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2026-08-20 - 19:04
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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 Aug 20, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1689721690,5sleep11418099cyclictest08:25:111
2250121170,3sleep21418199cyclictest09:45:202
134491750,7ptp4l121rcu_preempt11:05:013
134491750,7ptp4l121rcu_preempt11:05:013
134491680,3ptp4l121rcu_preempt09:50:173
134491680,3ptp4l121rcu_preempt08:50:293
134491620,4ptp4l0-21swapper/210:30:282
134491620,19ptp4l0-21swapper/311:30:263
134691600,5getstats0-21swapper/107:05:041
134491600,3ptp4l0-21swapper/208:35:282
134491590,3ptp4l0-21swapper/210:57:542
134491590,3ptp4l0-21swapper/010:35:300
134491590,2ptp4l9921-21apt-get09:20:123
134491580,4ptp4l0-21swapper/311:20:393
134491580,4ptp4l0-21swapper/207:16:362
134491580,18ptp4l0-21swapper/312:17:293
134491570,4ptp4l0-21swapper/209:52:402
134491570,4ptp4l0-21swapper/010:20:120
134491570,3ptp4l0-21swapper/211:15:072
134491570,3ptp4l0-21swapper/209:02:532
134491570,3ptp4l0-21swapper/207:35:272
134691560,3getstats0-21swapper/311:40:093
134491560,3ptp4l0-21swapper/312:10:303
134491560,3ptp4l0-21swapper/307:50:193
1417999556,7cyclictest0-21swapper/008:55:140
134491550,5ptp4l0-21swapper/312:28:473
134491550,3ptp4l0-21swapper/211:44:402
306032540,5sleep10-21swapper/112:20:241
14181995418,3cyclictest33-21ksoftirqd/210:35:212
1418099546,11cyclictest25551-21chrt08:43:251
1417999544,6cyclictest0-21swapper/012:35:260
1417999544,6cyclictest0-21swapper/012:35:260
134491540,4ptp4l0-21swapper/211:49:502
134491540,4ptp4l0-21swapper/211:27:042
134491540,3ptp4l0-21swapper/212:25:212
134491540,3ptp4l0-21swapper/012:10:130
134491540,12ptp4l0-21swapper/307:30:443
134491530,5ptp4l0-21swapper/007:05:050
134491530,4ptp4l0-21swapper/310:58:233
134491530,4ptp4l0-21swapper/308:29:183
134491530,4ptp4l0-21swapper/210:17:502
134491530,4ptp4l0-21swapper/210:07:462
134491530,3ptp4l0-21swapper/209:44:522
134491530,3ptp4l0-21swapper/208:51:142
134491530,2ptp4l0-21swapper/309:42:063
1418099526,12cyclictest30481-21taskset11:11:011
1418099521,12cyclictest4331-21cat09:05:281
134491520,4ptp4l0-21swapper/210:53:302
134491520,10ptp4l0-21swapper/307:58:303
1418099518,7cyclictest0-21swapper/111:35:161
1418099518,10cyclictest21231-21seq10:50:301
1418099512,16cyclictest722-21sendmail-msp11:20:001
1417999515,6cyclictest0-21swapper/007:40:120
134491510,3ptp4l0-21swapper/310:54:433
134491510,3ptp4l0-21swapper/307:37:323
1418099506,11cyclictest19572-21chrt11:58:581
1417999507,6cyclictest9-21ksoftirqd/011:25:240
1417999506,10cyclictest0-21swapper/008:52:060
134491500,3ptp4l0-21swapper/212:07:512
1418199493,3cyclictest121rcu_preempt12:12:062
1418099495,6cyclictest1661-21processes09:00:241
1418099494,10cyclictest0-21swapper/108:46:201
1417999492,6cyclictest0-21swapper/011:15:110
14179994917,6cyclictest9-21ksoftirqd/008:27:590
134491490,4ptp4l0-21swapper/011:02:320
134491490,4ptp4l0-21swapper/011:02:320
134491490,3ptp4l0-21swapper/212:15:342
