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2026-05-19 - 21:49
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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 highest latencies:
System rackdslot1.osadl.org (updated Tue May 19, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
768021720,6sleep02854799cyclictest11:00:170
255421530,6sleep02854799cyclictest10:50:140
28547997626,5cyclictest9-21ksoftirqd/009:40:010
2854999694,63cyclictest0-21swapper/211:45:292
134491620,4ptp4l11218-21meminfo07:40:180
134491600,4ptp4l0-21swapper/112:15:171
134491600,3ptp4l29364-21df09:30:140
134491600,3ptp4l29364-21df09:30:140
134491600,2ptp4l30010-21ssh07:10:273
134491600,16ptp4l0-21swapper/308:35:263
134491590,4ptp4l0-21swapper/310:49:193
134491590,4ptp4l0-21swapper/209:23:162
134491590,3ptp4l0-21swapper/108:43:321
28547995828,4cyclictest9-21ksoftirqd/007:39:590
28547995828,3cyclictest9-21ksoftirqd/007:24:590
134491580,5ptp4l0-21swapper/007:55:020
134491580,4ptp4l0-21swapper/012:26:040
134491580,3ptp4l0-21swapper/211:24:432
134491570,4ptp4l0-21swapper/107:43:021
134491570,4ptp4l0-21swapper/011:52:020
134491570,3ptp4l4368-21processes07:25:263
134491570,3ptp4l0-21swapper/211:18:262
134491570,3ptp4l0-21swapper/110:39:151
134491570,3ptp4l0-21swapper/012:20:270
134491570,3ptp4l0-21swapper/011:41:250
73282560,5sleep00-21swapper/009:50:240
28547995629,6cyclictest9-21ksoftirqd/010:20:000
134491560,6ptp4l0-21swapper/107:07:561
134491560,4ptp4l0-21swapper/011:09:250
134491560,3ptp4l0-21swapper/111:06:561
134491560,16ptp4l0-21swapper/110:46:421
87972550,4sleep30-21swapper/312:10:293
134491550,4ptp4l0-21swapper/311:55:523
28547995425,3cyclictest9-21ksoftirqd/010:00:180
28547995424,5cyclictest9-21ksoftirqd/008:11:270
28547995424,3cyclictest9-21ksoftirqd/007:47:390
28547995424,3cyclictest9-21ksoftirqd/007:47:390
28547995423,4cyclictest9-21ksoftirqd/008:50:260
134491540,4ptp4l0-21swapper/108:13:531
28547995316,5cyclictest9-21ksoftirqd/011:00:000
134491530,4ptp4l0-21swapper/311:19:203
134491530,4ptp4l0-21swapper/012:36:520
134491530,3ptp4l0-21swapper/011:16:470
28547995217,4cyclictest9-21ksoftirqd/010:25:250
134491520,4ptp4l0-21swapper/012:15:460
134491520,3ptp4l0-21swapper/012:10:230
28547995120,5cyclictest9-21ksoftirqd/009:25:270
134491510,4ptp4l0-21swapper/307:55:123
134491510,4ptp4l0-21swapper/107:56:341
134491510,3ptp4l0-21swapper/112:35:271
134491510,3ptp4l0-21swapper/012:04:510
28547995025,7cyclictest9-21ksoftirqd/010:41:510
28547995022,7cyclictest9-21ksoftirqd/007:27:020
28547995019,3cyclictest9-21ksoftirqd/007:10:180
28547995018,3cyclictest9-21ksoftirqd/010:10:170
28547995013,7cyclictest9-21ksoftirqd/008:25:250
134491500,8ptp4l0-21swapper/307:35:013
134491500,5ptp4l0-21swapper/207:05:322
134491500,4ptp4l0-21swapper/310:50:333
28547994919,3cyclictest9-21ksoftirqd/008:17:450
28547994917,3cyclictest9-21ksoftirqd/008:31:410
28547994917,3cyclictest9-21ksoftirqd/007:19:080
134491490,4ptp4l0-21swapper/111:57:071
