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2026-07-22 - 12:02
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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 rackdslot4.osadl.org (updated Wed Jul 22, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
118002205172,22sleep10-21swapper/119:07:271
138591203169,23phc2sys0-21swapper/319:09:043
117072203170,22sleep00-21swapper/019:06:170
118012200168,21sleep20-21swapper/219:07:282
138491670,1ptp4l401ktimersoftd/323:27:123
138491670,1ptp4l401ktimersoftd/323:00:313
138491600,1ptp4l401ktimersoftd/300:10:203
138491600,1ptp4l401ktimersoftd/300:10:203
12288995620,10cyclictest25-21ksoftirqd/121:35:011
163722550,2sleep30-21swapper/322:30:283
12288995424,4cyclictest25-21ksoftirqd/100:05:181
12288995418,8cyclictest25-21ksoftirqd/119:50:001
138491530,1ptp4l391rcuc/321:17:223
138491520,1ptp4l401ktimersoftd/322:41:413
12288995217,7cyclictest25-21ksoftirqd/121:00:001
132042510,3sleep09-21ksoftirqd/000:35:170
1228999511,17cyclictest2315-21gnome-shell19:55:252
12288995023,7cyclictest25-21ksoftirqd/121:55:211
12288995022,7cyclictest25-21ksoftirqd/120:19:591
12288995021,7cyclictest25-21ksoftirqd/123:35:001
12288995018,8cyclictest25-21ksoftirqd/123:20:191
12288994923,7cyclictest25-21ksoftirqd/120:50:121
12288994922,3cyclictest25-21ksoftirqd/100:35:241
12288994918,8cyclictest25-21ksoftirqd/122:40:121
12288994914,4cyclictest25-21ksoftirqd/123:40:141
12288994913,4cyclictest25-21ksoftirqd/121:20:001
138491480,1ptp4l401ktimersoftd/319:33:183
12288994822,4cyclictest25-21ksoftirqd/122:30:131
12288994820,4cyclictest25-21ksoftirqd/100:10:011
12288994820,4cyclictest25-21ksoftirqd/100:10:011
1228999470,10cyclictest397-21/usr/sbin/munin20:55:172
1228899478,7cyclictest25-21ksoftirqd/120:25:241
12288994719,8cyclictest25-21ksoftirqd/120:45:181
12288994714,8cyclictest25-21ksoftirqd/119:10:251
1228999465,6cyclictest16253-21systemctl22:30:252
1228899468,6cyclictest25-21ksoftirqd/121:45:161
12288994621,7cyclictest25-21ksoftirqd/119:50:221
12288994617,8cyclictest25-21ksoftirqd/119:40:181
12288994613,8cyclictest25-21ksoftirqd/122:50:001
12288994613,4cyclictest25-21ksoftirqd/119:15:351
1228899457,8cyclictest25-21ksoftirqd/122:20:221
12288994520,6cyclictest25-21ksoftirqd/122:25:161
12288994519,7cyclictest25-21ksoftirqd/119:35:131
12288994518,7cyclictest25-21ksoftirqd/120:45:001
12288994517,4cyclictest25-21ksoftirqd/122:05:171
12288994516,7cyclictest25-21ksoftirqd/121:35:171
12288994516,4cyclictest25-21ksoftirqd/120:05:261
12288994515,6cyclictest25-21ksoftirqd/123:10:151
12288994515,4cyclictest25-21ksoftirqd/121:40:171
12288994514,8cyclictest25-21ksoftirqd/100:00:221
12288994513,8cyclictest25-21ksoftirqd/123:05:141
12288994512,9cyclictest25-21ksoftirqd/122:10:141
12288994512,4cyclictest25-21ksoftirqd/119:30:271
12288994511,8cyclictest25-21ksoftirqd/100:20:201
12288994435,3cyclictest25-21ksoftirqd/100:20:001
12288994416,8cyclictest25-21ksoftirqd/123:55:161
12288994413,4cyclictest25-21ksoftirqd/120:00:281
12288994411,4cyclictest25-21ksoftirqd/122:55:221
1228899439,10cyclictest25-21ksoftirqd/121:05:161
1228899438,7cyclictest25-21ksoftirqd/121:00:231
1228899437,8cyclictest25-21ksoftirqd/121:50:171
12288994315,6cyclictest25-21ksoftirqd/122:35:281
12288994315,6cyclictest25-21ksoftirqd/122:35:281
12288994313,8cyclictest25-21ksoftirqd/120:35:251
12288994312,7cyclictest25-21ksoftirqd/123:00:151
12288994311,9cyclictest25-21ksoftirqd/121:10:231
12288994311,9cyclictest25-21ksoftirqd/121:10:221
12288994311,4cyclictest25-21ksoftirqd/119:20:261
12288994310,8cyclictest25-21ksoftirqd/121:25:201
12288994310,8cyclictest25-21ksoftirqd/119:55:141
1228899428,8cyclictest25-21ksoftirqd/120:20:171
12288994214,3cyclictest25-21ksoftirqd/122:50:181
12288994213,8cyclictest25-21ksoftirqd/123:25:141
12288994210,6cyclictest25-21ksoftirqd/122:20:021
12288994210,4cyclictest25-21ksoftirqd/120:10:141
138491410,34ptp4l0-21swapper/319:10:003
1228999415,8cyclictest9849-21apt-get22:20:112
12288994113,4cyclictest25-21ksoftirqd/100:25:151
12288994112,9cyclictest25-21ksoftirqd/120:30:151
12288994111,7cyclictest25-21ksoftirqd/123:15:161
12290994024,13cyclictest41-21ksoftirqd/300:35:323
1228899409,7cyclictest25-21ksoftirqd/123:50:151
1228899405,8cyclictest25-21ksoftirqd/123:45:181
1228899405,8cyclictest25-21ksoftirqd/121:20:281
12288994016,7cyclictest25-21ksoftirqd/122:00:231
12288994014,6cyclictest25-21ksoftirqd/123:35:151
1229099394,17cyclictest4579-21cat23:15:013
12289993934,3cyclictest1861-21cron23:10:002
1228899396,8cyclictest25-21ksoftirqd/119:25:201
1228899396,8cyclictest25-21ksoftirqd/119:25:201
12290993829,6cyclictest41-21ksoftirqd/321:50:113
12288993833,3cyclictest25-21ksoftirqd/100:30:141
12289993730,4cyclictest33-21ksoftirqd/200:00:322
138491360,0ptp4l401ktimersoftd/320:45:143
12290993630,4cyclictest41-21ksoftirqd/320:31:413
12290993629,4cyclictest41-21ksoftirqd/323:20:063
12289993630,4cyclictest33-21ksoftirqd/222:19:192
12289993628,5cyclictest33-21ksoftirqd/223:19:002
12289993627,3cyclictest33-21ksoftirqd/219:30:542
1228999360,8cyclictest321ktimersoftd/200:15:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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