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2026-04-28 - 22:42
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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 Apr 28, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3269721600,3sleep12181599cyclictest09:50:181
813421590,4sleep32181799cyclictest10:05:283
179212770,1sleep317922-21/usr/sbin/munin08:10:153
21816996734,4cyclictest33-21ksoftirqd/207:30:192
21816996733,6cyclictest33-21ksoftirqd/210:10:002
21815996732,6cyclictest25-21ksoftirqd/111:30:001
21816996630,8cyclictest33-21ksoftirqd/210:35:162
21816996531,7cyclictest33-21ksoftirqd/211:50:242
134491650,15ptp4l0-21swapper/007:45:190
21816996330,9cyclictest33-21ksoftirqd/211:25:272
21816996328,6cyclictest33-21ksoftirqd/209:55:252
21815996328,8cyclictest25-21ksoftirqd/110:38:431
21816996232,6cyclictest33-21ksoftirqd/208:40:182
21816996231,9cyclictest33-21ksoftirqd/210:30:282
21816996230,5cyclictest33-21ksoftirqd/211:55:142
21816996225,5cyclictest33-21ksoftirqd/207:20:132
21815996229,7cyclictest25-21ksoftirqd/108:10:251
21815996229,6cyclictest25-21ksoftirqd/111:50:181
21816996131,8cyclictest33-21ksoftirqd/207:35:262
21816996131,5cyclictest33-21ksoftirqd/212:20:152
21816996130,4cyclictest33-21ksoftirqd/209:46:132
21816996128,4cyclictest33-21ksoftirqd/210:49:352
21816996126,7cyclictest33-21ksoftirqd/211:22:212
21816996032,6cyclictest33-21ksoftirqd/208:20:252
21816996031,6cyclictest33-21ksoftirqd/208:10:142
21816996029,9cyclictest33-21ksoftirqd/208:15:142
21816996028,4cyclictest33-21ksoftirqd/207:15:002
21816996027,5cyclictest33-21ksoftirqd/209:10:262
21816996024,6cyclictest33-21ksoftirqd/207:17:052
21815996028,7cyclictest25-21ksoftirqd/110:15:161
134491600,3ptp4l0-21swapper/111:40:211
21816995933,8cyclictest33-21ksoftirqd/207:25:212
21816995928,9cyclictest33-21ksoftirqd/211:30:162
21816995928,8cyclictest33-21ksoftirqd/211:00:012
21816995928,8cyclictest33-21ksoftirqd/211:00:002
21816995925,7cyclictest33-21ksoftirqd/212:25:142
21816995925,7cyclictest33-21ksoftirqd/212:10:232
21816995925,5cyclictest33-21ksoftirqd/209:05:282
21815995928,5cyclictest25-21ksoftirqd/111:10:131
21816995829,9cyclictest33-21ksoftirqd/211:05:182
21816995829,10cyclictest33-21ksoftirqd/209:35:132
21816995827,5cyclictest33-21ksoftirqd/207:40:212
21816995823,3cyclictest33-21ksoftirqd/208:38:222
21815995828,8cyclictest25-21ksoftirqd/111:45:131
134491580,4ptp4l0-21swapper/011:29:030
134491580,3ptp4l0-21swapper/008:17:480
21816995730,4cyclictest33-21ksoftirqd/212:15:142
21816995729,8cyclictest33-21ksoftirqd/209:40:202
134491570,3ptp4l0-21swapper/107:20:151
21816995629,9cyclictest33-21ksoftirqd/212:35:172
21816995628,4cyclictest33-21ksoftirqd/207:50:282
21816995627,9cyclictest33-21ksoftirqd/212:30:172
21816995627,8cyclictest33-21ksoftirqd/211:40:002
21816995624,5cyclictest33-21ksoftirqd/209:00:202
21816995620,4cyclictest33-21ksoftirqd/210:23:412
21815995627,8cyclictest25-21ksoftirqd/110:10:261
21815995621,7cyclictest25-21ksoftirqd/107:10:191
134491560,3ptp4l0-21swapper/112:24:471
134491560,3ptp4l0-21swapper/108:50:231
21816995526,10cyclictest33-21ksoftirqd/212:05:192
