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2026-06-19 - 19:49
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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 Fri Jun 19, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2344421630,4sleep2826099cyclictest07:40:232
183602700,4sleep10-21swapper/111:00:001
8259996928,10cyclictest25-21ksoftirqd/108:20:191
8259996729,7cyclictest25-21ksoftirqd/107:55:171
134491660,4ptp4l0-21swapper/009:09:530
8259996428,4cyclictest25-21ksoftirqd/111:45:131
8259996424,3cyclictest25-21ksoftirqd/111:40:231
8259996331,6cyclictest25-21ksoftirqd/109:49:591
8259996331,4cyclictest25-21ksoftirqd/110:15:161
8259996329,4cyclictest25-21ksoftirqd/107:20:251
8259996328,7cyclictest25-21ksoftirqd/111:20:001
8259996228,9cyclictest25-21ksoftirqd/112:10:181
8259996226,9cyclictest25-21ksoftirqd/107:50:161
134491620,3ptp4l25739-21ntp_states07:45:233
8259996122,10cyclictest25-21ksoftirqd/107:30:241
8259996028,8cyclictest25-21ksoftirqd/110:45:181
8259996028,6cyclictest25-21ksoftirqd/110:00:191
8259996026,4cyclictest25-21ksoftirqd/109:10:161
134491600,3ptp4l15616-21df07:25:110
134491600,3ptp4l0-21swapper/109:20:051
134491590,4ptp4l0-21swapper/212:05:372
8259995824,8cyclictest25-21ksoftirqd/111:00:261
8259995824,4cyclictest25-21ksoftirqd/107:15:001
134491580,4ptp4l0-21swapper/011:29:220
134491580,3ptp4l0-21swapper/210:51:212
134491580,3ptp4l0-21swapper/108:26:081
134491580,3ptp4l0-21swapper/010:40:230
8259995727,8cyclictest25-21ksoftirqd/108:55:131
8259995724,4cyclictest25-21ksoftirqd/110:20:271
134491570,3ptp4l0-21swapper/210:20:042
8259995624,7cyclictest25-21ksoftirqd/111:05:011
134491560,4ptp4l0-21swapper/209:41:592
134491560,3ptp4l0-21swapper/011:10:170
8259995522,7cyclictest25-21ksoftirqd/111:25:251
8259995516,8cyclictest25-21ksoftirqd/112:00:171
134491550,4ptp4l0-21swapper/007:20:450
134491550,12ptp4l0-21swapper/210:19:252
825999544,9cyclictest25-21ksoftirqd/111:55:161
825999544,9cyclictest25-21ksoftirqd/111:55:161
8259995423,8cyclictest25-21ksoftirqd/107:10:271
8259995418,6cyclictest25-21ksoftirqd/112:30:271
8259995416,6cyclictest25-21ksoftirqd/112:27:161
134491540,3ptp4l0-21swapper/111:32:221
134491540,3ptp4l0-21swapper/009:30:310
134491540,3ptp4l0-21swapper/008:30:270
134491540,3ptp4l0-21swapper/008:30:270
134491530,4ptp4l0-21swapper/310:42:343
134491530,4ptp4l0-21swapper/208:53:542
134491530,4ptp4l0-21swapper/011:31:430
825999527,4cyclictest28021-21/usr/sbin/munin11:20:191
825999525,8cyclictest25-21ksoftirqd/109:55:161
825999525,7cyclictest25-21ksoftirqd/112:05:141
825999523,6cyclictest25-21ksoftirqd/110:40:001
8259995217,7cyclictest25-21ksoftirqd/110:10:151
134491520,4ptp4l0-21swapper/312:21:273
134491520,4ptp4l0-21swapper/311:15:453
134491520,4ptp4l0-21swapper/310:16:353
134491520,4ptp4l0-21swapper/208:00:102
134491520,4ptp4l0-21swapper/109:30:221
134491520,4ptp4l0-21swapper/011:39:510
134491520,4ptp4l0-21swapper/010:00:170
