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2026-03-17 - 18:17
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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 Tue Mar 17, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
592699812,3cyclictest0-21swapper/210:55:292
592599617,52cyclictest15577-21kworker/1:211:30:291
134491610,5ptp4l0-21swapper/012:31:330
134491610,2ptp4l0-21swapper/008:55:130
134491600,3ptp4l11565-21sed08:30:203
592699591,55cyclictest0-21swapper/210:41:292
592699591,55cyclictest0-21swapper/210:41:292
592599597,11cyclictest0-21swapper/111:57:371
592599597,10cyclictest0-21swapper/109:27:331
592699582,54cyclictest0-21swapper/210:39:092
592599583,18cyclictest134491ptp4l10:39:341
134491580,18ptp4l0-21swapper/307:35:273
592699572,53cyclictest0-21swapper/211:00:292
134691570,12getstats0-21swapper/311:48:403
134491570,4ptp4l0-21swapper/311:26:533
134491570,4ptp4l0-21swapper/211:08:142
134491570,4ptp4l0-21swapper/010:50:140
134491570,4ptp4l0-21swapper/010:19:260
134491570,3ptp4l0-21swapper/312:34:053
134491570,3ptp4l0-21swapper/208:07:402
134491560,19ptp4l1301-21snmpd07:52:060
134491560,12ptp4l0-21swapper/312:10:203
592599556,11cyclictest0-21swapper/109:18:511
592599556,10cyclictest0-21swapper/111:26:121
134491550,5ptp4l0-21swapper/011:51:460
134491550,4ptp4l0-21swapper/311:42:403
134491550,4ptp4l0-21swapper/010:44:420
134491550,4ptp4l0-21swapper/010:44:420
134491550,3ptp4l0-21swapper/210:22:492
134491550,2ptp4l0-21swapper/310:20:243
592599548,5cyclictest0-21swapper/108:56:361
592599546,10cyclictest15103-21switchtime12:05:271
592599542,10cyclictest9253-21missed_timers07:15:201
134491540,4ptp4l0-21swapper/010:07:290
134491540,4ptp4l0-21swapper/009:29:540
134491540,4ptp4l0-21swapper/007:34:160
134491540,4ptp4l0-21swapper/007:14:580
134491540,3ptp4l0-21swapper/207:45:552
592699531,51cyclictest0-21swapper/209:43:092
592699531,51cyclictest0-21swapper/209:43:092
592599536,10cyclictest0-21swapper/111:22:271
134491530,4ptp4l0-21swapper/009:35:190
134491530,4ptp4l0-21swapper/008:35:430
134491530,3ptp4l0-21swapper/311:10:353
134491530,3ptp4l0-21swapper/307:10:243
592599527,11cyclictest0-21swapper/110:00:351
592599525,10cyclictest28696-21sed09:05:271
134491520,4ptp4l0-21swapper/311:35:023
134491520,4ptp4l0-21swapper/308:19:553
134491520,3ptp4l0-21swapper/009:02:110
134491520,13ptp4l0-21swapper/009:40:240
134491520,13ptp4l0-21swapper/009:40:240
592599518,12cyclictest0-21swapper/109:34:481
592599514,10cyclictest16833-21systemctl08:40:241
134491510,4ptp4l0-21swapper/312:22:313
134491510,4ptp4l0-21swapper/309:45:593
134491510,4ptp4l0-21swapper/307:55:543
134491510,4ptp4l0-21swapper/012:36:420
134491510,4ptp4l0-21swapper/007:38:050
134491510,2ptp4l0-21swapper/010:47:170
592599508,6cyclictest0-21swapper/107:38:301
592599507,12cyclictest0-21swapper/107:22:491
592599506,11cyclictest0-21swapper/111:52:001
134491500,9ptp4l5257-21users07:05:261
134491500,4ptp4l0-21swapper/012:28:580
