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2026-03-21 - 15:44
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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 highest latencies:
System rackdslot1.osadl.org (updated Sat Mar 21, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16830997134,5cyclictest25-21ksoftirqd/108:25:001
16830996932,4cyclictest25-21ksoftirqd/107:20:001
134491680,5ptp4l0-21swapper/310:15:123
16829996626,4cyclictest9-21ksoftirqd/007:45:260
295532650,5sleep233-21ksoftirqd/207:35:212
295532650,5sleep233-21ksoftirqd/207:35:212
16829996519,3cyclictest9-21ksoftirqd/011:45:220
16830996433,4cyclictest25-21ksoftirqd/108:00:261
16830996329,7cyclictest25-21ksoftirqd/110:20:141
16830996232,6cyclictest25-21ksoftirqd/109:50:271
16830996232,4cyclictest25-21ksoftirqd/111:00:131
16829996226,9cyclictest9-21ksoftirqd/009:55:180
16829996220,9cyclictest9-21ksoftirqd/008:15:010
273942610,4sleep10-21swapper/112:10:011
16830996133,3cyclictest25-21ksoftirqd/111:35:271
16830996131,4cyclictest25-21ksoftirqd/112:10:241
16830996130,4cyclictest25-21ksoftirqd/110:35:271
16830996128,9cyclictest25-21ksoftirqd/108:35:191
16830996128,7cyclictest25-21ksoftirqd/109:30:171
16830996126,4cyclictest25-21ksoftirqd/110:10:271
16830996122,4cyclictest25-21ksoftirqd/110:05:001
16829996130,4cyclictest9-21ksoftirqd/008:45:180
16830996029,4cyclictest25-21ksoftirqd/111:50:191
16830996028,2cyclictest25-21ksoftirqd/109:17:251
16830996027,3cyclictest25-21ksoftirqd/109:20:001
16829996031,3cyclictest9-21ksoftirqd/009:25:260
16829996028,4cyclictest9-21ksoftirqd/012:05:200
16829996018,9cyclictest9-21ksoftirqd/007:30:250
16830995932,3cyclictest25-21ksoftirqd/111:00:011
16830995930,4cyclictest25-21ksoftirqd/110:45:261
16830995930,4cyclictest25-21ksoftirqd/107:55:211
16830995928,4cyclictest25-21ksoftirqd/112:35:171
16830995928,4cyclictest25-21ksoftirqd/108:28:471
16830995925,4cyclictest25-21ksoftirqd/107:30:151
16829995918,8cyclictest9-21ksoftirqd/009:05:190
134491590,5ptp4l0-21swapper/108:55:221
134491590,4ptp4l0-21swapper/008:00:210
16830995826,3cyclictest25-21ksoftirqd/109:05:191
16830995824,4cyclictest25-21ksoftirqd/108:50:261
16830995822,3cyclictest25-21ksoftirqd/112:20:261
16830995821,6cyclictest25-21ksoftirqd/110:50:141
1682999583,6cyclictest9-21ksoftirqd/009:15:140
134491580,4ptp4l0-21swapper/211:00:262
134491580,3ptp4l0-21swapper/209:26:542
16830995727,3cyclictest25-21ksoftirqd/110:15:251
16829995726,9cyclictest9-21ksoftirqd/008:35:200
134491570,3ptp4l0-21swapper/311:05:233
134491570,3ptp4l0-21swapper/309:23:473
16830995634,7cyclictest25-21ksoftirqd/107:45:181
16830995623,6cyclictest25-21ksoftirqd/107:25:281
16830995620,7cyclictest25-21ksoftirqd/111:10:201
134491560,4ptp4l0-21swapper/310:47:583
134491560,10ptp4l0-21swapper/212:19:342
16830995524,3cyclictest25-21ksoftirqd/112:00:151
16830995516,7cyclictest25-21ksoftirqd/112:30:281
16829995524,6cyclictest9-21ksoftirqd/008:40:190
16829995524,2cyclictest9-21ksoftirqd/010:38:440
16829995522,6cyclictest9-21ksoftirqd/012:20:200
16829995522,3cyclictest9-21ksoftirqd/011:15:170
