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2026-06-30 - 23:30
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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 Tue Jun 30, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2064521340,3sleep20-21swapper/211:00:212
966099643,17cyclictest0-21swapper/312:20:253
966099632,16cyclictest0-21swapper/311:40:173
966099623,17cyclictest0-21swapper/310:20:013
194262620,7sleep1965899cyclictest11:00:001
134491620,4ptp4l10073-21apt-get08:20:131
966099617,11cyclictest0-21swapper/310:55:013
134491610,4ptp4l0-21swapper/007:25:230
134491600,4ptp4l32192-21meminfo10:15:210
134491600,4ptp4l10258-21iostat_ios07:10:171
134491600,3ptp4l0-21swapper/007:20:190
966099592,15cyclictest0-21swapper/309:50:253
134491590,4ptp4l0-21swapper/108:15:201
134491580,3ptp4l11912-21unixbench_singl09:30:273
9660995711,15cyclictest24415-21if_enp1s008:50:173
966099560,15cyclictest21311-21sed11:00:293
9659995620,5cyclictest33-21ksoftirqd/211:17:542
134491560,3ptp4l0-21swapper/008:35:400
134491550,4ptp4l0-21swapper/207:32:082
134491550,4ptp4l0-21swapper/108:57:241
134491550,3ptp4l0-21swapper/212:15:222
134491550,3ptp4l0-21swapper/108:43:431
966099540,9cyclictest23461-21latency_hist07:40:013
966099540,12cyclictest21542-21latency_hist08:45:003
299162540,3sleep20-21swapper/210:10:222
134491540,4ptp4l0-21swapper/208:45:132
134491540,4ptp4l0-21swapper/109:21:221
134491540,4ptp4l0-21swapper/008:23:420
134491540,4ptp4l0-21swapper/007:54:120
134491540,3ptp4l0-21swapper/312:15:273
134491540,3ptp4l0-21swapper/107:30:501
966099533,47cyclictest0-21swapper/311:50:133
966099533,10cyclictest0-21swapper/308:05:013
966099530,9cyclictest5057-21cut11:35:233
966099530,11cyclictest16080-21chrt07:20:573
966099530,11cyclictest15747-21irqrtprio09:40:193
134491530,4ptp4l0-21swapper/209:10:502
966099522,10cyclictest0-21swapper/308:20:263
966099520,16cyclictest2857-21cat11:30:283
966099520,12cyclictest1417-21cut09:10:193
966099520,11cyclictest31254-21chrt12:31:403
134491520,4ptp4l0-21swapper/210:37:452
134491520,4ptp4l0-21swapper/210:37:452
134491520,4ptp4l0-21swapper/209:28:192
134491520,4ptp4l0-21swapper/108:04:391
134491520,4ptp4l0-21swapper/107:54:131
134491520,4ptp4l0-21swapper/011:18:120
134491520,3ptp4l0-21swapper/010:58:350
134491520,3ptp4l0-21swapper/008:40:580
134491520,3ptp4l0-21swapper/008:10:190
966099513,9cyclictest0-21swapper/312:40:013
966099512,10cyclictest0-21swapper/308:55:273
966099510,19cyclictest6904-21sed09:20:263
966099510,11cyclictest16596-21taskset08:32:583
9659995120,4cyclictest33-21ksoftirqd/207:45:002
134491510,4ptp4l0-21swapper/209:59:252
134491510,4ptp4l0-21swapper/110:45:281
134491510,4ptp4l0-21swapper/108:13:071
134491510,4ptp4l0-21swapper/009:55:560
134491510,3ptp4l0-21swapper/109:25:071
134491510,3ptp4l0-21swapper/011:12:370
966099501,12cyclictest25352-21chrt07:41:483
966099500,16cyclictest5673-21df_abs08:10:123
9659995016,12cyclictest33-21ksoftirqd/208:22:202
134491500,4ptp4l965999cyclictest12:11:332