134491500,4ptp4l0-21swapper/011:18:110
134491500,3ptp4l0-21swapper/008:09:460
134491500,3ptp4l0-21swapper/007:21:150
134491500,12ptp4l0-21swapper/009:51:230
592699492,45cyclictest20072-21kworker/2:008:12:082
592599496,7cyclictest24707-21apt-get10:10:031
592599496,7cyclictest24707-21apt-get10:10:031
592599496,10cyclictest0-21swapper/109:54:331
592599494,6cyclictest137891phc2sys08:00:141
592599492,10cyclictest0-21swapper/108:45:131
134491490,6ptp4l5089-21ls07:05:260
592699483,44cyclictest0-21swapper/212:10:292
592699483,43cyclictest0-21swapper/211:10:182
592699482,44cyclictest0-21swapper/212:20:592
592699482,44cyclictest0-21swapper/208:15:192
592599487,11cyclictest0-21swapper/110:59:561
592599486,11cyclictest0-21swapper/111:12:201
592599483,10cyclictest24432-21awk11:15:281
134491480,4ptp4l0-21swapper/009:56:310
134491480,2ptp4l0-21swapper/011:34:150
592599476,8cyclictest23087-21hddtemp_smartct10:05:151
592599476,10cyclictest0-21swapper/112:25:441
592599474,7cyclictest2154-21apt-get11:40:121
134491470,4ptp4l0-21swapper/308:27:233
134491470,12ptp4l1301-21snmpd07:12:002
592699462,43cyclictest0-21swapper/212:26:192
134491460,15ptp4l0-21swapper/308:02:393
592699451,41cyclictest11504-21iostat_ios08:30:192
592599456,7cyclictest23455-21ntpq07:45:221
134491450,4ptp4l0-21swapper/312:17:273
134491450,3ptp4l0-21swapper/311:03:153
134491450,3ptp4l0-21swapper/308:48:153
134491450,3ptp4l0-21swapper/010:23:380
134491450,10ptp4l7975-21runrttasks09:30:402
592699443,40cyclictest0-21swapper/211:27:592
592699443,39cyclictest0-21swapper/212:07:592
134491440,5ptp4l0-21swapper/311:30:103
134491440,4ptp4l0-21swapper/009:32:340
134491440,3ptp4l0-21swapper/107:10:581
134491440,2ptp4l0-21swapper/109:10:261
134491440,10ptp4l0-21swapper/209:47:352
592599437,10cyclictest0-21swapper/108:23:071
5925994317,24cyclictest0-21swapper/112:34:281
134491430,9ptp4l0-21swapper/211:20:052
134491430,8ptp4l0-21swapper/209:11:442
134491430,4ptp4l22804-21apt-get11:15:133
134491430,4ptp4l0-21swapper/312:35:113
134491430,4ptp4l0-21swapper/307:54:413
134491430,4ptp4l0-21swapper/307:20:053
134491430,4ptp4l0-21swapper/007:16:120
134491430,1ptp4l0-21swapper/211:50:262
134491430,10ptp4l0-21swapper/307:30:193
134491430,10ptp4l0-21swapper/211:57:542
134491430,10ptp4l0-21swapper/210:31:262
134491430,10ptp4l0-21swapper/009:22:290
592599425,8cyclictest16323-21ls07:30:211
592599425,5cyclictest0-21swapper/108:27:331
134491420,9ptp4l0-21swapper/208:49:532
134491420,8ptp4l0-21swapper/110:20:181
134491420,5ptp4l20719-21iostat_ios10:00:160
134491420,5ptp4l0-21swapper/011:45:140
134491420,4ptp4l21000-21meminfo07:40:200
134491420,4ptp4l1616-21apt-get09:20:121
134491420,4ptp4l14697-21meminfo12:05:213
134491420,4ptp4l0-21swapper/312:25:043
134491420,3ptp4l20079-21/usr/sbin/munin10:00:272
134491410,6ptp4l4880-21interrupts10:35:163
134491410,5ptp4l15416-21users12:05:290
134491410,5ptp4l0-21swapper/212:30:252
134491410,5ptp4l0-21swapper/112:00:201