134491490,3ptp4l0-21swapper/208:46:372
134491490,3ptp4l0-21swapper/208:22:472
1418199483,2cyclictest121rcu_preempt09:39:362
1418099488,6cyclictest0-21swapper/107:32:461
1418099487,6cyclictest0-21swapper/111:50:181
1418099487,12cyclictest25480-21seq09:50:401
1418099486,11cyclictest9565-21taskset10:29:431
1418099486,11cyclictest9565-21taskset10:29:431
1417999485,10cyclictest0-21swapper/010:34:510
1417999484,6cyclictest0-21swapper/010:00:230
1417999481,5cyclictest0-21swapper/009:50:110
134491480,3ptp4l0-21swapper/307:41:463
14181994735,9cyclictest33-21ksoftirqd/209:20:152
1418199472,2cyclictest121rcu_preempt08:56:202
1418099478,5cyclictest25-21ksoftirqd/107:10:231
1417999473,8cyclictest0-21swapper/010:19:210
1417999472,7cyclictest134491ptp4l09:35:240
134491470,5ptp4l2318-21gnome-shell10:05:593
134491470,4ptp4l0-21swapper/212:32:072
134491470,4ptp4l0-21swapper/210:49:432
134491470,4ptp4l0-21swapper/207:26:452
134491470,3ptp4l0-21swapper/210:42:382
1418099468,11cyclictest0-21swapper/107:50:231
1418099467,6cyclictest0-21swapper/107:37:481
1418099467,6cyclictest0-21swapper/107:15:181
1418099466,12cyclictest23572-21runrttasks10:55:591
1418099465,7cyclictest0-21swapper/109:20:261
1418099464,11cyclictest8447-21missed_timers08:05:221
1417999464,6cyclictest0-21swapper/008:35:250
1417999464,6cyclictest0-21swapper/008:10:280
1417999463,6cyclictest9-21ksoftirqd/008:05:210
1417999462,6cyclictest0-21swapper/012:19:570
1417999461,7cyclictest101ktimersoftd/011:10:190
1417999461,6cyclictest0-21swapper/009:21:550
134491460,9ptp4l9-21ksoftirqd/008:45:190
134491460,9ptp4l0-21swapper/308:57:063
134491460,4ptp4l0-21swapper/308:47:543
134491460,3ptp4l0-21swapper/209:14:132
1418199452,2cyclictest121rcu_preempt12:21:322
1418099457,6cyclictest0-21swapper/107:25:161
1418099456,6cyclictest0-21swapper/111:25:261
1418099452,17cyclictest15256-21sed09:30:191
14180994511,5cyclictest25-21ksoftirqd/109:10:201
1417999454,7cyclictest22906-21idleruntime12:05:180
1417999453,8cyclictest0-21swapper/011:31:530
1417999453,6cyclictest9-21ksoftirqd/007:20:160
1417999452,6cyclictest0-21swapper/008:40:270
1417999452,5cyclictest9-21ksoftirqd/010:06:550
1417999451,6cyclictest0-21swapper/010:48:230
134491450,9ptp4l0-21swapper/011:54:400
134491450,4ptp4l23475-21apt-get07:30:112
134491450,4ptp4l0-21swapper/208:01:242
1418199441,2cyclictest121rcu_preempt10:27:302
1418199441,2cyclictest121rcu_preempt10:27:302
1418199440,3cyclictest121rcu_preempt11:38:112
1417999443,5cyclictest0-21swapper/011:20:250
1417999442,6cyclictest0-21swapper/009:15:150
134491440,9ptp4l0-21swapper/111:30:141
134491440,5ptp4l0-21swapper/009:00:260
134491440,4ptp4l7548-21apt-get10:25:110
134491440,4ptp4l7548-21apt-get10:25:110
134491440,4ptp4l0-21swapper/308:40:213
134491440,11ptp4l0-21swapper/207:40:182
1418199439,4cyclictest33-21ksoftirqd/209:34:592
1418199433,2cyclictest121rcu_preempt07:10:492
1418199432,3cyclictest121rcu_preempt11:02:122
1418199432,3cyclictest121rcu_preempt11:02:122
1418199431,2cyclictest121rcu_preempt07:21:412