21816995523,8cyclictest33-21ksoftirqd/208:25:212
21815995521,6cyclictest25-21ksoftirqd/108:15:131
21815995520,6cyclictest25-21ksoftirqd/110:44:481
134491550,4ptp4l0-21swapper/012:04:290
134491550,4ptp4l0-21swapper/009:45:260
134491550,3ptp4l0-21swapper/110:20:171
134491550,3ptp4l0-21swapper/010:45:140
2181699546,6cyclictest33-21ksoftirqd/209:50:282
134491540,3ptp4l41-21ksoftirqd/311:05:233
2181599536,10cyclictest25-21ksoftirqd/111:30:271
2181599535,8cyclictest25-21ksoftirqd/109:20:241
2181599533,6cyclictest25-21ksoftirqd/109:00:191
2181599533,5cyclictest241ktimersoftd/107:55:261
21815995322,7cyclictest25-21ksoftirqd/111:20:171
21815995322,7cyclictest25-21ksoftirqd/107:25:131
21815995320,7cyclictest25-21ksoftirqd/108:25:241
21815995318,7cyclictest25-21ksoftirqd/108:00:291
21815995318,7cyclictest25-21ksoftirqd/108:00:291
134491530,5ptp4l0-21swapper/010:28:110
134491530,4ptp4l0-21swapper/109:38:561
2181699528,5cyclictest21732-21phc2sys-jitter09:25:232
2181599525,8cyclictest25-21ksoftirqd/110:25:151
2181599524,8cyclictest25-21ksoftirqd/110:50:191
21815995216,8cyclictest25-21ksoftirqd/112:34:121
134491520,5ptp4l0-21swapper/007:07:370
134491520,18ptp4l9-21ksoftirqd/011:19:110
2181699515,5cyclictest28928-21latency_hist08:35:012
2181699514,5cyclictest33-21ksoftirqd/211:40:162
2181699514,10cyclictest33-21ksoftirqd/210:50:142
2181699512,5cyclictest33-21ksoftirqd/209:15:242
2181699512,11cyclictest0-21swapper/208:50:172
2181599515,5cyclictest25-21ksoftirqd/111:05:281
21815995122,4cyclictest25-21ksoftirqd/112:35:151
2181599511,5cyclictest25-21ksoftirqd/112:00:221
2181599510,6cyclictest17939-21wc09:20:001
2181699505,10cyclictest33-21ksoftirqd/209:30:292
2181699503,8cyclictest33-21ksoftirqd/211:50:012
2181699503,7cyclictest0-21swapper/208:45:202
2181699502,6cyclictest0-21swapper/210:15:122
2181699502,6cyclictest0-21swapper/207:55:182
2181699502,5cyclictest33-21ksoftirqd/210:10:192
21816995020,4cyclictest33-21ksoftirqd/209:20:152
2181599506,9cyclictest25-21ksoftirqd/108:22:591
2181599505,7cyclictest25-21ksoftirqd/111:15:201
2181599504,9cyclictest25-21ksoftirqd/109:55:111
2181599503,6cyclictest25-21ksoftirqd/109:40:211
2181599503,6cyclictest25-21ksoftirqd/108:10:001
2181599500,7cyclictest25-21ksoftirqd/110:35:001
2181599500,7cyclictest25-21ksoftirqd/109:30:271
134491500,4ptp4l0-21swapper/107:05:311
134491500,4ptp4l0-21swapper/010:30:470
134491500,3ptp4l0-21swapper/008:32:450
2181699492,6cyclictest33-21ksoftirqd/208:05:282
2181699492,6cyclictest0-21swapper/208:55:232
2181699492,5cyclictest33-21ksoftirqd/207:45:252
21816994919,7cyclictest33-21ksoftirqd/211:10:382
2181699491,7cyclictest33-21ksoftirqd/210:25:152
2181699491,4cyclictest33-21ksoftirqd/211:20:002
2181599495,9cyclictest25-21ksoftirqd/110:00:141
2181599493,7cyclictest25-21ksoftirqd/107:35:311
2181599493,6cyclictest25-21ksoftirqd/109:25:181
2181599492,7cyclictest0-21swapper/108:56:491
21815994925,6cyclictest25-21ksoftirqd/110:58:481
21815994925,6cyclictest25-21ksoftirqd/110:58:481
21815994920,5cyclictest25-21ksoftirqd/107:43:191
2181599490,7cyclictest25-21ksoftirqd/112:15:161
2181599490,5cyclictest25-21ksoftirqd/107:45:251