134491410,5ptp4l0-21swapper/110:25:201
134491410,5ptp4l0-21swapper/009:45:200
134491410,4ptp4l7214-21iostat10:40:173
134491410,4ptp4l7214-21iostat10:40:173
134491410,4ptp4l18792-21ntp_states07:35:232
134491410,4ptp4l14349-21ntp_states08:35:233
134491410,4ptp4l14136-21meminfo09:45:221
134491410,4ptp4l13230-21apt-get08:35:121
134491410,4ptp4l13073-21/usr/sbin/munin07:25:150
134491410,4ptp4l0-21swapper/310:57:593
134491410,4ptp4l0-21swapper/310:11:073
134491410,4ptp4l0-21swapper/310:11:063
134491410,4ptp4l0-21swapper/211:45:122
134491410,3ptp4l3599-21ls10:30:270
134491410,3ptp4l17778-21apt-get09:55:121
134491410,3ptp4l0-21swapper/108:15:271
134491410,3ptp4l0-21swapper/011:11:390
5926994014,23cyclictest28229-21sh09:05:232
592599405,7cyclictest0-21swapper/107:57:591
134491400,6ptp4l0-21swapper/008:04:010
134491400,5ptp4l6118-1kworker/0:1H09:10:140
134491400,5ptp4l0-21swapper/307:16:593
134491400,5ptp4l0-21swapper/211:31:382
134491400,5ptp4l0-21swapper/210:50:162
134491400,5ptp4l0-21swapper/110:15:231
134491400,5ptp4l0-21swapper/108:10:261
134491400,5ptp4l0-21swapper/009:15:180
134491400,4ptp4l13657-21hddtemp_smartct08:35:152
134491400,4ptp4l11066-21apt-get11:59:050
134491400,4ptp4l0-21swapper/311:55:213
134491400,4ptp4l0-21swapper/310:05:013
134491400,4ptp4l0-21swapper/309:53:003
134491400,4ptp4l0-21swapper/309:05:243
134491400,4ptp4l0-21swapper/308:12:153
134491400,4ptp4l0-21swapper/210:08:082
134491400,4ptp4l0-21swapper/209:35:222
134491400,4ptp4l0-21swapper/208:51:052
134491400,4ptp4l0-21swapper/208:25:272
134491400,4ptp4l0-21swapper/207:40:192
134491400,4ptp4l0-21swapper/110:35:001
134491400,4ptp4l0-21swapper/107:53:071
134491400,4ptp4l0-21swapper/012:20:130
134491400,4ptp4l0-21swapper/011:39:290
134491400,4ptp4l0-21swapper/011:01:590
134491400,4ptp4l0-21swapper/010:38:260
134491400,4ptp4l0-21swapper/010:25:250
134491400,3ptp4l4917-21ntp_states08:15:230
134491400,3ptp4l32395-21irqstats08:05:181
134491400,3ptp4l23468-21ntp_states07:45:233
134491400,3ptp4l15546-21apt-get08:40:112
134491400,3ptp4l12560-21ntp_states12:00:232
134491400,3ptp4l10887-21apt-get09:40:111
134491400,3ptp4l10887-21apt-get09:40:111
5926993911,27cyclictest0-21swapper/207:28:382
592599398,28cyclictest0-21swapper/109:35:191
134491390,5ptp4l0-21swapper/308:05:243
134491390,5ptp4l0-21swapper/307:40:143
134491390,5ptp4l0-21swapper/111:00:191
134491390,5ptp4l0-21swapper/108:30:281
134491390,4ptp4l6115-21/usr/sbin/munin08:20:122
134491390,4ptp4l12637-21apt-get07:25:033
134491390,4ptp4l0-21swapper/312:02:443
134491390,4ptp4l0-21swapper/311:54:483
134491390,4ptp4l0-21swapper/311:05:153
134491390,4ptp4l0-21swapper/310:26:253
134491390,4ptp4l0-21swapper/310:18:463
134491390,4ptp4l0-21swapper/310:04:483
134491390,4ptp4l0-21swapper/309:57:023
134491390,4ptp4l0-21swapper/309:40:043
134491390,4ptp4l0-21swapper/309:40:043
134491390,4ptp4l0-21swapper/309:10:183
134491390,4ptp4l0-21swapper/308:41:193
134491390,4ptp4l0-21swapper/212:35:212
