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2026-04-24 - 00:56
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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 Thu Apr 23, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
162232760,5sleep20-21swapper/207:30:242
569299743,3cyclictest0-21swapper/209:55:142
134491710,4ptp4l0-21swapper/007:39:540
255792690,6sleep1569199cyclictest12:30:131
102832620,3sleep20-21swapper/211:55:202
134491610,25ptp4l25-21ksoftirqd/110:45:221
134491610,18ptp4l13580-21latency_hist10:55:000
134491600,4ptp4l0-21swapper/310:20:243
134491600,4ptp4l0-21swapper/307:12:443
134491600,4ptp4l0-21swapper/307:12:443
134491590,4ptp4l0-21swapper/108:45:191
134491580,3ptp4l0-21swapper/108:50:251
134491570,3ptp4l0-21swapper/312:17:213
134491570,3ptp4l0-21swapper/310:00:163
134491560,4ptp4l0-21swapper/009:44:000
134491550,4ptp4l0-21swapper/008:16:390
134491550,4ptp4l0-21swapper/007:48:360
134491550,3ptp4l0-21swapper/208:11:572
134491540,4ptp4l0-21swapper/012:15:160
134491540,3ptp4l0-21swapper/212:00:012
134491530,4ptp4l0-21swapper/011:23:570
134491530,4ptp4l0-21swapper/009:55:030
134491520,3ptp4l0-21swapper/008:29:550
134491520,2ptp4l0-21swapper/010:19:500
134491500,4ptp4l569099cyclictest08:00:270
134491500,3ptp4l0-21swapper/012:25:140
569299491,3cyclictest18248-21hddtemp_smartct08:45:172
134491490,5ptp4l0-21swapper/107:05:401
134491490,5ptp4l0-21swapper/007:05:120
134491490,3ptp4l0-21swapper/011:25:240
134491480,8ptp4l0-21swapper/311:05:073
134491480,4ptp4l0-21swapper/211:09:012
134491480,3ptp4l121rcu_preempt07:57:143
134491480,3ptp4l0-21swapper/007:20:230
134491480,10ptp4l0-21swapper/012:20:140
5692994729,15cyclictest33-21ksoftirqd/210:05:112
134691470,12getstats0-21swapper/109:09:271
134491470,4ptp4l23164-21apt-get12:25:122
134491470,4ptp4l0-21swapper/011:46:590
134491470,3ptp4l0-21swapper/209:05:062
5693994641,3cyclictest17575-21cron08:45:013
134491460,5ptp4l0-21swapper/308:05:203
134491460,5ptp4l0-21swapper/107:45:181
134491460,4ptp4l0-21swapper/208:50:042
134491460,4ptp4l0-21swapper/108:03:591
134491460,3ptp4l0-21swapper/212:21:082
134491460,3ptp4l0-21swapper/211:51:372
134491460,3ptp4l0-21swapper/109:34:091
5692994527,16cyclictest33-21ksoftirqd/211:20:112
134491450,5ptp4l0-21swapper/308:35:193
134491450,4ptp4l16193-21apt-get12:10:100
134491450,4ptp4l0-21swapper/007:10:250
134491450,4ptp4l0-21swapper/007:10:250
134491450,3ptp4l0-21swapper/308:53:163
134491450,3ptp4l0-21swapper/111:23:321
134491450,3ptp4l0-21swapper/108:43:421
134491440,9ptp4l0-21swapper/108:25:161
134491440,5ptp4l0-21swapper/309:20:213
134491440,5ptp4l0-21swapper/008:05:150
134491440,4ptp4l2318-21gnome-shell11:42:590
134491440,4ptp4l0-21swapper/010:08:380
134491440,4ptp4l0-21swapper/007:50:290
134491440,3ptp4l0-21swapper/207:24:282
569299431,4cyclictest16990-21ntp_states09:50:232
46198430,4rtkit-daemon0-21swapper/009:29:510
