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2026-04-17 - 19:38
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Fri Apr 17, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1432321720,3sleep0101ktimersoftd/008:45:120
2283021610,4sleep0222199cyclictest09:00:290
134491650,5ptp4l22118-21sed12:30:150
141172630,5sleep00-21swapper/007:35:120
134491630,10ptp4l0-21swapper/011:52:240
134491600,3ptp4l0-21swapper/011:10:290
134491590,4ptp4l21390-21diskstats10:10:140
134491590,3ptp4l0-21swapper/109:25:441
134491590,3ptp4l0-21swapper/009:15:240
307402580,1sleep130743-21cut09:20:151
134491580,4ptp4l0-21swapper/211:14:012
134491580,4ptp4l0-21swapper/107:55:271
134491580,3ptp4l0-21swapper/211:40:152
134491570,4ptp4l0-21swapper/108:00:361
134491570,4ptp4l0-21swapper/007:42:030
134491570,3ptp4l0-21swapper/111:55:161
134491570,3ptp4l0-21swapper/010:25:220
134491570,3ptp4l0-21swapper/009:30:210
134491560,3ptp4l0-21swapper/108:50:231
134491560,3ptp4l0-21swapper/012:25:190
134491560,3ptp4l0-21swapper/010:00:250
134491560,3ptp4l0-21swapper/008:20:150
134491560,23ptp4l9-21ksoftirqd/007:11:560
222499548,45cyclictest0-21swapper/312:14:093
134491530,9ptp4l33-21ksoftirqd/208:20:272
134491530,3ptp4l0-21swapper/110:20:261
134491530,3ptp4l0-21swapper/011:55:440
134491530,12ptp4l796-21meminfo07:05:200
134491520,3ptp4l0-21swapper/111:13:571
134491520,18ptp4l9-21ksoftirqd/010:08:560
134491510,5ptp4l0-21swapper/010:52:550
134491510,4ptp4l0-21swapper/209:24:312
134491510,4ptp4l0-21swapper/207:35:592
134491510,4ptp4l0-21swapper/112:08:561
134491510,4ptp4l0-21swapper/011:06:020
134491510,4ptp4l0-21swapper/010:30:510
134491510,3ptp4l0-21swapper/110:50:221
134491510,13ptp4l0-21swapper/111:25:181
222499501,47cyclictest0-21swapper/310:20:093
2222995022,4cyclictest25-21ksoftirqd/109:04:061
134491500,4ptp4l0-21swapper/011:28:040
134491500,3ptp4l0-21swapper/109:08:431
134491500,3ptp4l0-21swapper/011:03:210
134491490,4ptp4l0-21swapper/208:54:242
134491490,4ptp4l0-21swapper/111:44:381
134491490,4ptp4l0-21swapper/111:36:531
134491490,4ptp4l0-21swapper/108:17:461
134491490,4ptp4l0-21swapper/011:40:400
134491490,4ptp4l0-21swapper/009:46:440
134491490,4ptp4l0-21swapper/009:36:570
134491490,4ptp4l0-21swapper/008:53:080
134491490,3ptp4l0-21swapper/011:48:260
134491480,4ptp4l0-21swapper/307:09:293
134491480,4ptp4l0-21swapper/110:55:321
134491480,4ptp4l0-21swapper/110:28:211
134491480,4ptp4l0-21swapper/109:38:521
134491480,4ptp4l0-21swapper/010:36:000
134491480,4ptp4l0-21swapper/010:17:530
134491480,4ptp4l0-21swapper/009:50:430
134491480,4ptp4l0-21swapper/009:11:170
134491480,3ptp4l0-21swapper/108:22:581
2222994710,8cyclictest25-21ksoftirqd/111:30:191
134491470,4ptp4l0-21swapper/110:38:471
134491470,4ptp4l0-21swapper/108:25:361
134491470,4ptp4l0-21swapper/012:22:520
134491470,4ptp4l0-21swapper/009:57:140
134491470,4ptp4l0-21swapper/008:40:040