134491500,4ptp4l0-21swapper/209:42:202
134491500,4ptp4l0-21swapper/111:22:261
134491500,4ptp4l0-21swapper/009:04:010
134491500,3ptp4l0-21swapper/211:22:352
134491500,3ptp4l0-21swapper/210:27:252
134491500,3ptp4l0-21swapper/207:35:002
134491500,3ptp4l0-21swapper/109:05:111
134491500,3ptp4l0-21swapper/009:30:200
966099491,12cyclictest13488-21cat09:35:203
966099490,11cyclictest9437-21taskset08:15:343
966099490,11cyclictest14129-21irqrtprio11:55:193
9659994918,14cyclictest33-21ksoftirqd/210:44:292
134491490,5ptp4l0-21swapper/107:06:471
134491490,4ptp4l0-21swapper/212:05:052
134491490,4ptp4l0-21swapper/008:15:040
134491490,3ptp4l0-21swapper/007:05:170
134491490,14ptp4l19837-21diskstats09:50:152
134491490,12ptp4l0-21swapper/210:04:072
966099486,6cyclictest137891phc2sys07:33:453
966099482,16cyclictest0-21swapper/312:10:223
966099480,12cyclictest25705-21ps11:10:253
9659994836,10cyclictest33-21ksoftirqd/212:30:182
134491480,4ptp4l0-21swapper/207:15:442
134491480,4ptp4l0-21swapper/107:29:291
134491480,3ptp4l0-21swapper/211:29:302
134491480,3ptp4l0-21swapper/210:06:502
134491480,3ptp4l0-21swapper/011:49:160
134491480,3ptp4l0-21swapper/008:00:560
134491480,11ptp4l0-21swapper/211:35:492
966099470,10cyclictest32565-21taskset07:58:173
134491470,4ptp4l0-21swapper/108:46:361
134491470,4ptp4l0-21swapper/011:00:250
966099465,11cyclictest0-21swapper/310:20:323
966099465,11cyclictest0-21swapper/308:36:373
966099463,10cyclictest0-21swapper/310:55:283
966099462,10cyclictest0-21swapper/310:10:183
9659994617,6cyclictest33-21ksoftirqd/212:35:222
9659994616,4cyclictest33-21ksoftirqd/208:40:182
134491460,7ptp4l17957-21ls08:35:202
134491460,4ptp4l0-21swapper/210:49:412
134491460,4ptp4l0-21swapper/009:09:340
134491460,3ptp4l0-21swapper/010:48:060
134491460,3ptp4l0-21swapper/007:40:250
134491460,14ptp4l0-21swapper/110:27:511
966099450,11cyclictest7827-21taskset10:34:373
9659994516,4cyclictest33-21ksoftirqd/208:55:162
9659994516,4cyclictest33-21ksoftirqd/208:17:192
9659994515,3cyclictest33-21ksoftirqd/212:20:192
9659994515,3cyclictest33-21ksoftirqd/209:30:282
9659994514,3cyclictest33-21ksoftirqd/208:05:002
9659994511,7cyclictest33-21ksoftirqd/211:55:012
9659994511,6cyclictest33-21ksoftirqd/208:50:282
134491450,4ptp4l0-21swapper/212:27:032
134491450,4ptp4l0-21swapper/107:47:211
134491450,4ptp4l0-21swapper/011:40:130
134491450,3ptp4l0-21swapper/209:05:022
9659994426,5cyclictest33-21ksoftirqd/211:45:002
9659994416,6cyclictest33-21ksoftirqd/212:00:132
9659994411,5cyclictest33-21ksoftirqd/210:15:202
9659994410,7cyclictest33-21ksoftirqd/208:25:132
134491440,4ptp4l17327-21diskstats08:35:151
134491440,4ptp4l0-21swapper/310:05:173
134491440,4ptp4l0-21swapper/108:33:091
134491440,4ptp4l0-21swapper/107:37:461
134491440,3ptp4l0-21swapper/110:01:561
134491440,3ptp4l0-21swapper/108:27:451
134491440,3ptp4l0-21swapper/107:22:391
134491440,3ptp4l0-21swapper/008:06:170
965999439,9cyclictest33-21ksoftirqd/211:45:202
9659994339,3cyclictest33-21ksoftirqd/207:15:012
9659994313,6cyclictest33-21ksoftirqd/209:35:202
