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2026-03-28 - 20:07
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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 Mar 28, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2551821600,4sleep10-21swapper/107:05:161
44342730,4sleep00-21swapper/008:40:150
134491630,5ptp4l0-21swapper/012:35:220
134491630,4ptp4l0-21swapper/011:58:050
134491620,3ptp4l15901-21hddtemp_smartct07:55:170
134491610,7ptp4l26543-21chrt07:07:000
134491610,4ptp4l8154-21apt-get12:15:031
134491600,4ptp4l0-21swapper/207:52:172
134491600,4ptp4l0-21swapper/008:45:200
134491590,4ptp4l0-21swapper/012:10:200
134491590,3ptp4l0-21swapper/012:30:260
2707299582,54cyclictest0-21swapper/207:15:292
134491580,3ptp4l0-21swapper/011:35:260
27071995710,45cyclictest15738-21kworker/1:110:12:291
134491570,3ptp4l0-21swapper/211:58:032
134491570,2ptp4l0-21swapper/009:30:150
134491560,4ptp4l0-21swapper/007:38:370
134491560,3ptp4l0-21swapper/011:53:240
134491550,4ptp4l0-21swapper/012:24:500
134491550,4ptp4l0-21swapper/010:40:030
134491540,5ptp4l0-21swapper/010:35:460
134491540,4ptp4l0-21swapper/209:47:042
134491540,3ptp4l0-21swapper/008:55:210
134491540,3ptp4l0-21swapper/008:50:260
134491540,3ptp4l0-21swapper/008:20:190
134491540,3ptp4l0-21swapper/008:05:250
134491530,4ptp4l0-21swapper/012:04:430
134491530,4ptp4l0-21swapper/011:46:340
134491530,4ptp4l0-21swapper/007:41:120
134491520,5ptp4l0-21swapper/207:33:152
134491520,5ptp4l0-21swapper/207:33:152
134491520,3ptp4l0-21swapper/009:05:380
134491510,4ptp4l0-21swapper/211:10:042
134491510,4ptp4l0-21swapper/208:31:142
134491510,4ptp4l0-21swapper/011:31:110
134491500,4ptp4l0-21swapper/311:47:113
134491500,4ptp4l0-21swapper/212:07:232
134491500,4ptp4l0-21swapper/209:42:562
134491500,4ptp4l0-21swapper/209:17:342
134491500,4ptp4l0-21swapper/208:56:422
134491500,4ptp4l0-21swapper/012:29:000
134491500,4ptp4l0-21swapper/008:16:230
134491500,3ptp4l0-21swapper/111:47:241
134491490,4ptp4l0-21swapper/308:21:213
134491490,4ptp4l0-21swapper/211:49:592
134491490,4ptp4l0-21swapper/010:34:350
134491490,4ptp4l0-21swapper/010:26:400
134491490,4ptp4l0-21swapper/010:26:400
134491490,3ptp4l0-21swapper/208:40:192
134491490,3ptp4l0-21swapper/207:24:412
134491480,4ptp4l0-21swapper/207:28:282
134491480,3ptp4l0-21swapper/011:15:290
134491480,3ptp4l0-21swapper/011:15:290
134491480,3ptp4l0-21swapper/009:25:130
134491470,4ptp4l0-21swapper/209:07:012
134491470,4ptp4l0-21swapper/012:09:280
134491470,4ptp4l0-21swapper/011:05:350
134491470,4ptp4l0-21swapper/007:10:420
134491470,3ptp4l0-21swapper/209:56:052
134491470,3ptp4l0-21swapper/009:43:030
134491470,3ptp4l0-21swapper/009:20:210
134491470,3ptp4l0-21swapper/007:50:140
134491460,4ptp4l0-21swapper/308:25:103
134491460,4ptp4l0-21swapper/010:06:060
134491460,3ptp4l0-21swapper/211:04:552
134491460,3ptp4l0-21swapper/108:37:391
134491460,3ptp4l0-21swapper/011:26:090