134491470,4ptp4l0-21swapper/008:40:040
134491470,4ptp4l0-21swapper/008:26:530
134491470,4ptp4l0-21swapper/007:25:500
134491470,3ptp4l0-21swapper/110:14:071
134491470,3ptp4l0-21swapper/108:42:171
134491470,3ptp4l0-21swapper/108:42:171
134491470,3ptp4l0-21swapper/009:25:450
134491470,13ptp4l41-21ksoftirqd/307:10:193
134491460,5ptp4l0-21swapper/207:09:252
134491460,3ptp4l222499cyclictest12:24:073
134491460,3ptp4l0-21swapper/211:30:362
2222994517,3cyclictest25-21ksoftirqd/112:20:191
2222994516,4cyclictest25-21ksoftirqd/109:18:541
2222994514,3cyclictest25-21ksoftirqd/108:45:271
134491450,4ptp4l0-21swapper/111:20:141
134491450,3ptp4l23383-21cpu10:15:121
134491450,3ptp4l0-21swapper/112:02:311
134491450,3ptp4l0-21swapper/008:07:110
134491450,11ptp4l0-21swapper/110:42:381
222299449,8cyclictest25-21ksoftirqd/109:41:021
2222994419,6cyclictest25-21ksoftirqd/111:01:001
134491440,9ptp4l0-21swapper/207:10:382
134491440,5ptp4l0-21swapper/208:45:112
134491440,4ptp4l0-21swapper/307:33:343
134491440,4ptp4l0-21swapper/107:38:081
134491440,4ptp4l0-21swapper/011:22:200
134491440,3ptp4l0-21swapper/109:59:571
134491440,3ptp4l0-21swapper/009:40:070
134491440,3ptp4l0-21swapper/008:31:190
2223994337,3cyclictest33-21ksoftirqd/208:45:002
2223994337,3cyclictest33-21ksoftirqd/208:45:002
222299439,4cyclictest25-21ksoftirqd/108:35:211
2222994337,3cyclictest25-21ksoftirqd/108:10:011
134491430,9ptp4l0-21swapper/211:52:322
134491430,9ptp4l0-21swapper/210:19:352
134491430,5ptp4l899-21strings07:05:211
134491430,5ptp4l12715-21ls07:30:180
134491430,5ptp4l0-21swapper/309:15:123
134491430,5ptp4l0-21swapper/307:35:123
134491430,5ptp4l0-21swapper/207:15:202
134491430,4ptp4l22029-21meminfo10:10:192
134491430,4ptp4l0-21swapper/307:20:123
134491430,3ptp4l2318-21gnome-shell09:59:592
134491430,3ptp4l1301-21snmpd12:32:483
46198420,3rtkit-daemon460-21rtkit-daemon09:31:492
2222994227,12cyclictest25-21ksoftirqd/110:50:001
2222994215,3cyclictest25-21ksoftirqd/111:46:251
2222994210,8cyclictest25-21ksoftirqd/112:30:281
134491420,9ptp4l11219-21latency12:05:190
134491420,9ptp4l0-21swapper/211:29:022
134491420,9ptp4l0-21swapper/208:16:302
134491420,5ptp4l0-21swapper/310:45:033
134491420,4ptp4l7216-21df_inode07:20:131
134491420,3ptp4l8416-21ls07:20:260
134491420,3ptp4l18687-21apt-get07:45:103
134491420,10ptp4l0-21swapper/208:38:192
2224994112,4cyclictest0-21swapper/309:25:123
2223994135,4cyclictest33-21ksoftirqd/208:57:142
222299419,4cyclictest25-21ksoftirqd/111:10:001
222299417,9cyclictest25-21ksoftirqd/112:40:011
222299417,4cyclictest25-21ksoftirqd/112:10:401
222299414,3cyclictest121rcu_preempt07:50:171
2222994112,3cyclictest25-21ksoftirqd/107:30:181
134491410,9ptp4l0-21swapper/210:35:032
134491410,9ptp4l0-21swapper/007:56:460
134491410,8ptp4l0-21swapper/212:09:462
134491410,8ptp4l0-21swapper/211:57:552
134491410,8ptp4l0-21swapper/208:33:092
134491410,5ptp4l0-21swapper/310:15:183
