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2026-04-19 - 20:36
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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 Sun Apr 19, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
53592201167,22sleep20-21swapper/207:09:082
53582201166,24sleep10-21swapper/107:09:061
138591200165,23phc2sys0-21swapper/307:08:003
52682198164,22sleep00-21swapper/007:07:570
220321680,7sleep0572999cyclictest08:05:200
477321350,5sleep2573199cyclictest08:10:202
942521170,3sleep3573299cyclictest10:30:173
138491790,1ptp4l391rcuc/309:50:183
138491760,1ptp4l391rcuc/309:55:173
573299689,18cyclictest30804-21latency_hist09:05:013
302042640,4sleep3573299cyclictest10:05:263
50872610,2sleep30-21swapper/309:15:253
573299560,3cyclictest18182-21seq11:51:223
233952560,2sleep3401ktimersoftd/307:45:133
138491550,1ptp4l391rcuc/309:30:233
286782520,2sleep20-21swapper/212:15:152
138491440,0ptp4l401ktimersoftd/307:33:153
138491440,0ptp4l401ktimersoftd/307:33:153
573299421,3cyclictest0-21swapper/310:29:193
138491410,34ptp4l0-21swapper/307:10:003
5732994035,3cyclictest6781-21fschecks_count12:35:173
138491400,0ptp4l401ktimersoftd/311:35:503
5730993933,4cyclictest25-21ksoftirqd/108:55:011
5732993823,13cyclictest41-21ksoftirqd/312:18:373
5731993832,4cyclictest33-21ksoftirqd/211:05:002
5731993831,5cyclictest33-21ksoftirqd/212:27:092
5731993831,4cyclictest33-21ksoftirqd/212:05:042
5731993831,4cyclictest33-21ksoftirqd/209:37:212
5730993833,3cyclictest25-21ksoftirqd/111:20:001
5729993832,4cyclictest9-21ksoftirqd/012:05:180
5729993730,5cyclictest9-21ksoftirqd/009:26:400
50798370,6rtkit-daemon0-21swapper/208:07:252
5732993630,4cyclictest41-21ksoftirqd/312:05:093
5732993630,4cyclictest41-21ksoftirqd/308:00:003
5731993630,4cyclictest33-21ksoftirqd/210:33:572
5731993630,4cyclictest33-21ksoftirqd/210:12:072
5730993631,3cyclictest25-21ksoftirqd/110:10:011
5730993631,3cyclictest25-21ksoftirqd/107:25:161
5730993630,4cyclictest25-21ksoftirqd/112:25:111
5730993630,4cyclictest25-21ksoftirqd/108:31:491
5729993630,4cyclictest9-21ksoftirqd/011:04:040
5729993630,4cyclictest9-21ksoftirqd/009:45:410
5729993630,4cyclictest9-21ksoftirqd/009:45:410
5729993630,4cyclictest9-21ksoftirqd/009:08:400
5729993630,4cyclictest9-21ksoftirqd/008:59:240
5729993630,3cyclictest9-21ksoftirqd/011:55:170
149862360,1sleep20-21swapper/207:25:232
138491360,0ptp4l401ktimersoftd/308:20:243
5732993529,4cyclictest41-21ksoftirqd/311:02:153
5732993529,4cyclictest41-21ksoftirqd/308:51:253
5731993529,4cyclictest33-21ksoftirqd/207:51:262
5731993529,4cyclictest33-21ksoftirqd/207:20:112
5731993528,4cyclictest33-21ksoftirqd/210:08:502
5730993529,4cyclictest25-21ksoftirqd/109:16:301
5730993529,4cyclictest25-21ksoftirqd/108:26:231
573099351,3cyclictest25583-21apt10:00:001
5729993529,4cyclictest9-21ksoftirqd/010:42:540
5729993529,4cyclictest9-21ksoftirqd/009:24:430
5729993529,4cyclictest9-21ksoftirqd/008:31:040
5729993529,4cyclictest9-21ksoftirqd/007:53:450
5729993528,5cyclictest9-21ksoftirqd/012:11:280
5732993428,4cyclictest41-21ksoftirqd/310:20:023
5732993428,4cyclictest41-21ksoftirqd/307:20:313
5732993428,4cyclictest41-21ksoftirqd/307:18:423
5731993428,4cyclictest33-21ksoftirqd/212:23:172
5731993428,4cyclictest33-21ksoftirqd/211:17:452
5731993428,4cyclictest33-21ksoftirqd/209:46:362
5731993428,4cyclictest33-21ksoftirqd/209:46:362
5731993428,4cyclictest33-21ksoftirqd/209:31:032
5731993428,4cyclictest33-21ksoftirqd/208:19:142
5731993427,4cyclictest33-21ksoftirqd/207:41:352
5731993426,5cyclictest33-21ksoftirqd/211:07:032
573099346,27cyclictest0-21swapper/112:20:231
5730993429,3cyclictest25-21ksoftirqd/109:54:471
5730993428,4cyclictest25-21ksoftirqd/111:26:121
5730993428,4cyclictest25-21ksoftirqd/111:08:551
5730993428,4cyclictest25-21ksoftirqd/108:18:331
5730993428,4cyclictest25-21ksoftirqd/107:30:071
5730993428,4cyclictest25-21ksoftirqd/107:30:071
5730993428,3cyclictest25-21ksoftirqd/108:41:581
5729993429,3cyclictest9-21ksoftirqd/012:30:110
5729993428,4cyclictest9-21ksoftirqd/012:29:170
5729993428,4cyclictest9-21ksoftirqd/010:30:350
5729993428,4cyclictest9-21ksoftirqd/010:26:210
5729993428,4cyclictest9-21ksoftirqd/009:56:000
5729993428,4cyclictest9-21ksoftirqd/009:18:090
5729993428,4cyclictest9-21ksoftirqd/009:12:440
5729993428,4cyclictest9-21ksoftirqd/008:20:210
5729993428,4cyclictest9-21ksoftirqd/007:58:380
5729993428,4cyclictest9-21ksoftirqd/007:25:290
5729993428,4cyclictest9-21ksoftirqd/007:20:270
5729993427,5cyclictest9-21ksoftirqd/007:18:510
5729993427,4cyclictest9-21ksoftirqd/009:34:100
5732993328,3cyclictest41-21ksoftirqd/310:17:413
5732993328,3cyclictest41-21ksoftirqd/308:07:333
5732993328,3cyclictest41-21ksoftirqd/308:04:483
5732993327,4cyclictest41-21ksoftirqd/312:13:593
5732993327,4cyclictest41-21ksoftirqd/311:14:423
5732993327,4cyclictest41-21ksoftirqd/310:47:063
5732993327,4cyclictest41-21ksoftirqd/309:23:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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