134491490,3ptp4l0-21swapper/109:05:501
134491490,3ptp4l0-21swapper/011:59:440
134491490,3ptp4l0-21swapper/010:49:270
28547994820,7cyclictest9-21ksoftirqd/011:39:030
28547994814,5cyclictest9-21ksoftirqd/011:25:140
28547994813,6cyclictest9-21ksoftirqd/009:55:200
28547994811,6cyclictest9-21ksoftirqd/009:15:180
134491480,5ptp4l0-21swapper/307:05:483
134491480,4ptp4l0-21swapper/009:10:160
134491480,3ptp4l0-21swapper/110:22:281
134491480,3ptp4l0-21swapper/108:52:001
134491480,3ptp4l0-21swapper/108:15:081
134491480,3ptp4l0-21swapper/011:21:490
2854799473,3cyclictest121rcu_preempt08:48:040
28547994721,6cyclictest9-21ksoftirqd/007:32:230
28547994720,6cyclictest9-21ksoftirqd/007:51:360
28547994719,7cyclictest9-21ksoftirqd/008:22:460
28547994714,6cyclictest9-21ksoftirqd/009:45:010
134491470,3ptp4l0-21swapper/008:38:180
28547994620,7cyclictest9-21ksoftirqd/010:35:000
28547994617,3cyclictest9-21ksoftirqd/008:05:000
28547994614,6cyclictest9-21ksoftirqd/009:05:170
134491460,8ptp4l0-21swapper/310:11:023
134491460,4ptp4l0-21swapper/009:45:120
134491460,3ptp4l0-21swapper/310:05:043
2854799455,3cyclictest9-21ksoftirqd/008:55:270
28547994519,6cyclictest9-21ksoftirqd/010:32:480
28547994519,4cyclictest9-21ksoftirqd/010:20:210
28547994513,6cyclictest9-21ksoftirqd/008:40:140
134491450,9ptp4l0-21swapper/209:16:002
134491450,4ptp4l0-21swapper/310:21:523
134491450,10ptp4l0-21swapper/209:29:572
134491450,10ptp4l0-21swapper/208:30:322
28547994411,7cyclictest9-21ksoftirqd/011:45:170
134491440,9ptp4l0-21swapper/207:53:242
134491440,5ptp4l0-21swapper/307:50:133
134491440,5ptp4l0-21swapper/208:50:122
134491440,4ptp4l0-21swapper/112:33:431
134491440,3ptp4l2597-21apt-get12:00:122
134491440,3ptp4l10094-21ls09:55:291
134491440,3ptp4l0-21swapper/108:07:581
134491440,3ptp4l0-21swapper/107:35:081
134491440,10ptp4l0-21swapper/010:06:060
28550994338,3cyclictest41-21ksoftirqd/309:20:003
28548994338,3cyclictest25-21ksoftirqd/108:39:591
28547994337,3cyclictest9-21ksoftirqd/012:05:260
134491430,9ptp4l0-21swapper/211:52:442
134491430,9ptp4l0-21swapper/210:22:302
134491430,9ptp4l0-21swapper/209:14:452
134491430,9ptp4l0-21swapper/208:28:512
134491430,9ptp4l0-21swapper/208:17:402
134491430,6ptp4l241ktimersoftd/108:00:311
134491430,5ptp4l2427-21apt-get10:50:132
134491430,5ptp4l0-21swapper/209:05:122
134491430,4ptp4l0-21swapper/311:52:053
134491430,4ptp4l0-21swapper/309:03:233
134491430,4ptp4l0-21swapper/112:12:401
134491430,3ptp4l27643-21apt-get10:35:132
134491430,3ptp4l0-21swapper/009:00:170
134491430,10ptp4l0-21swapper/208:39:592
134491430,10ptp4l0-21swapper/207:31:592
28550994236,3cyclictest41-21ksoftirqd/308:59:593
2854799428,4cyclictest9-21ksoftirqd/009:20:250
28547994236,3cyclictest9-21ksoftirqd/008:05:180
134491420,9ptp4l0-21swapper/212:36:462
134491420,5ptp4l0-21swapper/310:55:283
134491420,5ptp4l0-21swapper/012:30:270
134491420,4ptp4l8370-21ntp_states11:00:242
134491420,4ptp4l4266-21users12:00:291
134491420,4ptp4l30165-21meminfo08:20:202
