclictest21480-21irqrtprio23:25:201
2815299450,3cyclictest29082-21latency_hist22:35:011
2815199455,7cyclictest9-21ksoftirqd/000:00:210
28151994538,4cyclictest20753-21sh21:10:000
28151994421,4cyclictest9-21ksoftirqd/023:20:270
139391440,0ptp4l401ktimersoftd/323:46:543
139391440,0ptp4l401ktimersoftd/320:13:403
2815199433,7cyclictest9-21ksoftirqd/019:25:250
2815199431,7cyclictest9-21ksoftirqd/022:25:200
28151994311,6cyclictest9-21ksoftirqd/020:15:230
139391430,0ptp4l401ktimersoftd/300:20:153
28154994229,6cyclictest41-21ksoftirqd/300:30:273
28154994227,4cyclictest41-21ksoftirqd/319:30:183
28154994224,8cyclictest41-21ksoftirqd/323:20:273
28152994237,3cyclictest25-21ksoftirqd/122:15:001
28152994211,3cyclictest25-21ksoftirqd/120:45:001
2815199428,10cyclictest9-21ksoftirqd/021:55:190
2815199424,4cyclictest9-21ksoftirqd/019:35:240
28151994237,3cyclictest22845-21grep23:30:010
2815199420,8cyclictest9-21ksoftirqd/020:50:210
2815499410,9cyclictest1300-21snmpd21:40:213
28152994110,4cyclictest25-21ksoftirqd/100:25:241
2815199414,9cyclictest9-21ksoftirqd/023:00:220
2815199414,7cyclictest9-21ksoftirqd/021:14:440
2815199412,3cyclictest9-21ksoftirqd/023:55:140
2815199410,4cyclictest9-21ksoftirqd/020:43:350
139391410,0ptp4l401ktimersoftd/322:40:293
28152994026,3cyclictest25-21ksoftirqd/123:50:001
28152994025,6cyclictest25-21ksoftirqd/122:45:151
28152994025,6cyclictest25-21ksoftirqd/121:20:241
28152994025,6cyclictest25-21ksoftirqd/100:35:211
28152994024,6cyclictest25-21ksoftirqd/120:00:251
2815199405,3cyclictest121rcu_preempt19:40:270
2815199404,3cyclictest121rcu_preempt20:00:240
2815199404,3cyclictest121rcu_preempt19:30:130
28151994010,3cyclictest121rcu_preempt00:10:230
139391400,0ptp4l401ktimersoftd/300:25:323
28152993925,4cyclictest25-21ksoftirqd/123:50:131
28152993924,4cyclictest25-21ksoftirqd/123:20:151
28152993923,6cyclictest25-21ksoftirqd/119:55:171
2815199397,3cyclictest9-21ksoftirqd/023:17:320
2815199395,3cyclictest121rcu_preempt19:45:110
2815199394,2cyclictest9-21ksoftirqd/020:55:150
28151993922,6cyclictest9-21ksoftirqd/022:45:160
2815199391,8cyclictest9-21ksoftirqd/022:15:190
2815199391,11cyclictest9-21ksoftirqd/021:45:170
28154993835,2cyclictest41-21ksoftirqd/320:10:003
28154993833,3cyclictest41-21ksoftirqd/300:35:193
28152993826,4cyclictest25-21ksoftirqd/122:50:181
28152993825,5cyclictest25-21ksoftirqd/122:40:271
28152993824,4cyclictest25-21ksoftirqd/123:40:121
28152993824,3cyclictest25-21ksoftirqd/122:05:231
28152993824,3cyclictest25-21ksoftirqd/122:05:221
28152993823,6cyclictest25-21ksoftirqd/121:50:241
28152993823,6cyclictest25-21ksoftirqd/100:10:271
28152993823,4cyclictest25-21ksoftirqd/120:05:141
28152993822,3cyclictest25-21ksoftirqd/121:30:191
2815199387,4cyclictest9-21ksoftirqd/021:40:200
2815199383,7cyclictest121rcu_preempt00:30:240
28151993833,3cyclictest9-21ksoftirqd/020:34:590
2815199380,10cyclictest9-21ksoftirqd/023:45:130
28154993732,3cyclictest41-21ksoftirqd/322:10:013
28154993732,3cyclictest41-21ksoftirqd/322:10:003
28154993731,4cyclictest41-21ksoftirqd/321:14:083
28154993722,4cyclictest41-21ksoftirqd/323:50:243
28153993732,3cyclictest33-21ksoftirqd/220:50:172
28152993733,2cyclictest25-21ksoftirqd/123:35:001
28152993732,3cyclictest25-21ksoftirqd/122:15:181
28152993732,3cyclictest25-21ksoftirqd/120:35:191
28152993732,2cyclictest25-21ksoftirqd/119:30:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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