16829995510,6cyclictest9-21ksoftirqd/008:20:190
16830995424,2cyclictest25-21ksoftirqd/110:31:391
16830995422,4cyclictest25-21ksoftirqd/109:40:231
1682999545,8cyclictest9-21ksoftirqd/009:00:220
1682999545,8cyclictest0-21swapper/010:05:000
16829995428,3cyclictest9-21ksoftirqd/008:50:160
16829995419,10cyclictest9-21ksoftirqd/009:50:160
16829995416,3cyclictest9-21ksoftirqd/008:07:450
134491540,4ptp4l0-21swapper/308:38:593
134491540,4ptp4l0-21swapper/308:08:473
16830995322,3cyclictest25-21ksoftirqd/108:45:201
16830995321,3cyclictest25-21ksoftirqd/107:51:091
16830995320,6cyclictest25-21ksoftirqd/108:40:171
16830995320,3cyclictest25-21ksoftirqd/111:40:261
1682999533,9cyclictest9-21ksoftirqd/007:55:270
16829995316,8cyclictest9-21ksoftirqd/012:29:280
134491530,9ptp4l0-21swapper/308:03:353
27872520,3sleep32791-21irqrtprio11:15:183
16830995223,8cyclictest25-21ksoftirqd/110:30:011
16830995222,7cyclictest25-21ksoftirqd/107:20:251
16830995221,9cyclictest25-21ksoftirqd/108:15:111
134491520,3ptp4l0-21swapper/210:00:162
16831995126,17cyclictest33-21ksoftirqd/210:10:002
1683099517,3cyclictest25-21ksoftirqd/111:15:271
16830995136,4cyclictest25-21ksoftirqd/110:40:241
16830995136,3cyclictest25-21ksoftirqd/112:25:281
16830995136,3cyclictest25-21ksoftirqd/109:40:001
16830995118,4cyclictest25-21ksoftirqd/111:45:181
16829995133,9cyclictest9-21ksoftirqd/007:40:220
134491510,4ptp4l0-21swapper/308:40:343
134491510,4ptp4l0-21swapper/009:23:590
134491510,10ptp4l0-21swapper/307:10:223
1683099506,3cyclictest25-21ksoftirqd/108:08:391
16830995036,5cyclictest25-21ksoftirqd/111:26:051
16829995033,4cyclictest9-21ksoftirqd/010:35:010
134491500,9ptp4l14748-21diskstats07:05:141
134491500,8ptp4l2318-21gnome-shell07:05:580
134491500,4ptp4l0-21swapper/212:34:112
134491500,4ptp4l0-21swapper/010:48:040
134491500,4ptp4l0-21swapper/010:40:320
134491500,4ptp4l0-21swapper/010:07:320
134491500,3ptp4l0-21swapper/310:50:293
1683099496,2cyclictest25-21ksoftirqd/109:45:141
1683099492,7cyclictest25-21ksoftirqd/111:34:111
16830994922,3cyclictest25-21ksoftirqd/111:56:441
16830994918,3cyclictest25-21ksoftirqd/111:10:011
1683099490,7cyclictest25-21ksoftirqd/107:35:131
1683099490,7cyclictest25-21ksoftirqd/107:35:131
1682999493,2cyclictest9-21ksoftirqd/011:05:000
134491490,5ptp4l0-21swapper/011:09:210
134491490,4ptp4l0-21swapper/010:21:100
134491490,4ptp4l0-21swapper/009:37:160
134491490,4ptp4l0-21swapper/009:10:080
134491490,3ptp4l0-21swapper/308:24:013
134491490,3ptp4l0-21swapper/209:41:022
16830994828,3cyclictest25-21ksoftirqd/109:25:281
16829994836,3cyclictest9-21ksoftirqd/012:10:250
16829994830,5cyclictest9-21ksoftirqd/010:15:150
16829994816,3cyclictest9-21ksoftirqd/007:50:250
134491480,4ptp4l0-21swapper/308:13:433
134491480,4ptp4l0-21swapper/212:13:202
134491480,3ptp4l0-21swapper/011:56:050
16830994732,3cyclictest25-21ksoftirqd/109:10:141
16830994731,7cyclictest25-21ksoftirqd/110:05:161
16830994730,4cyclictest25-21ksoftirqd/109:00:131
1683099471,6cyclictest25-21ksoftirqd/111:21:311
1683099470,3cyclictest25-21ksoftirqd/108:30:111
16829994743,2cyclictest111rcuc/009:45:000
