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2026-05-21 - 03:34
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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 Thu May 21, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
478521420,4sleep1692599cyclictest23:40:181
68812750,4sleep00-21swapper/022:35:230
6926997035,6cyclictest33-21ksoftirqd/220:30:012
134491700,17ptp4l0-21swapper/019:34:140
6926996734,5cyclictest33-21ksoftirqd/221:24:592
134491660,5ptp4l0-21swapper/019:25:210
134491660,4ptp4l0-21swapper/022:45:130
6926996535,9cyclictest33-21ksoftirqd/220:40:212
6926996532,9cyclictest33-21ksoftirqd/223:45:222
6926996532,10cyclictest33-21ksoftirqd/222:45:152
6926996530,4cyclictest33-21ksoftirqd/221:44:152
134491640,4ptp4l0-21swapper/019:15:020
6926996332,4cyclictest33-21ksoftirqd/220:20:022
6926996331,9cyclictest33-21ksoftirqd/222:35:192
6926996331,6cyclictest33-21ksoftirqd/200:20:262
6926996329,8cyclictest33-21ksoftirqd/219:15:272
6926996329,5cyclictest33-21ksoftirqd/200:00:182
6926996231,9cyclictest33-21ksoftirqd/222:05:152
6926996231,6cyclictest33-21ksoftirqd/220:30:242
6926996230,9cyclictest33-21ksoftirqd/220:20:292
6926996230,6cyclictest33-21ksoftirqd/221:50:012
6926996230,6cyclictest33-21ksoftirqd/221:50:012
6926996229,5cyclictest33-21ksoftirqd/219:10:152
6926996228,9cyclictest33-21ksoftirqd/200:35:212
6926996228,8cyclictest33-21ksoftirqd/221:35:232
175652620,6sleep3692799cyclictest20:40:243
6926996131,4cyclictest33-21ksoftirqd/221:05:002
6926996130,5cyclictest33-21ksoftirqd/219:20:152
6926996033,7cyclictest33-21ksoftirqd/223:25:152
6926996031,19cyclictest33-21ksoftirqd/223:25:002
6926996025,5cyclictest33-21ksoftirqd/221:30:372
692699602,32cyclictest0-21swapper/222:19:102
692699602,32cyclictest0-21swapper/200:08:262
6926996022,5cyclictest33-21ksoftirqd/219:50:152
6926995925,4cyclictest33-21ksoftirqd/200:32:312
692699592,36cyclictest0-21swapper/219:35:142
6926995828,6cyclictest33-21ksoftirqd/220:50:142
6926995827,5cyclictest33-21ksoftirqd/219:55:142
6926995821,5cyclictest33-21ksoftirqd/219:30:212
6926995726,5cyclictest33-21ksoftirqd/223:15:182
134491570,3ptp4l0-21swapper/121:55:131
134491570,3ptp4l0-21swapper/021:15:300
6926995639,3cyclictest33-21ksoftirqd/223:10:162
6926995626,6cyclictest33-21ksoftirqd/222:25:152
6926995625,5cyclictest33-21ksoftirqd/222:40:172
6926995624,5cyclictest33-21ksoftirqd/223:40:272
6926995623,4cyclictest33-21ksoftirqd/223:03:532
134491560,3ptp4l0-21swapper/322:56:113
692699555,6cyclictest33-21ksoftirqd/222:55:132
692699552,34cyclictest0-21swapper/220:10:202
6926995521,3cyclictest33-21ksoftirqd/222:30:012
245392550,2sleep1231rcuc/100:25:001
134491550,5ptp4l0-21swapper/022:15:390
134491550,4ptp4l0-21swapper/121:45:151
134491550,4ptp4l0-21swapper/121:45:151
134491550,3ptp4l0-21swapper/123:20:081
134491550,3ptp4l0-21swapper/022:00:170
692699546,5cyclictest33-21ksoftirqd/223:30:272
6926995424,6cyclictest33-21ksoftirqd/223:50:112
692699542,21cyclictest0-21swapper/223:07:502
