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2026-07-25 - 06:08
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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 Sat Jul 25, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1566721780,7sleep33174299cyclictest19:59:113
1566721780,7sleep33174299cyclictest19:59:113
90921760,7sleep13174099cyclictest20:00:051
423321730,6sleep23174199cyclictest20:03:352
1600621720,3sleep23174199cyclictest23:45:242
1576421570,6sleep03173999cyclictest19:59:440
1576421570,6sleep03173999cyclictest19:59:440
365721560,6sleep03173999cyclictest19:17:060
184692930,4sleep118460-21expr19:39:031
120492830,3sleep012048-21wc20:03:450
37562800,3sleep30-21swapper/319:18:113
137582790,4sleep16979-21spawn19:59:011
137582790,4sleep16979-21spawn19:59:011
31740997317,52cyclictest27841-21seq23:00:411
256742710,3sleep225612-21sh20:06:092
3174099709,16cyclictest31946-21grep19:10:141
13832700,5sleep30-21swapper/300:25:173
31740996714,12cyclictest14152-21chrt21:24:101
31740996714,10cyclictest5241-21chrt23:23:531
31740996710,11cyclictest15652-21sort20:06:401
31741996629,5cyclictest33-21ksoftirqd/219:59:352
31741996629,5cyclictest33-21ksoftirqd/219:59:352
3174099659,11cyclictest17054-21df_abs20:20:131
31740996516,46cyclictest11743-21seq21:17:591
31740996515,10cyclictest16781-21chrt23:49:191
14532650,4sleep01429-21execl19:46:040
31741996433,3cyclictest33-21ksoftirqd/219:40:222
31741996432,3cyclictest33-21ksoftirqd/223:40:012
31741996432,2cyclictest33-21ksoftirqd/219:25:162
31741996429,4cyclictest33-21ksoftirqd/221:48:422
31740996415,11cyclictest23385-21chrt21:41:511
31740996414,11cyclictest8533-21sleep19:28:001
31741996335,2cyclictest33-21ksoftirqd/221:15:002
31741996323,4cyclictest33-21ksoftirqd/219:35:562
3174099638,11cyclictest3861-21sed21:00:211
3174099638,11cyclictest3861-21sed21:00:211
31741996230,4cyclictest33-21ksoftirqd/221:24:192
31741996229,4cyclictest33-21ksoftirqd/222:24:002
31741996228,4cyclictest33-21ksoftirqd/223:32:082
31741996227,5cyclictest33-21ksoftirqd/221:30:332
31740996215,11cyclictest21684-21chrt00:00:111
31740996215,10cyclictest7669-21taskset00:39:191
31741996131,3cyclictest33-21ksoftirqd/219:45:352
31741996129,4cyclictest33-21ksoftirqd/221:50:222
31740996115,12cyclictest25811-21taskset21:48:251
31740996115,11cyclictest714-21chrt00:24:551
134491610,8ptp4l121rcu_preempt19:37:403
31741996034,7cyclictest33-21ksoftirqd/221:28:322
31741996030,4cyclictest33-21ksoftirqd/200:04:062
31741996029,3cyclictest33-21ksoftirqd/223:15:512
31741996027,6cyclictest33-21ksoftirqd/221:55:132
31741996025,4cyclictest33-21ksoftirqd/222:02:502
31741996025,3cyclictest33-21ksoftirqd/223:52:282
31741996021,7cyclictest33-21ksoftirqd/220:40:002
31740996015,10cyclictest26153-21chrt00:08:541
31740996014,11cyclictest9433-21seq22:20:411
31740996014,11cyclictest32665-21chrt23:10:491
31740996010,47cyclictest2803-21awk19:15:231
134491600,4ptp4l17849-21sort19:40:110
108532600,5sleep10-21swapper/123:35:161
31741995929,4cyclictest33-21ksoftirqd/220:18:472
31741995928,6cyclictest33-21ksoftirqd/220:21:242
31741995927,5cyclictest33-21ksoftirqd/220:13:182
