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2026-04-16 - 22:27
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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 Thu Apr 16, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491620,5ptp4l0-21swapper/110:20:141
134491600,4ptp4l14072-21apt-get07:40:030
134491600,4ptp4l0-21swapper/012:25:140
134491590,4ptp4l0-21swapper/209:43:582
134491590,18ptp4l824-21df_inode09:30:141
134491590,17ptp4l22235-21hddtemp_smartct10:15:161
134491580,4ptp4l0-21swapper/312:05:213
134491570,3ptp4l31009-21apt-get10:35:141
134491560,4ptp4l0-21swapper/108:55:321
134491560,4ptp4l0-21swapper/108:35:231
134491560,3ptp4l0-21swapper/211:53:172
134491560,3ptp4l0-21swapper/111:01:441
134491560,3ptp4l0-21swapper/111:01:441
134491560,3ptp4l0-21swapper/107:27:191
134491550,4ptp4l0-21swapper/310:50:133
134491550,4ptp4l0-21swapper/307:07:243
134491550,4ptp4l0-21swapper/109:47:071
134491550,3ptp4l0-21swapper/111:43:261
134491540,5ptp4l0-21swapper/207:06:202
134491540,4ptp4l0-21swapper/212:17:432
134491540,4ptp4l0-21swapper/110:51:261
134491540,4ptp4l0-21swapper/108:34:451
134491540,3ptp4l0-21swapper/108:40:171
134491540,2ptp4l23016-21strings11:25:231
134491530,4ptp4l0-21swapper/211:31:112
134491530,3ptp4l7126-21meminfo12:00:201
134491530,3ptp4l22391-21meminfo09:05:211
134491530,3ptp4l0-21swapper/312:25:273
134491530,3ptp4l0-21swapper/111:50:131
134491530,3ptp4l0-21swapper/110:12:071
134491520,4ptp4l0-21swapper/009:36:420
134491520,3ptp4l0-21swapper/108:00:231
134491510,4ptp4l0-21swapper/109:12:161
134491510,3ptp4l0-21swapper/110:05:191
134491500,4ptp4l0-21swapper/108:27:101
134491500,3ptp4l0-21swapper/109:57:241
134491500,3ptp4l0-21swapper/109:18:411
134491500,3ptp4l0-21swapper/108:50:021
134491500,3ptp4l0-21swapper/107:55:271
134491500,3ptp4l0-21swapper/107:41:181
134491500,3ptp4l0-21swapper/107:10:581
134491500,3ptp4l0-21swapper/011:22:390
134491490,4ptp4l0-21swapper/307:59:193
134491490,4ptp4l0-21swapper/107:30:001
134491490,3ptp4l0-21swapper/311:15:203
134491490,3ptp4l0-21swapper/109:01:081
134491490,3ptp4l0-21swapper/107:17:191
134491480,4ptp4l0-21swapper/208:11:532
134491480,4ptp4l0-21swapper/208:11:532
134491480,4ptp4l0-21swapper/112:35:071
134491480,4ptp4l0-21swapper/010:23:060
134491480,4ptp4l0-21swapper/010:17:580
134491480,18ptp4l0-21swapper/311:50:303
134491470,4ptp4l0-21swapper/109:50:201
134491470,4ptp4l0-21swapper/012:07:220
134491470,3ptp4l0-21swapper/312:14:283
134491470,3ptp4l0-21swapper/111:11:511
134491470,15ptp4l9-21ksoftirqd/009:16:000
134491470,14ptp4l9-21ksoftirqd/009:52:160
134491470,12ptp4l0-21swapper/008:14:250
134491470,12ptp4l0-21swapper/008:14:250
134491470,11ptp4l0-21swapper/112:10:171
134691460,11getstats0-21swapper/108:16:311
134491460,5ptp4l0-21swapper/107:09:551
134491460,4ptp4l0-21swapper/312:04:283
134491460,4ptp4l0-21swapper/209:23:052
134491460,3ptp4l0-21swapper/110:58:181
134491460,10ptp4l0-21swapper/007:13:270
