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2026-05-11 - 14:49
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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 Mon May 11, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
181652229199,20sleep30-21swapper/319:09:373
179052216149,22sleep20-21swapper/219:06:222
179402202169,22sleep10-21swapper/119:06:421
181292201167,22sleep00-21swapper/019:09:090
846021800,4sleep21849199cyclictest22:05:142
1819628161,11sleep30-21swapper/319:10:023
18489996327,4cyclictest9-21ksoftirqd/022:25:250
1849199620,4cyclictest25475-21grep22:40:122
1849199620,3cyclictest515-21/usr/sbin/munin21:50:292
18489996130,4cyclictest9-21ksoftirqd/021:40:190
18489996129,4cyclictest9-21ksoftirqd/021:10:010
18489996129,4cyclictest9-21ksoftirqd/019:40:270
18489996128,4cyclictest9-21ksoftirqd/020:20:140
18489996125,4cyclictest9-21ksoftirqd/020:00:180
18489996027,4cyclictest9-21ksoftirqd/021:55:180
18489996027,11cyclictest9-21ksoftirqd/000:10:130
18489996026,4cyclictest9-21ksoftirqd/022:10:010
18489996023,4cyclictest9-21ksoftirqd/019:25:250
138491600,1ptp4l401ktimersoftd/319:17:093
1849199590,3cyclictest8080-21/usr/sbin/munin21:00:192
18489995930,9cyclictest9-21ksoftirqd/000:05:190
18489995928,4cyclictest9-21ksoftirqd/019:35:240
18489995928,4cyclictest9-21ksoftirqd/000:00:130
18489995926,10cyclictest9-21ksoftirqd/022:20:280
18489995925,5cyclictest9-21ksoftirqd/000:25:260
18489995924,4cyclictest9-21ksoftirqd/019:45:100
18489995828,4cyclictest9-21ksoftirqd/020:50:230
18489995827,3cyclictest9-21ksoftirqd/000:15:140
18489995825,4cyclictest9-21ksoftirqd/020:55:120
18489995726,11cyclictest9-21ksoftirqd/022:05:010
18489995720,11cyclictest9-21ksoftirqd/022:35:250
113362570,2sleep211337-21irqrtprio21:05:202
18489995626,4cyclictest9-21ksoftirqd/019:25:000
18489995625,4cyclictest9-21ksoftirqd/021:30:140
1849199550,30cyclictest0-21swapper/223:33:362
1849099559,6cyclictest25-21ksoftirqd/121:50:001
18490995514,5cyclictest25-21ksoftirqd/122:50:011
18490995514,5cyclictest25-21ksoftirqd/122:50:011
18489995527,8cyclictest9-21ksoftirqd/023:00:280
18489995526,4cyclictest9-21ksoftirqd/021:15:150
18489995523,3cyclictest9-21ksoftirqd/020:15:260
18489995522,5cyclictest9-21ksoftirqd/021:55:000
185872540,2sleep20-21swapper/200:35:122
18490995414,6cyclictest25-21ksoftirqd/119:15:191
1848999545,8cyclictest9-21ksoftirqd/022:50:240
1848999545,8cyclictest9-21ksoftirqd/022:50:240
1848999543,8cyclictest9-21ksoftirqd/020:50:000
18489995429,9cyclictest9-21ksoftirqd/023:10:240
18489995428,4cyclictest9-21ksoftirqd/020:05:170
18489995422,4cyclictest9-21ksoftirqd/022:55:130
18489995419,8cyclictest9-21ksoftirqd/020:35:010
138491540,1ptp4l391rcuc/323:22:483
138491540,1ptp4l391rcuc/323:22:483
1849099538,5cyclictest25-21ksoftirqd/123:55:121
18489995318,10cyclictest9-21ksoftirqd/019:10:200
1849099528,7cyclictest25-21ksoftirqd/100:08:061
1849099526,7cyclictest8234-21grep21:00:121
1849099525,7cyclictest29786-21/usr/sbin/munin21:40:271
1848999526,9cyclictest9-21ksoftirqd/023:55:150
1848999522,10cyclictest9-21ksoftirqd/022:45:000
138491520,1ptp4l401ktimersoftd/319:59:513
18490995119,9cyclictest25-21ksoftirqd/123:54:141
18490995119,9cyclictest25-21ksoftirqd/123:54:141
18490995114,5cyclictest25-21ksoftirqd/100:00:271
18490995112,7cyclictest25-21ksoftirqd/121:50:191
1848999516,7cyclictest9-21ksoftirqd/023:25:120
1848999515,9cyclictest9-21ksoftirqd/023:25:000
1848999515,9cyclictest9-21ksoftirqd/023:25:000
1848999515,4cyclictest9-21ksoftirqd/020:25:250
1848999513,5cyclictest9-21ksoftirqd/022:10:230
18489995122,8cyclictest9-21ksoftirqd/021:45:180
1848999511,9cyclictest9-21ksoftirqd/023:40:010
1848999511,9cyclictest9-21ksoftirqd/021:25:010
18491995011,23cyclictest9098-21idleruntime00:15:172
1849099506,6cyclictest28092-21tr22:45:121
1848999503,9cyclictest9-21ksoftirqd/019:35:010
1848999502,10cyclictest9-21ksoftirqd/021:05:270
1849099495,7cyclictest4283-21irqrtprio19:45:171
18490994920,3cyclictest25-21ksoftirqd/122:25:241
18490994911,4cyclictest25-21ksoftirqd/123:05:011
1848999496,3cyclictest9-21ksoftirqd/020:10:140
1848999495,9cyclictest21835-21phc2sys22:30:230
18489994936,3cyclictest9-21ksoftirqd/021:25:130
1848999491,9cyclictest9-21ksoftirqd/022:20:000
1848999491,9cyclictest9-21ksoftirqd/022:20:000
1848999491,9cyclictest9-21ksoftirqd/021:00:210
1848999491,6cyclictest9-21ksoftirqd/000:20:120
25882480,2sleep30-21swapper/319:40:243
1849099489,6cyclictest25-21ksoftirqd/119:24:581
1849099483,7cyclictest733-21sed19:40:001
1849099483,7cyclictest0-21swapper/119:55:271
1848999487,7cyclictest9-21ksoftirqd/021:35:140
1848999485,8cyclictest9-21ksoftirqd/023:45:230
1848999485,10cyclictest9-21ksoftirqd/023:05:260
1848999482,6cyclictest9-21ksoftirqd/023:30:190
1849099478,5cyclictest25-21ksoftirqd/120:40:161
1849099476,5cyclictest25-21ksoftirqd/120:05:271
1849099475,7cyclictest20765-21cat23:35:011
1849099475,6cyclictest25-21ksoftirqd/121:25:161
1849099475,6cyclictest25-21ksoftirqd/100:25:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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