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2026-08-22 - 22:02
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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 Sat Aug 22, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14953996828,6cyclictest9-21ksoftirqd/012:05:000
14953996633,6cyclictest9-21ksoftirqd/009:30:190
14953996332,5cyclictest9-21ksoftirqd/009:20:180
14953996329,6cyclictest9-21ksoftirqd/009:40:280
14953996325,5cyclictest9-21ksoftirqd/012:10:250
14953996226,7cyclictest9-21ksoftirqd/011:00:160
188032610,4sleep20-21swapper/209:35:202
14953996136,6cyclictest9-21ksoftirqd/007:25:000
14953996132,3cyclictest9-21ksoftirqd/009:25:200
14953996130,5cyclictest9-21ksoftirqd/008:00:180
134491610,15ptp4l0-21swapper/308:40:163
14953996029,5cyclictest9-21ksoftirqd/012:25:200
14953996023,5cyclictest9-21ksoftirqd/009:00:010
14953996023,3cyclictest9-21ksoftirqd/009:55:160
134491600,3ptp4l32335-21diskstats11:15:172
14953995924,5cyclictest9-21ksoftirqd/011:50:160
14953995924,5cyclictest9-21ksoftirqd/007:40:210
14953995922,6cyclictest9-21ksoftirqd/009:50:250
134491590,4ptp4l0-21swapper/307:08:033
14953995827,10cyclictest9-21ksoftirqd/008:45:160
14953995818,4cyclictest9-21ksoftirqd/007:10:150
134491580,4ptp4l0-21swapper/310:20:153
134491580,4ptp4l0-21swapper/007:59:360
1495399578,3cyclictest9-21ksoftirqd/012:35:230
14953995727,4cyclictest9-21ksoftirqd/008:25:000
14953995721,6cyclictest9-21ksoftirqd/008:30:250
134491570,4ptp4l0-21swapper/108:35:201
134491570,3ptp4l0-21swapper/211:10:132
134491570,1ptp4l321ktimersoftd/210:32:192
14953995624,3cyclictest9-21ksoftirqd/007:35:260
14953995621,5cyclictest9-21ksoftirqd/007:15:270
14954995512,28cyclictest22482-21latency_hist12:05:001
1495399558,3cyclictest9-21ksoftirqd/011:05:210
1495399558,3cyclictest9-21ksoftirqd/011:05:210
1495399557,2cyclictest9-21ksoftirqd/012:30:220
1495399554,5cyclictest15461-21lockfile-create10:40:010
14953995523,4cyclictest9-21ksoftirqd/010:10:250
14953995523,4cyclictest9-21ksoftirqd/010:05:150
14953995522,6cyclictest9-21ksoftirqd/011:10:180
134491550,5ptp4l0-21swapper/108:34:301
134491550,4ptp4l0-21swapper/208:34:512
134491550,13ptp4l0-21swapper/207:57:222
1495399548,3cyclictest9-21ksoftirqd/009:00:160
1495399546,6cyclictest8670-21idleruntime-cro11:35:010
14953995420,5cyclictest9-21ksoftirqd/008:10:190
134491540,4ptp4l0-21swapper/312:09:493
134491540,4ptp4l0-21swapper/209:21:312
134491540,4ptp4l0-21swapper/008:17:050
134491540,3ptp4l0-21swapper/308:31:343
134491540,3ptp4l0-21swapper/211:49:082
134491540,3ptp4l0-21swapper/208:52:012
134491540,3ptp4l0-21swapper/011:17:450
134491540,3ptp4l0-21swapper/007:45:560
134491540,2ptp4l0-21swapper/209:18:442
134491540,24ptp4l25-21ksoftirqd/108:21:161
1495399536,5cyclictest24597-21cron11:00:010
14953995323,4cyclictest9-21ksoftirqd/007:25:140
14953995322,5cyclictest9-21ksoftirqd/011:40:210
134491530,4ptp4l0-21swapper/310:10:183
134491530,3ptp4l0-21swapper/107:44:461
