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2026-08-15 - 20:29
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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 Sat Aug 15, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
175632760,4sleep217567-21irqrtprio08:35:192
134491730,5ptp4l0-21swapper/110:26:341
134491670,4ptp4l17489-21iostat09:45:182
924299651,61cyclictest8477-21kworker/1:207:55:081
924499607,11cyclictest0-21swapper/310:02:253
9244996052,6cyclictest6501-21phc2sys10:30:243
924499603,6cyclictest401ktimersoftd/310:30:003
9243995930,3cyclictest33-21ksoftirqd/210:48:502
924299591,55cyclictest27441-21kworker/1:010:46:291
924499587,7cyclictest0-21swapper/310:20:163
9243995823,4cyclictest33-21ksoftirqd/207:50:212
924299582,54cyclictest8477-21kworker/1:207:54:081
24792580,6sleep0924199cyclictest11:30:210
134491580,3ptp4l0-21swapper/312:05:033
924499574,6cyclictest0-21swapper/308:50:213
9243995726,3cyclictest33-21ksoftirqd/210:19:392
9243995725,4cyclictest33-21ksoftirqd/211:15:162
134491570,3ptp4l0-21swapper/209:35:052
134491570,3ptp4l0-21swapper/010:10:160
924499566,6cyclictest0-21swapper/308:45:233
9243995622,3cyclictest33-21ksoftirqd/208:00:012
9243995621,4cyclictest33-21ksoftirqd/210:35:162
134491560,3ptp4l0-21swapper/112:19:231
924499555,6cyclictest0-21swapper/309:20:213
924499553,6cyclictest6015-21cat11:40:013
924499550,3cyclictest134491ptp4l07:50:153
134491550,4ptp4l0-21swapper/010:53:590
924499544,6cyclictest0-21swapper/310:10:253
924499543,6cyclictest0-21swapper/309:35:173
924499542,6cyclictest6879-21latency_hist08:15:003
924499542,37cyclictest0-21swapper/307:29:533
9243995423,5cyclictest33-21ksoftirqd/211:50:142
134491540,4ptp4l0-21swapper/211:47:322
134491540,4ptp4l0-21swapper/211:39:322
134491540,4ptp4l0-21swapper/008:28:140
134491540,3ptp4l0-21swapper/208:10:272
134491540,3ptp4l0-21swapper/110:40:131
134491540,3ptp4l0-21swapper/011:50:240
924499537,7cyclictest0-21swapper/309:59:083
924499537,6cyclictest0-21swapper/308:29:553
924499534,6cyclictest0-21swapper/307:20:213
924499533,6cyclictest11580-21cut11:50:203
924499532,30cyclictest0-21swapper/307:12:143
924499531,6cyclictest5097-21latency_hist09:20:003
9243995325,3cyclictest33-21ksoftirqd/208:50:002
9243995323,3cyclictest33-21ksoftirqd/210:55:002
9243995323,3cyclictest33-21ksoftirqd/207:10:182
9243995319,10cyclictest33-21ksoftirqd/210:00:182
134491530,4ptp4l0-21swapper/207:27:112
134491530,4ptp4l0-21swapper/207:18:272
924499527,8cyclictest0-21swapper/312:21:343
924499527,6cyclictest0-21swapper/307:41:433
924499525,11cyclictest0-21swapper/312:25:143
924499522,35cyclictest0-21swapper/309:14:593
924499522,35cyclictest0-21swapper/307:19:583
924499521,7cyclictest401ktimersoftd/311:40:203
924499521,6cyclictest41-21ksoftirqd/311:15:273
924499521,6cyclictest1540-21cpuspeed_turbos11:30:143
924499520,6cyclictest19194-21sendmail-msp11:00:003
9243995222,4cyclictest33-21ksoftirqd/210:20:302
134491520,5ptp4l0-21swapper/212:09:382
924499517,6cyclictest0-21swapper/312:19:093
924499512,6cyclictest41-21ksoftirqd/308:35:153
