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2026-09-14 - 03:24
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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 792 highest latencies:
System rackdslot4.osadl.org (updated Sun Sep 13, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
68492232166,23sleep30-21swapper/307:09:293
66252202168,23sleep10-21swapper/107:06:341
68762200167,22sleep20-21swapper/207:09:442
67062200166,23sleep00-21swapper/007:07:370
48092620,2sleep10-21swapper/110:20:181
138491620,1ptp4l401ktimersoftd/309:20:253
198142580,2sleep10-21swapper/109:45:201
25162550,1sleep10-21swapper/111:20:191
718999547,11cyclictest15869-21timedrift11:45:251
718999546,13cyclictest5772-21sort11:25:251
138491540,1ptp4l401ktimersoftd/310:00:133
718999538,10cyclictest18617-21awk08:35:281
317512530,2sleep10-21swapper/112:20:011
138491530,1ptp4l401ktimersoftd/311:48:113
19342520,1sleep00-21swapper/012:25:120
718999517,11cyclictest2514-21fschecks_count08:05:171
7188995147,3cyclictest111rcuc/007:40:150
7188995147,3cyclictest111rcuc/007:40:150
718899506,5cyclictest9-21ksoftirqd/008:00:280
138491500,1ptp4l391rcuc/307:56:373
718899497,5cyclictest9-21ksoftirqd/012:15:000
718999483,9cyclictest26415-21latency_hist11:04:591
718999481,10cyclictest11644-21latency_hist09:29:591
718999475,10cyclictest16681-21seq07:28:271
718899475,6cyclictest9-21ksoftirqd/010:10:280
718899475,6cyclictest9-21ksoftirqd/010:10:270
689724733,6sleep20-21swapper/207:10:012
718999465,10cyclictest26319-21seq08:51:511
718999461,9cyclictest32617-21/usr/sbin/munin08:00:221
718899467,5cyclictest9-21ksoftirqd/007:40:000
718899465,5cyclictest9-21ksoftirqd/011:46:210
7188994642,2cyclictest111rcuc/009:57:000
718999454,10cyclictest11528-21seq08:24:031
718999451,9cyclictest9630-21latency_hist07:15:001
718899458,4cyclictest9-21ksoftirqd/012:15:290
7188994510,5cyclictest9-21ksoftirqd/009:35:130
718999446,11cyclictest21691-21/usr/sbin/munin08:45:101
718999443,9cyclictest11659-21taskset07:17:121
718899449,5cyclictest9-21ksoftirqd/011:35:210
718899447,4cyclictest9-21ksoftirqd/010:44:060
718899446,6cyclictest9-21ksoftirqd/011:50:210
718899445,5cyclictest9-21ksoftirqd/010:22:410
718899443,6cyclictest9-21ksoftirqd/007:55:470
718999434,8cyclictest16160-21chrt09:36:331
718899435,5cyclictest9-21ksoftirqd/009:48:560
718899434,6cyclictest9-21ksoftirqd/009:15:220
718899433,5cyclictest9-21ksoftirqd/008:29:320
718899432,5cyclictest9-21ksoftirqd/011:20:080
138491430,0ptp4l401ktimersoftd/308:25:173
718999423,11cyclictest0-21swapper/109:55:271
718899426,5cyclictest9-21ksoftirqd/007:15:220
718899422,6cyclictest9-21ksoftirqd/008:16:570
718899422,6cyclictest9-21ksoftirqd/008:05:140
7188994210,5cyclictest9-21ksoftirqd/012:00:140
7190994135,3cyclictest223-21systemd-journal08:20:002
718999415,10cyclictest24435-21chrt07:45:081
718999414,11cyclictest26798-21chrt08:55:011
718999412,9cyclictest0-21swapper/109:13:131
718899413,5cyclictest9-21ksoftirqd/010:55:250
718899413,5cyclictest101ktimersoftd/012:35:230
718899412,6cyclictest9-21ksoftirqd/007:45:160
718899412,6cyclictest101ktimersoftd/008:30:250
138491410,0ptp4l401ktimersoftd/312:00:233
138491410,0ptp4l401ktimersoftd/310:25:193
718999404,8cyclictest28932-21taskset07:52:471
7189994035,3cyclictest23812-21cron09:55:011
718999401,7cyclictest0-21swapper/111:15:251
718899409,5cyclictest9-21ksoftirqd/012:05:220
718899407,5cyclictest9-21ksoftirqd/011:05:110