134491430,9ptp4l0-21swapper/112:14:191
134491430,7ptp4l2325-21llvmpipe-210:41:590
134491430,6ptp4l1301-21snmpd07:37:353
134491430,5ptp4l8578-21/usr/sbin/munin07:15:190
134491430,5ptp4l18025-21df08:45:140
134491430,5ptp4l0-21swapper/310:30:133
134491430,5ptp4l0-21swapper/309:45:233
134491430,5ptp4l0-21swapper/308:10:203
134491430,5ptp4l0-21swapper/210:20:202
134491430,5ptp4l0-21swapper/011:10:100
134491430,5ptp4l0-21swapper/007:30:140
134491430,4ptp4l3990-21apt-get08:15:152
134491430,4ptp4l2781-21iostat10:30:160
134491430,4ptp4l26696-21apt-get07:55:121
134491430,3ptp4l26287-21ls10:10:182
134491430,3ptp4l10907-21apt-get08:30:113
134491430,3ptp4l0-21swapper/209:19:402
134491430,3ptp4l0-21swapper/208:00:182
134491430,3ptp4l0-21swapper/107:51:041
134491420,7ptp4l12188-21wc09:40:203
134491420,5ptp4l5454-21ls07:10:001
134491420,5ptp4l5454-21ls07:10:001
134491420,5ptp4l14519-21ls09:45:200
134491420,5ptp4l0-21swapper/311:40:033
134491420,5ptp4l0-21swapper/309:50:193
134491420,5ptp4l0-21swapper/308:15:023
134491420,5ptp4l0-21swapper/207:35:192
134491420,5ptp4l0-21swapper/010:45:140
134491420,5ptp4l0-21swapper/009:50:180
134491420,4ptp4l7957-21ntp_states10:40:223
134491420,4ptp4l7224-21ls07:10:272
134491420,4ptp4l7224-21ls07:10:272
134491420,4ptp4l5636-21meminfo11:45:211
134491420,4ptp4l31834-21diskstats08:05:152
134491420,4ptp4l27003-21diskstats07:55:160
134491420,4ptp4l23671-21ls07:45:252
134491420,4ptp4l23364-21diskstats10:05:141
134491420,4ptp4l20943-21diskstats11:10:143
134491420,4ptp4l18774-21hddtemp_smartct11:05:171
134491420,4ptp4l14329-21hddtemp_smartct12:05:161
134491420,4ptp4l13728-21apt-get10:55:122
134491420,4ptp4l10079-21ntp_states09:35:233
134491420,4ptp4l0-21swapper/308:45:153
134491420,4ptp4l0-21swapper/307:50:263
134491420,4ptp4l0-21swapper/307:15:243
134491420,4ptp4l0-21swapper/110:42:091
134491420,4ptp4l0-21swapper/108:10:121
134491420,4ptp4l0-21swapper/107:16:481
134491420,4ptp4l0-21swapper/011:39:590
134491420,4ptp4l0-21swapper/008:10:150
134491420,3ptp4l23930-21ls11:15:201
134491420,3ptp4l2318-21gnome-shell10:38:580
134491420,3ptp4l2318-21gnome-shell10:38:580
134491420,3ptp4l0-21swapper/108:20:001
134491410,6ptp4l0-21swapper/312:30:133
134491410,6ptp4l0-21swapper/011:05:500
134491410,5ptp4l30745-21irqstats11:30:180
134491410,5ptp4l20698-21apt10:00:111
134491410,5ptp4l18232-21latency_hist11:05:011
134491410,5ptp4l0-21swapper/310:50:223
134491410,5ptp4l0-21swapper/208:20:222
134491410,5ptp4l0-21swapper/208:20:222
134491410,5ptp4l0-21swapper/107:25:141
134491410,5ptp4l0-21swapper/009:30:180
134491410,4ptp4l9491-21df11:55:130
134491410,4ptp4l6439-21turbostat09:30:003
134491410,4ptp4l20797-21/usr/sbin/munin12:20:173
134491410,4ptp4l17164-21ntp_states11:00:230
134491410,4ptp4l11858-21meminfo08:30:192
134491410,4ptp4l0-21swapper/312:12:593
134491410,4ptp4l0-21swapper/310:05:253
134491410,4ptp4l0-21swapper/210:50:122
