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2025-12-29 - 02:37
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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 rackdslot1.osadl.org (updated Sun Dec 28, 2025 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1216521460,5sleep22760399cyclictest07:45:142
812621410,6sleep12760299cyclictest12:15:001
27601996531,3cyclictest9-21ksoftirqd/010:08:270
27601996432,4cyclictest9-21ksoftirqd/011:15:280
27601996431,6cyclictest9-21ksoftirqd/008:05:170
27601996334,6cyclictest9-21ksoftirqd/009:35:150
27601996333,7cyclictest9-21ksoftirqd/007:20:390
134491620,5ptp4l0-21swapper/108:00:201
2760399617,6cyclictest0-21swapper/211:35:262
2760399617,6cyclictest0-21swapper/211:35:262
27601996128,6cyclictest9-21ksoftirqd/011:25:280
2760399606,6cyclictest30028-21apt-config07:15:002
27601996031,4cyclictest9-21ksoftirqd/010:04:340
27601996030,4cyclictest9-21ksoftirqd/009:50:150
27601996029,6cyclictest9-21ksoftirqd/007:49:260
27601996029,5cyclictest9-21ksoftirqd/009:00:000
27601996028,6cyclictest9-21ksoftirqd/010:18:260
27601996027,5cyclictest9-21ksoftirqd/009:20:140
27601996024,6cyclictest9-21ksoftirqd/009:55:280
27601996023,6cyclictest9-21ksoftirqd/012:10:260
27601996022,10cyclictest9-21ksoftirqd/009:15:000
134491600,3ptp4l12984-21ls08:55:181
2760399595,52cyclictest0-21swapper/210:20:292
27601995931,9cyclictest9-21ksoftirqd/008:10:150
27601995930,8cyclictest9-21ksoftirqd/008:45:190
27601995930,3cyclictest9-21ksoftirqd/010:20:190
27601995929,6cyclictest9-21ksoftirqd/010:45:280
27601995925,6cyclictest9-21ksoftirqd/010:25:230
27601995922,5cyclictest9-21ksoftirqd/009:30:230
27601995921,5cyclictest9-21ksoftirqd/009:00:170
134491590,4ptp4l0-21swapper/212:06:252
2760399588,6cyclictest0-21swapper/210:05:222
2760399585,7cyclictest13153-21grep12:25:162
2760399584,6cyclictest4570-21awk07:30:002
2760399580,17cyclictest2318-21gnome-shell08:50:242
27601995830,4cyclictest9-21ksoftirqd/010:10:180
27601995829,7cyclictest9-21ksoftirqd/010:35:160
27601995829,7cyclictest9-21ksoftirqd/010:35:160
27601995827,5cyclictest9-21ksoftirqd/011:10:000
27601995827,5cyclictest9-21ksoftirqd/011:10:000
27601995826,3cyclictest9-21ksoftirqd/008:25:000
27601995821,6cyclictest9-21ksoftirqd/008:50:170
2760399578,12cyclictest0-21swapper/207:30:272
2760399578,10cyclictest0-21swapper/211:30:162
27601995729,5cyclictest9-21ksoftirqd/012:00:170
27601995728,6cyclictest9-21ksoftirqd/011:40:170
27601995726,4cyclictest9-21ksoftirqd/008:28:180
27601995726,3cyclictest9-21ksoftirqd/009:05:190
27601995724,6cyclictest9-21ksoftirqd/009:15:140
134491570,5ptp4l0-21swapper/011:55:160
134491570,3ptp4l0-21swapper/208:39:262
134491570,3ptp4l0-21swapper/111:18:351
2760399568,5cyclictest0-21swapper/209:25:262
27601995629,3cyclictest9-21ksoftirqd/010:40:560
27601995628,7cyclictest9-21ksoftirqd/008:30:200
27601995628,6cyclictest9-21ksoftirqd/012:25:210
27601995627,4cyclictest9-21ksoftirqd/007:32:250
27601995626,6cyclictest9-21ksoftirqd/007:15:140
27601995624,7cyclictest9-21ksoftirqd/008:00:230
27601995624,3cyclictest9-21ksoftirqd/012:21:180
27601995624,3cyclictest9-21ksoftirqd/011:25:000
27601995622,3cyclictest9-21ksoftirqd/008:36:070
27601995618,6cyclictest9-21ksoftirqd/008:15:180
27601995618,6cyclictest9-21ksoftirqd/008:15:180
134491560,5ptp4l0-21swapper/112:00:231
134491560,4ptp4l0-21swapper/007:25:140
2760399558,6cyclictest0-21swapper/210:10:202
2760399557,7cyclictest0-21swapper/212:15:192
2760399557,7cyclictest0-21swapper/207:15:232
2760399557,6cyclictest0-21swapper/212:10:262
2760399557,6cyclictest0-21swapper/209:00:192
2760399557,12cyclictest0-21swapper/209:30:262
27601995527,6cyclictest9-21ksoftirqd/012:35:200
27601995526,6cyclictest9-21ksoftirqd/010:30:280
27601995521,5cyclictest9-21ksoftirqd/008:40:200
27601995519,5cyclictest9-21ksoftirqd/009:40:270
2760399548,10cyclictest0-21swapper/210:25:162
2760399547,6cyclictest0-21swapper/209:59:242
2760399547,6cyclictest0-21swapper/207:55:232
2760399540,18cyclictest12049-21chrt08:55:112
134491540,3ptp4l0-21swapper/211:15:242
134491540,3ptp4l0-21swapper/109:34:181
134491540,3ptp4l0-21swapper/109:25:271
2760399537,6cyclictest0-21swapper/210:45:252
2760399537,6cyclictest0-21swapper/209:15:232
2760399537,12cyclictest0-21swapper/212:00:282
2760399536,11cyclictest0-21swapper/209:45:222
2760399531,6cyclictest8393-21cstates11:05:162
2760399531,6cyclictest8393-21cstates11:05:162
27601995328,7cyclictest9-21ksoftirqd/009:45:130
27601995318,5cyclictest9-21ksoftirqd/012:05:210
134491530,4ptp4l0-21swapper/207:09:352
134491530,4ptp4l0-21swapper/111:44:071
134491530,4ptp4l0-21swapper/011:00:160
134491530,3ptp4l0-21swapper/110:40:171
2760399527,6cyclictest0-21swapper/209:54:552
2760399522,6cyclictest0-21swapper/207:22:072
2760399520,11cyclictest24669-21cpuspeed_turbos11:40:132
27601995226,6cyclictest9-21ksoftirqd/010:50:270
27601995224,6cyclictest9-21ksoftirqd/010:55:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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