134491410,4ptp4l7862-21meminfo07:20:192
134491410,4ptp4l6750-21users10:45:300
134491410,4ptp4l26164-21iostat_ios08:00:170
134491410,4ptp4l21291-21diskstats07:50:152
134491410,4ptp4l17738-21ps08:50:213
134491410,4ptp4l13159-21ntp_states11:00:222
134491410,4ptp4l0-21swapper/310:00:183
134491410,4ptp4l0-21swapper/308:35:123
134491410,4ptp4l0-21swapper/109:30:191
134491410,4ptp4l0-21swapper/012:10:270
134491410,4ptp4l0-21swapper/012:01:320
134491410,4ptp4l0-21swapper/010:43:480
134491410,3ptp4l32486-21apt-get08:15:120
134491410,3ptp4l14239-21apt-get08:45:113
2224994033,4cyclictest41-21ksoftirqd/309:10:273
2223994029,9cyclictest33-21ksoftirqd/208:00:152
2223994028,9cyclictest33-21ksoftirqd/210:30:272
222299401,5cyclictest25-21ksoftirqd/107:25:141
2222994015,7cyclictest25-21ksoftirqd/107:44:271
2222994012,8cyclictest25-21ksoftirqd/111:55:001
134491400,5ptp4l4711-21/usr/sbin/munin07:15:131
134491400,5ptp4l0-21swapper/010:20:180
134491400,4ptp4l5634-21grep07:15:213
134491400,4ptp4l31309-21ntp_states08:10:241
134491400,4ptp4l31309-21ntp_states08:10:241
134491400,4ptp4l26851-21ntp_states09:10:221
134491400,4ptp4l10091-21iostat09:45:171
134491400,4ptp4l0-21swapper/311:07:343
134491400,4ptp4l0-21swapper/309:50:223
134491400,4ptp4l0-21swapper/309:35:193
134491400,4ptp4l0-21swapper/308:20:173
134491400,4ptp4l0-21swapper/212:24:262
134491400,4ptp4l0-21swapper/210:55:182
134491400,4ptp4l0-21swapper/208:25:072
134491400,4ptp4l0-21swapper/207:28:122
134491400,4ptp4l0-21swapper/110:00:121
134491400,4ptp4l0-21swapper/009:05:130
134491400,4ptp4l0-21swapper/008:55:160
134491400,4ptp4l0-21swapper/007:45:130
134491400,3ptp4l5887-21ntp_states08:25:223
134491400,3ptp4l31960-21users10:30:281
134491400,3ptp4l10204-21irqstats08:35:190
134491400,2ptp4l31609-21ls08:10:260
134491400,2ptp4l31609-21ls08:10:260
2223993933,3cyclictest33-21ksoftirqd/211:15:172
222299397,7cyclictest25-21ksoftirqd/111:15:241
222299394,2cyclictest121rcu_preempt07:45:151
2222993933,3cyclictest25-21ksoftirqd/109:55:001
134491390,5ptp4l0-21swapper/108:30:021
134491390,4ptp4l28303-21sed09:15:142
134491390,4ptp4l2250-21/usr/sbin/munin07:10:111
134491390,4ptp4l222499cyclictest08:16:013
134491390,4ptp4l15489-21irqrtprio12:15:170
134491390,4ptp4l0-21swapper/312:26:573
134491390,4ptp4l0-21swapper/311:28:063
134491390,4ptp4l0-21swapper/310:28:543
134491390,4ptp4l0-21swapper/309:58:143
134491390,4ptp4l0-21swapper/309:21:323
134491390,4ptp4l0-21swapper/308:33:303
134491390,4ptp4l0-21swapper/307:50:173
134491390,4ptp4l0-21swapper/307:40:213
134491390,4ptp4l0-21swapper/212:31:072
134491390,4ptp4l0-21swapper/211:09:232
134491390,4ptp4l0-21swapper/210:46:062
134491390,4ptp4l0-21swapper/210:42:472
134491390,4ptp4l0-21swapper/210:25:122
134491390,4ptp4l0-21swapper/210:00:082
134491390,4ptp4l0-21swapper/209:50:232
134491390,4ptp4l0-21swapper/209:38:102
134491390,4ptp4l0-21swapper/209:08:492
