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2026-09-10 - 19:05
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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 Sep 10, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491740,6ptp4l0-21swapper/009:55:130
134491680,3ptp4l26733-21/usr/sbin/munin11:20:270
134491670,2ptp4l121rcu_preempt11:30:192
580799661,2cyclictest0-21swapper/212:35:282
580799661,2cyclictest0-21swapper/212:35:282
134491640,4ptp4l0-21swapper/310:35:523
134491580,21ptp4l0-21swapper/311:02:563
580799571,54cyclictest0-21swapper/208:55:292
134491560,3ptp4l0-21swapper/208:44:592
134491550,3ptp4l0-21swapper/208:22:562
134491530,4ptp4l0-21swapper/210:59:572
134491530,4ptp4l0-21swapper/012:31:360
134491520,5ptp4l0-21swapper/011:17:450
134491520,4ptp4l0-21swapper/310:46:103
134491520,3ptp4l0-21swapper/207:25:372
134491520,13ptp4l0-21swapper/310:05:273
134491510,4ptp4l0-21swapper/310:53:043
134491510,4ptp4l0-21swapper/008:23:530
134491510,4ptp4l0-21swapper/007:46:570
134491510,4ptp4l0-21swapper/007:29:570
134491510,3ptp4l0-21swapper/310:04:483
5808995043,4cyclictest41-21ksoftirqd/309:15:123
134491500,4ptp4l0-21swapper/311:16:003
134491500,4ptp4l0-21swapper/308:10:473
134491500,4ptp4l0-21swapper/011:34:020
134491500,4ptp4l0-21swapper/009:28:350
134491500,4ptp4l0-21swapper/008:37:170
134491500,4ptp4l0-21swapper/008:18:120
134491500,4ptp4l0-21swapper/008:05:450
134491500,3ptp4l0-21swapper/312:02:143
134491500,3ptp4l0-21swapper/011:08:350
134491500,10ptp4l0-21swapper/011:54:240
134491490,4ptp4l0-21swapper/312:23:243
134491490,4ptp4l0-21swapper/311:05:253
134491490,4ptp4l0-21swapper/308:55:543
134491490,4ptp4l0-21swapper/012:08:570
134491490,4ptp4l0-21swapper/010:16:390
134491490,3ptp4l0-21swapper/310:22:043
134491490,3ptp4l0-21swapper/211:13:462
134491490,3ptp4l0-21swapper/207:40:172
46198480,12rtkit-daemon0-21swapper/211:26:002
134491480,4ptp4l0-21swapper/310:31:483
134491480,4ptp4l0-21swapper/308:43:253
134491480,4ptp4l0-21swapper/307:44:193
134491480,4ptp4l0-21swapper/212:05:022
134491480,4ptp4l0-21swapper/207:07:452
5808994741,3cyclictest41-21ksoftirqd/312:20:003
134491470,4ptp4l0-21swapper/010:10:020
134491470,3ptp4l0-21swapper/312:11:343
134491460,4ptp4l0-21swapper/312:35:003
134491460,4ptp4l0-21swapper/312:35:003
134491460,4ptp4l0-21swapper/309:40:093
134491460,4ptp4l0-21swapper/309:29:413
134491460,4ptp4l0-21swapper/308:38:293
134491460,4ptp4l0-21swapper/308:25:453
134491460,4ptp4l0-21swapper/308:08:233
134491460,4ptp4l0-21swapper/112:21:341
134491460,3ptp4l0-21swapper/311:58:363
5807994512,32cyclictest13739-21kworker/2:110:25:272
134491450,6ptp4l0-21swapper/210:40:032
134491450,4ptp4l0-21swapper/210:07:252
134491450,4ptp4l0-21swapper/108:54:391
134491450,3ptp4l0-21swapper/209:02:212
134491450,3ptp4l0-21swapper/207:45:372