260482540,5sleep10-21swapper/100:25:241
134491540,5ptp4l0-21swapper/023:20:140
134491540,4ptp4l0-21swapper/122:01:511
134491540,4ptp4l0-21swapper/020:32:490
134491540,3ptp4l0-21swapper/120:25:101
692699534,9cyclictest33-21ksoftirqd/221:30:012
692699534,6cyclictest33-21ksoftirqd/223:40:012
692699534,5cyclictest33-21ksoftirqd/220:55:182
692699532,32cyclictest0-21swapper/220:35:242
692699532,17cyclictest0-21swapper/220:01:502
134491530,5ptp4l0-21swapper/119:05:201
134491530,4ptp4l27718-21sshd21:00:331
134491530,4ptp4l0-21swapper/122:15:221
134491530,3ptp4l0-21swapper/122:50:251
692699525,5cyclictest19202-21gpgv21:55:012
692699525,4cyclictest16348-21latency_hist19:30:012
692699524,6cyclictest33-21ksoftirqd/221:05:152
692699524,6cyclictest33-21ksoftirqd/221:05:142
692699523,7cyclictest0-21swapper/222:20:162
692699522,7cyclictest0-21swapper/222:50:122
692699522,7cyclictest0-21swapper/219:40:192
692699522,19cyclictest0-21swapper/221:17:592
134491520,5ptp4l0-21swapper/219:08:442
134491520,3ptp4l0-21swapper/119:53:391
692699515,5cyclictest33-21ksoftirqd/200:15:132
692699513,5cyclictest12826-21awk00:00:002
6926995131,9cyclictest33-21ksoftirqd/200:25:162
692699512,7cyclictest0-21swapper/222:10:142
692699512,6cyclictest0-21swapper/222:00:242
134491510,4ptp4l0-21swapper/122:07:231
134491510,4ptp4l0-21swapper/019:54:540
134491510,4ptp4l0-21swapper/019:49:370
692699506,7cyclictest33-21ksoftirqd/220:05:312
692699502,8cyclictest0-21swapper/219:45:252
692699501,9cyclictest33-21ksoftirqd/221:55:132
692699501,6cyclictest33-21ksoftirqd/220:45:172
6925995017,4cyclictest25-21ksoftirqd/121:15:031
6925995016,5cyclictest25-21ksoftirqd/120:55:341
134491500,5ptp4l0-21swapper/319:09:583
134491500,4ptp4l0-21swapper/121:32:081
134491500,4ptp4l0-21swapper/120:04:121
134491500,3ptp4l0-21swapper/021:14:030
134491500,11ptp4l0-21swapper/100:10:171
62232490,7sleep3692799cyclictest21:25:213
134491490,9ptp4l0-21swapper/019:05:090
134491490,4ptp4l0-21swapper/023:30:030
134491490,4ptp4l0-21swapper/023:25:460
134491490,3ptp4l0-21swapper/119:26:351
6925994816,3cyclictest25-21ksoftirqd/120:50:001
134491480,4ptp4l0-21swapper/121:27:061
134491480,4ptp4l0-21swapper/119:33:051
134491480,3ptp4l4412-21memory22:30:200
134491480,3ptp4l0-21swapper/121:54:551
134491480,3ptp4l0-21swapper/023:46:570
692699471,5cyclictest33-21ksoftirqd/200:10:262
692699471,3cyclictest121rcu_preempt21:10:272
6925994720,8cyclictest25-21ksoftirqd/120:30:191
134491470,5ptp4l0-21swapper/019:20:400
134491470,4ptp4l0-21swapper/121:06:131
134491470,4ptp4l0-21swapper/121:06:131
134491470,4ptp4l0-21swapper/022:10:200
134491470,4ptp4l0-21swapper/021:55:200
134491470,12ptp4l0-21swapper/023:13:170
692799461,1cyclictest0-21swapper/322:21:593
6925994617,4cyclictest25-21ksoftirqd/120:52:321
134491460,5ptp4l0-21swapper/020:40:120
134491460,4ptp4l0-21swapper/123:11:041
134491460,4ptp4l0-21swapper/119:22:481
134491460,4ptp4l0-21swapper/021:46:380
134491460,4ptp4l0-21swapper/021:46:380
6925994519,7cyclictest25-21ksoftirqd/122:24:401