924499512,24cyclictest0-21swapper/308:55:233
924499510,5cyclictest0-21swapper/311:25:013
924499510,5cyclictest0-21swapper/311:25:013
9243995127,7cyclictest33-21ksoftirqd/207:21:022
9243995122,3cyclictest33-21ksoftirqd/210:44:242
9243995121,4cyclictest33-21ksoftirqd/207:45:002
9243995118,4cyclictest33-21ksoftirqd/212:30:002
134491510,5ptp4l0-21swapper/007:05:210
134491510,5ptp4l0-21swapper/007:05:210
134491510,4ptp4l0-21swapper/209:56:092
134491510,4ptp4l0-21swapper/209:34:542
134491510,2ptp4l0-21swapper/009:41:200
134491510,11ptp4l0-21swapper/010:02:210
924499507,6cyclictest0-21swapper/309:40:593
924499507,6cyclictest0-21swapper/307:37:423
924499506,7cyclictest0-21swapper/312:00:033
924499505,11cyclictest0-21swapper/312:34:243
924499503,5cyclictest20412-21mailstats08:40:263
924499502,5cyclictest0-21swapper/308:20:213
924499501,7cyclictest41-21ksoftirqd/311:45:223
924499501,6cyclictest8477-21cut10:35:193
9243995021,4cyclictest33-21ksoftirqd/208:55:152
134491500,4ptp4l0-21swapper/212:00:302
134491500,11ptp4l0-21swapper/009:31:020
924499497,6cyclictest0-21swapper/309:02:033
924499496,7cyclictest0-21swapper/308:16:233
924499496,6cyclictest0-21swapper/308:06:233
924499494,6cyclictest20288-21sed11:00:193
924499492,7cyclictest41-21ksoftirqd/307:30:003
924499492,6cyclictest27584-21sed10:05:273
924499492,11cyclictest22091-21cat12:15:003
924499491,6cyclictest41-21ksoftirqd/310:40:153
9243994937,3cyclictest33-21ksoftirqd/212:15:182
9243994918,4cyclictest33-21ksoftirqd/207:35:282
9243994917,4cyclictest33-21ksoftirqd/211:25:002
9243994917,4cyclictest33-21ksoftirqd/211:25:002
134491490,6ptp4l0-21swapper/207:09:512
134491490,6ptp4l0-21swapper/207:09:512
134491490,4ptp4l0-21swapper/308:33:173
134491490,4ptp4l0-21swapper/308:33:173
134491490,4ptp4l0-21swapper/210:33:072
134491490,4ptp4l0-21swapper/009:48:350
134491490,10ptp4l8025-21ntp_states07:05:211
134491490,10ptp4l8025-21ntp_states07:05:211
924499487,6cyclictest0-21swapper/311:57:473
924499486,6cyclictest0-21swapper/309:46:483
924499486,6cyclictest0-21swapper/309:09:253
924499482,7cyclictest41-21ksoftirqd/309:25:203
924499482,5cyclictest0-21swapper/307:49:423
924499481,6cyclictest20706-21sed09:50:273
924399483,2cyclictest121rcu_preempt07:30:202
9243994816,7cyclictest33-21ksoftirqd/211:10:282
134491480,3ptp4l0-21swapper/110:02:071
134491480,12ptp4l0-21swapper/210:08:232
924499476,6cyclictest0-21swapper/311:06:443
924499476,6cyclictest0-21swapper/308:02:343
924499476,6cyclictest0-21swapper/307:58:123
924499476,5cyclictest0-21swapper/310:54:243
924499474,6cyclictest41-21ksoftirqd/311:25:153
924499472,7cyclictest401ktimersoftd/311:10:283
924499471,6cyclictest30837-21cpuspeed_turbos10:15:133
924399473,6cyclictest0-21swapper/212:30:242
9243994727,17cyclictest33-21ksoftirqd/209:25:002
9243994718,8cyclictest33-21ksoftirqd/211:05:232
924399470,5cyclictest14960-21fschecks_count09:40:172
134491470,3ptp4l924199cyclictest09:08:480
134491470,3ptp4l0-21swapper/210:27:532
924399462,3cyclictest121rcu_preempt09:00:152
9243994619,3cyclictest33-21ksoftirqd/211:32:502
9243994615,4cyclictest33-21ksoftirqd/209:25:202