1682999474,2cyclictest9-21ksoftirqd/010:25:200
16829994738,3cyclictest9-21ksoftirqd/007:20:250
16829994733,4cyclictest9-21ksoftirqd/008:30:220
16829994733,3cyclictest9-21ksoftirqd/011:30:240
16829994730,9cyclictest9-21ksoftirqd/010:55:200
16829994728,8cyclictest9-21ksoftirqd/011:40:240
16829994722,3cyclictest9-21ksoftirqd/012:04:440
134491470,4ptp4l0-21swapper/312:24:343
134491470,4ptp4l0-21swapper/307:44:003
134491470,3ptp4l0-21swapper/212:06:362
16830994632,3cyclictest25-21ksoftirqd/109:55:151
16830994632,3cyclictest25-21ksoftirqd/108:10:221
16830994629,8cyclictest25-21ksoftirqd/112:15:171
16830994616,2cyclictest25-21ksoftirqd/107:14:061
16829994633,3cyclictest9-21ksoftirqd/012:38:460
16829994632,3cyclictest9-21ksoftirqd/012:15:220
16829994630,8cyclictest9-21ksoftirqd/010:10:180
16829994629,3cyclictest9-21ksoftirqd/012:30:260
16829994617,9cyclictest9-21ksoftirqd/007:10:140
1682999460,7cyclictest9-21ksoftirqd/008:15:270
134491460,4ptp4l0-21swapper/311:31:233
134491460,4ptp4l0-21swapper/211:19:582
134491460,4ptp4l0-21swapper/211:10:392
134491460,3ptp4l0-21swapper/210:42:582
134491460,3ptp4l0-21swapper/207:40:202
1682999454,7cyclictest0-21swapper/008:55:160
16829994532,3cyclictest9-21ksoftirqd/010:50:130
16829994531,4cyclictest9-21ksoftirqd/011:29:430
16829994531,4cyclictest9-21ksoftirqd/007:25:560
1682999452,5cyclictest0-21swapper/007:35:120
1682999452,5cyclictest0-21swapper/007:35:120
1682999450,9cyclictest9-21ksoftirqd/009:45:140
134491450,6ptp4l560-21kworker/2:210:39:482
134491450,3ptp4l0-21swapper/209:06:192
1683199444,23cyclictest137891phc2sys10:27:582
1683099441,2cyclictest121rcu_preempt07:40:281
16829994433,3cyclictest9-21ksoftirqd/011:20:270
16829994427,9cyclictest9-21ksoftirqd/007:15:180
16829994425,4cyclictest9-21ksoftirqd/009:30:170
134491440,9ptp4l0-21swapper/011:37:440
134491440,6ptp4l0-21swapper/308:55:153
134491440,4ptp4l0-21swapper/308:26:153
134491440,4ptp4l0-21swapper/307:24:523
134491440,3ptp4l1147-21ls11:10:270
16831994339,3cyclictest33-21ksoftirqd/209:50:002
1682999433,4cyclictest0-21swapper/011:50:470
134491430,5ptp4l0-21swapper/008:25:140
134491430,4ptp4l0-21swapper/310:40:123
134491430,10ptp4l0-21swapper/308:31:003
16831994237,3cyclictest33-21ksoftirqd/211:00:002
134491420,6ptp4l0-21swapper/207:55:032
134491420,5ptp4l3873-21/usr/sbin/munin10:10:163
134491420,5ptp4l30315-21ps09:55:253
134491420,5ptp4l20689-21apt-get11:55:122
134491420,5ptp4l0-21swapper/307:35:223
134491420,5ptp4l0-21swapper/307:35:223
134491420,4ptp4l2411-21ls08:55:262
134491420,4ptp4l11165-21apt-get11:35:123
134491420,4ptp4l0-21swapper/309:05:193
134491420,4ptp4l0-21swapper/307:55:153
134491420,3ptp4l0-21swapper/208:39:442
134491420,10ptp4l0-21swapper/308:49:103
16831994136,3cyclictest33-21ksoftirqd/209:40:002
134491410,5ptp4l0-21swapper/210:45:202
134491410,5ptp4l0-21swapper/208:15:272
134491410,4ptp4l6763-21apt-get12:35:112
134491410,4ptp4l30906-21ls12:15:193
134491410,4ptp4l29108-21apt-get09:55:142
134491410,4ptp4l23003-21df10:50:142
134491410,4ptp4l0-21swapper/309:35:033
134491410,3ptp4l9027-21diskstats10:20:162