134491420,4ptp4l28600-21iostat_ios11:45:171
134491420,4ptp4l26030-21df_inode11:40:151
134491420,4ptp4l19610-21irqstats11:25:201
134491420,4ptp4l19276-21ntp_states10:15:221
134491420,4ptp4l17520-21ntp_states12:30:243
134491420,3ptp4l24052-21apt-get08:07:313
28548994136,3cyclictest25-21ksoftirqd/109:50:001
28547994136,2cyclictest9-21ksoftirqd/011:30:170
134491410,7ptp4l16173-21latency09:00:201
134491410,5ptp4l0-21swapper/311:47:393
134491410,5ptp4l0-21swapper/209:00:252
134491410,4ptp4l30264-21ntp_states09:30:232
134491410,4ptp4l30264-21ntp_states09:30:232
134491410,4ptp4l22609-21hddtemp_smartct09:15:161
134491410,4ptp4l20320-21tune2fs08:00:152
134491410,4ptp4l1672-21diskstats09:40:131
134491410,4ptp4l12418-21iostat11:10:191
134491410,4ptp4l11126-21ls11:05:303
134491410,4ptp4l0-21swapper/311:00:103
134491410,4ptp4l0-21swapper/212:14:052
134491410,4ptp4l0-21swapper/212:08:032
134491410,4ptp4l0-21swapper/210:55:192
134491410,4ptp4l0-21swapper/210:40:242
134491410,4ptp4l0-21swapper/210:10:182
134491410,4ptp4l0-21swapper/208:05:152
134491410,4ptp4l0-21swapper/110:00:241
134491410,4ptp4l0-21swapper/109:31:301
134491410,4ptp4l0-21swapper/109:31:301
134491410,4ptp4l0-21swapper/108:46:241
134491410,4ptp4l0-21swapper/007:07:520
134491410,3ptp4l9559-21apt-get11:05:132
134491410,3ptp4l8377-21apt-get08:45:122
134491410,3ptp4l7467-21df11:00:161
134491410,3ptp4l31823-21diskstats08:25:173
134491410,3ptp4l25079-21users11:35:261
134491410,3ptp4l17590-21apt-get09:05:123
134491410,3ptp4l10676-21apt-get08:50:123
28550994035,3cyclictest41-21ksoftirqd/310:00:003
28548994035,3cyclictest25-21ksoftirqd/111:00:011
2854799401,3cyclictest121rcu_preempt11:10:160
134491400,5ptp4l29791-21ps08:20:193
134491400,5ptp4l23985-21ps10:25:242
134491400,5ptp4l20221-21latency_hist10:20:002
134491400,5ptp4l0-21swapper/308:40:223
134491400,5ptp4l0-21swapper/207:45:232
134491400,5ptp4l0-21swapper/207:45:232
134491400,4ptp4l7959-21apt-get07:35:112
134491400,4ptp4l6290-21df08:40:142
134491400,4ptp4l21904-21irqstats11:30:181
134491400,4ptp4l17126-21/usr/sbin/munin10:10:231
134491400,4ptp4l15269-21ntp_states11:15:251
134491400,4ptp4l12018-21df12:20:131
134491400,4ptp4l0-21swapper/310:35:123
134491400,4ptp4l0-21swapper/310:25:293
134491400,4ptp4l0-21swapper/309:45:503
134491400,4ptp4l0-21swapper/309:20:203
134491400,4ptp4l0-21swapper/309:10:143
134491400,4ptp4l0-21swapper/308:30:153
134491400,4ptp4l0-21swapper/308:16:283
134491400,4ptp4l0-21swapper/308:12:173
134491400,4ptp4l0-21swapper/308:00:283
134491400,4ptp4l0-21swapper/212:19:422
134491400,4ptp4l0-21swapper/211:43:402
134491400,4ptp4l0-21swapper/211:32:122
134491400,4ptp4l0-21swapper/210:35:002
134491400,4ptp4l0-21swapper/209:47:502
134491400,4ptp4l0-21swapper/209:37:592
134491400,4ptp4l0-21swapper/207:40:162
134491400,4ptp4l0-21swapper/207:19:512
134491400,4ptp4l0-21swapper/112:27:191
134491400,4ptp4l0-21swapper/110:50:201
134491400,4ptp4l0-21swapper/109:25:141