134491460,3ptp4l924199cyclictest11:41:590
134491460,3ptp4l0-21swapper/208:52:452
134491460,3ptp4l0-21swapper/010:06:500
924499452,5cyclictest41-21ksoftirqd/312:40:013
9243994519,3cyclictest33-21ksoftirqd/208:08:042
924399450,2cyclictest121rcu_preempt12:10:262
134491450,3ptp4l0-21swapper/108:32:051
134491450,3ptp4l0-21swapper/108:32:051
134491450,10ptp4l0-21swapper/208:21:522
9243994432,3cyclictest33-21ksoftirqd/211:40:272
134491440,9ptp4l0-21swapper/110:53:261
134491440,9ptp4l0-21swapper/010:46:070
134491440,5ptp4l0-21swapper/207:45:132
134491440,11ptp4l0-21swapper/209:06:382
924499435,6cyclictest41-21ksoftirqd/310:45:273
9243994335,3cyclictest33-21ksoftirqd/210:55:242
9243994331,10cyclictest33-21ksoftirqd/208:41:292
9243994328,4cyclictest33-21ksoftirqd/208:25:142
924399432,2cyclictest121rcu_preempt10:11:512
9243994317,9cyclictest33-21ksoftirqd/208:30:192
9243994317,9cyclictest33-21ksoftirqd/208:30:192
134491430,9ptp4l0-21swapper/209:19:002
134491430,9ptp4l0-21swapper/012:29:210
134491430,9ptp4l0-21swapper/007:22:360
134491430,5ptp4l0-21swapper/011:45:200
134491430,3ptp4l0-21swapper/011:01:430
134491430,10ptp4l0-21swapper/211:04:212
924399425,3cyclictest33-21ksoftirqd/211:28:062
9243994237,3cyclictest33-21ksoftirqd/208:00:252
9243994221,13cyclictest33-21ksoftirqd/212:20:292
9241994227,12cyclictest9-21ksoftirqd/007:30:160
134491420,9ptp4l0-21swapper/008:39:300
134491420,8ptp4l19720-21latency_hist12:10:011
134491420,4ptp4l31468-21apt-get12:35:131
9243994134,3cyclictest33-21ksoftirqd/209:10:132
9243994130,3cyclictest33-21ksoftirqd/212:35:232
134491410,7ptp4l0-21swapper/307:09:563
134491410,7ptp4l0-21swapper/307:09:563
134491410,5ptp4l13888-21apt-get07:20:121
134491410,5ptp4l13426-21ntp_states09:35:230
134491410,5ptp4l0-21swapper/007:35:160
134491410,4ptp4l9485-21df07:10:131
134491410,4ptp4l7116-21apt-get08:15:120
134491410,4ptp4l32587-21ntp_states12:35:250
134491410,4ptp4l15819-21ls08:30:270
134491410,4ptp4l15819-21ls08:30:270
134491410,4ptp4l0-21swapper/109:15:141
134491410,4ptp4l0-21swapper/108:02:461
134491410,3ptp4l4820-21apt-get08:10:121
134491410,3ptp4l11955-21apt-get08:25:131
134491410,10ptp4l0-21swapper/012:20:450
9244994035,3cyclictest41-21ksoftirqd/309:30:173
9243994034,3cyclictest33-21ksoftirqd/211:55:232
9243994030,3cyclictest33-21ksoftirqd/208:18:052
924299402,37cyclictest0-21swapper/109:25:281
134491400,5ptp4l0-21swapper/011:25:020
134491400,5ptp4l0-21swapper/011:00:000
134491400,5ptp4l0-21swapper/009:25:200
134491400,5ptp4l0-21swapper/008:10:250
134491400,5ptp4l0-21swapper/008:05:160
134491400,4ptp4l6461-21ntp_states10:30:231
134491400,4ptp4l27119-21irqstats11:15:191
134491400,4ptp4l0-21swapper/110:35:151
134491400,4ptp4l0-21swapper/109:00:141
134491400,4ptp4l0-21swapper/108:05:241
134491400,4ptp4l0-21swapper/107:15:111
134491400,4ptp4l0-21swapper/010:40:230
134491400,4ptp4l0-21swapper/009:50:510
134491400,4ptp4l0-21swapper/008:40:270
134491400,4ptp4l0-21swapper/008:04:200
134491400,3ptp4l24580-21apt-get12:20:131
134491400,3ptp4l0-21swapper/112:25:191