1418099436,7cyclictest0-21swapper/110:33:251
1417999436,6cyclictest0-21swapper/007:35:130
1417999435,6cyclictest0-21swapper/009:25:260
1417999434,16cyclictest20489-21sed08:30:280
14179994338,2cyclictest20032-21if_enp1s010:50:160
1417999433,7cyclictest0-21swapper/009:32:060
1417999433,6cyclictest0-21swapper/009:40:210
14179994322,4cyclictest9-21ksoftirqd/012:20:230
1417999431,6cyclictest0-21swapper/009:10:270
134491430,9ptp4l0-21swapper/310:10:153
134491430,4ptp4l27573-21ntp_states11:05:231
134491430,4ptp4l0-21swapper/309:00:543
134491430,4ptp4l0-21swapper/208:15:182
134491430,3ptp4l26454-21apt-get11:05:133
134491430,10ptp4l0-21swapper/311:26:323
14182994235,4cyclictest41-21ksoftirqd/308:20:203
1418199424,3cyclictest33-21ksoftirqd/208:05:192
1417999424,6cyclictest9-21ksoftirqd/007:25:160
1417999423,13cyclictest0-21swapper/012:00:030
1417999421,7cyclictest0-21swapper/012:32:140
1417999421,5cyclictest9-21ksoftirqd/009:45:270
134491420,9ptp4l0-21swapper/011:36:060
134491420,5ptp4l0-21swapper/312:00:223
134491420,5ptp4l0-21swapper/010:10:170
134491420,4ptp4l31543-21meminfo07:45:190
134491420,4ptp4l2933-21apt-get10:15:131
134491420,4ptp4l22786-21meminfo10:55:180
134491420,4ptp4l18545-21ls11:55:180
134491420,4ptp4l0-21swapper/212:35:192
134491420,4ptp4l0-21swapper/212:35:192
134491420,4ptp4l0-21swapper/207:50:182
134491420,4ptp4l0-21swapper/111:20:171
134491420,4ptp4l0-21swapper/107:45:261
134491420,4ptp4l0-21swapper/012:25:270
134491420,3ptp4l23006-21iostat_ios12:05:191
134491420,3ptp4l17606-21apt-get11:55:102
134491420,2ptp4l13620-21ls08:15:270
14181994113,6cyclictest33-21ksoftirqd/210:00:302
1418199410,2cyclictest121rcu_preempt11:10:352
1418099416,10cyclictest9497-21taskset09:18:081
1418099414,4cyclictest25-21ksoftirqd/112:30:241
1417999415,6cyclictest0-21swapper/007:55:190
134491410,5ptp4l0-21swapper/311:45:183
134491410,5ptp4l0-21swapper/309:25:123
134491410,5ptp4l0-21swapper/209:05:252
134491410,4ptp4l6284-21ntp_states08:00:240
134491410,4ptp4l17686-21ntp_states07:15:233
134491410,4ptp4l15253-21apt-get11:50:112
134491410,4ptp4l0-21swapper/312:05:243
134491410,4ptp4l0-21swapper/310:35:273
134491410,4ptp4l0-21swapper/211:05:112
134491410,4ptp4l0-21swapper/112:25:171
134491410,4ptp4l0-21swapper/111:40:241
134491410,4ptp4l0-21swapper/108:31:591
134491410,4ptp4l0-21swapper/107:20:161
134491410,4ptp4l0-21swapper/009:55:110
134491410,4ptp4l0-21swapper/008:22:060
134491410,3ptp4l9754-21apt-get08:10:122
134491410,3ptp4l8536-21ls09:15:182
134491410,3ptp4l3157-21/usr/sbin/munin07:55:141
134491410,3ptp4l27191-21ntp_states09:55:232
134491410,3ptp4l20137-21apt-get12:00:122
134491410,3ptp4l16674-21apt-get08:25:102
134491410,3ptp4l0-21swapper/309:57:003
1418199405,3cyclictest33-21ksoftirqd/209:25:232
14181994029,9cyclictest33-21ksoftirqd/211:20:142
1418099405,6cyclictest0-21swapper/110:40:231
1417999400,6cyclictest10547-21gpgconf11:40:010
134491400,5ptp4l0-21swapper/112:00:171
134491400,4ptp4l3058-21df07:55:142
134491400,4ptp4l0-21swapper/312:35:083
134491400,4ptp4l0-21swapper/312:35:083