134491490,4ptp4l0-21swapper/112:10:511
134491490,4ptp4l0-21swapper/009:25:440
134491490,3ptp4l0-21swapper/111:39:511
2181699482,7cyclictest33-21ksoftirqd/211:00:262
2181699482,5cyclictest33-21ksoftirqd/208:00:142
2181699482,5cyclictest33-21ksoftirqd/208:00:142
2181599484,8cyclictest25-21ksoftirqd/109:10:251
2181599484,7cyclictest25-21ksoftirqd/111:00:131
2181599482,6cyclictest25-21ksoftirqd/109:45:251
2181599482,5cyclictest25-21ksoftirqd/110:10:001
21815994819,5cyclictest25-21ksoftirqd/108:48:141
134491480,3ptp4l28513-21ntp_states10:50:240
134491480,3ptp4l0-21swapper/107:30:441
134491480,3ptp4l0-21swapper/007:23:010
2181699473,7cyclictest33-21ksoftirqd/212:00:292
2181699472,6cyclictest0-21swapper/210:40:132
2181599475,8cyclictest25-21ksoftirqd/108:30:211
2181599474,9cyclictest25-21ksoftirqd/109:05:221
2181599474,5cyclictest0-21swapper/112:05:211
2181599470,5cyclictest25346-21ps07:15:231
134491470,4ptp4l41-21ksoftirqd/308:35:193
134491470,4ptp4l0-21swapper/107:54:301
134491470,4ptp4l0-21swapper/012:38:130
134491470,3ptp4l0-21swapper/010:38:410
21816994615,10cyclictest33-21ksoftirqd/210:00:172
2181599465,9cyclictest25-21ksoftirqd/108:40:231
2181599464,7cyclictest25-21ksoftirqd/108:35:191
2181599464,6cyclictest25-21ksoftirqd/112:25:221
2181599462,7cyclictest0-21swapper/110:47:381
134491460,6ptp4l101ktimersoftd/007:43:440
134491460,5ptp4l0-21swapper/307:30:133
134491460,3ptp4l0-21swapper/011:24:020
134491460,12ptp4l9-21ksoftirqd/011:46:190
134491450,9ptp4l0-21swapper/312:15:463
134491450,9ptp4l0-21swapper/308:03:403
134491450,9ptp4l0-21swapper/308:03:403
134491450,9ptp4l0-21swapper/010:57:080
134491450,9ptp4l0-21swapper/010:57:070
134491450,5ptp4l0-21swapper/309:30:143
134491450,4ptp4l15830-21apt-get10:25:113
46198440,9rtkit-daemon0-21swapper/010:23:180
134491440,9ptp4l0-21swapper/308:05:513
134491440,9ptp4l0-21swapper/307:41:093
134491440,4ptp4l31429-21ls12:05:280
134491440,3ptp4l0-21swapper/011:00:520
134491440,3ptp4l0-21swapper/008:01:280
134491440,3ptp4l0-21swapper/008:01:280
134491440,3ptp4l0-21swapper/007:30:410
134491440,12ptp4l0-21swapper/307:35:183
134491440,10ptp4l41-21ksoftirqd/312:39:293
134491440,10ptp4l0-21swapper/311:44:143
134691430,11getstats0-21swapper/009:05:350
134491430,9ptp4l0-21swapper/311:14:483
134491430,5ptp4l22690-21irqstats07:10:210
134491430,4ptp4l22802-21apt-get10:40:110
134491430,4ptp4l11214-21apt-get10:15:110
134691420,18getstats0-21swapper/008:54:270
134491420,9ptp4l0-21swapper/312:27:133
134491420,9ptp4l0-21swapper/312:14:103
134491420,9ptp4l0-21swapper/307:17:383
134491420,5ptp4l26915-21users11:55:300
134491420,5ptp4l0-21swapper/111:55:121
134491420,5ptp4l0-21swapper/008:45:160
134491420,4ptp4l4887-21iostat10:00:180
134491420,4ptp4l32158-21apt-get12:10:110
134491420,4ptp4l2955-21unattended-upgr07:35:360
134491420,3ptp4l2586-21ls08:45:193
2181799414,7cyclictest0-21swapper/310:10:133
134491410,4ptp4l727-21ntp_states09:50:233
134491410,4ptp4l7157-21df12:25:140
134491410,4ptp4l29967-21ps07:25:240
134491410,4ptp4l29470-21df_inode08:35:150
134491410,4ptp4l29068-21diskstats07:25:153
134491410,4ptp4l0-21swapper/311:25:163