718899403,5cyclictest9-21ksoftirqd/007:30:240
718899402,6cyclictest9-21ksoftirqd/008:10:250
718899402,6cyclictest101ktimersoftd/011:10:300
138491400,0ptp4l401ktimersoftd/307:48:503
7191993934,3cyclictest29122-21sh07:55:003
718899393,9cyclictest9-21ksoftirqd/010:30:170
718899393,6cyclictest9-21ksoftirqd/010:10:000
718899393,6cyclictest9-21ksoftirqd/008:40:190
718899393,5cyclictest9-21ksoftirqd/008:35:270
718899392,5cyclictest9-21ksoftirqd/009:00:220
718899392,5cyclictest9-21ksoftirqd/009:00:220
718899391,5cyclictest9-21ksoftirqd/011:25:180
718999383,19cyclictest19448-21date07:35:011
718999381,11cyclictest0-21swapper/110:45:131
718999380,9cyclictest6393-21runrttasks12:33:011
718899387,5cyclictest9-21ksoftirqd/011:15:190
718899384,5cyclictest9-21ksoftirqd/010:26:430
718899383,5cyclictest9-21ksoftirqd/009:53:290
7188993834,3cyclictest9-21ksoftirqd/009:40:130
7188993834,3cyclictest9-21ksoftirqd/009:40:120
7191993731,4cyclictest41-21ksoftirqd/309:14:203
7191993731,4cyclictest41-21ksoftirqd/307:38:283
7190993731,4cyclictest33-21ksoftirqd/211:02:312
7190993731,4cyclictest33-21ksoftirqd/209:52:192
7190993731,4cyclictest33-21ksoftirqd/208:31:162
7190993731,4cyclictest33-21ksoftirqd/207:36:472
7190993731,3cyclictest33-21ksoftirqd/212:15:002
7190993730,5cyclictest33-21ksoftirqd/212:09:272
7190993730,4cyclictest33-21ksoftirqd/208:28:422
718999374,8cyclictest13368-21taskset07:20:231
718999371,33cyclictest13672-21cron10:40:001
718899375,5cyclictest9-21ksoftirqd/008:45:150
718899373,5cyclictest9-21ksoftirqd/012:31:300
7188993731,4cyclictest9-21ksoftirqd/011:43:160
7188993731,4cyclictest9-21ksoftirqd/010:00:270
7188993730,4cyclictest9-21ksoftirqd/007:27:260
718899372,5cyclictest9-21ksoftirqd/007:20:150
7191993630,4cyclictest41-21ksoftirqd/311:32:373
7191993630,4cyclictest41-21ksoftirqd/311:09:023
7190993631,3cyclictest33-21ksoftirqd/210:26:272
7190993630,4cyclictest33-21ksoftirqd/210:52:442
7190993629,5cyclictest33-21ksoftirqd/209:30:002
718999366,17cyclictest24725-21df_abs12:05:131
7189993630,4cyclictest25-21ksoftirqd/110:33:051
718899368,5cyclictest9-21ksoftirqd/010:37:170
718899365,8cyclictest9-21ksoftirqd/009:30:200
7188993633,2cyclictest9-21ksoftirqd/009:10:180
7188993633,2cyclictest111rcuc/007:10:170
7188993631,4cyclictest9-21ksoftirqd/008:50:040
718899362,6cyclictest9-21ksoftirqd/010:15:160
718899362,5cyclictest9-21ksoftirqd/009:06:390
718899361,5cyclictest9-21ksoftirqd/010:45:160
50798360,2rtkit-daemon506-21rtkit-daemon08:14:132
7191993529,4cyclictest41-21ksoftirqd/312:22:033
7191993529,4cyclictest41-21ksoftirqd/312:19:313
7191993529,4cyclictest41-21ksoftirqd/312:06:343
7191993529,4cyclictest41-21ksoftirqd/311:14:483
7191993529,4cyclictest41-21ksoftirqd/310:54:223
7191993529,4cyclictest41-21ksoftirqd/310:11:013
7191993529,4cyclictest41-21ksoftirqd/310:11:013
7191993529,4cyclictest41-21ksoftirqd/309:59:453
7191993529,4cyclictest41-21ksoftirqd/309:53:523
7191993529,4cyclictest41-21ksoftirqd/308:38:263
7191993529,4cyclictest41-21ksoftirqd/307:25:453
7191993528,5cyclictest41-21ksoftirqd/310:40:103
7191993528,5cyclictest41-21ksoftirqd/307:13:453
7191993527,6cyclictest41-21ksoftirqd/310:50:013
7190993531,3cyclictest33-21ksoftirqd/210:56:272
7190993530,3cyclictest33-21ksoftirqd/207:42:432
7190993530,3cyclictest33-21ksoftirqd/207:42:432
7190993529,4cyclictest33-21ksoftirqd/210:34:192
718999354,11cyclictest31293-21taskset07:55:491
7189993530,3cyclictest25-21ksoftirqd/110:00:091
