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2026-08-23 - 16:44
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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 Sun Aug 23, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3184021870,6sleep184099cyclictest09:25:141
2570621350,5sleep284199cyclictest11:30:152
122321320,5sleep384299cyclictest07:10:153
841997124,9cyclictest33-21ksoftirqd/212:00:272
108262660,4sleep10-21swapper/112:05:281
134491630,4ptp4l0-21swapper/109:00:211
841996230,6cyclictest33-21ksoftirqd/210:40:212
841996224,4cyclictest33-21ksoftirqd/212:19:092
841996223,6cyclictest33-21ksoftirqd/210:05:252
841996127,5cyclictest33-21ksoftirqd/208:40:002
841996120,6cyclictest33-21ksoftirqd/211:05:002
134491610,4ptp4l0-21swapper/109:50:151
134491610,4ptp4l0-21swapper/007:05:160
841996031,10cyclictest33-21ksoftirqd/211:50:572
841996028,6cyclictest33-21ksoftirqd/208:10:002
841996028,4cyclictest33-21ksoftirqd/209:31:592
841996028,4cyclictest33-21ksoftirqd/209:25:162
841996023,5cyclictest33-21ksoftirqd/212:30:142
841995937,3cyclictest33-21ksoftirqd/209:50:002
841995928,6cyclictest33-21ksoftirqd/210:25:252
841995925,5cyclictest33-21ksoftirqd/210:55:142
841995925,4cyclictest33-21ksoftirqd/208:32:272
134491590,4ptp4l0-21swapper/211:49:222
841995828,4cyclictest33-21ksoftirqd/211:20:142
841995827,3cyclictest33-21ksoftirqd/212:07:072
841995825,4cyclictest33-21ksoftirqd/211:19:462
841995818,8cyclictest33-21ksoftirqd/208:22:102
134491580,3ptp4l29386-21latency_hist10:30:001
112202580,6sleep284199cyclictest08:40:162
841995728,3cyclictest33-21ksoftirqd/207:40:232
841995726,3cyclictest33-21ksoftirqd/207:38:462
841995725,6cyclictest33-21ksoftirqd/210:30:212
841995724,6cyclictest33-21ksoftirqd/210:10:162
841995724,4cyclictest33-21ksoftirqd/207:45:162
841995724,3cyclictest33-21ksoftirqd/209:51:052
841995722,6cyclictest33-21ksoftirqd/210:45:232
134491570,2ptp4l26055-21ls10:20:220
841995632,6cyclictest33-21ksoftirqd/210:15:252
841995625,3cyclictest33-21ksoftirqd/210:00:212
841995624,5cyclictest33-21ksoftirqd/209:12:212
841995624,5cyclictest33-21ksoftirqd/209:12:212
841995623,4cyclictest33-21ksoftirqd/211:43:182
841995616,12cyclictest33-21ksoftirqd/209:22:002
134491560,5ptp4l0-21swapper/110:50:141
134491560,4ptp4l0-21swapper/109:55:281
134491560,4ptp4l0-21swapper/011:40:180
841995525,5cyclictest33-21ksoftirqd/210:24:252
841995525,4cyclictest33-21ksoftirqd/207:26:352
841995521,3cyclictest33-21ksoftirqd/208:52:362
134491550,4ptp4l0-21swapper/109:49:001
134491550,4ptp4l0-21swapper/108:54:201
134491550,3ptp4l0-21swapper/110:10:261
134491550,3ptp4l0-21swapper/108:05:121
134491550,3ptp4l0-21swapper/011:00:260
841995418,4cyclictest33-21ksoftirqd/207:20:242
841995417,7cyclictest33-21ksoftirqd/211:35:182
841995417,6cyclictest33-21ksoftirqd/210:35:152
134491540,3ptp4l0-21swapper/312:35:013
134491540,17ptp4l0-21swapper/110:35:211
841995327,6cyclictest33-21ksoftirqd/208:25:152
841995325,3cyclictest33-21ksoftirqd/211:10:282
