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2026-09-08 - 23:01
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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 rackdslot1.osadl.org (updated Tue Sep 08, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2384321580,6sleep3481099cyclictest07:50:123
2732421500,5sleep3481099cyclictest09:05:263
134491670,4ptp4l0-21swapper/111:55:261
481099622,32cyclictest0-21swapper/308:08:283
134491620,3ptp4l5964-21apt-get10:40:132
4810996125,4cyclictest41-21ksoftirqd/311:40:143
134491610,4ptp4l0-21swapper/007:25:130
4810996033,8cyclictest41-21ksoftirqd/309:35:163
481099602,33cyclictest0-21swapper/308:25:183
4810995922,4cyclictest41-21ksoftirqd/307:35:163
134491590,5ptp4l0-21swapper/112:10:191
134491590,4ptp4l0-21swapper/209:59:552
481099582,36cyclictest0-21swapper/307:47:353
481099582,32cyclictest0-21swapper/310:46:193
163952580,4sleep30-21swapper/307:34:593
134491580,5ptp4l0-21swapper/211:03:092
481099572,36cyclictest0-21swapper/307:18:273
481099572,36cyclictest0-21swapper/307:18:263
481099572,25cyclictest0-21swapper/312:10:203
481099566,7cyclictest0-21swapper/309:00:223
481099562,35cyclictest0-21swapper/310:14:013
134491560,4ptp4l0-21swapper/110:05:231
134491560,4ptp4l0-21swapper/107:43:351
134491560,3ptp4l0-21swapper/010:29:150
481099553,6cyclictest0-21swapper/311:55:263
481099553,6cyclictest0-21swapper/308:00:143
481099552,35cyclictest0-21swapper/311:35:493
481099552,35cyclictest0-21swapper/310:28:503
134491550,2ptp4l0-21swapper/112:00:261
481099545,6cyclictest0-21swapper/311:14:383
481099543,6cyclictest41-21ksoftirqd/308:30:203
481099543,6cyclictest0-21swapper/311:30:173
481099543,6cyclictest0-21swapper/310:35:243
481099543,6cyclictest0-21swapper/307:55:293
481099542,34cyclictest0-21swapper/308:22:043
134491540,4ptp4l30189-21ntp_states11:30:220
134491540,4ptp4l0-21swapper/008:55:180
134491540,3ptp4l0-21swapper/010:36:060
134491540,13ptp4l0-21swapper/011:05:170
481099535,7cyclictest0-21swapper/312:20:223
481099534,6cyclictest0-21swapper/308:55:373
481099533,6cyclictest0-21swapper/311:45:273
481099532,7cyclictest0-21swapper/308:10:233
134491530,4ptp4l0-21swapper/112:09:071
134491530,12ptp4l0-21swapper/009:25:170
481099525,6cyclictest0-21swapper/309:19:563
481099524,6cyclictest0-21swapper/312:35:463
481099524,6cyclictest0-21swapper/310:42:573
481099524,6cyclictest0-21swapper/309:42:313
481099524,11cyclictest0-21swapper/310:34:143
481099523,6cyclictest0-21swapper/312:33:323
481099522,7cyclictest0-21swapper/309:30:263
481099522,32cyclictest0-21swapper/311:19:173
134491520,8ptp4l3487-21ls07:05:203
134491520,5ptp4l28279-21apt-get09:10:120
134491520,4ptp4l0-21swapper/007:19:550
134491520,4ptp4l0-21swapper/007:19:550
134491520,3ptp4l0-21swapper/211:41:552
134491520,3ptp4l0-21swapper/211:35:302
481099514,6cyclictest0-21swapper/312:28:153
481099514,6cyclictest0-21swapper/311:07:403
481099514,6cyclictest0-21swapper/308:47:073
481099513,6cyclictest0-21swapper/309:46:243
481099513,6cyclictest0-21swapper/307:40:183