134491460,3ptp4l0-21swapper/010:20:100
2707399450,2cyclictest121rcu_preempt07:55:583
1378914520,19phc2sys26822-21ls07:10:012
134491450,3ptp4l0-21swapper/209:01:462
134491450,3ptp4l0-21swapper/207:37:202
134491450,3ptp4l0-21swapper/111:55:241
134491450,3ptp4l0-21swapper/111:25:241
134491450,3ptp4l0-21swapper/110:02:051
134491450,3ptp4l0-21swapper/107:53:201
2707299441,41cyclictest0-21swapper/212:33:392
2707199448,34cyclictest15738-21kworker/1:110:35:491
27071994414,28cyclictest0-21swapper/111:15:591
27071994414,28cyclictest0-21swapper/111:15:591
134491440,5ptp4l5508-21df11:00:130
134491440,3ptp4l10111-21apt-get11:10:110
134491440,3ptp4l0-21swapper/208:17:252
134491440,3ptp4l0-21swapper/010:57:530
134491440,10ptp4l0-21swapper/309:53:383
134691430,8getstats2707199cyclictest09:24:511
134491430,4ptp4l32148-21hddtemp_smartct07:20:170
134491430,3ptp4l0-21swapper/111:03:001
134491430,13ptp4l0-21swapper/309:45:353
27073994237,3cyclictest41-21ksoftirqd/310:40:013
27073994237,3cyclictest41-21ksoftirqd/308:45:003
27073994237,3cyclictest41-21ksoftirqd/308:35:003
2707199421,39cyclictest0-21swapper/110:16:281
134491420,9ptp4l0-21swapper/210:59:152
134491420,9ptp4l0-21swapper/010:54:330
134491420,5ptp4l0-21swapper/307:25:133
134491420,5ptp4l0-21swapper/107:55:291
134491420,5ptp4l0-21swapper/010:14:580
134491420,4ptp4l8630-21apt-get10:00:042
134491420,4ptp4l30521-21ntp_states07:15:233
134491420,4ptp4l29558-21apt-get08:25:091
134491420,4ptp4l27961-21apt-get10:40:022
134491420,4ptp4l16663-21ls12:30:271
134491420,4ptp4l11618-21df10:05:131
134491420,4ptp4l0-21swapper/310:01:083
134491420,4ptp4l0-21swapper/110:58:401
134491420,4ptp4l0-21swapper/008:32:330
134491420,3ptp4l988-21apt-get12:00:102
134491420,3ptp4l8722-21ntp_states11:05:241
134491420,3ptp4l19533-21apt-get11:30:121
134491420,3ptp4l0-21swapper/211:33:412
134491420,3ptp4l0-21swapper/110:24:061
27073994136,3cyclictest41-21ksoftirqd/312:39:593
134491410,8ptp4l0-21swapper/212:38:192
134491410,8ptp4l0-21swapper/209:37:432
134491410,5ptp4l0-21swapper/311:20:203
134491410,5ptp4l0-21swapper/212:15:282
134491410,5ptp4l0-21swapper/211:50:112
134491410,5ptp4l0-21swapper/211:20:122
134491410,5ptp4l0-21swapper/207:10:242
134491410,5ptp4l0-21swapper/110:50:201
134491410,5ptp4l0-21swapper/108:05:171
134491410,5ptp4l0-21swapper/011:40:110
134491410,4ptp4l5646-21users07:30:300
134491410,4ptp4l5646-21users07:30:300
134491410,4ptp4l4588-21diskstats09:50:130
134491410,4ptp4l25442-21apt-get10:35:022
134491410,4ptp4l22589-21apt-get08:10:152
134491410,4ptp4l15850-21apt-get09:05:113
134491410,4ptp4l13551-21apt-get09:00:130
134491410,4ptp4l13470-21apt-get10:10:012
134491410,4ptp4l11782-21users11:10:281
134491410,4ptp4l0-21swapper/112:35:271
134491410,4ptp4l0-21swapper/112:21:221
134491410,4ptp4l0-21swapper/110:45:141
134491410,4ptp4l0-21swapper/109:35:101
134491410,4ptp4l0-21swapper/010:01:580
134491410,4ptp4l0-21swapper/009:55:090