9659994313,3cyclictest33-21ksoftirqd/208:30:132
9659994311,8cyclictest33-21ksoftirqd/211:05:252
9659994311,8cyclictest33-21ksoftirqd/211:05:252
9659994310,6cyclictest33-21ksoftirqd/210:55:242
134491430,9ptp4l0-21swapper/207:29:552
134491430,4ptp4l30975-21diskstats07:55:140
134491430,4ptp4l15029-21apt-get10:50:110
134491430,4ptp4l0-21swapper/012:37:170
134491430,4ptp4l0-21swapper/011:25:210
134491430,3ptp4l30667-21apt-get07:55:111
134491430,3ptp4l0-21swapper/011:33:300
134491430,10ptp4l0-21swapper/111:01:511
966099420,11cyclictest10424-21/usr/sbin/munin10:40:183
965999429,4cyclictest33-21ksoftirqd/211:10:172
9659994237,3cyclictest33-21ksoftirqd/209:50:012
9659994237,3cyclictest33-21ksoftirqd/207:21:592
9659994236,3cyclictest33-21ksoftirqd/209:05:012
9659994225,14cyclictest33-21ksoftirqd/209:25:002
9658994237,3cyclictest25-21ksoftirqd/111:40:001
9658994236,3cyclictest25-21ksoftirqd/110:20:011
134491420,9ptp4l0-21swapper/207:49:482
134491420,9ptp4l0-21swapper/012:16:070
134491420,5ptp4l0-21swapper/312:05:193
134491420,5ptp4l0-21swapper/012:00:270
134491420,4ptp4l26792-21apt-get11:15:113
134491420,4ptp4l15779-21irqstats09:40:200
134491420,3ptp4l12923-21ls07:15:191
134491420,3ptp4l1283-21apt-get11:30:132
966099410,12cyclictest18941-21taskset09:45:473
965999419,6cyclictest33-21ksoftirqd/211:55:172
9659994136,3cyclictest33-21ksoftirqd/207:55:272
9659994136,2cyclictest33-21ksoftirqd/208:05:012
9659994117,8cyclictest33-21ksoftirqd/210:51:082
9659994112,5cyclictest33-21ksoftirqd/207:50:282
9658994136,3cyclictest25-21ksoftirqd/112:35:001
134491410,7ptp4l29962-21kernelversion11:20:180
134491410,5ptp4l3820-21df_inode10:25:150
134491410,5ptp4l27502-21/usr/sbin/munin08:55:280
134491410,5ptp4l0-21swapper/309:25:033
134491410,5ptp4l0-21swapper/109:00:181
134491410,4ptp4l26305-21ls12:20:270
134491410,4ptp4l26168-21df_inode07:45:150
134491410,4ptp4l23295-21users08:45:270
134491410,4ptp4l2108-21ls10:20:192
134491410,4ptp4l20071-21ntp_states07:30:230
134491410,4ptp4l11942-21ls11:50:200
134491410,4ptp4l0-21swapper/307:27:463
134491410,4ptp4l0-21swapper/111:45:351
134491410,4ptp4l0-21swapper/108:09:471
134491410,4ptp4l0-21swapper/010:44:180
134491410,4ptp4l0-21swapper/010:04:000
134491410,3ptp4l13482-21ntp_states08:25:220
966099400,9cyclictest14302-21ls10:45:283
966099400,7cyclictest25255-21ntp_states10:00:233
966099400,11cyclictest4842-21taskset08:05:333
9658994035,3cyclictest25-21ksoftirqd/112:00:011
134491400,8ptp4l0-21swapper/111:19:361
134491400,5ptp4l18184-21df12:05:131
134491400,5ptp4l0-21swapper/312:00:173
134491400,5ptp4l0-21swapper/307:16:483
134491400,5ptp4l0-21swapper/012:07:350
134491400,4ptp4l21388-21ntp_states12:10:231
134491400,4ptp4l0-21swapper/311:20:143
134491400,4ptp4l0-21swapper/308:45:473
134491400,4ptp4l0-21swapper/209:16:042
134491400,4ptp4l0-21swapper/111:14:021
134491400,4ptp4l0-21swapper/109:54:341
134491400,4ptp4l0-21swapper/108:50:141
134491400,4ptp4l0-21swapper/007:20:010
134491400,4ptp4l0-21swapper/007:11:530