134491450,4ptp4l29094-21apt-get11:40:132
134491450,4ptp4l17356-21apt-get11:15:130
134491450,4ptp4l0-21swapper/312:24:493
134491450,4ptp4l0-21swapper/212:00:462
134491450,4ptp4l0-21swapper/110:02:301
134491450,4ptp4l0-21swapper/107:20:191
134491450,3ptp4l0-21swapper/108:24:551
134491450,10ptp4l0-21swapper/008:44:240
336994439,3cyclictest41-21ksoftirqd/309:20:013
134691440,11getstats0-21swapper/112:31:011
134691440,11getstats0-21swapper/112:29:341
134491440,9ptp4l0-21swapper/210:13:302
134491440,9ptp4l0-21swapper/208:36:542
134491440,9ptp4l0-21swapper/011:33:240
134491440,9ptp4l0-21swapper/009:33:260
134491440,5ptp4l0-21swapper/008:25:260
134491440,4ptp4l3647-21apt-get11:55:132
134491440,4ptp4l23796-21apt-get08:00:122
134491440,3ptp4l0-21swapper/107:39:531
134491440,3ptp4l0-21swapper/011:42:560
134491440,3ptp4l0-21swapper/011:30:010
134491440,10ptp4l0-21swapper/108:48:531
333994338,3cyclictest9-21ksoftirqd/008:20:010
134691430,11getstats0-21swapper/110:43:191
134691430,10getstats0-21swapper/108:13:111
134691430,10getstats0-21swapper/108:13:111
134691430,10getstats0-21swapper/108:05:301
134491430,9ptp4l0-21swapper/210:56:282
134491430,9ptp4l0-21swapper/210:01:082
134491430,9ptp4l0-21swapper/208:54:202
134491430,5ptp4l0-21swapper/209:35:132
134491430,4ptp4l3735-21meminfo07:15:202
134491430,4ptp4l31388-21apt-get11:45:130
134491430,4ptp4l31388-21apt-get11:45:130
134491430,4ptp4l2969-21apt-get08:25:122
134491430,4ptp4l0-21swapper/212:29:322
134491430,3ptp4l27507-21ls11:35:210
134491430,3ptp4l0-21swapper/109:25:451
134491430,3ptp4l0-21swapper/010:26:590
46198420,2rtkit-daemon460-21rtkit-daemon11:05:172
46198420,2rtkit-daemon460-21rtkit-daemon11:05:172
33599420,2cyclictest137891phc2sys08:15:122
134691420,11getstats0-21swapper/111:56:271
134691420,11getstats0-21swapper/111:30:461
134691420,10getstats0-21swapper/111:38:371
134691420,10getstats0-21swapper/111:22:061
134691420,10getstats0-21swapper/110:49:191
134491420,9ptp4l0-21swapper/212:37:362
134491420,9ptp4l0-21swapper/211:49:552
134491420,9ptp4l0-21swapper/211:49:552
134491420,9ptp4l0-21swapper/010:12:020
134491420,5ptp4l0-21swapper/310:00:243
134491420,4ptp4l6899-21users09:40:291
134491420,4ptp4l5799-21df10:50:160
134491420,4ptp4l5474-21df08:30:140
134491420,4ptp4l16336-21meminfo12:20:201
134491420,4ptp4l16231-21irqstats12:20:192
134491420,4ptp4l0-21swapper/007:28:410
134491420,3ptp4l4307-21ls10:45:230
336994136,3cyclictest41-21ksoftirqd/312:40:013
336994135,3cyclictest41-21ksoftirqd/308:20:003
333994136,3cyclictest9-21ksoftirqd/012:40:000
134691410,9getstats0-21swapper/107:45:291
134491410,5ptp4l23114-21users09:05:280
134491410,5ptp4l0-21swapper/311:36:163
134491410,5ptp4l0-21swapper/309:45:133
134491410,5ptp4l0-21swapper/207:10:112
134491410,5ptp4l0-21swapper/112:15:251
134491410,5ptp4l0-21swapper/012:30:250
134491410,5ptp4l0-21swapper/007:09:550
134491410,4ptp4l3751-21irqstats09:35:201
134491410,4ptp4l19485-21df_inode07:50:140
