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2026-03-10 - 16:15
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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 Tue Mar 10, 2026 12:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1917822120,7sleep119181-21needreboot07:05:221
20603997012,55cyclictest1359-21mailstats07:35:260
20603996910,57cyclictest7138-21latency_hist11:19:590
20603996817,11cyclictest9024-21taskset11:20:520
20603996815,14cyclictest1317-21runrttasks11:12:070
20603996717,11cyclictest8638-21taskset09:00:270
20603996617,10cyclictest27429-21taskset09:41:480
2060399659,15cyclictest15498-21switchtime10:25:250
20603996518,10cyclictest15996-21taskset08:09:490
20603996517,9cyclictest10420-21ls12:35:160
20603996514,10cyclictest25032-21seq07:19:400
20603996511,51cyclictest32737-21apt-get11:05:100
20603996417,11cyclictest29845-21taskset10:55:580
20603996417,11cyclictest29845-21taskset10:55:570
20603996417,10cyclictest9594-21taskset12:33:370
20603996417,10cyclictest13662-21taskset11:30:470
20603996417,10cyclictest13580-21taskset10:21:350
20603996416,11cyclictest25035-21taskset10:45:550
20603996416,11cyclictest13732-21taskset09:13:270
20603996415,9cyclictest18015-21tail10:30:270
20603996316,11cyclictest27938-21seq12:01:100
20603996315,10cyclictest2964-21cat12:20:010
20603996314,45cyclictest19720-21grep09:25:220
20603996219,10cyclictest22526-21taskset07:12:060
20603996214,9cyclictest22457-21timerandwakeup10:40:270
20603996213,11cyclictest5353-21sed07:45:180
20603996210,10cyclictest17220-21missed_timers08:10:210
134491620,4ptp4l0-21swapper/207:05:262
134491620,4ptp4l0-21swapper/111:40:001
2060699612,25cyclictest0-21swapper/310:37:403
2060399619,11cyclictest31459-21cat08:40:240
20603996120,17cyclictest22786-21taskset08:23:140
20603996120,10cyclictest29890-21seq09:48:560
20603996119,15cyclictest4375-21seq07:43:590
20603996119,10cyclictest32254-21taskset09:54:420
20603996116,10cyclictest1930-21taskset08:48:440
20603996115,9cyclictest5807-21sed12:25:150
20603996013,12cyclictest16031-21ls11:35:290
20603996012,14cyclictest18231-21taskset09:21:580
20603996011,14cyclictest23142-21cat11:50:270
20603996010,10cyclictest25316-21/usr/sbin/munin07:20:140
134491600,4ptp4l0-21swapper/011:00:280
20603995920,16cyclictest30225-21seq12:05:590
20603995919,9cyclictest11135-21seq10:15:390
20603995916,11cyclictest25729-21seq11:57:330
20603995913,43cyclictest8722-21/usr/sbin/munin10:10:270
20603995820,11cyclictest5110-21cat12:24:540
20603995819,16cyclictest20713-21seq10:39:350
20603995819,10cyclictest27445-21taskset08:34:020
20603995816,9cyclictest2009-21runrttasks09:57:550
134491580,4ptp4l0-21swapper/109:45:231
134491580,3ptp4l0-21swapper/109:36:311
20603995720,17cyclictest11048-21taskset07:56:190
20603995719,16cyclictest11247-21taskset09:06:420
2060399570,22cyclictest1317-21runrttasks08:54:230
134491570,4ptp4l0-21swapper/110:42:321
134491570,4ptp4l0-21swapper/009:17:350
134491570,3ptp4l0-21swapper/108:20:141
134491570,14ptp4l0-21swapper/112:15:221
20603995617,11cyclictest4197-21taskset10:00:340