134491390,4ptp4l0-21swapper/208:07:472
134491390,4ptp4l0-21swapper/207:55:142
134491390,4ptp4l0-21swapper/012:37:040
134491390,4ptp4l0-21swapper/011:31:140
134491390,4ptp4l0-21swapper/010:55:160
134491390,4ptp4l0-21swapper/009:24:070
134491390,4ptp4l0-21swapper/007:15:110
134491390,3ptp4l24400-21ntp_states07:55:253
134491390,3ptp4l20129-21python10:05:241
134491390,3ptp4l20089-21meminfo11:15:190
134491390,3ptp4l19781-21memory08:55:221
134491390,3ptp4l0-21swapper/212:14:062
134491390,3ptp4l0-21swapper/112:15:271
134491390,2ptp4l0-21swapper/311:17:393
134491380,5ptp4l0-21swapper/311:35:133
134491380,4ptp4l0-21swapper/312:00:133
134491380,4ptp4l0-21swapper/311:40:153
134491380,4ptp4l0-21swapper/311:21:103
134491380,4ptp4l0-21swapper/311:00:273
134491380,4ptp4l0-21swapper/310:50:223
134491380,4ptp4l0-21swapper/310:35:263
134491380,4ptp4l0-21swapper/309:49:023
134491380,4ptp4l0-21swapper/309:05:213
134491380,4ptp4l0-21swapper/308:40:243
134491380,4ptp4l0-21swapper/308:40:243
134491380,4ptp4l0-21swapper/308:10:443
134491380,4ptp4l0-21swapper/308:10:443
134491380,4ptp4l0-21swapper/308:00:143
134491380,4ptp4l0-21swapper/307:25:293
134491380,4ptp4l0-21swapper/212:37:242
134491380,4ptp4l0-21swapper/212:25:292
134491380,4ptp4l0-21swapper/211:45:302
134491380,4ptp4l0-21swapper/211:21:102
134491380,4ptp4l0-21swapper/210:20:172
134491380,4ptp4l0-21swapper/210:05:102
134491380,4ptp4l0-21swapper/209:46:072
134491380,4ptp4l0-21swapper/209:42:552
134491380,4ptp4l0-21swapper/209:03:312
134491380,4ptp4l0-21swapper/208:11:252
134491380,4ptp4l0-21swapper/208:11:252
134491380,4ptp4l0-21swapper/207:45:092
134491380,4ptp4l0-21swapper/207:40:272
134491380,4ptp4l0-21swapper/007:52:050
134491380,3ptp4l0-21swapper/312:35:123
134491380,3ptp4l0-21swapper/310:10:223
134491380,3ptp4l0-21swapper/212:15:562
134491380,3ptp4l0-21swapper/211:38:452
134491380,3ptp4l0-21swapper/209:26:342
134491380,3ptp4l0-21swapper/207:33:582
134491380,3ptp4l0-21swapper/112:25:281
134491380,3ptp4l0-21swapper/011:38:110
2224993715,5cyclictest0-21swapper/311:10:143
134491370,4ptp4l7945-21/usr/sbin/munin12:00:152
134491370,4ptp4l0-21swapper/311:30:153
134491370,4ptp4l0-21swapper/309:00:123
134491370,4ptp4l0-21swapper/209:10:402
134491370,3ptp4l0-21swapper/312:15:503
134491370,3ptp4l0-21swapper/311:59:143
134491370,3ptp4l0-21swapper/311:51:183
134491370,3ptp4l0-21swapper/311:48:293
134491370,3ptp4l0-21swapper/310:31:303
134491370,3ptp4l0-21swapper/310:08:203
134491370,3ptp4l0-21swapper/308:59:153
134491370,3ptp4l0-21swapper/210:50:482
134491360,4ptp4l0-21swapper/312:08:443
134491360,3ptp4l0-21swapper/310:56:193
134491360,3ptp4l0-21swapper/310:44:093
134491350,4ptp4l0-21swapper/308:05:473
134491350,3ptp4l0-21swapper/309:42:133
134491320,3ptp4l0-21swapper/309:34:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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