31741995924,5cyclictest33-21ksoftirqd/222:05:132
3174099590,56cyclictest0-21swapper/123:30:281
134491590,8ptp4l0-21swapper/200:32:102
31741995830,7cyclictest33-21ksoftirqd/223:43:442
31741995829,4cyclictest33-21ksoftirqd/222:43:382
31741995828,4cyclictest33-21ksoftirqd/221:44:472
31741995825,3cyclictest33-21ksoftirqd/200:19:442
14352580,4sleep31430-21execl19:45:523
31741995729,3cyclictest33-21ksoftirqd/220:53:302
31741995727,4cyclictest33-21ksoftirqd/219:20:322
31741995724,3cyclictest33-21ksoftirqd/222:51:372
31740995714,39cyclictest15049-21/usr/sbin/munin22:35:141
31740995714,11cyclictest25604-21chrt20:37:571
134491570,4ptp4l0-21swapper/320:26:333
134491570,2ptp4l18271-21phc2sys-jitter23:50:240
31741995630,7cyclictest33-21ksoftirqd/223:57:402
31741995630,7cyclictest33-21ksoftirqd/219:50:212
31741995624,4cyclictest33-21ksoftirqd/200:38:162
31741995623,4cyclictest33-21ksoftirqd/220:45:352
31741995621,4cyclictest33-21ksoftirqd/220:25:142
3174099567,11cyclictest4595-21sed22:10:271
31740995614,10cyclictest14056-21chrt22:31:051
31740995612,11cyclictest6028-21seq19:22:011
3174099560,54cyclictest30291-21kworker/1:220:26:501
134491560,4ptp4l0-21swapper/319:30:303
134491560,4ptp4l0-21swapper/223:10:542
134491560,4ptp4l0-21swapper/222:14:212
134491560,4ptp4l0-21swapper/219:18:342
134491560,4ptp4l0-21swapper/021:46:040
134491560,4ptp4l0-21swapper/019:30:230
31741995523,4cyclictest33-21ksoftirqd/200:05:502
31741995523,3cyclictest33-21ksoftirqd/222:29:022
31741995522,5cyclictest33-21ksoftirqd/221:05:162
31741995521,4cyclictest33-21ksoftirqd/219:34:112
31741995519,9cyclictest33-21ksoftirqd/200:25:272
134491550,6ptp4l0-21swapper/319:09:233
31741995422,4cyclictest33-21ksoftirqd/220:31:552
31741995416,5cyclictest33-21ksoftirqd/200:20:202
3174099548,44cyclictest0-21swapper/119:40:151
31740995414,37cyclictest4081-21fstime19:52:361
31740995410,9cyclictest29731-21seq00:15:191
31740995410,41cyclictest0-21swapper/121:50:171
134491540,5ptp4l0-21swapper/021:40:230
134491540,4ptp4l0-21swapper/223:09:362
134491540,4ptp4l0-21swapper/200:13:222
134491540,4ptp4l0-21swapper/200:13:222
134491540,12ptp4l29410-21apt-get19:05:162
31741995323,3cyclictest33-21ksoftirqd/223:24:012
3174099538,42cyclictest1432-21execl19:45:571
31740995314,36cyclictest13037-21if_err_enp4s023:40:181
134491530,4ptp4l0-21swapper/023:11:550
134491530,3ptp4l0-21swapper/023:20:220
134491530,3ptp4l0-21swapper/020:10:210
3174199522,7cyclictest0-21swapper/221:00:242
3174199522,7cyclictest0-21swapper/221:00:242
31741995226,6cyclictest33-21ksoftirqd/223:00:202
31741995226,6cyclictest33-21ksoftirqd/222:45:352
31741995225,6cyclictest33-21ksoftirqd/223:26:262
31741995222,4cyclictest33-21ksoftirqd/220:41:402
31741995222,3cyclictest33-21ksoftirqd/222:39:012
31741995219,6cyclictest33-21ksoftirqd/221:35:172
31740995216,12cyclictest2524-21taskset20:58:361
134491520,4ptp4l0-21swapper/022:27:390
134491520,4ptp4l0-21swapper/022:02:020
134491520,4ptp4l0-21swapper/021:26:300
134491520,4ptp4l0-21swapper/021:19:280
31740995116,11cyclictest14203-21seq20:14:481
31740995112,7cyclictest14680-21df21:25:141
31740995111,7cyclictest17786-21irqstats22:40:201
31741995019,3cyclictest33-21ksoftirqd/221:18:022