134491410,4ptp4l0-21swapper/110:58:431
134491410,4ptp4l0-21swapper/107:30:281
134491410,4ptp4l0-21swapper/010:55:240
134491410,4ptp4l0-21swapper/010:10:420
134491410,4ptp4l0-21swapper/009:20:180
134491410,4ptp4l0-21swapper/008:20:140
134491410,4ptp4l0-21swapper/008:20:140
134491410,4ptp4l0-21swapper/007:44:090
134491410,4ptp4l0-21swapper/007:28:030
134491410,3ptp4l29175-21ls12:35:260
134491410,3ptp4l14314-21ntp_states08:35:210
134491400,5ptp4l0-21swapper/312:35:193
134491400,5ptp4l0-21swapper/312:00:113
134491400,5ptp4l0-21swapper/311:00:223
134491400,5ptp4l0-21swapper/310:55:133
134491400,5ptp4l0-21swapper/307:30:013
134491400,5ptp4l0-21swapper/307:20:063
134491400,5ptp4l0-21swapper/211:35:552
134491400,5ptp4l0-21swapper/010:22:350
134491400,5ptp4l0-21swapper/010:00:130
134491400,5ptp4l0-21swapper/009:35:160
134491400,4ptp4l729-21/usr/sbin/munin09:15:231
134491400,4ptp4l7098-21hddtemp_smartct09:30:162
134491400,4ptp4l23302-21irqstats08:55:170
134491400,4ptp4l13756-21ntp_states07:25:242
134491400,4ptp4l0-21swapper/312:05:193
134491400,4ptp4l0-21swapper/311:45:143
134491400,4ptp4l0-21swapper/310:45:183
134491400,4ptp4l0-21swapper/310:35:153
134491400,4ptp4l0-21swapper/310:35:153
134491400,4ptp4l0-21swapper/309:15:133
134491400,4ptp4l0-21swapper/309:00:183
134491400,4ptp4l0-21swapper/308:28:383
134491400,4ptp4l0-21swapper/308:05:003
134491400,4ptp4l0-21swapper/307:45:223
134491400,4ptp4l0-21swapper/307:40:243
134491400,4ptp4l0-21swapper/307:29:213
134491400,4ptp4l0-21swapper/211:10:182
134491400,4ptp4l0-21swapper/210:40:102
134491400,4ptp4l0-21swapper/210:25:242
134491400,4ptp4l0-21swapper/209:45:172
134491400,4ptp4l0-21swapper/207:50:172
134491400,4ptp4l0-21swapper/207:15:262
134491400,4ptp4l0-21swapper/111:53:151
134491400,4ptp4l0-21swapper/110:35:121
134491400,4ptp4l0-21swapper/110:35:121
134491400,4ptp4l0-21swapper/110:15:221
134491400,4ptp4l0-21swapper/012:30:200
134491400,4ptp4l0-21swapper/012:05:240
134491400,4ptp4l0-21swapper/009:19:480
134491400,4ptp4l0-21swapper/008:53:200
134491400,3ptp4l785-21memory10:25:200
134491400,3ptp4l25879-21perl12:30:152
134491400,3ptp4l12408-21ls08:30:260
134491400,3ptp4l0-21swapper/107:40:011
134491390,5ptp4l12607-21cat12:00:210
134491390,5ptp4l0-21swapper/311:30:173
134491390,5ptp4l0-21swapper/309:30:173
134491390,5ptp4l0-21swapper/112:35:131
134491390,4ptp4l8605-21chrt08:25:112
134491390,4ptp4l28524-21sed11:25:191
134491390,4ptp4l25804-21idleruntime10:10:153
134491390,4ptp4l20224-21apt-get10:00:001
134491390,4ptp4l0-21swapper/312:25:173
134491390,4ptp4l0-21swapper/311:55:113
134491390,4ptp4l0-21swapper/311:35:523
134491390,4ptp4l0-21swapper/311:18:193
134491390,4ptp4l0-21swapper/310:25:223
134491390,4ptp4l0-21swapper/310:15:283
134491390,4ptp4l0-21swapper/309:58:593
134491390,4ptp4l0-21swapper/309:05:133
134491390,4ptp4l0-21swapper/308:20:133
134491390,4ptp4l0-21swapper/308:20:133