134491450,7ptp4l0-21swapper/123:03:041
134491450,7ptp4l0-21swapper/023:56:290
134491450,4ptp4l30921-21df_inode21:10:161
692799441,2cyclictest0-21swapper/323:27:193
6925994439,3cyclictest25-21ksoftirqd/120:00:001
6925994415,4cyclictest25-21ksoftirqd/119:49:541
134491440,4ptp4l0-21swapper/122:28:561
134491440,3ptp4l0-21swapper/122:46:281
134491440,3ptp4l0-21swapper/122:31:401
134491440,3ptp4l0-21swapper/119:35:361
134491430,8ptp4l0-21swapper/000:06:070
134491430,4ptp4l9861-21ls22:40:273
134491430,3ptp4l0-21swapper/020:46:310
134491430,3ptp4l0-21swapper/000:25:330
6925994237,3cyclictest25-21ksoftirqd/123:20:001
6925994214,4cyclictest25-21ksoftirqd/120:41:491
134491420,9ptp4l0-21swapper/022:28:330
134491420,7ptp4l0-21swapper/020:22:280
134491420,4ptp4l18979-21apt-get21:55:023
134491420,4ptp4l0-21swapper/020:51:000
134491420,3ptp4l14441-21apt-get20:35:120
134491420,3ptp4l0-21swapper/120:19:581
6927994111,28cyclictest0-21swapper/319:36:183
6925994135,3cyclictest25-21ksoftirqd/100:40:011
6925994135,3cyclictest25-21ksoftirqd/100:20:001
692599411,9cyclictest25-21ksoftirqd/120:38:001
6925994112,4cyclictest25-21ksoftirqd/123:53:221
134491410,6ptp4l0-21swapper/323:15:233
134491410,5ptp4l30388-21ls00:35:210
134491410,5ptp4l0-21swapper/120:05:161
134491410,5ptp4l0-21swapper/100:00:161
134491410,5ptp4l0-21swapper/022:50:230
134491410,5ptp4l0-21swapper/021:20:130
134491410,4ptp4l7331-21ls22:35:273
134491410,4ptp4l28451-21df_inode19:55:150
134491410,4ptp4l12886-21iostat21:40:201
134491410,4ptp4l0-21swapper/123:31:271
134491410,4ptp4l0-21swapper/122:10:171
134491410,4ptp4l0-21swapper/020:17:280
134491410,3ptp4l7804-21irqstats19:10:150
134491410,3ptp4l761-21hddtemp_smartct20:05:190
134491410,3ptp4l4219-21ls20:10:261
134491410,3ptp4l29280-21apt-get23:25:121
134491410,3ptp4l27073-21apt-get00:30:111
692599405,3cyclictest121rcu_preempt22:40:211
6925994013,7cyclictest25-21ksoftirqd/119:13:591
134491400,5ptp4l6126-21/usr/sbin/munin23:45:213
134491400,5ptp4l0-21swapper/323:35:123
134491400,5ptp4l0-21swapper/321:24:283
134491400,5ptp4l0-21swapper/300:12:313
134491400,5ptp4l0-21swapper/021:25:240
134491400,5ptp4l0-21swapper/020:55:160
134491400,5ptp4l0-21swapper/000:30:110
134491400,4ptp4l9458-21/usr/sbin/munin19:15:273
134491400,4ptp4l19802-21apt-get23:05:113
134491400,4ptp4l0-21swapper/300:00:123
134491400,4ptp4l0-21swapper/121:35:371
134491400,4ptp4l0-21swapper/021:40:040
134491400,4ptp4l0-21swapper/021:36:500
134491400,4ptp4l0-21swapper/021:07:360
134491400,4ptp4l0-21swapper/021:07:360
134491400,3ptp4l9636-21apt-get20:25:120
134491400,3ptp4l2889-21apt-get21:20:121
134491400,3ptp4l22097-21apt-get23:10:133
134491400,3ptp4l21421-21df19:40:150
134491400,3ptp4l21101-21ls00:15:190
134491400,3ptp4l17854-21apt-get00:10:110
6925993934,3cyclictest25-21ksoftirqd/122:40:011
692599392,3cyclictest25-21ksoftirqd/119:40:201
134491390,8ptp4l0-21swapper/323:32:563
134491390,5ptp4l0-21swapper/319:10:073
134491390,5ptp4l0-21swapper/020:10:120
134491390,4ptp4l25401-21meminfo23:15:220
