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2026-04-06 - 17:07
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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 Mon Apr 06, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
728721430,7sleep32110399cyclictest11:15:203
134491750,28ptp4l19716-21meminfo07:05:210
134491640,26ptp4l31837-21if_enp1s009:50:160
134491630,4ptp4l1886-21df11:05:130
134491630,4ptp4l1886-21df11:05:130
134491610,4ptp4l0-21swapper/209:40:242
21101996032,6cyclictest25-21ksoftirqd/110:20:001
134491600,18ptp4l30907-21iostat07:30:170
21101995929,3cyclictest25-21ksoftirqd/112:29:111
134491590,4ptp4l0-21swapper/308:15:183
74812580,4sleep00-21swapper/012:25:220
21101995829,4cyclictest25-21ksoftirqd/112:20:141
21101995827,4cyclictest25-21ksoftirqd/107:12:511
21101995825,5cyclictest25-21ksoftirqd/107:20:211
21101995824,8cyclictest25-21ksoftirqd/110:25:001
134491580,4ptp4l0-21swapper/208:13:412
134491580,3ptp4l22130-21apt-get09:30:113
134491580,3ptp4l22130-21apt-get09:30:113
21101995728,4cyclictest25-21ksoftirqd/111:22:321
134491570,5ptp4l0-21swapper/007:10:180
134491570,3ptp4l0-21swapper/310:15:563
292182560,3sleep20-21swapper/209:45:132
21101995625,4cyclictest25-21ksoftirqd/108:28:211
21101995623,7cyclictest25-21ksoftirqd/112:05:141
21101995623,7cyclictest25-21ksoftirqd/112:05:131
21101995623,3cyclictest25-21ksoftirqd/109:26:381
21101995622,4cyclictest25-21ksoftirqd/108:13:081
21101995616,7cyclictest25-21ksoftirqd/111:05:241
21101995616,7cyclictest25-21ksoftirqd/111:05:241
134491560,17ptp4l17061-21apt-get09:20:040
21101995526,4cyclictest25-21ksoftirqd/109:34:201
21101995526,4cyclictest25-21ksoftirqd/109:34:201
21101995525,9cyclictest25-21ksoftirqd/110:00:191
21101995523,5cyclictest25-21ksoftirqd/110:00:001
21101995522,6cyclictest25-21ksoftirqd/108:05:141
21101995521,4cyclictest25-21ksoftirqd/108:40:001
21101995521,4cyclictest25-21ksoftirqd/107:30:001
134491550,4ptp4l0-21swapper/207:26:312
134491550,3ptp4l0-21swapper/008:15:160
21101995429,7cyclictest25-21ksoftirqd/110:59:501
21101995427,6cyclictest25-21ksoftirqd/111:55:451
21101995427,6cyclictest25-21ksoftirqd/109:09:411
21101995426,7cyclictest25-21ksoftirqd/110:06:451
21101995425,8cyclictest25-21ksoftirqd/108:15:131
21101995422,4cyclictest25-21ksoftirqd/110:40:001
21101995421,10cyclictest25-21ksoftirqd/109:40:241
134491540,4ptp4l0-21swapper/309:35:163
134491540,4ptp4l0-21swapper/210:55:242
134491540,4ptp4l0-21swapper/110:50:071
134491540,4ptp4l0-21swapper/009:00:000
134491540,3ptp4l21309-21ntpq10:35:220
134491540,3ptp4l0-21swapper/207:32:362
21101995326,3cyclictest25-21ksoftirqd/107:40:281
21101995325,7cyclictest25-21ksoftirqd/111:19:431
21101995325,7cyclictest25-21ksoftirqd/107:58:571
21101995325,3cyclictest25-21ksoftirqd/111:50:011
21101995324,3cyclictest25-21ksoftirqd/112:10:151
21101995323,3cyclictest25-21ksoftirqd/112:34:121
21101995320,4cyclictest25-21ksoftirqd/111:40:131
21101995315,5cyclictest25-21ksoftirqd/108:55:161
134491530,4ptp4l0-21swapper/310:25:113
21101995226,7cyclictest25-21ksoftirqd/109:23:571
21101995226,6cyclictest25-21ksoftirqd/107:45:271