134491440,8ptp4l0-21swapper/307:05:163
134491440,6ptp4l1097-21ls11:35:243
134491440,6ptp4l0-21swapper/312:28:193
134491440,4ptp4l0-21swapper/211:50:572
134491440,4ptp4l0-21swapper/209:44:542
134491440,3ptp4l0-21swapper/209:23:162
134491440,10ptp4l0-21swapper/209:09:112
5807994313,29cyclictest17893-21kworker/2:211:20:282
134491430,9ptp4l0-21swapper/011:48:120
134491430,9ptp4l0-21swapper/009:12:100
134491430,5ptp4l8441-21apt-get09:35:112
134491430,5ptp4l1485-21apt-get09:20:103
134491430,4ptp4l41-21ksoftirqd/308:48:463
134491430,4ptp4l32474-21meminfo10:25:190
134491430,4ptp4l13057-21apt-get09:45:122
134491430,3ptp4l10811-21apt-get08:30:100
134491430,3ptp4l10461-21ls10:45:252
134491430,3ptp4l0-21swapper/307:35:243
134491430,3ptp4l0-21swapper/209:50:362
580899421,3cyclictest121rcu_preempt11:25:443
134491420,9ptp4l0-21swapper/312:08:323
134491420,9ptp4l0-21swapper/311:41:003
134491420,9ptp4l0-21swapper/207:59:132
134491420,9ptp4l0-21swapper/007:10:590
134491420,5ptp4l0-21swapper/008:45:190
134491420,4ptp4l9747-21iostat_ios11:55:180
134491420,4ptp4l12748-21apt-get07:25:103
134491420,4ptp4l0-21swapper/211:37:332
134491420,4ptp4l0-21swapper/008:25:130
134491420,3ptp4l18244-21apt-get11:05:112
134491420,3ptp4l0-21swapper/007:43:590
5808994136,3cyclictest15678-21fschecks_count09:50:143
5808994134,4cyclictest41-21ksoftirqd/311:00:013
5807994113,26cyclictest0-21swapper/207:20:292
134491410,5ptp4l0-21swapper/310:15:233
134491410,5ptp4l0-21swapper/309:30:233
134491410,5ptp4l0-21swapper/309:10:253
134491410,5ptp4l0-21swapper/009:30:200
134491410,5ptp4l0-21swapper/007:23:200
134491410,4ptp4l9564-21ntp_states09:35:210
134491410,4ptp4l23737-21ls07:45:283
134491410,4ptp4l2318-21gnome-shell11:43:592
134491410,4ptp4l17059-21ntp_states11:00:232
134491410,4ptp4l0-21swapper/012:00:300
134491410,4ptp4l0-21swapper/010:37:540
134491410,4ptp4l0-21swapper/010:32:320
134491410,4ptp4l0-21swapper/007:54:290
134491410,3ptp4l8386-21ls11:50:273
134491410,3ptp4l31574-21apt-get09:15:122
134491410,3ptp4l19970-21apt-get10:00:131
134491410,3ptp4l0-21swapper/212:26:442
134491410,3ptp4l0-21swapper/210:17:222
134491410,10ptp4l0-21swapper/207:31:032
5808994035,3cyclictest41-21ksoftirqd/310:45:013
5808994035,3cyclictest41-21ksoftirqd/309:59:593
5808994027,10cyclictest41-21ksoftirqd/309:35:243
134491400,5ptp4l580599cyclictest08:50:110
134491400,5ptp4l5462-21timerandwakeup10:35:282
134491400,5ptp4l0-21swapper/307:55:123
134491400,5ptp4l0-21swapper/011:36:070
134491400,5ptp4l0-21swapper/009:50:230
134491400,4ptp4l9539-21if_enp4s010:45:160
134491400,4ptp4l29494-21df09:10:162
134491400,4ptp4l1817-21/usr/sbin/munin09:20:140
134491400,4ptp4l1160-21apt-get10:30:012
134491400,4ptp4l11381-21iostat_ios08:30:162
134491400,4ptp4l0-21swapper/311:10:163
134491400,4ptp4l0-21swapper/308:51:533