134491390,4ptp4l0-21swapper/323:00:233
134491390,4ptp4l0-21swapper/322:25:223
134491390,4ptp4l0-21swapper/320:56:563
134491390,4ptp4l0-21swapper/320:48:593
134491390,4ptp4l0-21swapper/319:33:063
134491390,4ptp4l0-21swapper/120:24:191
134491390,4ptp4l0-21swapper/100:07:311
134491390,4ptp4l0-21swapper/023:35:520
134491390,4ptp4l0-21swapper/023:06:390
134491390,4ptp4l0-21swapper/022:59:330
134491390,4ptp4l0-21swapper/022:20:110
134491390,4ptp4l0-21swapper/022:05:070
134491390,4ptp4l0-21swapper/021:30:220
134491390,4ptp4l0-21swapper/020:00:210
134491390,4ptp4l0-21swapper/019:35:160
134491390,4ptp4l0-21swapper/000:00:440
134491390,3ptp4l23420-21ls00:20:183
134491390,3ptp4l18020-21ntp_states21:50:230
134491390,3ptp4l11865-21ntp_states23:55:243
6925993833,3cyclictest25-21ksoftirqd/119:15:011
692599381,3cyclictest121rcu_preempt23:45:181
134491380,4ptp4l0-21swapper/323:54:333
134491380,4ptp4l0-21swapper/322:30:283
134491380,4ptp4l0-21swapper/322:02:383
134491380,4ptp4l0-21swapper/321:52:023
134491380,4ptp4l0-21swapper/321:37:583
134491380,4ptp4l0-21swapper/320:17:433
134491380,4ptp4l0-21swapper/319:25:223
134491380,4ptp4l0-21swapper/300:35:293
134491380,4ptp4l0-21swapper/300:25:203
134491380,4ptp4l0-21swapper/300:15:073
134491380,4ptp4l0-21swapper/122:59:431
134491380,4ptp4l0-21swapper/023:51:590
134491380,4ptp4l0-21swapper/023:40:150
134491380,4ptp4l0-21swapper/022:40:530
134491380,3ptp4l0-21swapper/322:10:243
134491380,3ptp4l0-21swapper/300:05:273
6927993731,4cyclictest41-21ksoftirqd/321:00:103
134491370,4ptp4l0-21swapper/322:47:593
134491370,4ptp4l0-21swapper/322:19:343
134491370,4ptp4l0-21swapper/321:41:203
134491370,4ptp4l0-21swapper/321:17:173
134491370,4ptp4l0-21swapper/320:35:063
134491370,4ptp4l0-21swapper/320:11:443
134491370,4ptp4l0-21swapper/320:06:513
134491370,4ptp4l0-21swapper/319:55:293
134491370,4ptp4l0-21swapper/319:42:083
134491370,4ptp4l0-21swapper/123:37:241
134491370,4ptp4l0-21swapper/123:05:411
134491370,4ptp4l0-21swapper/000:20:000
134491370,3ptp4l28216-21timerandwakeup23:20:263
134491370,3ptp4l0-21swapper/323:43:153
134491370,3ptp4l0-21swapper/322:06:103
134491370,3ptp4l0-21swapper/321:47:033
134491370,3ptp4l0-21swapper/321:47:033
134491370,3ptp4l0-21swapper/320:01:443
134491370,3ptp4l0-21swapper/319:23:473
134491370,3ptp4l0-21swapper/023:00:250
134491370,3ptp4l0-21swapper/021:00:030
46198360,4rtkit-daemon0-21swapper/320:31:063
134491360,4ptp4l0-21swapper/322:51:513
134491360,4ptp4l0-21swapper/321:33:133
134491360,4ptp4l0-21swapper/321:12:583
134491360,4ptp4l0-21swapper/300:32:573
134491360,4ptp4l0-21swapper/123:58:091
134491360,3ptp4l0-21swapper/321:05:183
134491360,3ptp4l0-21swapper/321:05:183
134491360,3ptp4l0-21swapper/320:50:443
134491360,3ptp4l0-21swapper/320:20:253
46198350,4rtkit-daemon0-21swapper/319:49:343
134491350,4ptp4l0-21swapper/319:53:413
134491350,3ptp4l0-21swapper/320:28:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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