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2026-07-04 - 02:55
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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 Fri Jul 03, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
642121650,3sleep32198299cyclictest08:55:183
21979997910,24cyclictest30310-21cat07:25:260
2198299681,33cyclictest32677-21runrttasks12:09:033
2198299680,29cyclictest21940-21seq09:28:213
2198299663,30cyclictest0-21swapper/311:08:343
2198299650,33cyclictest22281-21seq10:38:053
21980996512,26cyclictest619-21awk08:40:301
2198299641,35cyclictest5547-21seq08:52:383
2198299640,34cyclictest29280-21runrttasks10:54:183
2198299610,35cyclictest12632-21runrttasks10:17:543
2198299610,26cyclictest10102-21chrt09:01:523
134491600,5ptp4l0-21swapper/311:04:493
73432590,3sleep00-21swapper/007:45:270
134491580,4ptp4l0-21swapper/112:28:411
134491580,3ptp4l0-21swapper/211:04:522
2198299570,29cyclictest9280-21chrt12:25:393
2198299570,26cyclictest26603-21taskset07:20:063
2198299570,26cyclictest26603-21taskset07:20:063
134491570,4ptp4l0-21swapper/010:06:250
134491570,4ptp4l0-21swapper/007:05:120
2198299550,26cyclictest21115-21chrt11:44:033
2198299550,18cyclictest134491ptp4l12:00:143
134491550,3ptp4l0-21swapper/111:53:571
134491550,3ptp4l0-21swapper/011:56:250
134491550,11ptp4l20214-21iostat_ios07:05:171
2198299540,25cyclictest28777-21seq08:34:293
2198199542,35cyclictest0-21swapper/212:25:172
2198299532,23cyclictest0-21swapper/310:47:293
2198299530,25cyclictest25505-21chrt11:51:213
2198199532,34cyclictest0-21swapper/209:05:212
2198299520,25cyclictest10273-21seq10:12:083
2198199522,6cyclictest0-21swapper/208:05:182
2198299516,19cyclictest13818-21taskset11:29:593
2198299513,20cyclictest0-21swapper/309:42:023
2198299511,23cyclictest18087-21fschecks_count09:20:163
2198199512,35cyclictest0-21swapper/208:55:152
2198199512,31cyclictest0-21swapper/209:40:202
2198299502,30cyclictest0-21swapper/308:17:343
2198299502,21cyclictest0-21swapper/309:58:183
2198299502,20cyclictest0-21swapper/307:29:193
2198199502,7cyclictest0-21swapper/207:45:272
2198199502,32cyclictest0-21swapper/210:15:242
2198199502,31cyclictest0-21swapper/210:55:322
134491500,3ptp4l0-21swapper/112:32:451
134491500,3ptp4l0-21swapper/112:32:451
2198299492,36cyclictest0-21swapper/312:18:443
2198299491,20cyclictest1317-21runrttasks09:38:453
2198199492,6cyclictest0-21swapper/211:10:262
2198199492,6cyclictest0-21swapper/209:30:142
2198199492,31cyclictest0-21swapper/207:10:142
2198299480,28cyclictest14169-21taskset12:39:293
2198299480,25cyclictest12415-21taskset07:56:353
2198299480,22cyclictest12424-21taskset09:07:113
2198199482,6cyclictest0-21swapper/208:30:132
21981994826,6cyclictest33-21ksoftirqd/210:14:562
2198199482,5cyclictest0-21swapper/207:55:412
2198199482,31cyclictest0-21swapper/210:20:142
2198199482,30cyclictest0-21swapper/210:50:122
134691480,1getstats1019-1kworker/3:0H11:20:093
134491480,3ptp4l0-21swapper/111:22:211
134491480,3ptp4l0-21swapper/110:24:041
2198299473,20cyclictest0-21swapper/311:11:313
2198299472,20cyclictest0-21swapper/308:11:273
2198299470,23cyclictest16990-21taskset08:06:023
21981994743,2cyclictest311rcuc/211:50:132
2198199472,6cyclictest33-21ksoftirqd/208:20:432