134491390,4ptp4l0-21swapper/212:37:592
134491390,4ptp4l0-21swapper/212:07:582
134491390,4ptp4l0-21swapper/211:40:022
134491390,4ptp4l0-21swapper/211:30:192
134491390,4ptp4l0-21swapper/210:47:452
134491390,4ptp4l0-21swapper/210:15:072
134491390,4ptp4l0-21swapper/210:00:142
134491390,4ptp4l0-21swapper/209:23:242
134491390,4ptp4l0-21swapper/208:40:152
134491390,4ptp4l0-21swapper/111:34:171
134491390,4ptp4l0-21swapper/111:11:511
134491390,4ptp4l0-21swapper/110:30:221
134491390,4ptp4l0-21swapper/110:12:251
134491390,4ptp4l0-21swapper/109:52:021
134491390,4ptp4l0-21swapper/109:00:291
134491390,4ptp4l0-21swapper/108:30:251
134491390,4ptp4l0-21swapper/107:22:151
134491390,4ptp4l0-21swapper/011:50:180
134491390,4ptp4l0-21swapper/009:04:180
134491390,4ptp4l0-21swapper/008:40:170
134491390,3ptp4l3473-21/usr/sbin/munin11:40:231
134491390,3ptp4l2318-21gnome-shell11:37:581
134491390,3ptp4l12032-21hddtemp_smartct12:00:161
134491390,3ptp4l10398-21ntp_states11:55:221
134491390,3ptp4l0-21swapper/112:21:231
134491390,3ptp4l0-21swapper/110:50:191
134491390,3ptp4l0-21swapper/109:35:181
134491390,3ptp4l0-21swapper/108:35:531
134491390,3ptp4l0-21swapper/108:20:081
134491390,3ptp4l0-21swapper/108:20:081
134491390,3ptp4l0-21swapper/108:07:311
134491390,3ptp4l0-21swapper/107:35:341
134491390,3ptp4l0-21swapper/011:16:410
134491390,2ptp4l26423-21ntp_states11:20:233
5692993832,4cyclictest33-21ksoftirqd/211:46:062
134491380,4ptp4l0-21swapper/311:50:133
134491380,4ptp4l0-21swapper/311:27:513
134491380,4ptp4l0-21swapper/212:17:512
134491380,4ptp4l0-21swapper/211:28:092
134491380,4ptp4l0-21swapper/211:17:592
134491380,4ptp4l0-21swapper/210:33:122
134491380,4ptp4l0-21swapper/209:42:022
134491380,4ptp4l0-21swapper/209:35:142
134491380,4ptp4l0-21swapper/209:26:532
134491380,4ptp4l0-21swapper/208:35:412
134491380,4ptp4l0-21swapper/207:55:092
134491380,4ptp4l0-21swapper/207:41:382
134491380,4ptp4l0-21swapper/112:25:121
134491380,4ptp4l0-21swapper/110:25:231
134491380,4ptp4l0-21swapper/110:20:001
134491380,4ptp4l0-21swapper/109:40:261
134491380,4ptp4l0-21swapper/109:26:301
134491380,4ptp4l0-21swapper/109:23:361
134491380,4ptp4l0-21swapper/108:55:131
134491380,3ptp4l0-21swapper/112:15:291
134491380,3ptp4l0-21swapper/109:45:011
134491370,4ptp4l24515-21apt09:00:002
134491370,4ptp4l0-21swapper/308:55:223
134491370,4ptp4l0-21swapper/211:00:522
134491370,4ptp4l0-21swapper/209:10:122
134491370,3ptp4l0-21swapper/212:10:172
134491370,3ptp4l0-21swapper/210:35:172
134491370,3ptp4l0-21swapper/210:35:172
134491370,3ptp4l0-21swapper/109:14:071
134491370,3ptp4l0-21swapper/009:11:160
569299363,31cyclictest0-21swapper/209:00:252
134491360,4ptp4l0-21swapper/009:05:200
134491350,3ptp4l0-21swapper/309:10:343
46198160,10rtkit-daemon1456-21mactelnetd07:07:403
44462153,7sleep20-21swapper/207:05:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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