134491530,2ptp4l121rcu_preempt12:11:053
1495399528,3cyclictest9-21ksoftirqd/012:05:200
1495399528,3cyclictest9-21ksoftirqd/007:30:130
134491520,6ptp4l33-21ksoftirqd/211:30:152
134491520,4ptp4l0-21swapper/211:21:562
113672520,6sleep30-21swapper/310:30:163
1495399518,3cyclictest9-21ksoftirqd/012:20:200
134491510,3ptp4l0-21swapper/208:08:552
134491510,10ptp4l13565-21memory07:05:191
1495399507,2cyclictest9-21ksoftirqd/011:55:280
1495399507,2cyclictest9-21ksoftirqd/008:05:260
1495399503,3cyclictest0-21swapper/010:45:280
134491500,3ptp4l0-21swapper/110:42:151
134491500,2ptp4l0-21swapper/208:00:432
1495399496,3cyclictest9-21ksoftirqd/007:50:270
1495399495,3cyclictest9-21ksoftirqd/011:25:170
1495399492,8cyclictest0-21swapper/010:25:180
14953994920,6cyclictest9-21ksoftirqd/011:45:240
1495399491,5cyclictest9-21ksoftirqd/010:40:200
134491490,8ptp4l14282-21users07:05:270
134491490,4ptp4l0-21swapper/208:10:552
1495399485,3cyclictest9-21ksoftirqd/008:35:270
1495399485,2cyclictest24843-21df_abs08:40:160
1495399484,6cyclictest0-21swapper/009:50:010
1495399482,6cyclictest0-21swapper/009:40:000
1495399482,5cyclictest9-21ksoftirqd/010:00:260
1495399482,2cyclictest0-21swapper/010:30:160
134491480,5ptp4l0-21swapper/211:35:122
134491480,4ptp4l0-21swapper/209:43:002
134491480,3ptp4l0-21swapper/209:25:242
1495399474,2cyclictest0-21swapper/010:15:160
1495399473,4cyclictest6642-21cpuspeed_turbos10:20:140
1495399471,5cyclictest9-21ksoftirqd/009:05:250
134491470,4ptp4l0-21swapper/310:56:243
134491470,4ptp4l0-21swapper/208:16:122
134491470,4ptp4l0-21swapper/207:34:422
134491470,4ptp4l0-21swapper/107:45:521
134491470,3ptp4l0-21swapper/211:56:002
134491470,3ptp4l0-21swapper/108:07:111
1495399466,3cyclictest9-21ksoftirqd/010:50:280
1495399465,2cyclictest9-21ksoftirqd/008:25:280
1495399465,2cyclictest9-21ksoftirqd/008:25:280
1495399465,2cyclictest27749-21fschecks_time12:15:160
1495399463,2cyclictest0-21swapper/008:50:210
14953994628,8cyclictest9-21ksoftirqd/009:10:130
1495399462,2cyclictest0-21swapper/009:15:140
134491460,4ptp4l0-21swapper/109:42:341
134491460,3ptp4l0-21swapper/210:25:172
1495399453,6cyclictest0-21swapper/011:35:210
1495399452,2cyclictest121rcu_preempt11:20:200
134491450,4ptp4l0-21swapper/309:39:023
134491450,4ptp4l0-21swapper/208:41:382
134491450,3ptp4l0-21swapper/208:25:142
134491450,3ptp4l0-21swapper/208:25:142
134491440,4ptp4l0-21swapper/210:08:512
134491440,4ptp4l0-21swapper/111:07:321
134491440,4ptp4l0-21swapper/111:07:321
134491440,4ptp4l0-21swapper/110:11:431
134491440,4ptp4l0-21swapper/109:30:361
134491440,3ptp4l0-21swapper/111:35:451
134491440,3ptp4l0-21swapper/107:22:411
134491430,5ptp4l0-21swapper/307:55:273
134491430,4ptp4l26976-21apt-get11:05:042
134491430,4ptp4l26976-21apt-get11:05:042
134491430,4ptp4l0-21swapper/208:49:242
134491430,4ptp4l0-21swapper/208:21:112
134491430,4ptp4l0-21swapper/112:11:141
134491430,4ptp4l0-21swapper/108:16:251
134491430,3ptp4l0-21swapper/211:27:292
134491430,3ptp4l0-21swapper/111:58:061