21101995221,7cyclictest25-21ksoftirqd/111:25:251
21101995219,9cyclictest25-21ksoftirqd/112:35:151
134491520,3ptp4l0-21swapper/211:30:262
21101995125,7cyclictest25-21ksoftirqd/107:19:331
21101995123,3cyclictest25-21ksoftirqd/109:10:121
21101995120,7cyclictest25-21ksoftirqd/109:50:261
134491510,4ptp4l0-21swapper/208:25:172
134491510,3ptp4l0-21swapper/007:18:100
21101995023,8cyclictest25-21ksoftirqd/108:40:211
21101995022,3cyclictest25-21ksoftirqd/112:00:261
21101995021,7cyclictest25-21ksoftirqd/107:50:151
21101995018,8cyclictest25-21ksoftirqd/109:48:571
134491500,4ptp4l0-21swapper/212:37:152
134491500,4ptp4l0-21swapper/208:44:502
134491500,4ptp4l0-21swapper/010:08:500
134491500,4ptp4l0-21swapper/008:13:480
134491500,3ptp4l0-21swapper/310:30:413
134491500,3ptp4l0-21swapper/010:16:280
134491500,13ptp4l19266-21if_enp1s007:05:171
21101994918,7cyclictest25-21ksoftirqd/110:25:001
21101994917,9cyclictest25-21ksoftirqd/111:35:181
21101994917,7cyclictest25-21ksoftirqd/109:15:131
134491490,4ptp4l0-21swapper/309:28:573
134491490,4ptp4l0-21swapper/307:43:513
134491490,4ptp4l0-21swapper/307:38:223
134491490,4ptp4l0-21swapper/010:00:230
134491490,3ptp4l0-21swapper/212:17:582
134491490,3ptp4l0-21swapper/108:48:321
21101994816,7cyclictest25-21ksoftirqd/109:00:181
21101994816,7cyclictest25-21ksoftirqd/109:00:181
134491480,4ptp4l0-21swapper/308:54:593
134491480,4ptp4l0-21swapper/308:30:323
134491480,4ptp4l0-21swapper/308:30:323
134491480,3ptp4l0-21swapper/009:41:420
134491480,3ptp4l0-21swapper/008:22:370
2110199472,3cyclictest25-21ksoftirqd/108:30:261
2110199472,3cyclictest25-21ksoftirqd/108:30:261
2110199471,3cyclictest25-21ksoftirqd/110:45:001
134491470,4ptp4l0-21swapper/308:43:373
134491470,4ptp4l0-21swapper/308:39:463
134491470,4ptp4l0-21swapper/208:01:562
134491470,4ptp4l0-21swapper/207:48:492
134491470,4ptp4l0-21swapper/111:50:271
134491470,4ptp4l0-21swapper/008:42:130
134491470,10ptp4l0-21swapper/309:16:183
2110199464,2cyclictest121rcu_preempt08:20:221
2110199463,5cyclictest25-21ksoftirqd/111:00:171
2110199463,2cyclictest25-21ksoftirqd/112:15:171
2110199462,3cyclictest25-21ksoftirqd/107:35:161
21101994615,6cyclictest25-21ksoftirqd/111:10:271
21101994613,8cyclictest25-21ksoftirqd/110:35:001
134491460,4ptp4l0-21swapper/311:08:163
134491460,4ptp4l0-21swapper/311:08:163
134491460,4ptp4l0-21swapper/308:14:503
134491460,4ptp4l0-21swapper/209:37:222
134491460,4ptp4l0-21swapper/208:46:022
134491460,3ptp4l0-21swapper/007:55:260
134491460,10ptp4l0-21swapper/108:00:231
2110199456,2cyclictest25-21ksoftirqd/110:10:151
2110199455,2cyclictest25-21ksoftirqd/107:34:331
134491450,9ptp4l0-21swapper/212:14:312
134491450,4ptp4l3430-21apt-get10:00:032
134491450,4ptp4l0-21swapper/207:59:252
134491450,4ptp4l0-21swapper/009:14:090
134491450,3ptp4l0-21swapper/308:21:333
134491450,10ptp4l0-21swapper/007:23:350
2110199444,2cyclictest25-21ksoftirqd/109:36:501
2110199444,2cyclictest25-21ksoftirqd/108:53:331
2110199440,3cyclictest121rcu_preempt10:45:141
134491440,9ptp4l0-21swapper/211:46:392
134491440,4ptp4l10574-21ls07:55:213
134491440,4ptp4l0-21swapper/309:48:063