134491400,3ptp4l21557-21diskstats07:35:160
9660993934,3cyclictest41-21ksoftirqd/310:35:143
9660993934,3cyclictest41-21ksoftirqd/310:35:143
966099390,7cyclictest13546-21phc2sys-jitter08:25:243
9659993933,4cyclictest33-21ksoftirqd/210:34:132
965999391,2cyclictest121rcu_preempt08:10:102
9658993934,3cyclictest25-21ksoftirqd/112:00:131
9658993934,3cyclictest25-21ksoftirqd/111:10:001
9658993934,3cyclictest25-21ksoftirqd/111:10:001
9658993934,3cyclictest25-21ksoftirqd/109:15:261
134491390,5ptp4l0-21swapper/312:25:133
134491390,5ptp4l0-21swapper/110:50:111
134491390,5ptp4l0-21swapper/109:35:121
134491390,5ptp4l0-21swapper/011:59:090
134491390,4ptp4l9826-21ntp_states11:45:233
134491390,4ptp4l9212-21/usr/sbin/munin09:25:250
134491390,4ptp4l1459-21df_inode10:20:140
134491390,4ptp4l11387-21memory10:40:201
134491390,4ptp4l0-21swapper/309:01:193
134491390,4ptp4l0-21swapper/111:50:271
134491390,4ptp4l0-21swapper/111:40:271
134491390,4ptp4l0-21swapper/012:30:540
134491390,4ptp4l0-21swapper/009:45:190
134491390,4ptp4l0-21swapper/008:50:220
134491390,3ptp4l436-21ntp_states12:35:241
134491390,3ptp4l29518-21iostat_ios10:10:201
134491390,3ptp4l0-21swapper/009:35:160
134491390,3ptp4l0-21swapper/008:30:040
966099380,11cyclictest30304-21taskset07:53:393
9658993833,3cyclictest25-21ksoftirqd/110:05:181
134491380,5ptp4l24152-21ps07:40:191
134491380,5ptp4l0-21swapper/309:15:123
134491380,5ptp4l0-21swapper/109:46:011
134491380,4ptp4l22945-21ntp_states09:55:253
134491380,4ptp4l0-21swapper/311:29:013
134491380,4ptp4l0-21swapper/311:05:203
134491380,4ptp4l0-21swapper/311:05:203
134491380,4ptp4l0-21swapper/309:05:193
134491380,4ptp4l0-21swapper/111:30:121
134491380,4ptp4l0-21swapper/111:29:571
134491380,4ptp4l0-21swapper/110:31:031
134491380,4ptp4l0-21swapper/110:20:491
134491380,4ptp4l0-21swapper/109:32:571
134491380,4ptp4l0-21swapper/012:25:390
134491380,4ptp4l0-21swapper/012:10:510
134491380,4ptp4l0-21swapper/011:36:370
134491380,4ptp4l0-21swapper/010:33:070
134491380,4ptp4l0-21swapper/010:10:010
134491380,4ptp4l0-21swapper/010:09:160
134491380,4ptp4l0-21swapper/009:52:470
134491380,4ptp4l0-21swapper/009:20:290
134491380,4ptp4l0-21swapper/009:10:260
134491380,3ptp4l8539-21hddtemp_smartct10:35:150
134491380,3ptp4l8539-21hddtemp_smartct10:35:150
134491380,3ptp4l3297-21df09:15:150
134491380,3ptp4l0-21swapper/310:27:053
9660993731,4cyclictest41-21ksoftirqd/307:14:273
134491370,4ptp4l0-21swapper/109:59:351
134491370,4ptp4l0-21swapper/109:40:251
134491370,4ptp4l0-21swapper/109:11:241
134491370,4ptp4l0-21swapper/011:05:250
134491370,4ptp4l0-21swapper/011:05:250
134491370,3ptp4l0-21swapper/110:35:191
134491370,3ptp4l0-21swapper/110:35:191
134491360,3ptp4l0-21swapper/112:21:591
134491350,3ptp4l0-21swapper/112:29:341
966099340,12cyclictest27712-21taskset07:47:373
9658993328,3cyclictest25-21ksoftirqd/112:15:111
87402235,10sleep30-21swapper/307:05:263
86002133,5sleep20-21swapper/207:05:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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