134491430,3ptp4l0-21swapper/107:57:341
134491420,9ptp4l0-21swapper/207:51:452
134491420,5ptp4l19391-21/usr/sbin/munin10:45:292
134491420,4ptp4l6779-21irqstats08:00:191
134491420,4ptp4l29592-21apt-get10:00:131
134491420,4ptp4l14982-21apt-get07:10:121
134491420,4ptp4l1198-21ls12:25:273
134491420,4ptp4l0-21swapper/110:50:201
134491420,3ptp4l24854-21/usr/sbin/munin11:00:202
134491420,3ptp4l15810-21apt-get11:50:123
134491420,3ptp4l0-21swapper/109:49:501
134691410,10getstats0-21swapper/210:23:422
134491410,8ptp4l0-21swapper/212:39:562
134491410,6ptp4l4875-21ps11:25:203
134491410,6ptp4l0-21swapper/109:24:541
134491410,5ptp4l23482-21cat10:55:212
134491410,5ptp4l0-21swapper/308:50:123
134491410,5ptp4l0-21swapper/308:15:263
134491410,5ptp4l0-21swapper/208:55:222
134491410,5ptp4l0-21swapper/109:10:181
134491410,4ptp4l714-21ntp_states11:15:241
134491410,4ptp4l601-21irqstats12:25:201
134491410,4ptp4l32314-21memory07:45:203
134491410,4ptp4l23376-21ntp_states08:35:252
134491410,4ptp4l22102-21df07:25:141
134491410,4ptp4l19850-21apt-get09:40:023
134491410,4ptp4l0-21swapper/311:40:143
134491410,4ptp4l0-21swapper/112:30:281
134491410,4ptp4l0-21swapper/110:15:231
134491410,3ptp4l9873-21ntp_states10:25:243
134491410,3ptp4l8888-21apt-get11:35:123
134491410,3ptp4l7352-21ls08:00:263
134491410,3ptp4l5256-21ntp_states10:15:243
134491410,3ptp4l30540-21meminfo10:00:213
134491410,3ptp4l29687-21apt-get12:20:122
134491410,3ptp4l28215-21ls09:55:212
134491410,3ptp4l0-21swapper/207:42:022
14956994013,3cyclictest1586-21grep07:50:153
134491400,6ptp4l0-21swapper/207:08:262
134491400,5ptp4l31954-21irqrtprio07:45:192
134491400,5ptp4l0-21swapper/311:15:133
134491400,5ptp4l0-21swapper/311:13:103
134491400,5ptp4l0-21swapper/210:14:192
134491400,5ptp4l0-21swapper/112:05:121
134491400,5ptp4l0-21swapper/111:10:141
134491400,5ptp4l0-21swapper/110:20:251
134491400,4ptp4l4301-21apt-get11:25:141
134491400,4ptp4l15649-21/usr/sbin/munin10:40:263
134491400,4ptp4l0-21swapper/311:45:183
134491400,4ptp4l0-21swapper/309:15:123
134491400,4ptp4l0-21swapper/212:25:192
134491400,4ptp4l0-21swapper/212:02:422
134491400,4ptp4l0-21swapper/211:53:312
134491400,4ptp4l0-21swapper/210:17:292
134491400,4ptp4l0-21swapper/209:52:022
134491400,4ptp4l0-21swapper/209:30:162
134491400,4ptp4l0-21swapper/207:28:482
134491400,4ptp4l0-21swapper/112:35:221
134491400,4ptp4l0-21swapper/110:05:231
134491400,4ptp4l0-21swapper/109:50:221
134491400,4ptp4l0-21swapper/109:15:231
134491400,3ptp4l26675-21apt-get08:45:013
134491400,3ptp4l19531-21ls10:45:293
134491400,3ptp4l1951-21/usr/sbin/munin09:00:141
134491400,3ptp4l1559-21df_inode07:50:141
134491400,3ptp4l13339-21apt-get10:35:133
134491400,3ptp4l11206-21apt-get11:40:121
134491400,3ptp4l10524-21apt-get08:10:111
134491400,3ptp4l0-21swapper/309:25:103
134491400,3ptp4l0-21swapper/309:22:093
134491400,3ptp4l0-21swapper/308:38:363
134491390,5ptp4l17151-21taskset08:21:473
134491390,5ptp4l0-21swapper/310:50:213