31741995012,5cyclictest33-21ksoftirqd/220:55:232
3174099508,39cyclictest94491spawn19:30:251
31740995016,31cyclictest21848-21hddtemp_smartct20:30:171
31740995014,9cyclictest134491ptp4l21:05:271
134491500,3ptp4l0-21swapper/000:31:060
3174099498,15cyclictest3954-21cut00:30:181
31740994915,10cyclictest18643-21taskset21:32:501
134491490,3ptp4l0-21swapper/019:22:090
134491490,2ptp4l0-21swapper/021:35:210
134491490,11ptp4l0-21swapper/321:40:253
3174199483,11cyclictest33-21ksoftirqd/222:17:182
3174199483,11cyclictest33-21ksoftirqd/222:17:182
31740994810,7cyclictest22469-21ls22:50:201
137891481,2phc2sys121rcu_preempt20:07:583
134491480,3ptp4l0-21swapper/322:22:263
3174099479,8cyclictest20845-21ls21:35:271
3174099478,36cyclictest1013-21cpu00:25:141
31740994710,33cyclictest27541-21timerwakeupswit20:40:281
134491470,3ptp4l0-21swapper/222:55:032
31740994615,11cyclictest7276-21taskset22:17:391
31740994615,11cyclictest7276-21taskset22:17:391
3174199452,2cyclictest121rcu_preempt19:11:582
31740994514,11cyclictest18981-21taskset23:53:071
134491450,3ptp4l24299-21od19:39:450
134491450,3ptp4l0-21swapper/120:16:071
134491450,12ptp4l28075-21sort20:07:010
3174199444,2cyclictest10121-21kworker/2:222:33:192
3174099448,7cyclictest28191-21apt-get23:05:011
31740994417,24cyclictest30150-21users21:55:291
134491440,9ptp4l0-21swapper/022:52:350
134491440,7ptp4l26906-21sh19:40:223
134491440,5ptp4l0-21swapper/322:30:123
134491440,5ptp4l0-21swapper/019:52:570
134491430,5ptp4l0-21swapper/022:35:230
134491430,4ptp4l0-21swapper/319:53:183
134491430,2ptp4l121rcu_preempt23:00:233
134491430,10ptp4l0-21swapper/021:02:230
134491430,10ptp4l0-21swapper/021:02:230
134491420,9ptp4l0-21swapper/022:58:170
134491420,6ptp4l14618-21apt-get22:35:093
134491420,6ptp4l0-21swapper/021:06:480
134491420,5ptp4l27059-21iostat00:10:190
134491420,5ptp4l27059-21iostat00:10:190
134491420,4ptp4l7559-21apt-get21:10:120
134491420,4ptp4l6554-21apt-get19:25:130
134491420,4ptp4l13827-21ls22:30:270
134491420,4ptp4l0-21swapper/320:20:213
134491420,4ptp4l0-21swapper/022:48:160
134491420,4ptp4l0-21swapper/000:36:330
134491410,8ptp4l0-21swapper/322:17:053
134491410,8ptp4l0-21swapper/322:17:053
134491410,7ptp4l26892-21multi.sh20:03:593
134491410,5ptp4l0-21swapper/021:30:270
134491410,4ptp4l820-21apt-get23:15:131
134491410,4ptp4l820-21apt-get23:15:120
134491410,4ptp4l29736-21memory00:15:200
134491410,4ptp4l26492-21apt-get00:10:143
134491410,4ptp4l26492-21apt-get00:10:143
134491410,4ptp4l20393-21ntp_states21:35:223
134491410,4ptp4l0-21swapper/322:00:283
134491410,4ptp4l0-21swapper/321:07:313
134491410,4ptp4l0-21swapper/022:05:200
134491410,4ptp4l0-21swapper/020:25:090
134491410,3ptp4l23826-21apt-get22:55:131
3174099407,7cyclictest28896-21iostat20:45:161
134491400,5ptp4l17689-21irqrtprio22:40:190
134491400,5ptp4l0-21swapper/322:40:223
134491400,5ptp4l0-21swapper/321:00:293
134491400,5ptp4l0-21swapper/321:00:293
134491400,5ptp4l0-21swapper/122:45:221
134491400,5ptp4l0-21swapper/023:45:260
134491400,4ptp4l6148-21iostat23:25:170
134491400,4ptp4l27612-21ntp_states00:10:241
134491400,4ptp4l27612-21ntp_states00:10:241
134491400,4ptp4l22769-21python20:30:260