134491400,4ptp4l0-21swapper/308:15:123
134491400,4ptp4l0-21swapper/307:30:213
134491400,4ptp4l0-21swapper/307:20:273
134491400,4ptp4l0-21swapper/212:30:222
134491400,4ptp4l0-21swapper/212:00:112
134491400,4ptp4l0-21swapper/209:30:112
134491400,4ptp4l0-21swapper/207:15:112
134491400,4ptp4l0-21swapper/012:27:140
134491400,4ptp4l0-21swapper/012:21:150
134491400,4ptp4l0-21swapper/012:17:370
134491400,4ptp4l0-21swapper/011:10:250
134491400,4ptp4l0-21swapper/011:03:060
134491400,4ptp4l0-21swapper/010:56:140
134491400,4ptp4l0-21swapper/010:42:470
134491400,4ptp4l0-21swapper/010:21:340
134491400,4ptp4l0-21swapper/010:04:010
134491400,4ptp4l0-21swapper/009:40:020
134491400,4ptp4l0-21swapper/008:55:110
134491400,4ptp4l0-21swapper/007:56:470
134491400,4ptp4l0-21swapper/007:37:090
134491400,3ptp4l6949-21ntp_states07:10:233
134491400,3ptp4l29133-21apt-get08:00:132
134491400,3ptp4l17552-21apt-get07:35:112
134491400,3ptp4l0-21swapper/111:44:581
134491400,3ptp4l0-21swapper/009:09:140
134491400,2ptp4l5181-21ls08:15:252
134491400,12ptp4l0-21swapper/309:47:323
134491390,5ptp4l0-21swapper/008:03:460
134491390,4ptp4l0-21swapper/312:31:133
134491390,4ptp4l0-21swapper/311:45:183
134491390,4ptp4l0-21swapper/311:20:443
134491390,4ptp4l0-21swapper/309:05:503
134491390,4ptp4l0-21swapper/309:00:233
134491390,4ptp4l0-21swapper/308:30:213
134491390,4ptp4l0-21swapper/308:20:233
134491390,4ptp4l0-21swapper/212:21:502
134491390,4ptp4l0-21swapper/210:50:142
134491390,4ptp4l0-21swapper/210:22:022
134491390,4ptp4l0-21swapper/210:10:222
134491390,4ptp4l0-21swapper/208:37:292
134491390,4ptp4l0-21swapper/208:25:202
134491390,4ptp4l0-21swapper/208:06:352
134491390,4ptp4l0-21swapper/207:53:072
134491390,4ptp4l0-21swapper/112:32:071
134491390,4ptp4l0-21swapper/111:20:161
134491390,4ptp4l0-21swapper/110:56:161
134491390,4ptp4l0-21swapper/109:57:421
134491390,4ptp4l0-21swapper/109:50:521
134491390,4ptp4l0-21swapper/012:35:200
134491390,4ptp4l0-21swapper/012:35:200
134491390,4ptp4l0-21swapper/012:13:520
134491390,4ptp4l0-21swapper/010:50:260
134491390,4ptp4l0-21swapper/010:06:060
134491390,4ptp4l0-21swapper/009:45:280
134491390,4ptp4l0-21swapper/009:19:420
134491390,4ptp4l0-21swapper/009:01:520
134491390,4ptp4l0-21swapper/008:40:210
134491390,4ptp4l0-21swapper/008:12:380
134491390,4ptp4l0-21swapper/007:30:170
134491390,3ptp4l25724-21ps07:50:243
134491390,3ptp4l2499-21ntp_states08:10:222
134491390,3ptp4l16396-21diskstats12:10:152
134491390,3ptp4l1301-21snmpd10:28:123
134491390,3ptp4l0-21swapper/311:30:243
134491390,3ptp4l0-21swapper/107:10:111
134491390,2ptp4l5835-21apt-get07:10:122
134491390,2ptp4l20019-21ls12:15:231
134491380,4ptp4l8303-21tr07:15:133
134491380,4ptp4l0-21swapper/310:11:063
134491380,4ptp4l0-21swapper/212:15:152
134491380,4ptp4l0-21swapper/211:15:202
134491380,4ptp4l0-21swapper/209:58:182