825999506,3cyclictest25-21ksoftirqd/109:40:131
825999505,7cyclictest25-21ksoftirqd/112:20:261
825999503,7cyclictest25-21ksoftirqd/108:45:261
825999500,6cyclictest25-21ksoftirqd/109:15:131
134491500,5ptp4l0-21swapper/309:51:103
134491500,4ptp4l0-21swapper/212:20:142
134491500,3ptp4l0-21swapper/110:27:581
134491500,11ptp4l0-21swapper/211:00:222
134491500,10ptp4l0-21swapper/209:38:072
825999496,7cyclictest25-21ksoftirqd/107:25:111
825999493,3cyclictest121rcu_preempt08:10:111
825999490,6cyclictest24494-21awk11:10:211
134491490,9ptp4l7744-21lsb_release07:07:170
134491490,4ptp4l0-21swapper/210:42:122
134491490,4ptp4l0-21swapper/112:18:421
134491490,4ptp4l0-21swapper/011:57:500
134491490,4ptp4l0-21swapper/011:57:500
134491490,4ptp4l0-21swapper/008:51:430
134491490,3ptp4l0-21swapper/210:32:312
134491490,3ptp4l0-21swapper/111:35:371
825999486,5cyclictest25-21ksoftirqd/108:00:121
825999485,6cyclictest25-21ksoftirqd/107:35:251
825999483,8cyclictest25-21ksoftirqd/110:30:271
825999483,8cyclictest25-21ksoftirqd/109:05:141
825999482,7cyclictest25-21ksoftirqd/110:10:001
825999481,7cyclictest25-21ksoftirqd/109:40:001
134491480,8ptp4l7623-21cat07:07:131
134491480,4ptp4l0-21swapper/311:04:403
134491480,4ptp4l0-21swapper/309:25:203
134491480,4ptp4l0-21swapper/010:49:080
134491480,4ptp4l0-21swapper/009:22:410
134491480,3ptp4l0-21swapper/309:07:043
134491480,3ptp4l0-21swapper/307:44:403
134491480,3ptp4l0-21swapper/012:31:040
825999476,5cyclictest25-21ksoftirqd/111:50:281
8259994737,3cyclictest25-21ksoftirqd/110:45:001
8259994737,3cyclictest25-21ksoftirqd/109:50:251
825999473,3cyclictest121rcu_preempt09:25:151
134491470,5ptp4l0-21swapper/309:20:143
134491470,4ptp4l0-21swapper/310:11:423
134491470,4ptp4l0-21swapper/308:18:273
134491470,3ptp4l3985-21df08:10:142
134491470,3ptp4l0-21swapper/310:04:143
8259994642,2cyclictest241ktimersoftd/108:05:131
825999463,7cyclictest25-21ksoftirqd/108:40:131
8259994629,9cyclictest25-21ksoftirqd/110:50:151
825999462,7cyclictest25-21ksoftirqd/107:40:271
825999462,3cyclictest121rcu_preempt07:45:081
825999460,6cyclictest25-21ksoftirqd/112:35:141
134491460,4ptp4l826199cyclictest09:17:243
134491460,4ptp4l0-21swapper/011:15:430
134491460,4ptp4l0-21swapper/009:58:590
134491460,2ptp4l0-21swapper/308:49:103
825999456,7cyclictest25-21ksoftirqd/108:50:131
134491450,7ptp4l101ktimersoftd/008:25:540
134491450,5ptp4l0-21swapper/309:30:123
134491450,4ptp4l32273-21apt-get10:20:140
134491450,11ptp4l0-21swapper/210:00:152
825999440,6cyclictest25-21ksoftirqd/108:30:311
825999440,6cyclictest25-21ksoftirqd/108:30:311
134491440,4ptp4l17720-21ls09:45:280
134491440,4ptp4l11497-21apt-get10:45:122
134491440,4ptp4l0-21swapper/210:59:112
134491440,10ptp4l0-21swapper/212:25:372
825999435,7cyclictest25-21ksoftirqd/108:35:241
825999430,7cyclictest25-21ksoftirqd/108:15:111
134491430,9ptp4l0-21swapper/212:38:482
134491430,9ptp4l0-21swapper/211:27:472
134491430,9ptp4l0-21swapper/207:47:062
134491430,9ptp4l0-21swapper/207:34:102