134491440,4ptp4l0-21swapper/309:23:463
134491440,4ptp4l0-21swapper/210:54:202
134491440,3ptp4l29362-21apt-get12:05:122
134491440,3ptp4l29362-21apt-get12:05:122
134491440,3ptp4l0-21swapper/309:54:383
134491440,10ptp4l0-21swapper/210:15:292
134491440,10ptp4l0-21swapper/011:49:420
134491430,9ptp4l0-21swapper/211:59:542
134491430,9ptp4l0-21swapper/209:10:502
134491430,5ptp4l0-21swapper/310:40:323
134491430,4ptp4l2318-21gnome-shell11:30:581
134491430,4ptp4l18418-21iostat_ios11:40:162
134491430,4ptp4l13545-21diskstats11:30:150
134491430,3ptp4l0-21swapper/011:51:530
134491430,2ptp4l121rcu_preempt09:44:183
134491430,10ptp4l0-21swapper/208:50:202
134491420,9ptp4l0-21swapper/209:51:132
134491420,8ptp4l10175-21wc12:30:252
134491420,5ptp4l0-21swapper/209:00:102
134491420,5ptp4l0-21swapper/209:00:102
134491420,4ptp4l32713-21irqstats12:10:190
134491420,4ptp4l10941-21apt-get11:25:122
134491420,4ptp4l0-21swapper/009:39:560
134491420,3ptp4l31716-21apt-get11:00:113
134491420,3ptp4l20146-21apt-get11:45:133
134491420,3ptp4l13089-21apt-get10:20:113
134491420,3ptp4l11877-21apt-get08:00:120
134491420,3ptp4l0-21swapper/210:06:592
134491420,3ptp4l0-21swapper/207:37:072
134491420,3ptp4l0-21swapper/011:12:020
134491420,10ptp4l0-21swapper/209:05:512
21102994136,3cyclictest33-21ksoftirqd/208:35:012
21102994136,3cyclictest33-21ksoftirqd/208:35:002
134491410,6ptp4l0-21swapper/312:00:083
134491410,6ptp4l0-21swapper/311:50:253
134491410,5ptp4l0-21swapper/311:10:243
134491410,5ptp4l0-21swapper/211:00:262
134491410,5ptp4l0-21swapper/209:55:182
134491410,5ptp4l0-21swapper/008:35:220
134491410,4ptp4l31910-21ls07:30:263
134491410,4ptp4l28057-21meminfo10:50:200
134491410,4ptp4l24814-21apt-get10:45:152
134491410,4ptp4l0-21swapper/012:30:200
134491410,4ptp4l0-21swapper/010:30:260
134491410,4ptp4l0-21swapper/008:05:560
134491410,3ptp4l29836-21hddtemp_smartct10:55:160
134491410,3ptp4l29547-21ls07:25:263
134491410,3ptp4l25859-21ntp_states11:55:243
134491410,3ptp4l0-21swapper/310:14:043
134491410,2ptp4l0-21swapper/209:15:512
134491400,8ptp4l0-21swapper/011:01:220
134491400,5ptp4l0-21swapper/310:55:233
134491400,5ptp4l0-21swapper/308:00:263
134491400,5ptp4l0-21swapper/210:12:412
134491400,5ptp4l0-21swapper/209:30:122
134491400,5ptp4l0-21swapper/209:30:122
134491400,5ptp4l0-21swapper/011:36:200
134491400,4ptp4l32178-21diskstats12:10:153
134491400,4ptp4l29188-21meminfo08:35:182
134491400,4ptp4l25754-21ls10:45:223
134491400,4ptp4l14604-21hddtemp_smartct08:05:163
134491400,4ptp4l0-21swapper/312:35:233
134491400,4ptp4l0-21swapper/311:40:173
134491400,4ptp4l0-21swapper/309:08:023
134491400,4ptp4l0-21swapper/308:55:273
134491400,4ptp4l0-21swapper/212:01:592
134491400,4ptp4l0-21swapper/211:38:582
134491400,4ptp4l0-21swapper/211:17:252
134491400,4ptp4l0-21swapper/210:44:062
134491400,4ptp4l0-21swapper/210:29:332
134491400,4ptp4l0-21swapper/210:20:492
134491400,4ptp4l0-21swapper/208:05:052
134491400,4ptp4l0-21swapper/207:23:492
134491400,4ptp4l0-21swapper/012:00:170
134491400,4ptp4l0-21swapper/011:40:180
134491400,4ptp4l0-21swapper/010:40:200
134491400,4ptp4l0-21swapper/010:22:470
134491400,4ptp4l0-21swapper/010:12:400