134491390,5ptp4l0-21swapper/308:59:343
134491390,5ptp4l0-21swapper/307:32:283
134491390,5ptp4l0-21swapper/110:45:171
134491390,4ptp4l5014-21ls09:05:213
134491390,4ptp4l33-21ksoftirqd/210:35:172
134491390,4ptp4l31707-21/usr/sbin/munin08:55:121
134491390,4ptp4l0-21swapper/311:55:293
134491390,4ptp4l0-21swapper/311:05:203
134491390,4ptp4l0-21swapper/311:05:203
134491390,4ptp4l0-21swapper/309:45:123
134491390,4ptp4l0-21swapper/309:32:473
134491390,4ptp4l0-21swapper/309:00:173
134491390,4ptp4l0-21swapper/307:40:223
134491390,4ptp4l0-21swapper/307:35:223
134491390,4ptp4l0-21swapper/307:11:393
134491390,4ptp4l0-21swapper/212:15:212
134491390,4ptp4l0-21swapper/212:12:172
134491390,4ptp4l0-21swapper/212:06:302
134491390,4ptp4l0-21swapper/210:51:522
134491390,4ptp4l0-21swapper/210:40:242
134491390,4ptp4l0-21swapper/210:00:242
134491390,4ptp4l0-21swapper/209:05:242
134491390,4ptp4l0-21swapper/207:20:062
134491390,4ptp4l0-21swapper/207:16:322
134491390,4ptp4l0-21swapper/112:20:201
134491390,4ptp4l0-21swapper/111:20:221
134491390,4ptp4l0-21swapper/111:00:111
134491390,4ptp4l0-21swapper/110:55:581
134491390,4ptp4l0-21swapper/110:30:211
134491390,4ptp4l0-21swapper/109:35:201
134491390,4ptp4l0-21swapper/109:08:061
134491390,4ptp4l0-21swapper/108:42:031
134491390,4ptp4l0-21swapper/108:25:241
134491390,4ptp4l0-21swapper/108:25:241
134491390,4ptp4l0-21swapper/107:35:271
134491390,4ptp4l0-21swapper/107:32:441
134491390,3ptp4l18945-21users07:15:291
134491390,3ptp4l10834-21diskstats08:10:143
134491390,3ptp4l0-21swapper/111:45:281
134491390,2ptp4l23312-21ls07:25:263
134491380,5ptp4l0-21swapper/108:45:441
134491380,4ptp4l3443-21taskset09:01:162
134491380,4ptp4l16031-21df_abs11:50:141
134491380,4ptp4l12654-21wc11:40:262
134491380,4ptp4l0-21swapper/312:35:163
134491380,4ptp4l0-21swapper/312:30:233
134491380,4ptp4l0-21swapper/312:20:433
134491380,4ptp4l0-21swapper/312:15:203
134491380,4ptp4l0-21swapper/311:30:153
134491380,4ptp4l0-21swapper/311:20:273
134491380,4ptp4l0-21swapper/309:53:023
134491380,4ptp4l0-21swapper/309:10:253
134491380,4ptp4l0-21swapper/308:29:063
134491380,4ptp4l0-21swapper/308:29:063
134491380,4ptp4l0-21swapper/308:06:423
134491380,4ptp4l0-21swapper/307:21:333
134491380,4ptp4l0-21swapper/307:15:163
134491380,4ptp4l0-21swapper/209:45:592
134491380,4ptp4l0-21swapper/209:14:052
134491380,4ptp4l0-21swapper/207:35:212
134491380,4ptp4l0-21swapper/207:11:292
134491380,4ptp4l0-21swapper/110:35:271
134491380,4ptp4l0-21swapper/110:25:061
134491380,4ptp4l0-21swapper/109:55:161
134491380,3ptp4l29646-21grep08:50:141
134491380,3ptp4l0-21swapper/311:00:243
134491380,3ptp4l0-21swapper/310:05:173
134491380,3ptp4l0-21swapper/309:55:153
134491380,3ptp4l0-21swapper/212:31:022
134491380,3ptp4l0-21swapper/111:30:211
134491370,4ptp4l0-21swapper/109:29:161
134491370,3ptp4l0-21swapper/312:02:553
134491370,3ptp4l0-21swapper/112:18:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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