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2026-01-07 - 15:37
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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 Wed Jan 07, 2026 12:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2910021610,5sleep33068699cyclictest08:15:193
134491880,13ptp4l0-21swapper/007:45:170
134491620,4ptp4l0-21swapper/011:10:280
134491620,3ptp4l10398-21apt-get11:05:123
134491590,4ptp4l0-21swapper/310:52:043
134491590,2ptp4l25545-21gzip10:25:250
134491580,4ptp4l0-21swapper/007:20:260
134491580,3ptp4l0-21swapper/110:00:281
134491570,4ptp4l0-21swapper/312:09:543
134491570,3ptp4l0-21swapper/112:24:061
134491570,3ptp4l0-21swapper/107:14:061
134491570,3ptp4l0-21swapper/011:25:220
134491570,3ptp4l0-21swapper/009:21:190
30685995634,9cyclictest33-21ksoftirqd/211:25:252
134491560,4ptp4l0-21swapper/111:09:191
134491560,3ptp4l19845-21if_enp1s007:55:170
134491560,3ptp4l0-21swapper/109:30:071
134491560,3ptp4l0-21swapper/108:00:191
134491560,3ptp4l0-21swapper/012:10:180
30685995521,4cyclictest33-21ksoftirqd/212:18:152
134491550,3ptp4l0-21swapper/109:25:151
134491550,3ptp4l0-21swapper/108:24:361
134491550,3ptp4l0-21swapper/010:23:380
134491550,3ptp4l0-21swapper/008:43:270
30685995426,3cyclictest33-21ksoftirqd/208:09:392
134491540,3ptp4l0-21swapper/312:13:543
134491540,3ptp4l0-21swapper/111:22:201
134491540,3ptp4l0-21swapper/107:58:341
30685995324,3cyclictest33-21ksoftirqd/209:54:252
30685995318,7cyclictest33-21ksoftirqd/208:15:222
134491530,4ptp4l0-21swapper/012:31:270
134491530,4ptp4l0-21swapper/011:51:300
134491530,4ptp4l0-21swapper/009:05:310
134491530,3ptp4l0-21swapper/211:17:022
134491530,3ptp4l0-21swapper/211:17:022
134491530,3ptp4l0-21swapper/108:52:321
97022520,4sleep09706-21unixbench_singl09:50:270
30685995222,3cyclictest33-21ksoftirqd/208:32:542
30685995220,4cyclictest33-21ksoftirqd/210:24:102
134491520,4ptp4l0-21swapper/011:48:480
134491520,4ptp4l0-21swapper/011:48:480
134491520,4ptp4l0-21swapper/008:10:410
134491520,4ptp4l0-21swapper/008:10:400
134491520,3ptp4l0-21swapper/007:53:110
30685995123,7cyclictest33-21ksoftirqd/211:40:112
30685995122,6cyclictest33-21ksoftirqd/209:34:592
30685995120,5cyclictest33-21ksoftirqd/207:20:222
30685995120,4cyclictest33-21ksoftirqd/209:10:152
134491510,6ptp4l0-21swapper/008:35:170
134491510,5ptp4l1309-21lldpd07:05:282
134491510,4ptp4l0-21swapper/012:08:360
134491510,4ptp4l0-21swapper/008:05:530
134491510,4ptp4l0-21swapper/007:34:530
134491510,3ptp4l0-21swapper/011:30:230
134491510,2ptp4l12351-21cat07:40:000
30685995021,4cyclictest33-21ksoftirqd/211:30:512
30685995019,3cyclictest33-21ksoftirqd/210:30:152
30685995015,5cyclictest33-21ksoftirqd/209:15:172
30684995031,16cyclictest25-21ksoftirqd/110:50:161
134491500,9ptp4l29301-21memory07:05:191
134491500,4ptp4l0-21swapper/009:40:010
30685994921,5cyclictest33-21ksoftirqd/208:20:412
30685994920,3cyclictest33-21ksoftirqd/209:00:242
30685994917,3cyclictest33-21ksoftirqd/211:21:422
30685994916,3cyclictest33-21ksoftirqd/210:00:232