134491400,4ptp4l1973-21memory00:25:220
134491400,4ptp4l15590-21ntp_states20:15:230
134491400,4ptp4l0-21swapper/321:52:533
134491400,4ptp4l0-21swapper/320:35:173
134491400,4ptp4l0-21swapper/319:26:583
134491400,4ptp4l0-21swapper/121:10:181
134491400,4ptp4l0-21swapper/023:03:330
134491400,4ptp4l0-21swapper/020:57:470
134491400,4ptp4l0-21swapper/020:45:170
134491400,4ptp4l0-21swapper/020:40:270
134491400,3ptp4l28689-21df21:55:140
134491400,3ptp4l27464-21grep20:40:263
134491400,3ptp4l12174-21apt-get21:20:110
134491400,3ptp4l0-21swapper/321:47:533
134491400,3ptp4l0-21swapper/321:34:593
134491400,11ptp4l9-21ksoftirqd/023:39:580
134491390,7ptp4l0-21swapper/023:45:010
134491390,5ptp4l11573-21sed22:25:261
134491390,4ptp4l9-21ksoftirqd/022:10:180
134491390,4ptp4l28416-21cpuspeed20:45:123
134491390,4ptp4l24636-21cut22:55:193
134491390,4ptp4l0-21swapper/323:23:183
134491390,4ptp4l0-21swapper/323:18:093
134491390,4ptp4l0-21swapper/322:25:533
134491390,4ptp4l0-21swapper/322:10:163
134491390,4ptp4l0-21swapper/322:09:533
134491390,4ptp4l0-21swapper/321:55:223
134491390,4ptp4l0-21swapper/321:21:283
134491390,4ptp4l0-21swapper/321:15:193
134491390,4ptp4l0-21swapper/320:50:023
134491390,4ptp4l0-21swapper/319:20:193
134491390,4ptp4l0-21swapper/300:20:263
134491390,4ptp4l0-21swapper/123:25:291
134491390,4ptp4l0-21swapper/023:30:200
134491390,4ptp4l0-21swapper/023:05:310
134491390,4ptp4l0-21swapper/022:23:310
134491390,4ptp4l0-21swapper/020:53:250
134491390,4ptp4l0-21swapper/020:35:410
134491390,4ptp4l0-21swapper/019:10:240
134491390,4ptp4l0-21swapper/000:21:280
134491390,4ptp4l0-21swapper/000:05:160
134491390,3ptp4l15975-21ls21:25:283
134491390,3ptp4l0-21swapper/022:15:110
134491390,3ptp4l0-21swapper/022:15:110
46198380,4rtkit-daemon0-21swapper/323:51:173
31742993833,3cyclictest41-21ksoftirqd/300:34:283
31740993832,4cyclictest25-21ksoftirqd/122:05:141
134491380,4ptp4l0-21swapper/323:35:483
134491380,4ptp4l0-21swapper/323:31:223
134491380,4ptp4l0-21swapper/323:25:433
134491380,4ptp4l0-21swapper/323:10:183
134491380,4ptp4l0-21swapper/323:05:013
134491380,4ptp4l0-21swapper/322:51:463
134491380,4ptp4l0-21swapper/322:45:153
134491380,4ptp4l0-21swapper/321:11:293
134491380,4ptp4l0-21swapper/320:57:563
134491380,4ptp4l0-21swapper/320:33:223
134491380,4ptp4l0-21swapper/319:12:353
134491380,4ptp4l0-21swapper/123:55:251
134491380,4ptp4l0-21swapper/122:02:371
134491380,4ptp4l0-21swapper/120:54:541
134491380,4ptp4l0-21swapper/020:24:210
134491380,4ptp4l0-21swapper/000:00:510
134491380,3ptp4l26603-21fschecks_time21:50:160
134491380,3ptp4l0-21swapper/023:58:040
134491370,4ptp4l0-21swapper/323:55:243
134491370,4ptp4l0-21swapper/323:46:193
134491370,4ptp4l0-21swapper/323:42:323
134491370,4ptp4l0-21swapper/300:35:503
134491370,4ptp4l0-21swapper/300:00:043
134491370,3ptp4l0-21swapper/320:10:243
134491370,3ptp4l0-21swapper/300:17:463
134491330,3ptp4l0-21swapper/300:08:503
46198300,5rtkit-daemon0-21swapper/019:08:390
1378912611,3phc2sys41-21ksoftirqd/320:15:293
309162131,6sleep131082-21users19:05:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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