134491430,5ptp4l0-21swapper/209:10:222
134491430,5ptp4l0-21swapper/208:40:132
134491430,4ptp4l11179-21apt-get08:25:123
134491430,4ptp4l0-21swapper/311:10:103
134491430,3ptp4l0-21swapper/209:21:062
134491430,3ptp4l0-21swapper/009:14:260
825899420,2cyclictest121rcu_preempt11:00:010
134491420,9ptp4l0-21swapper/212:18:572
134491420,9ptp4l0-21swapper/211:46:512
134491420,4ptp4l13691-21apt-get08:30:172
134491420,4ptp4l13691-21apt-get08:30:172
134491420,4ptp4l10195-21memory09:30:212
134491420,4ptp4l0-21swapper/308:20:533
134491420,4ptp4l0-21swapper/011:42:030
134491420,3ptp4l2318-21gnome-shell12:11:590
134491420,3ptp4l0-21swapper/211:13:202
134491420,3ptp4l0-21swapper/012:05:300
825999411,9cyclictest25-21ksoftirqd/109:05:001
134491410,9ptp4l0-21swapper/008:10:480
134491410,8ptp4l0-21swapper/211:50:482
134491410,7ptp4l0-21swapper/209:17:272
134491410,5ptp4l31622-21users10:15:280
134491410,5ptp4l0-21swapper/311:55:233
134491410,5ptp4l0-21swapper/311:55:233
134491410,4ptp4l26666-21meminfo11:15:212
134491410,4ptp4l24617-21apt-get07:45:130
134491410,4ptp4l0-21swapper/308:30:163
134491410,4ptp4l0-21swapper/308:30:163
134491410,3ptp4l32628-21apt-get11:30:103
134491410,3ptp4l2318-21gnome-shell12:15:590
134491410,3ptp4l18451-21apt-get09:50:132
134491410,3ptp4l13062-21ls10:45:263
8258994035,3cyclictest9-21ksoftirqd/009:55:000
134491400,9ptp4l0-21swapper/209:04:412
134491400,8ptp4l0-21swapper/209:57:012
134491400,8ptp4l0-21swapper/207:18:382
134491400,5ptp4l32590-21/usr/sbin/munin10:20:163
134491400,5ptp4l0-21swapper/211:56:132
134491400,5ptp4l0-21swapper/211:56:132
134491400,5ptp4l0-21swapper/008:15:140
134491400,4ptp4l7441-21iostat10:35:170
134491400,4ptp4l7244-21df_inode09:25:152
134491400,4ptp4l32638-21ntp_states08:00:220
134491400,4ptp4l29515-21diskstats07:55:140
134491400,4ptp4l18304-21apt-get08:40:133
134491400,4ptp4l0-21swapper/308:35:203
134491400,4ptp4l0-21swapper/307:50:283
134491400,4ptp4l0-21swapper/208:38:402
134491400,4ptp4l0-21swapper/010:30:290
134491400,4ptp4l0-21swapper/010:26:370
134491400,4ptp4l0-21swapper/009:15:190
134491400,4ptp4l0-21swapper/008:05:140
134491400,4ptp4l0-21swapper/007:54:090
134491400,4ptp4l0-21swapper/007:39:320
134491400,4ptp4l0-21swapper/007:19:430
134491400,3ptp4l8291-21apt-get07:10:130
134491400,3ptp4l31439-21ls09:05:282
134491400,3ptp4l22627-21ls11:05:260
134491400,3ptp4l14355-21iostat10:50:170
134491400,3ptp4l1301-21snmpd12:12:443
134491400,3ptp4l12488-21meminfo09:35:193
134491390,5ptp4l0-21swapper/312:25:483
134491390,5ptp4l0-21swapper/211:30:122
134491390,5ptp4l0-21swapper/208:27:022
134491390,4ptp4l2318-21gnome-shell12:20:590
134491390,4ptp4l0-21swapper/311:05:233
134491390,4ptp4l0-21swapper/310:05:243
134491390,4ptp4l0-21swapper/309:45:003
134491390,4ptp4l0-21swapper/309:00:303
134491390,4ptp4l0-21swapper/211:40:292
134491390,4ptp4l0-21swapper/211:39:112
134491390,4ptp4l0-21swapper/211:22:242
134491390,4ptp4l0-21swapper/210:35:252