134491490,4ptp4l0-21swapper/310:48:253
134491490,4ptp4l0-21swapper/307:37:283
134491490,4ptp4l0-21swapper/007:41:180
134491490,3ptp4l0-21swapper/208:49:362
134491490,3ptp4l0-21swapper/107:36:261
134491490,3ptp4l0-21swapper/007:15:140
134491490,11ptp4l29774-21/usr/sbin/munin07:05:230
3068599483,2cyclictest121rcu_preempt12:30:582
30685994821,7cyclictest33-21ksoftirqd/210:50:412
30685994821,6cyclictest33-21ksoftirqd/212:06:242
30685994819,4cyclictest33-21ksoftirqd/211:09:382
30685994818,3cyclictest33-21ksoftirqd/208:55:572
30685994817,4cyclictest33-21ksoftirqd/209:35:312
30685994817,4cyclictest33-21ksoftirqd/208:37:472
30685994817,4cyclictest33-21ksoftirqd/208:04:342
30685994817,3cyclictest33-21ksoftirqd/212:00:262
30685994817,3cyclictest33-21ksoftirqd/207:57:112
3068499482,44cyclictest0-21swapper/108:40:281
134491480,4ptp4l0-21swapper/308:40:253
134491480,3ptp4l0-21swapper/012:38:150
134491480,3ptp4l0-21swapper/012:03:170
134491480,3ptp4l0-21swapper/009:10:290
30685994720,7cyclictest33-21ksoftirqd/209:48:482
30685994720,7cyclictest33-21ksoftirqd/207:48:462
30685994717,5cyclictest33-21ksoftirqd/210:35:162
134491470,5ptp4l0-21swapper/307:05:423
134491470,4ptp4l0-21swapper/307:45:063
134491470,4ptp4l0-21swapper/011:02:340
134491470,3ptp4l0-21swapper/110:28:011
134491470,3ptp4l0-21swapper/109:07:551
134491470,3ptp4l0-21swapper/010:14:150
30685994621,6cyclictest33-21ksoftirqd/207:15:282
30685994620,3cyclictest33-21ksoftirqd/208:40:282
30685994617,4cyclictest33-21ksoftirqd/212:25:272
30685994617,4cyclictest33-21ksoftirqd/208:50:182
30685994616,3cyclictest33-21ksoftirqd/207:27:512
30685994615,6cyclictest33-21ksoftirqd/212:20:142
3068599461,3cyclictest121rcu_preempt11:50:142
30685994611,6cyclictest33-21ksoftirqd/209:20:232
134491460,3ptp4l30944-21idleruntime-cro10:40:001
134491460,3ptp4l0-21swapper/012:19:250
134491460,3ptp4l0-21swapper/010:06:050
134491460,3ptp4l0-21swapper/009:35:250
134491460,3ptp4l0-21swapper/008:45:340
30685994518,5cyclictest33-21ksoftirqd/210:11:542
30685994517,5cyclictest33-21ksoftirqd/207:41:502
134491450,4ptp4l0-21swapper/011:19:390
134491450,4ptp4l0-21swapper/011:19:390
134491450,3ptp4l0-21swapper/110:11:501
134491450,3ptp4l0-21swapper/109:46:091
134491450,3ptp4l0-21swapper/009:49:190
30686994439,3cyclictest41-21ksoftirqd/312:20:013
30685994422,7cyclictest33-21ksoftirqd/211:10:272
30685994419,7cyclictest33-21ksoftirqd/209:58:262
30685994418,5cyclictest33-21ksoftirqd/207:39:142
30685994413,3cyclictest33-21ksoftirqd/211:45:272
30685994413,3cyclictest33-21ksoftirqd/211:45:272
3068599441,2cyclictest121rcu_preempt08:12:382
3068599441,2cyclictest121rcu_preempt08:12:372
30685994411,3cyclictest33-21ksoftirqd/210:05:162
3068599440,2cyclictest121rcu_preempt11:00:252
134491440,5ptp4l0-21swapper/107:25:221
134491440,4ptp4l0-21swapper/009:16:010
134491440,3ptp4l0-21swapper/310:59:553
134491440,3ptp4l0-21swapper/112:26:091
134491440,3ptp4l0-21swapper/111:46:101
134491440,3ptp4l0-21swapper/111:46:101
134491440,3ptp4l0-21swapper/109:50:041
134491440,3ptp4l0-21swapper/109:42:491