134491380,4ptp4l0-21swapper/208:50:142
134491380,4ptp4l0-21swapper/208:45:462
134491380,4ptp4l0-21swapper/112:36:521
134491380,4ptp4l0-21swapper/112:36:521
134491380,4ptp4l0-21swapper/112:26:291
134491380,4ptp4l0-21swapper/112:12:201
134491380,4ptp4l0-21swapper/112:01:551
134491380,4ptp4l0-21swapper/111:31:051
134491380,4ptp4l0-21swapper/111:06:371
134491380,4ptp4l0-21swapper/110:22:021
134491380,4ptp4l0-21swapper/109:26:431
134491380,4ptp4l0-21swapper/109:23:121
134491380,4ptp4l0-21swapper/109:16:181
134491380,4ptp4l0-21swapper/108:45:151
134491380,4ptp4l0-21swapper/107:30:171
134491380,4ptp4l0-21swapper/011:26:110
134491380,4ptp4l0-21swapper/007:17:330
134491380,3ptp4l7169-21ls09:30:191
134491380,3ptp4l11760-21meminfo08:30:191
134491380,3ptp4l0-21swapper/308:00:173
134491380,3ptp4l0-21swapper/211:45:212
134491380,3ptp4l0-21swapper/210:02:142
134491380,3ptp4l0-21swapper/209:25:132
134491380,3ptp4l0-21swapper/108:27:521
134491380,3ptp4l0-21swapper/011:40:050
134491370,4ptp4l0-21swapper/112:08:311
134491370,4ptp4l0-21swapper/111:59:151
134491370,4ptp4l0-21swapper/110:38:441
134491370,4ptp4l0-21swapper/109:40:171
134491370,4ptp4l0-21swapper/108:58:291
134491370,3ptp4l0-21swapper/211:55:152
134491370,3ptp4l0-21swapper/111:50:401
134491370,3ptp4l0-21swapper/111:48:121
134491370,3ptp4l0-21swapper/111:17:071
134491370,3ptp4l0-21swapper/111:12:521
134491370,3ptp4l0-21swapper/111:03:251
134491370,3ptp4l0-21swapper/110:15:001
134491370,3ptp4l0-21swapper/109:36:551
134491370,3ptp4l0-21swapper/108:09:271
134491370,3ptp4l0-21swapper/108:01:471
134491370,2ptp4l0-21swapper/111:35:121
134491360,4ptp4l0-21swapper/109:02:021
134491360,4ptp4l0-21swapper/108:21:071
134491360,3ptp4l0-21swapper/111:25:441
134491360,3ptp4l0-21swapper/110:08:141
134491360,3ptp4l0-21swapper/108:35:211
134491360,3ptp4l0-21swapper/108:10:291
134491360,3ptp4l0-21swapper/107:25:181
134491350,3ptp4l0-21swapper/110:25:171
134491350,3ptp4l0-21swapper/109:46:571
134491350,3ptp4l0-21swapper/107:50:281
134491350,3ptp4l0-21swapper/107:16:321
134491340,4ptp4l0-21swapper/108:41:491
134491340,3ptp4l0-21swapper/108:19:301
134491340,3ptp4l0-21swapper/107:45:521
5806993227,3cyclictest25-21ksoftirqd/110:45:001
134491320,4ptp4l0-21swapper/110:18:191
5806993025,3cyclictest25-21ksoftirqd/110:50:241
5806992924,3cyclictest25-21ksoftirqd/107:35:401
134491290,3ptp4l0-21swapper/107:43:231
134491280,3ptp4l0-21swapper/110:34:571
5806992622,3cyclictest25-21ksoftirqd/108:00:001
5806992621,3cyclictest25-21ksoftirqd/110:47:571
5806992520,3cyclictest25-21ksoftirqd/107:23:091
134491240,3ptp4l0-21swapper/109:11:151
134491230,3ptp4l0-21swapper/109:07:371
54022114,4sleep00-21swapper/007:08:410
33202113,4sleep10-21swapper/107:05:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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