134491530,3ptp4l0-21swapper/108:35:171
134491530,3ptp4l0-21swapper/008:10:200
841995215,8cyclictest33-21ksoftirqd/207:31:032
841995215,8cyclictest33-21ksoftirqd/207:31:032
841995213,8cyclictest33-21ksoftirqd/210:52:142
243282520,3sleep10-21swapper/111:25:241
134491520,4ptp4l0-21swapper/008:46:240
134491520,3ptp4l0-21swapper/310:35:003
134491520,3ptp4l0-21swapper/108:16:011
134491520,3ptp4l0-21swapper/108:00:271
841995130,3cyclictest33-21ksoftirqd/209:00:252
841995126,6cyclictest33-21ksoftirqd/209:44:592
841995125,6cyclictest33-21ksoftirqd/211:27:052
841995121,4cyclictest33-21ksoftirqd/208:45:282
841995118,6cyclictest33-21ksoftirqd/212:25:152
841995114,7cyclictest33-21ksoftirqd/207:17:392
134491510,3ptp4l0-21swapper/109:24:471
841995025,7cyclictest33-21ksoftirqd/208:56:392
134491500,4ptp4l0-21swapper/108:56:321
134491500,4ptp4l0-21swapper/009:12:480
134491500,4ptp4l0-21swapper/009:12:480
84199493,3cyclictest33-21ksoftirqd/212:20:292
841994920,10cyclictest33-21ksoftirqd/208:10:182
134491490,4ptp4l0-21swapper/307:33:533
134491490,4ptp4l0-21swapper/307:33:533
134491490,4ptp4l0-21swapper/010:39:200
134491490,4ptp4l0-21swapper/008:40:190
134491490,4ptp4l0-21swapper/008:16:210
134491490,16ptp4l25-21ksoftirqd/109:39:431
84199486,2cyclictest33-21ksoftirqd/207:57:052
841994836,9cyclictest33-21ksoftirqd/212:35:202
84199483,2cyclictest33-21ksoftirqd/209:35:222
841994820,3cyclictest33-21ksoftirqd/209:15:302
841994816,8cyclictest33-21ksoftirqd/208:20:002
841994811,7cyclictest33-21ksoftirqd/212:10:502
841994811,7cyclictest33-21ksoftirqd/212:10:492
134491480,4ptp4l0-21swapper/312:15:183
134491480,4ptp4l0-21swapper/312:12:223
134491480,4ptp4l0-21swapper/312:12:223
134491480,3ptp4l0-21swapper/110:23:121
134491480,3ptp4l0-21swapper/109:07:151
134491480,3ptp4l0-21swapper/107:40:301
134491480,3ptp4l0-21swapper/107:21:041
134491480,17ptp4l25-21ksoftirqd/108:11:461
84199472,3cyclictest33-21ksoftirqd/209:05:522
841994711,4cyclictest33-21ksoftirqd/207:51:062
134491470,4ptp4l0-21swapper/111:59:441
134491470,4ptp4l0-21swapper/109:30:221
134491470,4ptp4l0-21swapper/009:39:340
134491470,10ptp4l0-21swapper/108:22:591
84199461,2cyclictest33-21ksoftirqd/211:06:442
134491460,4ptp4l0-21swapper/208:03:072
134491460,4ptp4l0-21swapper/112:10:101
134491460,4ptp4l0-21swapper/112:10:101
134491460,4ptp4l0-21swapper/109:14:121
134491460,4ptp4l0-21swapper/109:14:121
134491460,4ptp4l0-21swapper/107:06:261
134491460,3ptp4l0-21swapper/107:46:051
134491460,3ptp4l0-21swapper/009:42:170
134491460,12ptp4l0-21swapper/011:35:110
134491450,5ptp4l0-21swapper/011:55:120
134491450,4ptp4l0-21swapper/311:28:133
134491450,3ptp4l0-21swapper/110:09:501
84199449,8cyclictest33-21ksoftirqd/207:11:012
84199443,2cyclictest121rcu_preempt11:58:002
841994413,6cyclictest33-21ksoftirqd/209:55:202
134491440,4ptp4l0-21swapper/111:50:211
134491440,3ptp4l0-21swapper/010:15:200
134491440,3ptp4l0-21swapper/008:09:110
134491440,10ptp4l0-21swapper/312:26:243
134491430,5ptp4l0-21swapper/307:40:193
134491430,4ptp4l18070-21apt-get10:05:130