7189993529,4cyclictest25-21ksoftirqd/112:13:461
7189993529,4cyclictest25-21ksoftirqd/109:07:161
718899355,5cyclictest9-21ksoftirqd/011:30:010
7188993531,3cyclictest9-21ksoftirqd/009:25:280
7188993531,2cyclictest111rcuc/010:50:220
7188993529,4cyclictest9-21ksoftirqd/007:55:010
718899351,5cyclictest9-21ksoftirqd/012:20:250
138491350,1ptp4l401ktimersoftd/309:00:143
138491350,1ptp4l401ktimersoftd/309:00:143
7191993428,4cyclictest41-21ksoftirqd/312:31:263
7191993428,4cyclictest41-21ksoftirqd/312:10:323
7191993428,4cyclictest41-21ksoftirqd/311:37:383
7191993428,4cyclictest41-21ksoftirqd/311:24:353
7191993428,4cyclictest41-21ksoftirqd/311:15:443
7191993428,4cyclictest41-21ksoftirqd/309:30:053
7191993428,4cyclictest41-21ksoftirqd/307:21:403
7191993427,4cyclictest41-21ksoftirqd/308:20:053
7190993430,3cyclictest33-21ksoftirqd/209:55:192
7190993429,3cyclictest33-21ksoftirqd/207:30:332
7190993428,4cyclictest33-21ksoftirqd/212:39:232
7190993428,4cyclictest33-21ksoftirqd/211:59:562
7190993428,4cyclictest33-21ksoftirqd/211:26:372
7190993428,4cyclictest33-21ksoftirqd/210:41:002
7190993428,4cyclictest33-21ksoftirqd/210:19:102
7190993428,4cyclictest33-21ksoftirqd/209:45:412
7190993428,4cyclictest33-21ksoftirqd/208:46:432
7190993427,4cyclictest33-21ksoftirqd/209:11:392
7190993426,5cyclictest33-21ksoftirqd/208:22:122
718999345,17cyclictest19966-21iostat08:40:181
7189993429,3cyclictest25-21ksoftirqd/110:42:361
7189993428,4cyclictest25-21ksoftirqd/111:11:411
7189993428,4cyclictest25-21ksoftirqd/110:58:531
7189993428,4cyclictest25-21ksoftirqd/109:16:511
7189993428,4cyclictest25-21ksoftirqd/108:11:001
7189993428,4cyclictest25-21ksoftirqd/107:40:311
7189993428,4cyclictest25-21ksoftirqd/107:40:311
718999341,10cyclictest15404-21latency08:30:191
718899344,5cyclictest9-21ksoftirqd/011:55:260
718899340,6cyclictest9-21ksoftirqd/008:20:250
138491340,0ptp4l401ktimersoftd/312:25:233
7191993328,3cyclictest41-21ksoftirqd/309:39:533
7191993327,4cyclictest41-21ksoftirqd/311:25:353
7191993327,4cyclictest41-21ksoftirqd/310:57:263
7191993327,4cyclictest41-21ksoftirqd/309:41:403
7191993327,4cyclictest41-21ksoftirqd/309:41:403
7190993328,3cyclictest33-21ksoftirqd/211:40:592
7190993328,3cyclictest33-21ksoftirqd/210:05:102
7190993328,3cyclictest33-21ksoftirqd/210:03:062
7190993328,3cyclictest33-21ksoftirqd/209:15:112
7190993328,3cyclictest33-21ksoftirqd/207:26:482
7190993327,4cyclictest33-21ksoftirqd/211:20:012
7190993327,4cyclictest33-21ksoftirqd/208:53:132
7190993327,4cyclictest33-21ksoftirqd/208:43:042
7190993327,4cyclictest33-21ksoftirqd/208:09:212
7190993327,4cyclictest33-21ksoftirqd/207:53:052
7189993328,3cyclictest25-21ksoftirqd/112:03:511
7189993328,3cyclictest25-21ksoftirqd/110:50:221
7189993328,3cyclictest25-21ksoftirqd/109:31:441
7189993328,3cyclictest25-21ksoftirqd/107:35:131
7189993327,4cyclictest25-21ksoftirqd/109:02:591
7189993327,4cyclictest25-21ksoftirqd/109:02:591
7189993326,4cyclictest25-21ksoftirqd/110:10:551
7189993326,4cyclictest25-21ksoftirqd/110:10:551
7189993311,20cyclictest3084-21mailstats10:15:231
7188993330,2cyclictest9-21ksoftirqd/011:00:130
7191993227,3cyclictest41-21ksoftirqd/308:52:383
7191993226,4cyclictest41-21ksoftirqd/311:58:333
7191993226,4cyclictest41-21ksoftirqd/310:31:433
7191993226,4cyclictest41-21ksoftirqd/310:19:153
7191993226,4cyclictest41-21ksoftirqd/308:34:133
7191993226,4cyclictest41-21ksoftirqd/307:17:143
719099325,26cyclictest0-21swapper/209:35:232
7190993228,3cyclictest33-21ksoftirqd/211:37:262