134491400,4ptp4l0-21swapper/312:34:423
134491400,4ptp4l0-21swapper/312:20:203
134491400,4ptp4l0-21swapper/311:55:263
134491400,4ptp4l0-21swapper/311:15:233
134491400,4ptp4l0-21swapper/310:00:213
134491400,4ptp4l0-21swapper/309:35:153
134491400,4ptp4l0-21swapper/309:30:593
134491400,4ptp4l0-21swapper/309:15:123
134491400,4ptp4l0-21swapper/309:10:293
134491400,4ptp4l0-21swapper/308:30:393
134491400,4ptp4l0-21swapper/308:10:173
134491400,4ptp4l0-21swapper/308:00:173
134491400,4ptp4l0-21swapper/211:34:112
134491400,4ptp4l0-21swapper/208:32:402
134491400,4ptp4l0-21swapper/111:48:191
134491400,4ptp4l0-21swapper/111:00:221
134491400,4ptp4l0-21swapper/111:00:221
134491400,4ptp4l0-21swapper/011:47:460
134491400,4ptp4l0-21swapper/011:09:230
134491400,4ptp4l0-21swapper/009:05:240
134491400,4ptp4l0-21swapper/007:52:240
134491400,4ptp4l0-21swapper/007:30:050
134491400,4ptp4l0-21swapper/007:15:320
134491400,3ptp4l7979-21hddtemp_smartct10:25:163
134491400,3ptp4l7979-21hddtemp_smartct10:25:163
134491400,3ptp4l29685-21ls11:10:203
134491400,3ptp4l22598-21ntp_states09:45:233
134491400,3ptp4l19821-21ls07:20:183
134491400,2ptp4l16784-1kworker/3:1H10:45:373
14181993934,3cyclictest33-21ksoftirqd/207:45:182
1418199390,2cyclictest121rcu_preempt10:24:012
134491390,5ptp4l1418299cyclictest10:40:123
134491390,5ptp4l0-21swapper/208:40:162
134491390,4ptp4l0-21swapper/311:35:133
134491390,4ptp4l0-21swapper/310:22:453
134491390,4ptp4l0-21swapper/310:15:033
134491390,4ptp4l0-21swapper/308:39:233
134491390,4ptp4l0-21swapper/308:05:263
134491390,4ptp4l0-21swapper/307:45:143
134491390,4ptp4l0-21swapper/307:10:103
134491390,4ptp4l0-21swapper/112:36:111
134491390,4ptp4l0-21swapper/112:36:111
134491390,4ptp4l0-21swapper/110:47:211
134491390,4ptp4l0-21swapper/110:20:021
134491390,4ptp4l0-21swapper/110:10:131
134491390,4ptp4l0-21swapper/110:05:291
134491390,4ptp4l0-21swapper/109:41:431
134491390,4ptp4l0-21swapper/109:28:071
134491390,4ptp4l0-21swapper/108:59:461
134491390,4ptp4l0-21swapper/108:50:241
134491390,4ptp4l0-21swapper/108:35:391
134491390,4ptp4l0-21swapper/108:20:171
134491390,4ptp4l0-21swapper/010:41:500
134491390,3ptp4l0-21swapper/309:05:303
134491380,7ptp4l0-21swapper/108:18:521
134491380,4ptp4l0-21swapper/307:25:153
134491380,4ptp4l0-21swapper/112:10:111
134491380,4ptp4l0-21swapper/110:00:171
134491380,4ptp4l0-21swapper/109:45:221
134491380,4ptp4l0-21swapper/107:44:121
134491380,3ptp4l0-21swapper/311:50:063
134491380,3ptp4l0-21swapper/310:30:233
134491380,3ptp4l0-21swapper/308:15:253
134491380,3ptp4l0-21swapper/210:10:152
134491380,3ptp4l0-21swapper/109:55:551
134491380,3ptp4l0-21swapper/108:12:111
134491380,3ptp4l0-21swapper/007:10:160
134491370,3ptp4l0-21swapper/112:18:431
134491370,3ptp4l0-21swapper/109:38:391
134491360,3ptp4l0-21swapper/108:00:151
134491330,3ptp4l0-21swapper/110:39:131
46198310,22rtkit-daemon0-21swapper/307:08:523
118332204,9sleep211848-21apt-get07:05:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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