2198199472,31cyclictest0-21swapper/209:20:282
2198199472,28cyclictest0-21swapper/209:35:152
134691470,1getstats31807-1kworker/2:2H11:05:072
134491470,4ptp4l2197999cyclictest10:23:510
134491470,4ptp4l0-21swapper/110:52:001
134491470,4ptp4l0-21swapper/109:22:291
134491470,4ptp4l0-21swapper/108:12:211
134491470,3ptp4l0-21swapper/212:07:402
134491470,3ptp4l0-21swapper/109:31:581
134491470,13ptp4l0-21swapper/008:42:330
134491470,12ptp4l0-21swapper/011:28:440
2198299462,29cyclictest0-21swapper/312:11:493
2198299462,29cyclictest0-21swapper/308:03:093
2198299461,25cyclictest835-21taskset08:42:123
2198299461,24cyclictest134691getstats07:36:143
2198299460,33cyclictest3140-21taskset08:46:093
2198299460,24cyclictest23236-21runrttasks11:46:423
2198299460,24cyclictest23236-21runrttasks11:46:413
2198299460,23cyclictest24140-21taskset08:23:593
2198199464,8cyclictest33-21ksoftirqd/207:31:262
2198199463,6cyclictest33-21ksoftirqd/210:35:192
2198199462,6cyclictest33-21ksoftirqd/210:45:272
2198199462,30cyclictest0-21swapper/208:10:122
2198199461,8cyclictest0-21swapper/212:03:052
134491460,3ptp4l0-21swapper/112:07:101
134491460,3ptp4l0-21swapper/110:16:171
134491460,3ptp4l0-21swapper/110:12:351
134491460,12ptp4l0-21swapper/008:55:170
2198299452,30cyclictest0-21swapper/309:34:073
2198299450,22cyclictest26020-21taskset07:15:523
2198299450,22cyclictest26020-21taskset07:15:513
2198299450,22cyclictest23912-21taskset07:13:183
2198299450,22cyclictest19775-21taskset10:33:123
2198299450,22cyclictest17555-21taskset10:29:113
2198199453,6cyclictest0-21swapper/209:10:202
2198199453,6cyclictest0-21swapper/209:10:202
2198199452,5cyclictest33-21ksoftirqd/207:41:522
2198199452,5cyclictest0-21swapper/211:20:162
134491450,9ptp4l0-21swapper/011:01:340
134491450,5ptp4l11777-21apt-get11:25:122
134491450,4ptp4l30472-21python08:35:260
134491450,4ptp4l0-21swapper/110:45:541
134491450,3ptp4l0-21swapper/111:15:201
134491450,3ptp4l0-21swapper/109:43:401
2198299440,22cyclictest14680-21taskset09:11:413
2198299440,22cyclictest14680-21taskset09:11:413
2198299440,21cyclictest31079-21runrttasks09:46:433
2198199442,7cyclictest0-21swapper/209:00:312
21981994423,3cyclictest33-21ksoftirqd/212:39:452
2198199440,6cyclictest33-21ksoftirqd/207:39:382
134491440,6ptp4l17151-21iostat_ios11:35:180
134491440,5ptp4l2197999cyclictest12:15:350
134491440,4ptp4l16606-21ls10:25:242
134491440,4ptp4l0-21swapper/111:46:571
134491440,4ptp4l0-21swapper/111:46:561
134491440,3ptp4l0-21swapper/211:45:062
134491440,3ptp4l0-21swapper/211:45:062
134491440,3ptp4l0-21swapper/111:03:571
134491440,3ptp4l0-21swapper/108:45:321
2198299431,25cyclictest1301-21snmpd10:57:043
2198299431,21cyclictest1317-21runrttasks10:02:443
2198299430,30cyclictest1317-21runrttasks07:54:423
2198299430,23cyclictest7896-21taskset07:47:323
2198299430,22cyclictest30882-21taskset08:36:223
21981994340,2cyclictest311rcuc/211:15:182
2198199432,7cyclictest0-21swapper/210:30:182
2198199432,5cyclictest0-21swapper/209:49:332
2198199432,5cyclictest0-21swapper/208:15:232
2198199431,6cyclictest33-21ksoftirqd/211:41:462
21979994337,4cyclictest9-21ksoftirqd/008:00:000
134491430,9ptp4l0-21swapper/008:06:520
134491430,5ptp4l7899-21memory11:15:223
134491430,5ptp4l0-21swapper/011:15:170