481099512,6cyclictest41-21ksoftirqd/308:35:243
481099512,6cyclictest0-21swapper/311:00:253
481099512,6cyclictest0-21swapper/307:10:233
481099511,7cyclictest41-21ksoftirqd/310:55:213
134491510,4ptp4l0-21swapper/012:22:250
134491510,3ptp4l0-21swapper/012:32:310
481099502,29cyclictest0-21swapper/310:53:203
481099502,29cyclictest0-21swapper/310:53:203
134491500,4ptp4l0-21swapper/208:52:322
134491500,4ptp4l0-21swapper/208:52:322
134491500,4ptp4l0-21swapper/009:54:410
134491500,4ptp4l0-21swapper/008:21:330
134491500,4ptp4l0-21swapper/007:50:090
134491500,3ptp4l0-21swapper/007:55:160
481099496,7cyclictest0-21swapper/308:43:343
481099493,6cyclictest0-21swapper/312:00:123
481099492,7cyclictest0-21swapper/311:25:193
481099492,11cyclictest0-21swapper/310:05:253
134491490,8ptp4l0-21swapper/007:36:490
134491490,4ptp4l0-21swapper/207:18:472
134491490,4ptp4l0-21swapper/207:18:472
134491490,4ptp4l0-21swapper/012:15:070
134491490,4ptp4l0-21swapper/008:35:100
134491490,3ptp4l0-21swapper/207:25:092
481099485,6cyclictest0-21swapper/310:18:183
481099483,6cyclictest0-21swapper/309:55:143
481099482,5cyclictest0-21swapper/308:50:213
481099482,5cyclictest0-21swapper/308:50:213
481099482,5cyclictest0-21swapper/308:20:013
481099482,11cyclictest0-21swapper/312:05:183
481099482,11cyclictest0-21swapper/307:25:263
4810994818,10cyclictest41-21ksoftirqd/307:20:283
154312480,6sleep30-21swapper/309:50:193
134491480,4ptp4l0-21swapper/207:06:372
134491480,4ptp4l0-21swapper/108:59:211
134491480,3ptp4l0-21swapper/112:22:301
134491480,3ptp4l0-21swapper/012:35:150
134491480,3ptp4l0-21swapper/008:45:450
134491480,3ptp4l0-21swapper/008:17:340
481099472,6cyclictest0-21swapper/309:12:303
134491470,4ptp4l0-21swapper/210:30:382
134491470,4ptp4l0-21swapper/209:33:132
134491470,4ptp4l0-21swapper/010:22:220
134491470,3ptp4l0-21swapper/209:47:422
481099465,6cyclictest41-21ksoftirqd/312:15:123
481099465,5cyclictest0-21swapper/311:51:133
481099464,6cyclictest0-21swapper/311:21:333
481099461,6cyclictest41-21ksoftirqd/310:00:153
481099461,6cyclictest41-21ksoftirqd/310:00:153
134491460,4ptp4l14263-21apt-get07:30:162
134491460,3ptp4l0-21swapper/210:49:442
134491460,3ptp4l0-21swapper/010:15:250
481099455,5cyclictest0-21swapper/310:23:393
481099454,6cyclictest0-21swapper/309:21:373
134491450,9ptp4l0-21swapper/209:44:482
134491450,5ptp4l5472-21cpuspeed_turbos09:30:150
134491450,4ptp4l30578-21apt-get09:15:121
134491450,4ptp4l0-21swapper/212:05:022
134491440,9ptp4l0-21swapper/009:39:570
134491440,4ptp4l3641-21apt-get10:35:151
134491440,4ptp4l2318-21gnome-shell09:42:591
134491440,3ptp4l0-21swapper/010:49:540
134491440,10ptp4l0-21swapper/108:38:541
481099434,5cyclictest0-21swapper/309:28:313
134491430,9ptp4l0-21swapper/212:35:572
134491430,9ptp4l0-21swapper/211:49:172
134491430,9ptp4l0-21swapper/207:49:362
134491430,5ptp4l0-21swapper/009:55:270
134491430,4ptp4l0-21swapper/212:03:352
134491430,10ptp4l0-21swapper/010:52:290
134491430,10ptp4l0-21swapper/010:52:290
4808994236,3cyclictest25-21ksoftirqd/108:00:001