7190993227,3cyclictest33-21ksoftirqd/212:22:542
7190993227,3cyclictest33-21ksoftirqd/211:10:162
7190993227,3cyclictest33-21ksoftirqd/209:06:012
7190993227,3cyclictest33-21ksoftirqd/209:02:562
7190993227,3cyclictest33-21ksoftirqd/209:02:562
7190993227,3cyclictest33-21ksoftirqd/208:02:482
7190993226,4cyclictest33-21ksoftirqd/210:46:382
7190993226,4cyclictest33-21ksoftirqd/210:37:042
7190993226,4cyclictest33-21ksoftirqd/210:14:132
7190993226,4cyclictest33-21ksoftirqd/210:14:122
7190993226,4cyclictest33-21ksoftirqd/208:36:572
7190993224,5cyclictest33-21ksoftirqd/209:45:002
7190993224,5cyclictest33-21ksoftirqd/209:45:002
718999326,12cyclictest13334-21/usr/sbin/munin08:25:251
718999324,10cyclictest223-21systemd-journal11:33:281
7189993226,4cyclictest25-21ksoftirqd/109:41:061
7189993226,4cyclictest25-21ksoftirqd/109:41:061
7188993228,3cyclictest9-21ksoftirqd/008:55:250
7188993226,4cyclictest9-21ksoftirqd/009:24:000
7191993126,3cyclictest41-21ksoftirqd/311:50:143
7191993125,4cyclictest41-21ksoftirqd/309:45:503
719099313,26cyclictest0-21swapper/212:25:222
7190993126,3cyclictest33-21ksoftirqd/207:25:002
7190993125,4cyclictest33-21ksoftirqd/210:22:272
718999315,7cyclictest12478-21if_enp1s011:40:181
718999314,18cyclictest7216-21/usr/sbin/munin10:25:161
7189993126,3cyclictest25-21ksoftirqd/112:38:091
7189993126,3cyclictest25-21ksoftirqd/112:23:331
7189993126,3cyclictest25-21ksoftirqd/110:08:271
7189993125,4cyclictest25-21ksoftirqd/111:57:221
7189993125,4cyclictest25-21ksoftirqd/111:52:371
7189993125,4cyclictest25-21ksoftirqd/108:17:101
138491310,0ptp4l401ktimersoftd/311:43:243
7191993025,3cyclictest41-21ksoftirqd/312:35:353
7191993025,3cyclictest41-21ksoftirqd/310:24:523
7191993025,3cyclictest41-21ksoftirqd/308:20:003
7191993024,4cyclictest41-21ksoftirqd/309:07:553
7190993025,3cyclictest33-21ksoftirqd/212:15:042
718999305,10cyclictest1319-21snmpd11:37:241
7189993025,3cyclictest25-21ksoftirqd/112:26:271
7189993024,4cyclictest25-21ksoftirqd/109:22:251
138491300,0ptp4l401ktimersoftd/309:16:293
138491300,0ptp4l401ktimersoftd/308:03:313
7191992924,3cyclictest41-21ksoftirqd/310:37:023
7191992924,3cyclictest41-21ksoftirqd/308:57:223
7191992924,3cyclictest41-21ksoftirqd/307:34:083
7191992923,4cyclictest41-21ksoftirqd/307:43:583
7191992923,4cyclictest41-21ksoftirqd/307:43:583
7190992924,3cyclictest33-21ksoftirqd/211:52:332
7190992924,3cyclictest33-21ksoftirqd/211:47:082
7190992924,3cyclictest33-21ksoftirqd/208:59:102
7190992924,3cyclictest33-21ksoftirqd/207:59:312
7190992923,4cyclictest33-21ksoftirqd/209:30:202
7189992924,3cyclictest25-21ksoftirqd/111:07:111
138491290,0ptp4l401ktimersoftd/308:06:033
7191992824,3cyclictest41-21ksoftirqd/310:09:523
7191992822,4cyclictest41-21ksoftirqd/309:27:443
7191992822,4cyclictest41-21ksoftirqd/308:44:243
7190992823,3cyclictest33-21ksoftirqd/212:02:002
7190992823,3cyclictest33-21ksoftirqd/211:23:222
7190992823,3cyclictest33-21ksoftirqd/207:47:442
7191992722,3cyclictest41-21ksoftirqd/311:03:313
7191992722,3cyclictest41-21ksoftirqd/308:10:453
7190992723,3cyclictest33-21ksoftirqd/211:05:122
7190992721,3cyclictest33-21ksoftirqd/209:20:262
7190992621,3cyclictest33-21ksoftirqd/207:15:062
7191992520,3cyclictest41-21ksoftirqd/308:47:093
7190992520,3cyclictest33-21ksoftirqd/212:34:442
7190992419,3cyclictest33-21ksoftirqd/211:34:392
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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