134491410,4ptp4l0-21swapper/307:54:593
134491410,3ptp4l5994-21apt-get08:55:030
2181499402,2cyclictest121rcu_preempt09:55:110
134491400,7ptp4l9-21ksoftirqd/011:44:480
134491400,5ptp4l28805-21python09:40:270
134491400,5ptp4l25078-21taskset10:45:063
134491400,5ptp4l0-21swapper/312:00:163
134491400,5ptp4l0-21swapper/007:50:170
134491400,4ptp4l24702-21iostat07:15:150
134491400,4ptp4l14419-21irqstats09:10:180
134491400,4ptp4l0-21swapper/311:51:243
134491400,4ptp4l0-21swapper/311:30:113
134491400,4ptp4l0-21swapper/310:30:153
134491400,4ptp4l0-21swapper/310:00:123
134491400,4ptp4l0-21swapper/309:57:233
134491400,4ptp4l0-21swapper/309:45:243
134491400,4ptp4l0-21swapper/309:42:363
134491400,4ptp4l0-21swapper/309:04:143
134491400,4ptp4l0-21swapper/308:51:543
134491400,4ptp4l0-21swapper/307:23:353
134491400,4ptp4l0-21swapper/010:06:080
134491400,4ptp4l0-21swapper/009:37:330
134491400,4ptp4l0-21swapper/009:20:120
134491400,3ptp4l5768-21ntp_states12:20:240
134491400,3ptp4l4778-21diskstats11:10:150
134491400,3ptp4l0-21swapper/011:38:310
134491390,5ptp4l0-21swapper/009:32:160
134491390,4ptp4l9-21ksoftirqd/009:15:170
134491390,4ptp4l3479-21grep11:05:260
134491390,4ptp4l25230-21/usr/sbin/munin11:55:263
134491390,4ptp4l0-21swapper/312:05:103
134491390,4ptp4l0-21swapper/311:49:443
134491390,4ptp4l0-21swapper/311:22:323
134491390,4ptp4l0-21swapper/311:00:153
134491390,4ptp4l0-21swapper/310:57:593
134491390,4ptp4l0-21swapper/310:57:593
134491390,4ptp4l0-21swapper/310:50:423
134491390,4ptp4l0-21swapper/310:37:103
134491390,4ptp4l0-21swapper/310:20:203
134491390,4ptp4l0-21swapper/309:20:033
134491390,4ptp4l0-21swapper/309:17:363
134491390,4ptp4l0-21swapper/309:10:573
134491390,4ptp4l0-21swapper/309:06:033
134491390,4ptp4l0-21swapper/308:56:073
134491390,4ptp4l0-21swapper/308:41:313
134491390,4ptp4l0-21swapper/308:34:233
134491390,4ptp4l0-21swapper/308:26:273
134491390,4ptp4l0-21swapper/308:17:263
134491390,4ptp4l0-21swapper/307:55:553
134491390,4ptp4l0-21swapper/307:46:353
134491390,4ptp4l0-21swapper/012:15:070
134491390,4ptp4l0-21swapper/011:30:130
134491390,4ptp4l0-21swapper/010:11:070
134491390,4ptp4l0-21swapper/009:02:030
134491390,4ptp4l0-21swapper/008:20:240
134491390,4ptp4l0-21swapper/008:10:200
134491390,4ptp4l0-21swapper/007:55:010
134491390,3ptp4l32004-21/usr/sbin/munin08:40:140
134491390,3ptp4l21493-21memory09:25:213
134491390,3ptp4l16207-21ntp_states08:05:240
134491390,3ptp4l1131-21ls09:50:270
134491390,3ptp4l0-21swapper/312:23:243
134491390,3ptp4l0-21swapper/310:41:513
134491390,3ptp4l0-21swapper/309:39:033
134491390,2ptp4l23249-21df_inode11:50:140
134491380,4ptp4l0-21swapper/312:30:213
134491380,4ptp4l0-21swapper/311:15:153
134491380,4ptp4l0-21swapper/310:18:393
134491380,4ptp4l0-21swapper/308:21:033
134491380,4ptp4l0-21swapper/307:12:333
134491380,4ptp4l0-21swapper/012:31:120
134491380,4ptp4l0-21swapper/008:27:140
134491380,3ptp4l0-21swapper/311:35:113
46198320,26rtkit-daemon1456-21mactelnetd07:07:093
214542203,3sleep20-21swapper/207:09:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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