134491430,4ptp4l0-21swapper/009:07:050
134491420,8ptp4l12331-21ls08:40:283
134491420,4ptp4l24654-21apt-get09:10:143
134491420,4ptp4l24654-21apt-get09:10:143
134491420,4ptp4l16944-21hddtemp_smartct12:20:150
134491420,10ptp4l0-21swapper/310:50:303
134491410,8ptp4l9-21ksoftirqd/007:26:440
134491410,6ptp4l16305-21/usr/sbin/munin07:40:230
134491410,5ptp4l25824-21hddtemp_smartct11:30:160
134491410,5ptp4l0-21swapper/012:15:010
134491410,4ptp4l7873-21apt-get07:25:111
134491410,4ptp4l14193-21apt-get12:15:121
134491410,4ptp4l13242-21apt-get09:55:130
134491410,3ptp4l871-21apt-get07:10:110
134491410,3ptp4l0-21swapper/110:56:301
134491400,5ptp4l21264-21irqstats10:10:190
134491400,5ptp4l0-21swapper/112:20:181
134491400,5ptp4l0-21swapper/012:10:160
134491400,5ptp4l0-21swapper/012:10:150
134491400,5ptp4l0-21swapper/011:10:180
134491400,4ptp4l7306-21df12:00:140
134491400,4ptp4l5580-21apt-get07:20:133
134491400,4ptp4l2673-21ntp_states08:20:230
134491400,4ptp4l24894-21hddtemp_smartct08:00:160
134491400,4ptp4l21649-21irqstats11:20:191
134491400,4ptp4l2072-21df10:40:141
134491400,4ptp4l20697-21irqstats07:50:180
134491400,4ptp4l11126-21memory07:30:220
134491400,4ptp4l11126-21memory07:30:220
134491400,4ptp4l0-21swapper/310:55:263
134491400,4ptp4l0-21swapper/111:13:411
134491400,4ptp4l0-21swapper/007:47:580
134491400,3ptp4l4204-21apt-get10:45:113
134491400,3ptp4l3244-21ls09:30:270
134491400,3ptp4l28458-21ls09:15:300
134491400,3ptp4l27694-21apt-get11:35:121
134491400,3ptp4l26418-21ls11:30:211
134491400,3ptp4l16670-21ntp_states10:00:220
134491390,7ptp4l0-21swapper/107:53:131
134491390,5ptp4l6125-21sed11:55:263
134491390,5ptp4l24996-21cut10:20:003
134491390,5ptp4l11156-21df09:50:140
134491390,5ptp4l0-21swapper/311:30:203
134491390,5ptp4l0-21swapper/308:49:303
134491390,5ptp4l0-21swapper/011:05:240
134491390,5ptp4l0-21swapper/010:40:180
134491390,5ptp4l0-21swapper/008:35:170
134491390,5ptp4l0-21swapper/007:20:200
134491390,4ptp4l7940-21irqstats12:00:201
134491390,4ptp4l4153-21df_inode08:25:121
134491390,4ptp4l29911-21hddtemp_smartct09:20:160
134491390,4ptp4l19400-21ntpq11:15:261
134491390,4ptp4l13586-21ntp_states07:35:231
134491390,4ptp4l13366-21diskstats08:45:171
134491390,4ptp4l11956-21irqstats11:00:201
134491390,4ptp4l11071-21users12:05:300
134491390,4ptp4l0-21swapper/312:35:153
134491390,4ptp4l0-21swapper/311:39:593
134491390,4ptp4l0-21swapper/309:25:253
134491390,4ptp4l0-21swapper/308:55:283
134491390,4ptp4l0-21swapper/307:17:233
134491390,4ptp4l0-21swapper/110:45:181
134491390,4ptp4l0-21swapper/110:30:081
134491390,4ptp4l0-21swapper/109:40:231
134491390,4ptp4l0-21swapper/107:32:051
134491390,4ptp4l0-21swapper/107:32:051
134491390,4ptp4l0-21swapper/107:15:151
134491390,4ptp4l0-21swapper/107:11:051
134491390,4ptp4l0-21swapper/012:35:350
134491390,4ptp4l0-21swapper/012:29:070
134491390,4ptp4l0-21swapper/011:50:250
134491390,4ptp4l0-21swapper/011:48:250
134491390,4ptp4l0-21swapper/010:55:180
134491390,4ptp4l0-21swapper/010:45:200