134491440,3ptp4l0-21swapper/009:29:580
30685994338,3cyclictest33-21ksoftirqd/211:00:012
30685994312,9cyclictest33-21ksoftirqd/210:20:012
30685994311,6cyclictest33-21ksoftirqd/208:25:152
3068599430,2cyclictest121rcu_preempt11:36:162
3068499430,4cyclictest4129-21perl12:00:161
134491430,9ptp4l0-21swapper/008:24:260
134491430,5ptp4l0-21swapper/308:20:143
134491430,3ptp4l0-21swapper/112:37:261
134491430,3ptp4l0-21swapper/112:07:141
134491430,2ptp4l0-21swapper/109:17:511
134491430,11ptp4l0-21swapper/209:28:052
30685994236,3cyclictest33-21ksoftirqd/207:10:142
3068599423,2cyclictest121rcu_preempt10:47:452
30685994216,5cyclictest33-21ksoftirqd/207:31:402
3068599421,2cyclictest121rcu_preempt11:57:292
30685994212,3cyclictest33-21ksoftirqd/209:05:142
30684994212,28cyclictest18643-21kworker/1:207:15:491
134491420,5ptp4l11754-21/usr/sbin/munin11:05:260
134491420,4ptp4l8388-21iostat_ios07:30:191
134491420,3ptp4l0-21swapper/008:19:040
134491420,10ptp4l0-21swapper/010:34:250
30685994123,16cyclictest33-21ksoftirqd/212:39:592
30685994113,3cyclictest33-21ksoftirqd/207:50:252
134491410,9ptp4l0-21swapper/210:27:442
134491410,6ptp4l0-21swapper/010:45:210
134491410,5ptp4l0-21swapper/110:30:141
134491410,5ptp4l0-21swapper/107:20:201
134491410,4ptp4l30724-21apt-get09:30:020
134491410,4ptp4l24490-21apt-get11:35:090
134491410,4ptp4l22037-21df_inode09:10:161
134491410,4ptp4l19624-21apt-get11:25:143
134491410,4ptp4l15691-21meminfo07:45:171
134491410,4ptp4l13951-21/usr/sbin/munin10:00:233
134491410,4ptp4l10369-21apt-get09:55:130
134491410,4ptp4l0-21swapper/008:30:270
134491410,3ptp4l31208-21apt-get10:40:112
134491400,5ptp4l0-21swapper/311:15:123
134491400,5ptp4l0-21swapper/311:15:123
134491400,5ptp4l0-21swapper/107:40:181
134491400,4ptp4l5768-21apt-get10:55:131
134491400,4ptp4l22838-21ntp_states08:00:230
134491400,4ptp4l1818-21memory08:25:200
134491400,4ptp4l12756-21df_inode08:50:150
134491400,4ptp4l11097-21meminfo08:45:181
134491400,4ptp4l0-21swapper/112:30:201
134491400,4ptp4l0-21swapper/111:50:161
134491400,4ptp4l0-21swapper/111:35:101
134491400,4ptp4l0-21swapper/109:23:151
134491400,4ptp4l0-21swapper/108:15:141
134491400,4ptp4l0-21swapper/008:56:070
134491400,3ptp4l9512-21ls11:00:253
134491400,3ptp4l5768-21apt-get10:55:140
134491400,3ptp4l4971-21ls10:50:260
134491400,3ptp4l19598-21apt-get10:15:111
134491400,3ptp4l1313-21apt-get11:55:110
30685993934,3cyclictest33-21ksoftirqd/209:40:242
30685993932,4cyclictest33-21ksoftirqd/212:10:192
134491390,5ptp4l0-21swapper/307:10:133
134491390,5ptp4l0-21swapper/109:35:141
134491390,5ptp4l0-21swapper/108:25:151
134491390,4ptp4l4792-21ls08:30:263
134491390,4ptp4l2590-21ls10:45:271
134491390,4ptp4l18662-21sensors_temp11:20:250
134491390,4ptp4l0-21swapper/309:54:043
134491390,4ptp4l0-21swapper/307:25:213
134491390,4ptp4l0-21swapper/112:15:111
134491390,4ptp4l0-21swapper/111:15:141
134491390,4ptp4l0-21swapper/111:15:131
134491390,4ptp4l0-21swapper/109:55:161
134491390,4ptp4l0-21swapper/108:59:581
134491390,4ptp4l0-21swapper/108:30:171