134491400,3ptp4l8788-21apt-get12:30:113
134491400,3ptp4l8106-21apt-get09:00:123
134491400,3ptp4l8106-21apt-get09:00:113
134491400,3ptp4l7569-21diskstats07:50:140
134491400,3ptp4l4965-21apt-get07:45:123
134491400,3ptp4l22695-21ls07:10:263
134491400,3ptp4l19807-21sshd09:25:072
134491390,8ptp4l0-21swapper/307:24:563
134491390,5ptp4l0-21swapper/308:45:073
134491390,5ptp4l0-21swapper/207:10:222
134491390,4ptp4l17878-21/usr/sbin/munin10:30:212
134491390,4ptp4l1659-21/usr/sbin/munin11:05:162
134491390,4ptp4l1659-21/usr/sbin/munin11:05:162
134491390,4ptp4l0-21swapper/312:21:203
134491390,4ptp4l0-21swapper/311:35:283
134491390,4ptp4l0-21swapper/311:30:163
134491390,4ptp4l0-21swapper/311:20:153
134491390,4ptp4l0-21swapper/310:50:233
134491390,4ptp4l0-21swapper/310:35:243
134491390,4ptp4l0-21swapper/309:10:123
134491390,4ptp4l0-21swapper/308:29:563
134491390,4ptp4l0-21swapper/212:29:222
134491390,4ptp4l0-21swapper/212:22:022
134491390,4ptp4l0-21swapper/211:51:182
134491390,4ptp4l0-21swapper/211:22:302
134491390,4ptp4l0-21swapper/210:36:182
134491390,4ptp4l0-21swapper/207:50:262
134491390,4ptp4l0-21swapper/207:41:552
134491390,4ptp4l0-21swapper/012:35:280
134491390,4ptp4l0-21swapper/012:20:120
134491390,4ptp4l0-21swapper/011:55:170
134491390,4ptp4l0-21swapper/011:25:230
134491390,4ptp4l0-21swapper/010:29:380
134491390,4ptp4l0-21swapper/009:09:280
134491390,4ptp4l0-21swapper/009:00:580
134491390,4ptp4l0-21swapper/009:00:580
134491390,4ptp4l0-21swapper/008:50:220
134491390,4ptp4l0-21swapper/008:47:230
134491390,4ptp4l0-21swapper/008:31:410
134491390,4ptp4l0-21swapper/008:31:410
134491390,4ptp4l0-21swapper/008:25:530
134491390,3ptp4l6631-21diskstats11:15:140
134491390,3ptp4l29161-21ntp_states07:25:230
134491390,3ptp4l2318-21gnome-shell11:23:580
134491390,3ptp4l22834-21apt-get08:21:002
134491390,3ptp4l18379-21irqstats09:20:192
134491390,3ptp4l0-21swapper/312:25:293
134491380,5ptp4l0-21swapper/207:18:112
134491380,4ptp4l0-21swapper/312:08:203
134491380,4ptp4l0-21swapper/312:08:203
134491380,4ptp4l0-21swapper/311:28:423
134491380,4ptp4l0-21swapper/310:05:123
134491380,4ptp4l0-21swapper/309:59:063
134491380,4ptp4l0-21swapper/307:50:213
134491380,4ptp4l0-21swapper/211:10:152
134491380,4ptp4l0-21swapper/208:58:392
134491380,4ptp4l0-21swapper/208:17:112
134491380,4ptp4l0-21swapper/012:15:180
134491380,4ptp4l0-21swapper/012:05:170
134491380,4ptp4l0-21swapper/012:05:170
134491380,4ptp4l0-21swapper/010:45:300
134491380,4ptp4l0-21swapper/009:45:240
134491380,4ptp4l0-21swapper/009:25:430
134491380,4ptp4l0-21swapper/009:15:170
134491380,4ptp4l0-21swapper/007:45:340
134491380,4ptp4l0-21swapper/007:43:260
134491380,4ptp4l0-21swapper/007:38:050
134491380,3ptp4l0-21swapper/310:00:153
134491380,3ptp4l0-21swapper/009:58:460
134491370,4ptp4l0-21swapper/009:30:040
134491370,4ptp4l0-21swapper/009:30:040
134491370,3ptp4l0-21swapper/307:16:073
134491360,3ptp4l0-21swapper/312:17:553
134491330,5ptp4l0-21swapper/307:05:013
193842264,12sleep219705-21ls07:05:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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