134491390,4ptp4l0-21swapper/010:29:310
134491390,4ptp4l0-21swapper/009:27:330
134491390,4ptp4l0-21swapper/009:00:180
134491390,4ptp4l0-21swapper/008:50:190
134491390,4ptp4l0-21swapper/007:35:130
134491390,3ptp4l6499-21apt-get10:50:130
134491390,3ptp4l4932-21users07:15:290
134491390,3ptp4l22577-21hddtemp_smartct07:55:170
134491390,3ptp4l18839-21iostat11:15:200
134491390,3ptp4l10323-21users09:45:300
842993833,3cyclictest41-21ksoftirqd/308:25:133
46198380,4rtkit-daemon0-21swapper/310:14:423
134491380,9ptp4l0-21swapper/112:29:281
134491380,6ptp4l0-21swapper/307:55:093
134491380,5ptp4l0-21swapper/307:50:113
134491380,5ptp4l0-21swapper/108:40:261
134491380,4ptp4l0-21swapper/312:22:563
134491380,4ptp4l0-21swapper/312:05:163
134491380,4ptp4l0-21swapper/312:00:303
134491380,4ptp4l0-21swapper/311:51:333
134491380,4ptp4l0-21swapper/311:10:263
134491380,4ptp4l0-21swapper/311:05:283
134491380,4ptp4l0-21swapper/310:06:203
134491380,4ptp4l0-21swapper/309:51:533
134491380,4ptp4l0-21swapper/309:21:333
134491380,4ptp4l0-21swapper/309:00:393
134491380,4ptp4l0-21swapper/308:53:183
134491380,4ptp4l0-21swapper/308:30:223
134491380,4ptp4l0-21swapper/308:19:193
134491380,4ptp4l0-21swapper/308:05:253
134491380,4ptp4l0-21swapper/308:04:353
134491380,4ptp4l0-21swapper/307:26:373
134491380,4ptp4l0-21swapper/112:30:441
134491380,4ptp4l0-21swapper/111:45:091
134491380,4ptp4l0-21swapper/111:05:141
134491380,4ptp4l0-21swapper/108:30:021
134491380,4ptp4l0-21swapper/107:58:271
134491380,4ptp4l0-21swapper/011:25:280
134491380,4ptp4l0-21swapper/008:26:190
134491380,3ptp4l22715-21apt10:15:121
134491380,3ptp4l22115-21meminfo12:30:210
134491380,3ptp4l1019-21ntp_states11:45:253
134491380,3ptp4l0-21swapper/010:30:200
134491380,2ptp4l20806-21apt-get11:20:120
134491370,5ptp4l0-21swapper/309:05:133
134491370,4ptp4l3766-21chrt09:34:473
134491370,4ptp4l0-21swapper/311:40:163
134491370,4ptp4l0-21swapper/311:21:373
134491370,4ptp4l0-21swapper/311:15:043
134491370,4ptp4l0-21swapper/310:43:483
134491370,4ptp4l0-21swapper/310:35:303
134491370,4ptp4l0-21swapper/310:01:143
134491370,4ptp4l0-21swapper/309:55:293
134491370,4ptp4l0-21swapper/308:21:333
134491370,4ptp4l0-21swapper/308:10:233
134491370,4ptp4l0-21swapper/110:02:401
134491370,4ptp4l0-21swapper/109:16:421
134491370,4ptp4l0-21swapper/008:55:250
134491370,4ptp4l0-21swapper/008:30:230
134491370,3ptp4l0-21swapper/311:01:073
134491370,3ptp4l0-21swapper/112:39:221
134491370,3ptp4l0-21swapper/111:42:201
134491370,2ptp4l9395-21meminfo08:35:203
46198360,4rtkit-daemon0-21swapper/307:36:293
134491360,4ptp4l0-21swapper/310:29:103
134491360,4ptp4l0-21swapper/309:16:183
134491360,4ptp4l0-21swapper/307:47:533
134491360,3ptp4l0-21swapper/310:23:323
134491360,3ptp4l0-21swapper/309:45:143
134491350,4ptp4l0-21swapper/309:41:473
134491350,4ptp4l0-21swapper/309:37:113
137891266,12phc2sys30935-21apt-get07:05:123
317782192,10sleep231882-21meminfo07:05:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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