134491390,4ptp4l0-21swapper/108:06:461
134491390,4ptp4l0-21swapper/010:40:240
134491390,4ptp4l0-21swapper/009:00:180
134491390,4ptp4l0-21swapper/007:26:430
134491390,4ptp4l0-21swapper/007:10:460
134491390,3ptp4l5734-21df08:35:131
134491390,3ptp4l29090-21df10:35:130
134491390,3ptp4l27113-21df_inode11:40:110
134491390,3ptp4l23098-21ntp_states10:20:241
134491390,3ptp4l20719-21ntp_states10:15:230
134491390,3ptp4l17544-21apt-get12:30:123
134491390,3ptp4l12927-21/usr/sbin/munin12:20:173
134491390,3ptp4l0-21swapper/010:02:420
134491380,4ptp4l26942-21ps09:20:183
134491380,4ptp4l25-21ksoftirqd/111:30:181
134491380,4ptp4l0-21swapper/311:10:293
134491380,4ptp4l0-21swapper/310:42:593
134491380,4ptp4l0-21swapper/309:35:103
134491380,4ptp4l0-21swapper/309:27:593
134491380,4ptp4l0-21swapper/309:06:383
134491380,4ptp4l0-21swapper/307:41:523
134491380,4ptp4l0-21swapper/112:10:151
134491380,4ptp4l0-21swapper/111:55:221
134491380,4ptp4l0-21swapper/111:27:361
134491380,4ptp4l0-21swapper/111:10:281
134491380,4ptp4l0-21swapper/111:00:201
134491380,4ptp4l0-21swapper/110:05:241
134491380,4ptp4l0-21swapper/109:00:021
134491380,4ptp4l0-21swapper/108:10:271
134491380,4ptp4l0-21swapper/108:10:271
134491380,4ptp4l0-21swapper/107:50:241
134491380,4ptp4l0-21swapper/012:29:430
134491380,4ptp4l0-21swapper/012:20:230
134491380,3ptp4l1734-21ntp_states07:15:233
134491380,3ptp4l0-21swapper/311:39:583
134491370,5ptp4l0-21swapper/309:12:313
134491370,4ptp4l0-21swapper/310:38:493
134491370,4ptp4l0-21swapper/310:27:453
134491370,4ptp4l0-21swapper/309:55:563
134491370,4ptp4l0-21swapper/309:45:463
134491370,4ptp4l0-21swapper/309:43:593
134491370,4ptp4l0-21swapper/309:17:303
134491370,4ptp4l0-21swapper/308:38:593
134491370,4ptp4l0-21swapper/308:05:253
134491370,4ptp4l0-21swapper/307:52:393
134491370,4ptp4l0-21swapper/307:33:583
134491370,4ptp4l0-21swapper/111:40:041
134491370,4ptp4l0-21swapper/110:40:221
134491370,3ptp4l30682-21cyclictest10:30:113
134491370,3ptp4l19109-21sshd10:12:043
134491370,3ptp4l0-21swapper/312:04:223
134491370,3ptp4l0-21swapper/311:42:143
134491370,3ptp4l0-21swapper/310:05:283
134491370,3ptp4l0-21swapper/308:56:393
134491360,4ptp4l0-21swapper/312:35:413
134491360,4ptp4l0-21swapper/311:52:183
134491360,4ptp4l0-21swapper/311:34:343
134491360,4ptp4l0-21swapper/311:20:183
134491360,4ptp4l0-21swapper/310:24:553
134491360,4ptp4l0-21swapper/310:17:133
134491360,4ptp4l0-21swapper/309:34:033
134491360,4ptp4l0-21swapper/308:12:333
134491360,4ptp4l0-21swapper/308:12:333
134491360,3ptp4l0-21swapper/312:26:203
134491360,3ptp4l0-21swapper/309:03:133
134491360,3ptp4l0-21swapper/308:01:053
134491360,3ptp4l0-21swapper/307:56:203
134491360,3ptp4l0-21swapper/307:24:473
134491350,3ptp4l0-21swapper/311:59:403
134491350,3ptp4l0-21swapper/311:45:053
134491350,3ptp4l0-21swapper/311:45:053
134491340,4ptp4l0-21swapper/308:51:423
134491340,2ptp4l0-21swapper/308:47:463
134491320,3ptp4l0-21swapper/308:25:513
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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