20603995611,16cyclictest5594-21missed_timers08:55:210
20603995518,9cyclictest6740-21taskset10:08:440
20603995518,10cyclictest20517-21runrttasks08:18:500
20603995512,9cyclictest24425-21ntp_kernel_pll_09:35:230
134491550,4ptp4l0-21swapper/109:08:181
2060699545,6cyclictest0-21swapper/307:20:243
20603995418,17cyclictest9039-21taskset07:54:570
134491540,4ptp4l0-21swapper/209:34:022
134491540,4ptp4l0-21swapper/112:13:361
2060699532,6cyclictest0-21swapper/310:30:223
20603995319,7cyclictest18667-21seq11:43:090
20603995317,11cyclictest29718-21taskset07:27:580
20603995317,10cyclictest365-21runrttasks12:14:550
20603995316,11cyclictest13650-21runrttasks08:04:100
20603995310,13cyclictest28015-21df_abs08:35:140
134491530,3ptp4l0-21swapper/211:45:062
134491530,3ptp4l0-21swapper/209:45:202
134491530,3ptp4l0-21swapper/207:43:272
134491530,3ptp4l0-21swapper/111:28:091
2060699523,11cyclictest0-21swapper/310:46:453
134491520,9ptp4l18138-21apt-get07:05:130
134491520,4ptp4l0-21swapper/110:52:591
134491520,4ptp4l0-21swapper/107:19:551
134491520,3ptp4l0-21swapper/212:19:162
134491520,3ptp4l0-21swapper/212:05:262
134491520,3ptp4l0-21swapper/208:54:532
134491520,3ptp4l0-21swapper/108:05:451
134491520,12ptp4l0-21swapper/109:31:231
134491520,11ptp4l0-21swapper/211:10:002
2060699516,6cyclictest0-21swapper/308:20:213
2060699515,10cyclictest0-21swapper/307:40:133
2060699513,11cyclictest0-21swapper/310:54:003
2060699510,6cyclictest15077-21ntpq08:05:223
178572510,5sleep22060599cyclictest10:30:262
134491510,4ptp4l0-21swapper/109:22:191
134491510,10ptp4l0-21swapper/111:17:381
2060699505,6cyclictest0-21swapper/310:20:163
2060699504,6cyclictest41-21ksoftirqd/309:10:193
2060699504,11cyclictest0-21swapper/309:30:233
2060699503,7cyclictest0-21swapper/312:30:163
2060699503,5cyclictest0-21swapper/311:15:243
20603995013,10cyclictest22744-21runrttasks09:30:510
134491500,5ptp4l0-21swapper/108:52:451
134491500,4ptp4l0-21swapper/112:24:211
134491500,1ptp4l22517-21kworker/2:207:37:112
319092490,4sleep30-21swapper/309:50:273
2060699496,6cyclictest0-21swapper/309:44:043
2060699495,6cyclictest0-21swapper/307:15:293
2060699493,6cyclictest41-21ksoftirqd/307:55:213
2060699492,6cyclictest0-21swapper/308:35:193
2060699492,6cyclictest0-21swapper/307:27:263
134491490,5ptp4l0-21swapper/307:05:433
134491490,4ptp4l0-21swapper/211:13:482
134491490,4ptp4l0-21swapper/208:56:362
20606994830,9cyclictest41-21ksoftirqd/309:15:133
2060699482,10cyclictest0-21swapper/308:40:513
20603994817,9cyclictest25160-21taskset08:29:100
20603994816,10cyclictest27621-21taskset10:51:560
134491480,4ptp4l0-21swapper/111:34:381
134491480,4ptp4l0-21swapper/108:01:121
37662470,5sleep20-21swapper/210:00:252
2060699475,6cyclictest0-21swapper/312:10:213
2060699475,6cyclictest0-21swapper/308:55:243
2060699474,6cyclictest0-21swapper/307:45:243
2060699473,5cyclictest0-21swapper/308:00:273
2060699472,5cyclictest0-21swapper/310:05:163
2060699470,5cyclictest41-21ksoftirqd/312:37:273
134491470,9ptp4l10717-21ntp_states11:25:220
134491470,4ptp4l0-21swapper/209:07:032
134491470,3ptp4l0-21swapper/212:33:162