134491390,4ptp4l0-21swapper/210:05:152
134491390,4ptp4l0-21swapper/208:59:502
134491390,4ptp4l0-21swapper/208:20:302
134491390,4ptp4l0-21swapper/207:59:182
134491390,4ptp4l0-21swapper/207:10:062
134491390,4ptp4l0-21swapper/012:37:360
134491390,4ptp4l0-21swapper/011:50:140
134491390,4ptp4l0-21swapper/011:00:250
134491390,4ptp4l0-21swapper/010:06:080
134491390,4ptp4l0-21swapper/009:35:270
134491390,4ptp4l0-21swapper/009:03:140
134491390,4ptp4l0-21swapper/008:56:110
134491390,4ptp4l0-21swapper/008:46:000
134491390,4ptp4l0-21swapper/008:20:430
134491390,4ptp4l0-21swapper/007:40:530
134491390,3ptp4l26244-21iostat_ios12:25:170
134491390,3ptp4l18277-21iostat07:30:180
134491390,3ptp4l16152-21apt-get09:45:113
134491390,3ptp4l0-21swapper/311:45:143
134491390,3ptp4l0-21swapper/010:13:090
134491380,5ptp4l23467-21ps08:50:183
134491380,5ptp4l0-21swapper/311:40:463
134491380,5ptp4l0-21swapper/311:25:103
134491380,5ptp4l0-21swapper/208:46:192
134491380,5ptp4l0-21swapper/207:51:392
134491380,4ptp4l0-21swapper/312:31:023
134491380,4ptp4l0-21swapper/312:19:263
134491380,4ptp4l0-21swapper/312:05:463
134491380,4ptp4l0-21swapper/311:20:163
134491380,4ptp4l0-21swapper/310:35:233
134491380,4ptp4l0-21swapper/310:30:193
134491380,4ptp4l0-21swapper/310:28:583
134491380,4ptp4l0-21swapper/309:55:233
134491380,4ptp4l0-21swapper/309:13:363
134491380,4ptp4l0-21swapper/308:10:143
134491380,4ptp4l0-21swapper/308:07:033
134491380,4ptp4l0-21swapper/308:04:513
134491380,4ptp4l0-21swapper/307:35:293
134491380,4ptp4l0-21swapper/212:31:052
134491380,4ptp4l0-21swapper/212:10:202
134491380,4ptp4l0-21swapper/212:00:102
134491380,4ptp4l0-21swapper/210:25:232
134491380,4ptp4l0-21swapper/210:14:122
134491380,4ptp4l0-21swapper/208:15:122
134491380,4ptp4l0-21swapper/208:07:282
134491380,4ptp4l0-21swapper/012:00:120
134491380,4ptp4l0-21swapper/011:46:080
134491380,4ptp4l0-21swapper/009:40:380
134491380,4ptp4l0-21swapper/008:43:180
134491380,4ptp4l0-21swapper/008:35:350
134491380,3ptp4l0-21swapper/310:52:583
134491380,3ptp4l0-21swapper/207:25:242
134491380,3ptp4l0-21swapper/207:22:382
134491380,3ptp4l0-21swapper/011:20:230
134491380,3ptp4l0-21swapper/009:25:040
134491370,5ptp4l0-21swapper/307:30:113
134491370,4ptp4l1317-21runrttasks11:05:012
134491370,4ptp4l0-21swapper/312:01:543
134491370,4ptp4l0-21swapper/311:36:443
134491370,4ptp4l0-21swapper/310:55:203
134491370,4ptp4l0-21swapper/308:55:423
134491370,4ptp4l0-21swapper/207:35:122
134491370,3ptp4l0-21swapper/311:52:453
134491370,3ptp4l0-21swapper/307:59:533
134491370,3ptp4l0-21swapper/209:47:072
134491360,4ptp4l0-21swapper/312:36:163
134491360,3ptp4l0-21swapper/307:25:143
134491340,4ptp4l0-21swapper/307:20:433
8261993026,2cyclictest137891phc2sys07:15:193
8261992419,3cyclictest41-21ksoftirqd/307:12:123
70872172,9sleep27227-21ls07:05:262
65042154,6sleep30-21swapper/307:05:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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