134491390,4ptp4l0-21swapper/212:15:112
134491390,4ptp4l0-21swapper/211:17:302
134491390,4ptp4l0-21swapper/210:45:272
134491390,4ptp4l0-21swapper/210:25:132
134491390,4ptp4l0-21swapper/210:19:102
134491390,4ptp4l0-21swapper/210:10:152
134491390,4ptp4l0-21swapper/210:10:152
134491390,4ptp4l0-21swapper/209:55:442
134491390,4ptp4l0-21swapper/209:54:252
134491390,4ptp4l0-21swapper/209:25:342
134491390,4ptp4l0-21swapper/209:22:272
134491390,4ptp4l0-21swapper/209:15:172
134491390,4ptp4l0-21swapper/208:57:302
134491390,4ptp4l0-21swapper/207:31:302
134491390,4ptp4l0-21swapper/112:35:201
134491390,4ptp4l0-21swapper/111:35:141
134491390,4ptp4l0-21swapper/111:05:191
134491390,4ptp4l0-21swapper/108:50:121
134491390,4ptp4l0-21swapper/107:27:101
134491390,4ptp4l0-21swapper/012:02:340
134491390,4ptp4l0-21swapper/010:57:200
134491390,4ptp4l0-21swapper/009:05:180
134491390,4ptp4l0-21swapper/008:50:180
134491390,4ptp4l0-21swapper/008:33:050
134491390,4ptp4l0-21swapper/008:24:090
134491390,4ptp4l0-21swapper/008:13:560
134491390,3ptp4l26479-21users09:00:281
134491390,3ptp4l19755-21ls12:15:241
134491390,3ptp4l19723-21ls11:05:270
134491390,3ptp4l15851-21df_inode08:40:140
134491390,3ptp4l121rcu_preempt07:57:072
134491390,3ptp4l0-21swapper/011:28:350
134491390,3ptp4l0-21swapper/007:49:370
134491390,1ptp4l0-21swapper/207:18:232
134491380,4ptp4l6562-21hddtemp_smartct08:20:163
134491380,4ptp4l0-21swapper/310:50:173
134491380,4ptp4l0-21swapper/309:39:503
134491380,4ptp4l0-21swapper/309:26:443
134491380,4ptp4l0-21swapper/309:18:203
134491380,4ptp4l0-21swapper/309:02:043
134491380,4ptp4l0-21swapper/308:55:063
134491380,4ptp4l0-21swapper/211:35:012
134491380,4ptp4l0-21swapper/209:02:032
134491380,4ptp4l0-21swapper/207:21:432
134491380,4ptp4l0-21swapper/110:50:111
134491380,4ptp4l0-21swapper/110:40:041
134491380,4ptp4l0-21swapper/110:40:041
134491380,4ptp4l0-21swapper/107:44:371
134491380,4ptp4l0-21swapper/012:16:300
134491380,4ptp4l0-21swapper/011:40:160
134491380,4ptp4l0-21swapper/011:20:170
134491380,4ptp4l0-21swapper/008:25:420
134491380,4ptp4l0-21swapper/007:55:190
134491380,3ptp4l0-21swapper/211:40:232
134491380,3ptp4l0-21swapper/207:50:142
134491380,3ptp4l0-21swapper/112:14:241
134491380,3ptp4l0-21swapper/110:45:101
134491380,3ptp4l0-21swapper/012:14:230
134491380,2ptp4l24994-21gpgv10:10:020
134491380,2ptp4l24994-21gpgv10:10:020
134491380,2ptp4l0-21swapper/008:45:150
592599375,8cyclictest0-21swapper/111:48:311
134491370,4ptp4l0-21swapper/311:20:143
134491370,4ptp4l0-21swapper/310:47:213
134491370,4ptp4l0-21swapper/310:32:563
134491370,4ptp4l0-21swapper/309:33:183
134491370,4ptp4l0-21swapper/112:23:361
134491370,3ptp4l0-21swapper/308:50:403
134491370,3ptp4l0-21swapper/208:00:132
134491350,3ptp4l0-21swapper/309:20:343
35732243,11sleep23588-21apt-get07:05:122
35912202,10sleep30-21swapper/307:05:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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