134491420,8ptp4l0-21swapper/212:31:302
134491420,8ptp4l0-21swapper/210:25:542
134491420,8ptp4l0-21swapper/209:29:152
134491420,8ptp4l0-21swapper/208:33:172
134491420,6ptp4l0-21swapper/107:09:011
134491420,5ptp4l0-21swapper/009:15:130
134491420,4ptp4l9334-21users09:35:301
134491420,4ptp4l2700-21ls10:30:301
134491420,4ptp4l25986-21apt-get09:05:122
134491420,4ptp4l16891-21apt-get09:55:011
134491420,4ptp4l13800-21memory12:05:200
134491420,4ptp4l0-21swapper/009:45:590
134491420,4ptp4l0-21swapper/009:02:020
134491420,3ptp4l10650-21irqstats08:30:171
4808994136,3cyclictest25-21ksoftirqd/109:15:001
134491410,5ptp4l0-21swapper/008:05:140
134491410,5ptp4l0-21swapper/007:09:000
134491410,4ptp4l9180-21meminfo11:55:200
134491410,4ptp4l8256-21apt-get10:45:121
134491410,4ptp4l4209-21iostat_ios11:45:190
134491410,4ptp4l23273-21apt-get07:50:021
134491410,4ptp4l19501-21hddtemp_smartct08:50:151
134491410,4ptp4l19501-21hddtemp_smartct08:50:151
134491410,4ptp4l16611-21apt-get07:35:121
134491410,4ptp4l15378-21memory08:40:230
134491410,4ptp4l0-21swapper/210:05:592
134491410,4ptp4l0-21swapper/109:53:221
134491410,4ptp4l0-21swapper/010:55:150
134491410,4ptp4l0-21swapper/010:30:160
134491410,3ptp4l8234-21apt-get11:55:122
134491410,3ptp4l25223-21memory10:10:250
134491410,3ptp4l0-21swapper/011:54:220
134491410,3ptp4l0-21swapper/007:46:400
4808994034,3cyclictest25-21ksoftirqd/109:30:001
134491400,8ptp4l0-21swapper/209:21:312
134491400,6ptp4l0-21swapper/207:53:582
134491400,5ptp4l5551-21sshd10:38:212
134491400,5ptp4l0-21swapper/210:53:252
134491400,5ptp4l0-21swapper/210:53:252
134491400,5ptp4l0-21swapper/112:18:081
134491400,5ptp4l0-21swapper/011:19:380
134491400,5ptp4l0-21swapper/009:40:220
134491400,4ptp4l29844-21ls08:00:270
134491400,4ptp4l21483-21users11:10:270
134491400,4ptp4l21337-21users10:00:270
134491400,4ptp4l21337-21users10:00:270
134491400,4ptp4l14732-21diskstats08:40:171
134491400,4ptp4l12094-21/usr/sbin/munin08:35:152
134491400,4ptp4l0-21swapper/212:25:112
134491400,4ptp4l0-21swapper/211:16:362
134491400,4ptp4l0-21swapper/211:07:132
134491400,4ptp4l0-21swapper/208:44:472
134491400,4ptp4l0-21swapper/207:58:442
134491400,4ptp4l0-21swapper/207:10:252
134491400,4ptp4l0-21swapper/111:00:581
134491400,4ptp4l0-21swapper/110:20:101
134491400,4ptp4l0-21swapper/110:11:561
134491400,4ptp4l0-21swapper/108:45:181
134491400,4ptp4l0-21swapper/108:25:171
134491400,4ptp4l0-21swapper/108:00:051
134491400,4ptp4l0-21swapper/107:15:201
134491400,4ptp4l0-21swapper/107:15:201
134491400,4ptp4l0-21swapper/012:25:240
134491400,4ptp4l0-21swapper/011:20:110
134491400,4ptp4l0-21swapper/011:00:210
134491400,4ptp4l0-21swapper/010:05:390
134491400,4ptp4l0-21swapper/008:55:000
134491400,4ptp4l0-21swapper/008:55:000
134491400,4ptp4l0-21swapper/007:20:280
134491400,3ptp4l7725-21df08:25:150
134491400,3ptp4l6533-21iostat_ios10:40:190
134491400,3ptp4l6243-21df_inode11:50:131
134491400,3ptp4l31760-21ntp_states08:05:232
134491400,3ptp4l26193-21df09:05:141
134491400,3ptp4l24839-21hddtemp_smartct12:30:151