2060699466,6cyclictest0-21swapper/308:50:283
2060699464,6cyclictest0-21swapper/309:47:513
2060699463,7cyclictest0-21swapper/307:10:183
2060699462,7cyclictest0-21swapper/309:37:033
2060699462,6cyclictest0-21swapper/311:25:163
2060699462,6cyclictest0-21swapper/309:09:403
2060699462,10cyclictest0-21swapper/310:15:153
2060699461,6cyclictest41-21ksoftirqd/312:05:203
2060699460,6cyclictest41-21ksoftirqd/310:25:203
2060399465,11cyclictest0-21swapper/007:33:390
134491460,6ptp4l321ktimersoftd/212:10:182
134491460,4ptp4l0-21swapper/212:24:282
134491460,3ptp4l0-21swapper/311:24:243
134491460,10ptp4l0-21swapper/111:00:261
2060699458,5cyclictest0-21swapper/308:15:153
2060699455,6cyclictest0-21swapper/311:02:523
2060699452,6cyclictest41-21ksoftirqd/307:50:213
2060699452,23cyclictest0-21swapper/312:16:213
134491450,4ptp4l0-21swapper/212:37:042
134491450,4ptp4l0-21swapper/211:16:242
134491450,4ptp4l0-21swapper/109:40:131
134491450,3ptp4l0-21swapper/211:55:142
134491450,3ptp4l0-21swapper/107:35:001
134491450,10ptp4l0-21swapper/207:11:442
2060699447,6cyclictest0-21swapper/310:40:203
2060699443,7cyclictest41-21ksoftirqd/307:37:323
2060699443,5cyclictest41-21ksoftirqd/312:25:183
2060699442,7cyclictest0-21swapper/310:14:313
2060699442,6cyclictest41-21ksoftirqd/308:30:153
2060699442,6cyclictest0-21swapper/312:24:163
2060699442,6cyclictest0-21swapper/311:10:193
20604994439,3cyclictest25-21ksoftirqd/111:49:591
134491440,6ptp4l18198-21ls11:40:262
134491440,3ptp4l0-21swapper/211:52:372
134491440,3ptp4l0-21swapper/110:12:381
134491440,3ptp4l0-21swapper/109:27:281
134491440,3ptp4l0-21swapper/108:26:411
134491440,2ptp4l0-21swapper/311:52:393
134491440,10ptp4l0-21swapper/211:25:212
2060699436,6cyclictest0-21swapper/308:10:163
2060699434,5cyclictest41-21ksoftirqd/312:00:153
2060699432,6cyclictest0-21swapper/309:55:263
2060699432,6cyclictest0-21swapper/309:00:163
2060699432,12cyclictest0-21swapper/308:25:263
2060699432,10cyclictest0-21swapper/310:55:293
2060699432,10cyclictest0-21swapper/310:55:283
20605994331,10cyclictest33-21ksoftirqd/210:20:172
20604994338,3cyclictest25-21ksoftirqd/108:40:001
20604994338,3cyclictest25-21ksoftirqd/108:15:001
20604994337,3cyclictest25-21ksoftirqd/111:15:001
20604994337,3cyclictest25-21ksoftirqd/110:40:001
134491430,5ptp4l0-21swapper/311:55:103
134491430,5ptp4l0-21swapper/110:15:101
134491430,4ptp4l14111-21apt-get09:15:102
134491430,4ptp4l0-21swapper/108:32:001
134491430,10ptp4l0-21swapper/210:40:272
46198420,11rtkit-daemon0-21swapper/111:44:111
2060699425,5cyclictest0-21swapper/308:45:223
2060699423,6cyclictest0-21swapper/310:00:153
2060699422,6cyclictest0-21swapper/311:41:193
2060699422,6cyclictest0-21swapper/309:22:343
2060699421,6cyclictest0-21swapper/311:35:243
20604994237,3cyclictest25-21ksoftirqd/110:35:001
134491420,9ptp4l0-21swapper/211:39:262
134491420,9ptp4l0-21swapper/208:36:492
134491420,9ptp4l0-21swapper/207:30:082
134491420,8ptp4l23891-21grep10:45:191
134491420,4ptp4l0-21swapper/207:16:462
134491420,4ptp4l0-21swapper/110:55:491
134491420,4ptp4l0-21swapper/110:55:491