134491430,4ptp4l13117-21df09:10:130
134491430,4ptp4l13117-21df09:10:130
134491430,10ptp4l0-21swapper/012:30:430
134491430,10ptp4l0-21swapper/012:30:430
2198299422,28cyclictest0-21swapper/307:32:053
2198299420,31cyclictest932-21taskset09:51:283
2198299420,22cyclictest15268-21taskset10:24:183
2198299420,21cyclictest5686-21runrttasks07:43:393
2198199425,5cyclictest33-21ksoftirqd/207:50:252
2198199425,3cyclictest33-21ksoftirqd/209:25:272
2198199420,5cyclictest33-21ksoftirqd/212:34:082
2198199420,5cyclictest33-21ksoftirqd/212:34:082
2198199420,5cyclictest33-21ksoftirqd/210:04:402
21980994224,16cyclictest25-21ksoftirqd/111:55:121
134491420,9ptp4l0-21swapper/011:54:450
134491420,5ptp4l0-21swapper/011:20:030
134491420,5ptp4l0-21swapper/007:15:120
134491420,5ptp4l0-21swapper/007:15:120
134491420,4ptp4l6261-21df07:45:151
134491420,4ptp4l6164-21apt-get10:05:132
134491420,4ptp4l4084-21ntp_states12:15:232
134491420,4ptp4l2318-21gnome-shell09:47:591
134491420,4ptp4l21233-21irqstats10:35:200
134491420,4ptp4l14957-21apt-get09:15:033
134491420,4ptp4l14957-21apt-get09:15:033
134491420,4ptp4l0-21swapper/010:25:230
134491420,3ptp4l5288-21apt-get12:20:121
134491420,3ptp4l26051-21apt-get11:55:123
134491420,3ptp4l2197999cyclictest07:33:230
2198299412,23cyclictest0-21swapper/308:27:123
2198299410,22cyclictest7240-21taskset12:23:573
2198199412,6cyclictest0-21swapper/211:55:162
2198199412,5cyclictest0-21swapper/211:35:242
2198199412,3cyclictest33-21ksoftirqd/207:20:102
2198199412,3cyclictest33-21ksoftirqd/207:20:102
134491410,9ptp4l0-21swapper/012:02:370
134491410,5ptp4l0-21swapper/207:15:212
134491410,5ptp4l0-21swapper/207:15:212
134491410,5ptp4l0-21swapper/012:24:590
134491410,5ptp4l0-21swapper/010:55:270
134491410,5ptp4l0-21swapper/007:10:140
134491410,4ptp4l4958-21diskstats11:10:151
134491410,4ptp4l31273-21apt-get07:30:121
134491410,4ptp4l29228-21diskstats07:25:152
134491410,4ptp4l25219-21df10:45:130
134491410,4ptp4l15024-21memory11:30:212
134491410,4ptp4l12964-21apt-get08:00:112
134491410,4ptp4l12324-21ls10:15:300
134491410,4ptp4l0-21swapper/311:35:283
134491410,4ptp4l0-21swapper/311:30:163
134491410,4ptp4l0-21swapper/310:05:593
134491410,4ptp4l0-21swapper/108:05:131
134491410,4ptp4l0-21swapper/107:50:181
134491410,4ptp4l0-21swapper/010:03:480
134491410,4ptp4l0-21swapper/009:50:290
134491410,4ptp4l0-21swapper/009:37:400
134491410,4ptp4l0-21swapper/007:50:230
134491410,4ptp4l0-21swapper/007:35:220
134491410,3ptp4l576-21apt-get12:10:122
134491410,3ptp4l3777-21ls11:05:290
2198299400,25cyclictest11717-21taskset12:32:283
2198299400,25cyclictest11717-21taskset12:32:283
2198199402,5cyclictest0-21swapper/209:51:312
2198199401,8cyclictest33-21ksoftirqd/208:43:392
134491400,4ptp4l22032-21iostat_ios11:45:190
134491400,4ptp4l22032-21iostat_ios11:45:190
134491400,4ptp4l0-21swapper/111:30:021
134491400,4ptp4l0-21swapper/111:28:131
134491400,4ptp4l0-21swapper/108:21:441
134491400,4ptp4l0-21swapper/012:29:290
134491400,4ptp4l0-21swapper/012:14:210
134491400,4ptp4l0-21swapper/012:05:180
134491400,4ptp4l0-21swapper/011:41:450
134491400,4ptp4l0-21swapper/011:30:140
134491400,4ptp4l0-21swapper/010:40:460
134491400,4ptp4l0-21swapper/009:40:050
134491400,4ptp4l0-21swapper/009:22:080