134491410,3ptp4l4162-21ls07:50:222
134491410,3ptp4l17170-21ls10:35:273
134491410,3ptp4l0-21swapper/211:06:392
16831994035,3cyclictest33-21ksoftirqd/210:10:182
16831994035,3cyclictest33-21ksoftirqd/208:50:012
134491400,5ptp4l19754-21/usr/sbin/munin08:25:152
134491400,5ptp4l1301-21snmpd10:33:503
134491400,5ptp4l0-21swapper/311:55:123
134491400,5ptp4l0-21swapper/311:20:123
134491400,5ptp4l0-21swapper/309:45:253
134491400,5ptp4l0-21swapper/309:25:153
134491400,5ptp4l0-21swapper/308:50:243
134491400,5ptp4l0-21swapper/307:31:513
134491400,5ptp4l0-21swapper/211:45:152
134491400,5ptp4l0-21swapper/209:00:172
134491400,4ptp4l782-21ps11:10:253
134491400,4ptp4l5940-21apt-get10:15:022
134491400,4ptp4l3667-21/usr/sbin/munin07:50:183
134491400,4ptp4l27024-21meminfo07:30:212
134491400,4ptp4l17633-21/usr/sbin/munin09:30:172
134491400,4ptp4l13784-21df_inode11:40:142
134491400,4ptp4l0-21swapper/310:22:213
134491400,4ptp4l0-21swapper/310:05:113
134491400,4ptp4l0-21swapper/309:40:103
134491400,4ptp4l0-21swapper/309:30:213
134491400,4ptp4l0-21swapper/309:15:233
134491400,4ptp4l0-21swapper/308:20:003
134491400,4ptp4l0-21swapper/307:15:123
134491400,4ptp4l0-21swapper/212:26:342
134491400,4ptp4l0-21swapper/209:50:162
134491400,4ptp4l0-21swapper/209:20:122
134491400,4ptp4l0-21swapper/207:46:232
134491400,4ptp4l0-21swapper/207:17:462
134491400,3ptp4l7687-21ntp_states11:25:233
134491400,3ptp4l31042-21apt-get08:50:122
134491400,3ptp4l18391-21apt-get11:50:123
134491400,10ptp4l0-21swapper/309:12:263
16831993925,11cyclictest33-21ksoftirqd/211:40:002
134491390,5ptp4l23302-21timerandwakeup08:30:262
134491390,4ptp4l23423-21perl12:00:153
134491390,4ptp4l1272-21if_enp4s007:45:163
134491390,4ptp4l0-21swapper/312:36:443
134491390,4ptp4l0-21swapper/312:33:263
134491390,4ptp4l0-21swapper/312:25:143
134491390,4ptp4l0-21swapper/312:05:263
134491390,4ptp4l0-21swapper/311:44:243
134491390,4ptp4l0-21swapper/311:00:183
134491390,4ptp4l0-21swapper/310:56:593
134491390,4ptp4l0-21swapper/309:00:243
134491390,4ptp4l0-21swapper/307:25:223
134491390,4ptp4l0-21swapper/211:50:252
134491390,4ptp4l0-21swapper/209:19:482
134491390,4ptp4l0-21swapper/208:40:222
134491390,4ptp4l0-21swapper/208:20:252
134491390,4ptp4l0-21swapper/208:10:182
134491390,4ptp4l0-21swapper/208:05:292
134491390,4ptp4l0-21swapper/208:00:262
134491390,4ptp4l0-21swapper/207:20:252
134491390,4ptp4l0-21swapper/207:14:572
134491390,3ptp4l9431-21iostat11:30:162
134491390,3ptp4l16355-21diskstats11:45:143
134491390,3ptp4l0-21swapper/211:26:182
134491390,2ptp4l28376-21ls09:50:273
134491380,4ptp4l0-21swapper/312:10:013
134491380,4ptp4l0-21swapper/212:20:082
134491380,4ptp4l0-21swapper/210:30:172
134491380,4ptp4l0-21swapper/209:10:222
134491380,4ptp4l0-21swapper/207:27:432
134491380,3ptp4l0-21swapper/310:25:063
134491380,3ptp4l0-21swapper/310:00:153
134491380,3ptp4l0-21swapper/211:20:072
134491370,3ptp4l0-21swapper/212:00:132
1378913429,1phc2sys0-21swapper/307:08:123
46198160,5rtkit-daemon0-21swapper/207:08:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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