134491400,4ptp4l0-21swapper/108:58:051
134491400,4ptp4l0-21swapper/107:48:051
134491400,4ptp4l0-21swapper/107:48:051
134491400,3ptp4l6015-21apt-get09:50:122
134491400,3ptp4l4894-21apt-get12:05:111
134491400,3ptp4l25335-21df10:30:121
134491400,3ptp4l23355-21apt-get11:35:112
134491400,3ptp4l11796-21/usr/sbin/munin12:20:202
134491400,3ptp4l0-21swapper/310:40:213
134491400,2ptp4l4170-21ls07:25:231
2854999391,35cyclictest0-21swapper/207:25:122
28548993934,3cyclictest25-21ksoftirqd/109:40:001
134491390,5ptp4l2855099cyclictest11:26:063
134491390,5ptp4l0-21swapper/311:34:243
134491390,5ptp4l0-21swapper/311:20:343
134491390,5ptp4l0-21swapper/107:10:171
134491390,4ptp4l1954-21phc2sys07:20:251
134491390,4ptp4l0-21swapper/312:35:193
134491390,4ptp4l0-21swapper/311:40:593
134491390,4ptp4l0-21swapper/311:35:083
134491390,4ptp4l0-21swapper/311:10:403
134491390,4ptp4l0-21swapper/310:31:563
134491390,4ptp4l0-21swapper/309:50:273
134491390,4ptp4l0-21swapper/309:30:203
134491390,4ptp4l0-21swapper/309:30:203
134491390,4ptp4l0-21swapper/308:46:573
134491390,4ptp4l0-21swapper/307:43:053
134491390,4ptp4l0-21swapper/307:32:363
134491390,4ptp4l0-21swapper/307:15:133
134491390,4ptp4l0-21swapper/212:32:342
134491390,4ptp4l0-21swapper/212:26:052
134491390,4ptp4l0-21swapper/211:27:492
134491390,4ptp4l0-21swapper/211:13:042
134491390,4ptp4l0-21swapper/210:08:322
134491390,4ptp4l0-21swapper/210:02:282
134491390,4ptp4l0-21swapper/208:55:172
134491390,4ptp4l0-21swapper/208:10:102
134491390,4ptp4l0-21swapper/207:58:342
134491390,4ptp4l0-21swapper/207:20:042
134491390,4ptp4l0-21swapper/207:10:552
134491390,4ptp4l0-21swapper/111:50:131
134491390,4ptp4l0-21swapper/111:20:141
134491390,4ptp4l0-21swapper/110:40:241
134491390,4ptp4l0-21swapper/110:28:531
134491390,4ptp4l0-21swapper/110:05:171
134491390,4ptp4l0-21swapper/108:25:291
134491390,4ptp4l0-21swapper/107:18:441
134491390,3ptp4l5445-21apt-get07:30:121
134491390,3ptp4l0-21swapper/211:55:442
134491390,3ptp4l0-21swapper/210:49:472
134491380,5ptp4l0-21swapper/209:41:162
134491380,4ptp4l0-21swapper/310:15:173
134491380,4ptp4l0-21swapper/310:00:043
134491380,4ptp4l0-21swapper/309:43:503
134491380,4ptp4l0-21swapper/307:47:313
134491380,4ptp4l0-21swapper/307:47:313
134491380,4ptp4l0-21swapper/209:56:042
134491380,4ptp4l0-21swapper/108:20:151
134491380,3ptp4l6317-21df_inode09:50:141
134491380,3ptp4l31772-21fschecks_count09:35:143
134491380,3ptp4l21022-21/usr/sbin/munin09:10:231
134491380,3ptp4l0-21swapper/109:20:111
134491370,3ptp4l15444-21irqrtprio07:50:191
134491370,3ptp4l0-21swapper/312:27:353
134491370,3ptp4l0-21swapper/312:21:333
134491370,3ptp4l0-21swapper/108:30:131
28550993631,3cyclictest41-21ksoftirqd/312:00:193
134491360,4ptp4l28120-21find09:25:243
134491360,4ptp4l0-21swapper/307:22:023
134491360,3ptp4l0-21swapper/312:19:173
28550993530,3cyclictest41-21ksoftirqd/312:06:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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