134491410,3ptp4l6240-21iostat_ios12:10:161
134491410,3ptp4l25891-21meminfo08:15:201
134491410,3ptp4l21829-21apt-get11:35:123
134491410,3ptp4l1957-21ls12:00:161
134491410,3ptp4l18143-21apt-get09:10:123
134491410,3ptp4l0-21swapper/210:08:402
27073994035,3cyclictest41-21ksoftirqd/310:50:193
27071994010,28cyclictest15738-21kworker/1:110:30:391
134491400,5ptp4l25-21ksoftirqd/109:25:151
134491400,5ptp4l23657-21chrt11:37:162
134491400,5ptp4l0-21swapper/311:50:113
134491400,5ptp4l0-21swapper/309:04:593
134491400,5ptp4l0-21swapper/208:45:192
134491400,5ptp4l0-21swapper/109:59:171
134491400,5ptp4l0-21swapper/109:50:521
134491400,5ptp4l0-21swapper/109:00:231
134491400,5ptp4l0-21swapper/107:19:591
134491400,4ptp4l29388-21/usr/sbin/munin10:40:211
134491400,4ptp4l28087-21/usr/sbin/munin07:10:213
134491400,4ptp4l23397-21ls11:35:271
134491400,4ptp4l19307-21phc2sys09:10:230
134491400,4ptp4l11543-21diskstats08:55:161
134491400,4ptp4l0-21swapper/311:58:013
134491400,4ptp4l0-21swapper/311:19:343
134491400,4ptp4l0-21swapper/311:19:343
134491400,4ptp4l0-21swapper/311:00:243
134491400,4ptp4l0-21swapper/307:50:233
134491400,4ptp4l0-21swapper/307:47:493
134491400,4ptp4l0-21swapper/212:27:322
134491400,4ptp4l0-21swapper/212:21:032
134491400,4ptp4l0-21swapper/212:11:042
134491400,4ptp4l0-21swapper/211:29:092
134491400,4ptp4l0-21swapper/211:15:192
134491400,4ptp4l0-21swapper/211:15:192
134491400,4ptp4l0-21swapper/209:30:312
134491400,4ptp4l0-21swapper/209:10:222
134491400,4ptp4l0-21swapper/208:27:302
134491400,4ptp4l0-21swapper/208:01:092
134491400,4ptp4l0-21swapper/207:41:532
134491400,4ptp4l0-21swapper/109:15:261
134491400,4ptp4l0-21swapper/108:45:141
134491400,4ptp4l0-21swapper/010:48:390
134491400,4ptp4l0-21swapper/010:15:010
134491400,4ptp4l0-21swapper/008:10:460
134491400,4ptp4l0-21swapper/007:47:290
134491400,3ptp4l6538-21apt-config08:45:013
134491400,3ptp4l30121-21iostat08:25:150
134491400,3ptp4l29709-21apt-get09:35:110
134491400,3ptp4l21041-21apt-get10:25:123
134491400,3ptp4l21041-21apt-get10:25:123
27073993935,2cyclictest41-21ksoftirqd/312:10:003
27073993934,3cyclictest41-21ksoftirqd/310:45:183
27073993934,2cyclictest41-21ksoftirqd/311:15:003
134491390,5ptp4l13252-21sed12:25:163
134491390,5ptp4l0-21swapper/110:29:251
134491390,5ptp4l0-21swapper/110:29:251
134491390,5ptp4l0-21swapper/012:15:170
134491390,4ptp4l0-21swapper/312:34:593
134491390,4ptp4l0-21swapper/312:18:293
134491390,4ptp4l0-21swapper/311:45:003
134491390,4ptp4l0-21swapper/311:30:143
134491390,4ptp4l0-21swapper/311:25:383
134491390,4ptp4l0-21swapper/311:05:173
134491390,4ptp4l0-21swapper/310:41:363
134491390,4ptp4l0-21swapper/310:30:283
134491390,4ptp4l0-21swapper/310:12:373
134491390,4ptp4l0-21swapper/309:19:333
134491390,4ptp4l0-21swapper/308:54:583
134491390,4ptp4l0-21swapper/308:15:153
134491390,4ptp4l0-21swapper/308:05:543
134491390,4ptp4l0-21swapper/308:00:273
134491390,4ptp4l0-21swapper/307:32:333