134491420,3ptp4l0-21swapper/210:37:152
134491420,3ptp4l0-21swapper/108:42:401
2060699415,11cyclictest0-21swapper/311:33:243
2060699413,6cyclictest0-21swapper/307:30:183
2060699412,6cyclictest0-21swapper/309:25:243
2060699412,5cyclictest0-21swapper/311:45:253
20604994136,3cyclictest25-21ksoftirqd/112:00:181
20604994134,4cyclictest25-21ksoftirqd/111:20:201
134491410,8ptp4l0-21swapper/209:27:192
134491410,8ptp4l0-21swapper/208:19:302
134491410,5ptp4l8543-21timerwakeupswit07:50:261
134491410,5ptp4l3976-21ls07:40:261
134491410,5ptp4l0-21swapper/211:20:242
134491410,5ptp4l0-21swapper/209:50:162
134491410,5ptp4l0-21swapper/208:45:242
134491410,5ptp4l0-21swapper/111:50:111
134491410,5ptp4l0-21swapper/108:55:191
134491410,4ptp4l32436-21apt-get07:35:131
134491410,4ptp4l20715-21apt-get07:10:131
134491410,4ptp4l0-21swapper/209:04:522
134491410,4ptp4l0-21swapper/111:06:441
134491410,4ptp4l0-21swapper/107:22:381
20604994035,3cyclictest25-21ksoftirqd/109:05:011
20604994035,3cyclictest25-21ksoftirqd/107:45:131
134491400,8ptp4l0-21swapper/207:24:532
134491400,6ptp4l0-21swapper/211:00:212
134491400,5ptp4l1371-21/usr/sbin/munin09:55:231
134491400,5ptp4l0-21swapper/208:44:292
134491400,5ptp4l0-21swapper/112:37:131
134491400,4ptp4l5372-21iostat_ios10:05:191
134491400,4ptp4l30542-21diskstats09:50:141
134491400,4ptp4l0-21swapper/212:00:582
134491400,4ptp4l0-21swapper/210:59:352
134491400,4ptp4l0-21swapper/210:59:352
134491400,4ptp4l0-21swapper/210:05:342
134491400,4ptp4l0-21swapper/209:56:392
134491400,4ptp4l0-21swapper/207:57:332
134491400,4ptp4l0-21swapper/207:54:092
134491400,4ptp4l0-21swapper/110:00:191
134491400,4ptp4l0-21swapper/109:10:261
134491400,4ptp4l0-21swapper/108:15:211
134491400,3ptp4l19505-21hddtemp_smartct11:45:170
134491400,2ptp4l121rcu_preempt09:10:272
20606993936,2cyclictest391rcuc/311:05:223
20604993935,3cyclictest25-21ksoftirqd/109:20:001
20604993934,3cyclictest25-21ksoftirqd/112:35:011
134491390,5ptp4l29154-21sendmail_mailtr07:25:261
134491390,4ptp4l0-21swapper/212:25:272
134491390,4ptp4l0-21swapper/210:47:222
134491390,4ptp4l0-21swapper/210:25:512
134491390,4ptp4l0-21swapper/210:17:532
134491390,4ptp4l0-21swapper/209:20:282
134491390,4ptp4l0-21swapper/208:20:362
134491390,4ptp4l0-21swapper/208:10:472
134491390,4ptp4l0-21swapper/112:08:131
134491390,4ptp4l0-21swapper/111:55:271
134491390,4ptp4l0-21swapper/110:25:161
134491390,4ptp4l0-21swapper/110:20:241
134491390,4ptp4l0-21swapper/107:55:261
134491380,4ptp4l5032-21grep07:45:152
134491380,4ptp4l0-21swapper/210:50:042
134491380,4ptp4l0-21swapper/210:10:162
134491380,4ptp4l0-21swapper/209:38:012
134491380,4ptp4l0-21swapper/208:09:182
134491380,4ptp4l0-21swapper/207:28:412
134491380,4ptp4l0-21swapper/112:25:171
134491380,3ptp4l32595-21df08:45:151
134491380,3ptp4l0-21swapper/211:32:282
134491380,3ptp4l0-21swapper/209:40:162
134491370,4ptp4l0-21swapper/208:01:402
134491370,3ptp4l0-21swapper/208:33:452
134491370,3ptp4l0-21swapper/208:26:382
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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