134491410,4ptp4l11336-21iostat12:10:160
134491410,4ptp4l0-21swapper/210:16:142
134491410,4ptp4l0-21swapper/111:45:131
134491410,4ptp4l0-21swapper/111:45:131
134491410,3ptp4l29775-21ls09:20:250
134491410,3ptp4l24365-21iostat_ios08:00:180
134491410,3ptp4l21480-21apt-get07:55:140
134491410,3ptp4l19137-21apt-get09:00:100
134491410,3ptp4l10770-21apt-get12:10:112
134491410,3ptp4l0-21swapper/212:32:092
134491410,3ptp4l0-21swapper/009:47:040
336994035,2cyclictest41-21ksoftirqd/309:10:003
336994034,3cyclictest41-21ksoftirqd/312:00:003
333994035,3cyclictest9-21ksoftirqd/011:55:000
134491400,4ptp4l7280-21apt-get09:45:012
134491400,4ptp4l23943-21df09:10:130
134491400,4ptp4l18006-21ntp_states07:45:220
134491400,4ptp4l15597-21/usr/sbin/munin12:20:140
134491400,4ptp4l14898-21/usr/sbin/munin08:50:160
134491400,4ptp4l14016-21meminfo12:15:190
134491400,4ptp4l1301-21snmpd11:03:130
134491400,4ptp4l1301-21snmpd11:03:120
134491400,4ptp4l0-21swapper/312:15:223
134491400,4ptp4l0-21swapper/310:11:223
134491400,4ptp4l0-21swapper/307:35:153
134491400,4ptp4l0-21swapper/307:15:243
134491400,4ptp4l0-21swapper/211:39:072
134491400,4ptp4l0-21swapper/211:11:032
134491400,4ptp4l0-21swapper/210:40:102
134491400,4ptp4l0-21swapper/210:25:562
134491400,4ptp4l0-21swapper/210:05:392
134491400,4ptp4l0-21swapper/208:31:072
134491400,4ptp4l0-21swapper/207:35:072
134491400,4ptp4l0-21swapper/207:34:252
134491400,4ptp4l0-21swapper/207:23:242
134491400,4ptp4l0-21swapper/111:15:271
134491400,4ptp4l0-21swapper/110:30:211
134491400,4ptp4l0-21swapper/109:20:141
134491400,4ptp4l0-21swapper/107:50:211
134491400,4ptp4l0-21swapper/011:57:490
134491400,4ptp4l0-21swapper/011:10:280
134491400,4ptp4l0-21swapper/008:58:240
134491400,4ptp4l0-21swapper/007:15:280
134491400,3ptp4l30648-21apt-get09:25:110
134491400,3ptp4l28925-21df10:30:140
134491400,3ptp4l27261-21irqstats10:25:171
134491400,3ptp4l0-21swapper/007:30:260
336993934,3cyclictest41-21ksoftirqd/310:29:593
336993934,3cyclictest41-21ksoftirqd/307:45:113
333993934,3cyclictest9-21ksoftirqd/010:45:010
134491390,5ptp4l0-21swapper/311:40:153
134491390,5ptp4l0-21swapper/309:27:033
134491390,5ptp4l0-21swapper/210:49:442
134491390,4ptp4l0-21swapper/312:30:293
134491390,4ptp4l0-21swapper/311:30:113
134491390,4ptp4l0-21swapper/311:10:273
134491390,4ptp4l0-21swapper/310:16:063
134491390,4ptp4l0-21swapper/310:07:083
134491390,4ptp4l0-21swapper/309:54:063
134491390,4ptp4l0-21swapper/309:43:483
134491390,4ptp4l0-21swapper/308:55:093
134491390,4ptp4l0-21swapper/308:52:163
134491390,4ptp4l0-21swapper/308:35:153
134491390,4ptp4l0-21swapper/308:25:123
134491390,4ptp4l0-21swapper/308:21:493
134491390,4ptp4l0-21swapper/307:14:493
134491390,4ptp4l0-21swapper/211:26:472
134491390,4ptp4l0-21swapper/211:22:162
134491390,4ptp4l0-21swapper/211:15:212
134491390,4ptp4l0-21swapper/211:01:592
134491390,4ptp4l0-21swapper/211:01:582
134491390,4ptp4l0-21swapper/210:52:532
134491390,4ptp4l0-21swapper/210:21:582
