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2025-12-10 - 17:54
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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 rackdslot1.osadl.org (updated Wed Dec 10, 2025 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1416321840,6sleep20-21swapper/207:05:242
2180521770,7sleep31525399cyclictest08:30:253
1131221570,6sleep31525399cyclictest11:35:193
2847191660,4ptp4l23584-21df09:45:151
2847191640,4ptp4l7247-21df_inode09:10:141
2847191610,4ptp4l0-21swapper/008:03:320
2847191590,4ptp4l0-21swapper/008:20:250
15253995928,3cyclictest41-21ksoftirqd/309:59:303
15250995923,9cyclictest9-21ksoftirqd/009:25:170
2847191580,4ptp4l0-21swapper/109:52:181
2847191580,3ptp4l0-21swapper/310:45:273
15253995824,7cyclictest41-21ksoftirqd/311:53:123
2847191560,9ptp4l3904-21diskstats12:30:152
2847191560,5ptp4l0-21swapper/107:09:051
2847191560,4ptp4l0-21swapper/109:21:051
2847191560,3ptp4l0-21swapper/111:25:261
15253995626,4cyclictest41-21ksoftirqd/309:45:343
15253995625,4cyclictest41-21ksoftirqd/309:26:043
15253995624,4cyclictest41-21ksoftirqd/307:19:313
2847191550,4ptp4l0-21swapper/109:38:351
2847191550,4ptp4l0-21swapper/109:38:351
2847191550,4ptp4l0-21swapper/011:02:370
15253995528,7cyclictest41-21ksoftirqd/310:26:263
15253995524,4cyclictest41-21ksoftirqd/308:14:183
15250995520,4cyclictest9-21ksoftirqd/011:26:100
2847191540,4ptp4l0-21swapper/110:00:261
15253995426,8cyclictest41-21ksoftirqd/311:40:173
15253995426,7cyclictest41-21ksoftirqd/308:27:433
15253995426,4cyclictest41-21ksoftirqd/310:13:353
15253995424,4cyclictest41-21ksoftirqd/312:17:023
15253995424,4cyclictest41-21ksoftirqd/311:11:033
2847191530,4ptp4l0-21swapper/112:27:361
2847191530,4ptp4l0-21swapper/112:13:521
2847191530,4ptp4l0-21swapper/109:07:321
2847191530,4ptp4l0-21swapper/109:07:321
2847191530,4ptp4l0-21swapper/010:33:430
2847191530,4ptp4l0-21swapper/009:17:000
2847191530,4ptp4l0-21swapper/009:11:010
2847191530,4ptp4l0-21swapper/008:28:080
2847191530,3ptp4l0-21swapper/107:25:511
2847191530,3ptp4l0-21swapper/107:14:051
2847191530,3ptp4l0-21swapper/007:36:180
15253995329,11cyclictest41-21ksoftirqd/312:36:253
15253995329,11cyclictest41-21ksoftirqd/312:36:253
15253995325,7cyclictest41-21ksoftirqd/307:35:243
15253995323,4cyclictest41-21ksoftirqd/308:53:153
15253995323,4cyclictest41-21ksoftirqd/308:03:303
15253995317,11cyclictest41-21ksoftirqd/307:25:203
15253995312,8cyclictest41-21ksoftirqd/308:36:533
15250995319,9cyclictest9-21ksoftirqd/008:11:300
2847191520,4ptp4l0-21swapper/210:40:212
2847191520,4ptp4l0-21swapper/210:40:212
2847191520,4ptp4l0-21swapper/109:59:111
2847191520,4ptp4l0-21swapper/009:41:220
2847191520,4ptp4l0-21swapper/008:54:110
2847191520,3ptp4l0-21swapper/010:20:250
2847191520,3ptp4l0-21swapper/009:46:480
2847191520,2ptp4l0-21swapper/011:11:490
2847191520,10ptp4l13213-21df_inode07:05:150
15253995227,6cyclictest41-21ksoftirqd/308:44:563
15253995223,7cyclictest41-21ksoftirqd/310:01:473
15253995222,7cyclictest41-21ksoftirqd/309:53:353
15250995224,6cyclictest9-21ksoftirqd/008:20:010
15250995223,5cyclictest9-21ksoftirqd/007:25:150
15250995222,7cyclictest9-21ksoftirqd/008:35:170
15250995222,6cyclictest9-21ksoftirqd/010:51:440
15250995221,6cyclictest9-21ksoftirqd/012:30:260
2847191510,4ptp4l0-21swapper/110:50:401
2847191510,4ptp4l0-21swapper/007:43:330
2847191510,3ptp4l0-21swapper/210:45:282
2847191510,3ptp4l0-21swapper/111:59:581
2847191510,3ptp4l0-21swapper/111:40:241
2847191510,3ptp4l0-21swapper/111:17:591
2847191510,3ptp4l0-21swapper/109:19:091
15253995126,6cyclictest41-21ksoftirqd/308:16:523
15253995123,3cyclictest41-21ksoftirqd/310:15:253
15253995121,4cyclictest41-21ksoftirqd/309:03:263
15250995126,8cyclictest9-21ksoftirqd/007:14:410
2847191500,4ptp4l0-21swapper/107:16:431
2847191500,4ptp4l0-21swapper/007:57:350
2847191500,3ptp4l0-21swapper/008:46:000
2847191500,11ptp4l0-21swapper/208:56:572
2847191500,11ptp4l0-21swapper/208:29:282
1525399509,9cyclictest41-21ksoftirqd/307:30:063
1525399505,7cyclictest41-21ksoftirqd/310:50:173
15253995028,10cyclictest41-21ksoftirqd/308:07:173
15253995022,7cyclictest41-21ksoftirqd/309:10:213
15253995020,7cyclictest41-21ksoftirqd/307:45:253
15253995019,7cyclictest41-21ksoftirqd/311:25:013
15250995021,6cyclictest9-21ksoftirqd/012:17:250
15250995021,4cyclictest9-21ksoftirqd/008:31:530
15253994920,8cyclictest41-21ksoftirqd/311:25:203
15253994920,4cyclictest41-21ksoftirqd/311:55:203
15253994920,3cyclictest41-21ksoftirqd/309:24:593
15253994919,7cyclictest41-21ksoftirqd/310:05:333
15253994919,7cyclictest41-21ksoftirqd/307:20:223
15250994921,3cyclictest9-21ksoftirqd/012:35:170
15250994921,3cyclictest9-21ksoftirqd/012:35:170
15250994919,7cyclictest9-21ksoftirqd/009:39:520
15250994919,7cyclictest9-21ksoftirqd/009:39:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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