9243993934,3cyclictest33-21ksoftirqd/209:50:142
9242993926,4cyclictest25-21ksoftirqd/108:37:521
134491390,5ptp4l21769-21cat11:05:130
134491390,5ptp4l0-21swapper/011:40:010
134491390,5ptp4l0-21swapper/008:50:260
134491390,5ptp4l0-21swapper/007:50:260
134491390,4ptp4l13548-21/usr/sbin/munin11:55:161
134491390,4ptp4l0-21swapper/111:20:161
134491390,4ptp4l0-21swapper/111:20:161
134491390,4ptp4l0-21swapper/111:05:141
134491390,4ptp4l0-21swapper/110:58:491
134491390,4ptp4l0-21swapper/109:10:041
134491390,4ptp4l0-21swapper/108:40:221
134491390,4ptp4l0-21swapper/011:55:230
134491390,4ptp4l0-21swapper/010:25:270
134491390,4ptp4l0-21swapper/009:55:240
134491390,4ptp4l0-21swapper/009:16:170
134491390,4ptp4l0-21swapper/008:45:580
134491390,4ptp4l0-21swapper/008:20:220
134491390,4ptp4l0-21swapper/007:45:220
134491390,4ptp4l0-21swapper/007:16:410
134491390,3ptp4l30118-21meminfo12:30:201
134491390,3ptp4l29654-21irqstats11:20:190
134491390,3ptp4l29654-21irqstats11:20:190
134491390,3ptp4l29296-21ls09:00:200
134491390,3ptp4l18679-21ls12:05:200
134491390,3ptp4l0-21swapper/007:10:190
134491390,2ptp4l9445-21apt-get08:20:131
9242993812,23cyclictest22033-21awk09:55:171
134491380,6ptp4l441-21in:imuxsock09:09:551
134491380,5ptp4l0-21swapper/112:10:161
134491380,4ptp4l5997-21irqrtprio10:30:190
134491380,4ptp4l26553-21df_abs11:15:140
134491380,4ptp4l24131-21cpuspeed_turbos11:10:141
134491380,4ptp4l0-21swapper/111:35:171
134491380,4ptp4l0-21swapper/111:25:171
134491380,4ptp4l0-21swapper/110:19:201
134491380,4ptp4l0-21swapper/109:50:531
134491380,4ptp4l0-21swapper/109:38:091
134491380,4ptp4l0-21swapper/109:30:251
134491380,4ptp4l0-21swapper/108:58:551
134491380,4ptp4l0-21swapper/107:40:191
134491380,4ptp4l0-21swapper/107:39:561
134491380,4ptp4l0-21swapper/012:30:190
134491380,4ptp4l0-21swapper/012:15:300
134491380,4ptp4l0-21swapper/012:10:220
134491380,4ptp4l0-21swapper/012:00:150
134491380,4ptp4l0-21swapper/010:23:060
134491380,4ptp4l0-21swapper/009:10:020
134491380,4ptp4l0-21swapper/008:55:110
134491380,4ptp4l0-21swapper/007:57:050
134491380,4ptp4l0-21swapper/007:40:230
134491380,4ptp4l0-21swapper/007:27:270
134491380,3ptp4l23667-21apt-get08:50:121
134491380,3ptp4l0-21swapper/010:15:200
134491380,3ptp4l0-21swapper/009:20:110
134491370,4ptp4l7830-21vmstat11:40:291
134491370,4ptp4l0-21swapper/111:54:111
134491370,4ptp4l0-21swapper/111:30:351
134491370,4ptp4l0-21swapper/111:00:131
134491370,4ptp4l0-21swapper/110:10:111
134491370,4ptp4l0-21swapper/109:46:071
134491370,4ptp4l0-21swapper/109:20:141
134491370,4ptp4l0-21swapper/108:45:101
134491370,4ptp4l0-21swapper/108:15:081
134491370,4ptp4l0-21swapper/107:49:381
134491370,4ptp4l0-21swapper/011:10:160
134491370,4ptp4l0-21swapper/010:35:170
134491370,3ptp4l0-21swapper/112:00:271
134491370,3ptp4l0-21swapper/110:20:071
134491370,3ptp4l0-21swapper/110:05:211
134491370,3ptp4l0-21swapper/109:40:081
134491370,3ptp4l0-21swapper/107:32:481
134491360,4ptp4l0-21swapper/107:25:121
134491360,3ptp4l0-21swapper/111:45:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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