134491400,3ptp4l20760-21meminfo11:10:191
134491400,3ptp4l1611-21ntp_states09:20:241
134491400,3ptp4l13063-21iostat_ios09:45:201
134491400,3ptp4l10764-21df10:50:141
134491400,3ptp4l10764-21df10:50:141
134491400,3ptp4l0-21swapper/112:38:551
4808993934,3cyclictest25-21ksoftirqd/111:25:181
134491390,5ptp4l3622-21chrt11:45:101
134491390,5ptp4l19908-21missed_timers07:40:210
134491390,4ptp4l0-21swapper/212:20:282
134491390,4ptp4l0-21swapper/212:15:392
134491390,4ptp4l0-21swapper/212:10:262
134491390,4ptp4l0-21swapper/211:52:412
134491390,4ptp4l0-21swapper/211:25:122
134491390,4ptp4l0-21swapper/211:10:202
134491390,4ptp4l0-21swapper/210:20:082
134491390,4ptp4l0-21swapper/210:15:532
134491390,4ptp4l0-21swapper/210:01:082
134491390,4ptp4l0-21swapper/210:01:082
134491390,4ptp4l0-21swapper/209:37:192
134491390,4ptp4l0-21swapper/209:18:332
134491390,4ptp4l0-21swapper/209:10:062
134491390,4ptp4l0-21swapper/208:48:122
134491390,4ptp4l0-21swapper/208:27:172
134491390,4ptp4l0-21swapper/208:20:172
134491390,4ptp4l0-21swapper/208:10:192
134491390,4ptp4l0-21swapper/207:20:592
134491390,4ptp4l0-21swapper/111:35:211
134491390,4ptp4l0-21swapper/111:31:231
134491390,4ptp4l0-21swapper/111:20:161
134491390,4ptp4l0-21swapper/111:19:151
134491390,4ptp4l0-21swapper/110:00:171
134491390,4ptp4l0-21swapper/110:00:171
134491390,4ptp4l0-21swapper/109:35:011
134491390,4ptp4l0-21swapper/109:00:151
134491390,4ptp4l0-21swapper/108:14:511
134491390,4ptp4l0-21swapper/107:46:331
134491390,4ptp4l0-21swapper/012:10:330
134491390,4ptp4l0-21swapper/012:01:060
134491390,4ptp4l0-21swapper/011:42:160
134491390,4ptp4l0-21swapper/011:28:060
134491390,4ptp4l0-21swapper/008:13:280
134491390,4ptp4l0-21swapper/007:10:210
134491390,3ptp4l6174-21df10:40:151
134491390,3ptp4l31482-21diskstats10:25:141
134491390,3ptp4l15982-21/usr/sbin/munin07:30:310
134491390,3ptp4l0-21swapper/112:25:041
134491390,2ptp4l27026-21strings09:05:220
134491390,10ptp4l0-21swapper/211:20:482
134491380,4ptp4l0-21swapper/211:30:452
134491380,4ptp4l0-21swapper/210:59:172
134491380,4ptp4l0-21swapper/210:10:182
134491380,4ptp4l0-21swapper/209:54:082
134491380,4ptp4l0-21swapper/208:55:312
134491380,4ptp4l0-21swapper/208:15:152
134491380,4ptp4l0-21swapper/207:43:522
134491380,4ptp4l0-21swapper/110:56:141
134491380,4ptp4l0-21swapper/110:18:341
134491380,4ptp4l0-21swapper/108:05:261
134491380,4ptp4l0-21swapper/107:33:281
134491380,4ptp4l0-21swapper/107:26:201
134491380,4ptp4l0-21swapper/107:12:411
134491380,4ptp4l0-21swapper/011:35:230
134491380,4ptp4l0-21swapper/009:23:300
134491380,4ptp4l0-21swapper/008:30:180
134491380,3ptp4l6653-21ssh08:20:281
134491380,3ptp4l0-21swapper/208:00:172
134491380,3ptp4l0-21swapper/111:41:091
134491370,4ptp4l9875-21cut07:20:181
134491370,4ptp4l0-21swapper/207:35:312
134491370,4ptp4l0-21swapper/108:17:261
134491370,3ptp4l0-21swapper/209:01:342
134491360,3ptp4l0-21swapper/111:05:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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