134491390,4ptp4l0-21swapper/307:32:333
134491390,4ptp4l0-21swapper/307:20:293
134491390,4ptp4l0-21swapper/211:42:582
134491390,4ptp4l0-21swapper/211:08:432
134491390,4ptp4l0-21swapper/210:32:492
134491390,4ptp4l0-21swapper/209:26:322
134491390,4ptp4l0-21swapper/209:23:242
134491390,4ptp4l0-21swapper/208:54:482
134491390,4ptp4l0-21swapper/208:37:212
134491390,4ptp4l0-21swapper/208:23:302
134491390,4ptp4l0-21swapper/207:47:272
134491390,4ptp4l0-21swapper/112:25:011
134491390,4ptp4l0-21swapper/112:07:471
134491390,4ptp4l0-21swapper/109:46:351
134491390,4ptp4l0-21swapper/108:20:201
134491390,4ptp4l0-21swapper/108:12:561
134491390,4ptp4l0-21swapper/107:45:211
134491390,4ptp4l0-21swapper/107:44:081
134491390,4ptp4l0-21swapper/011:20:160
134491390,4ptp4l0-21swapper/009:49:430
134491390,4ptp4l0-21swapper/009:15:450
134491390,4ptp4l0-21swapper/007:25:100
134491390,4ptp4l0-21swapper/007:15:120
134491390,3ptp4l5543-21ls07:30:291
134491390,3ptp4l5543-21ls07:30:291
134491390,3ptp4l24573-21hddtemp_smartct11:40:151
134491390,3ptp4l0-21swapper/312:24:073
134491390,3ptp4l0-21swapper/210:52:332
134491390,3ptp4l0-21swapper/208:07:472
134491390,3ptp4l0-21swapper/111:22:561
134491390,3ptp4l0-21swapper/107:14:591
27073993833,3cyclictest41-21ksoftirqd/312:00:163
27073993833,3cyclictest41-21ksoftirqd/309:45:013
27073993833,3cyclictest41-21ksoftirqd/307:35:183
134491380,4ptp4l18898-21ntpq08:00:231
134491380,4ptp4l0-21swapper/310:05:593
134491380,4ptp4l0-21swapper/309:55:323
134491380,4ptp4l0-21swapper/309:35:153
134491380,4ptp4l0-21swapper/309:32:453
134491380,4ptp4l0-21swapper/309:20:153
134491380,4ptp4l0-21swapper/308:10:033
134491380,4ptp4l0-21swapper/210:25:062
134491380,4ptp4l0-21swapper/210:25:062
134491380,4ptp4l0-21swapper/109:40:051
134491380,4ptp4l0-21swapper/109:12:281
134491380,4ptp4l0-21swapper/109:09:041
134491380,4ptp4l0-21swapper/108:51:411
134491380,4ptp4l0-21swapper/108:40:221
134491380,4ptp4l0-21swapper/108:34:031
134491380,4ptp4l0-21swapper/107:25:231
134491380,4ptp4l0-21swapper/008:35:120
134491380,4ptp4l0-21swapper/008:00:120
134491380,3ptp4l969-21users07:20:291
134491380,3ptp4l6379-21cpuspeed_turbos07:35:131
134491380,3ptp4l28568-21phc2sys09:30:231
134491380,3ptp4l0-21swapper/310:55:163
134491380,3ptp4l0-21swapper/308:55:173
134491380,3ptp4l0-21swapper/210:45:242
134491380,3ptp4l0-21swapper/209:50:332
134491380,3ptp4l0-21swapper/111:50:061
27073993733,3cyclictest41-21ksoftirqd/310:15:203
27073993732,3cyclictest41-21ksoftirqd/312:10:173
27073993732,3cyclictest41-21ksoftirqd/310:25:003
134491370,4ptp4l0-21swapper/307:44:483
134491370,4ptp4l0-21swapper/210:21:282
134491370,4ptp4l0-21swapper/210:19:162
134491370,4ptp4l0-21swapper/207:59:102
134491370,3ptp4l0-21swapper/308:38:473
134491360,4ptp4l0-21swapper/309:28:443
246862113,4sleep30-21swapper/307:05:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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