134491400,4ptp4l0-21swapper/007:40:250
134491400,4ptp4l0-21swapper/007:20:250
134491400,4ptp4l0-21swapper/007:20:250
134491400,3ptp4l5264-21ls08:50:272
134491400,3ptp4l2334-21meminfo08:45:200
134491400,3ptp4l22756-21iostat_ios08:20:170
134491400,3ptp4l1301-21snmpd10:42:423
134491400,3ptp4l0-21swapper/107:55:231
134491400,3ptp4l0-21swapper/010:11:480
2198199392,6cyclictest0-21swapper/208:45:112
2198199392,4cyclictest0-21swapper/210:40:252
21979993933,4cyclictest9-21ksoftirqd/008:00:100
134491390,5ptp4l0-21swapper/108:53:131
134491390,4ptp4l0-21swapper/208:35:232
134491390,4ptp4l0-21swapper/112:10:201
134491390,4ptp4l0-21swapper/110:44:041
134491390,4ptp4l0-21swapper/110:36:531
134491390,4ptp4l0-21swapper/107:28:271
134491390,4ptp4l0-21swapper/107:20:571
134491390,4ptp4l0-21swapper/107:20:571
134491390,4ptp4l0-21swapper/012:35:160
134491390,4ptp4l0-21swapper/011:10:140
134491390,4ptp4l0-21swapper/010:54:010
134491390,4ptp4l0-21swapper/010:33:460
134491390,4ptp4l0-21swapper/009:59:100
134491390,4ptp4l0-21swapper/009:45:060
134491390,4ptp4l0-21swapper/009:03:540
134491390,4ptp4l0-21swapper/008:31:250
134491390,4ptp4l0-21swapper/008:15:210
134491390,4ptp4l0-21swapper/008:10:230
134491390,3ptp4l4195-21if_enp1s008:50:150
134491390,3ptp4l25596-21ntp_states08:25:252
134491390,3ptp4l16673-21/usr/sbin/munin09:15:242
134491390,3ptp4l16673-21/usr/sbin/munin09:15:242
134491390,3ptp4l0-21swapper/108:32:041
134491390,3ptp4l0-21swapper/009:16:190
134491390,3ptp4l0-21swapper/009:16:190
134491390,3ptp4l0-21swapper/008:25:110
21981993833,3cyclictest33-21ksoftirqd/209:58:412
134491380,4ptp4l0-21swapper/111:09:061
134491380,4ptp4l0-21swapper/110:55:151
134491380,4ptp4l0-21swapper/109:38:331
134491380,4ptp4l0-21swapper/109:10:131
134491380,4ptp4l0-21swapper/109:10:131
134491380,4ptp4l0-21swapper/108:59:411
134491380,4ptp4l0-21swapper/107:42:261
134491380,4ptp4l0-21swapper/107:17:131
134491380,4ptp4l0-21swapper/107:17:121
134491380,4ptp4l0-21swapper/107:10:491
134491380,4ptp4l0-21swapper/009:27:020
134491380,3ptp4l0-21swapper/212:20:002
134491380,3ptp4l0-21swapper/112:17:461
134491380,3ptp4l0-21swapper/112:01:201
134491380,3ptp4l0-21swapper/111:40:161
134491380,3ptp4l0-21swapper/111:37:021
134491380,3ptp4l0-21swapper/110:25:441
134491380,3ptp4l0-21swapper/110:05:051
134491380,3ptp4l0-21swapper/109:03:411
134491380,3ptp4l0-21swapper/108:25:051
21980993731,4cyclictest25-21ksoftirqd/108:35:381
21980993730,4cyclictest25-21ksoftirqd/108:18:571
134491370,4ptp4l0-21swapper/110:30:421
134491370,4ptp4l0-21swapper/107:35:411
134491370,4ptp4l0-21swapper/009:35:010
134491370,3ptp4l0-21swapper/112:36:021
134491370,3ptp4l0-21swapper/108:04:051
134491370,3ptp4l0-21swapper/009:07:250
21980993530,3cyclictest25-21ksoftirqd/109:29:311
2198099330,3cyclictest2058-21iostat09:55:161
134491330,3ptp4l0-21swapper/109:07:041
21980993225,4cyclictest25-21ksoftirqd/109:53:331
2198099311,3cyclictest15626-21df09:15:131
2198099311,3cyclictest15626-21df09:15:131
2198099310,3cyclictest5396-21timerwakeupswit10:00:281
1378912819,3phc2sys33-21ksoftirqd/207:10:002
137891194,8phc2sys0-21swapper/307:05:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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