134491390,4ptp4l0-21swapper/209:57:112
134491390,4ptp4l0-21swapper/209:50:392
134491390,4ptp4l0-21swapper/209:33:472
134491390,4ptp4l0-21swapper/209:28:182
134491390,4ptp4l0-21swapper/209:17:182
134491390,4ptp4l0-21swapper/209:12:182
134491390,4ptp4l0-21swapper/209:09:092
134491390,4ptp4l0-21swapper/209:01:322
134491390,4ptp4l0-21swapper/208:57:102
134491390,4ptp4l0-21swapper/208:45:412
134491390,4ptp4l0-21swapper/208:42:162
134491390,4ptp4l0-21swapper/208:06:382
134491390,4ptp4l0-21swapper/207:56:522
134491390,4ptp4l0-21swapper/207:48:572
134491390,4ptp4l0-21swapper/111:05:191
134491390,4ptp4l0-21swapper/111:05:191
134491390,4ptp4l0-21swapper/011:05:170
134491390,4ptp4l0-21swapper/011:05:170
134491390,4ptp4l0-21swapper/010:05:040
134491390,4ptp4l0-21swapper/010:00:480
134491390,4ptp4l0-21swapper/008:45:260
134491390,4ptp4l0-21swapper/008:37:020
134491390,4ptp4l0-21swapper/008:24:190
134491390,4ptp4l0-21swapper/008:06:480
134491390,4ptp4l0-21swapper/007:35:170
134491390,4ptp4l0-21swapper/007:20:220
134491390,3ptp4l9596-21ntp_states12:05:232
134491390,3ptp4l31318-21diskstats10:35:160
134491390,3ptp4l0-21swapper/012:00:110
134491390,2ptp4l10046-21ls12:05:271
336993834,3cyclictest41-21ksoftirqd/309:15:003
336993833,3cyclictest41-21ksoftirqd/311:05:283
336993833,3cyclictest41-21ksoftirqd/311:05:283
336993833,3cyclictest41-21ksoftirqd/310:50:003
336993832,4cyclictest41-21ksoftirqd/307:45:003
336993832,3cyclictest41-21ksoftirqd/308:05:273
134491380,4ptp4l1089-21interrupts09:30:173
134491380,4ptp4l0-21swapper/311:29:393
134491380,4ptp4l0-21swapper/311:00:013
134491380,4ptp4l0-21swapper/311:00:013
134491380,4ptp4l0-21swapper/308:41:223
134491380,4ptp4l0-21swapper/308:30:383
134491380,4ptp4l0-21swapper/308:13:403
134491380,4ptp4l0-21swapper/308:13:403
134491380,4ptp4l0-21swapper/210:37:022
134491380,4ptp4l0-21swapper/208:20:312
134491380,4ptp4l0-21swapper/207:54:182
134491380,4ptp4l0-21swapper/207:27:142
134491380,4ptp4l0-21swapper/010:57:460
134491380,4ptp4l0-21swapper/009:56:490
134491380,3ptp4l5531-21df_inode09:40:140
134491380,3ptp4l0-21swapper/311:49:573
134491380,3ptp4l0-21swapper/311:49:573
134491380,3ptp4l0-21swapper/210:30:172
336993731,3cyclictest41-21ksoftirqd/307:30:173
134491370,4ptp4l0-21swapper/310:37:103
134491370,4ptp4l0-21swapper/310:21:063
134491370,4ptp4l0-21swapper/309:23:073
134491370,4ptp4l0-21swapper/307:25:023
134491370,4ptp4l0-21swapper/207:42:022
134491370,3ptp4l0-21swapper/307:52:253
134491370,3ptp4l0-21swapper/307:20:523
134491360,5ptp4l0-21swapper/308:45:213
134491360,4ptp4l0-21swapper/310:58:123
134491360,4ptp4l0-21swapper/309:55:273
134491360,3ptp4l0-21swapper/309:35:293
134491360,3ptp4l0-21swapper/309:04:053
134491350,3ptp4l0-21swapper/311:21:243
134491350,3ptp4l0-21swapper/310:41:233
134491350,3ptp4l0-21swapper/308:05:003
336993429,3cyclictest41-21ksoftirqd/310:30:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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