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2026-08-13 - 17:20
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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 Thu Aug 13, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2546699674,61cyclictest0-21swapper/210:20:282
25464996733,6cyclictest9-21ksoftirqd/010:15:280
25464996732,6cyclictest9-21ksoftirqd/009:15:000
25464996532,7cyclictest9-21ksoftirqd/008:40:160
25464996431,6cyclictest9-21ksoftirqd/009:45:280
25464996431,6cyclictest9-21ksoftirqd/009:44:590
134491640,4ptp4l0-21swapper/107:30:571
134491640,3ptp4l13009-21apt-get11:20:111
25464996331,6cyclictest9-21ksoftirqd/011:35:250
25464996331,5cyclictest9-21ksoftirqd/012:30:000
25464996331,5cyclictest9-21ksoftirqd/012:30:000
25464996233,4cyclictest9-21ksoftirqd/010:30:120
25464996231,6cyclictest9-21ksoftirqd/008:45:200
25464996230,5cyclictest9-21ksoftirqd/011:05:180
25464996230,5cyclictest9-21ksoftirqd/008:30:210
25464996229,5cyclictest9-21ksoftirqd/010:35:100
25464996228,6cyclictest9-21ksoftirqd/008:10:200
2546799618,11cyclictest27488-21taskset07:14:263
2546799618,11cyclictest27488-21taskset07:14:263
25464996132,6cyclictest9-21ksoftirqd/011:10:160
25464996131,5cyclictest9-21ksoftirqd/011:20:010
25464996130,5cyclictest9-21ksoftirqd/007:15:220
25464996129,6cyclictest9-21ksoftirqd/012:35:150
25464996129,3cyclictest9-21ksoftirqd/007:50:010
25464996128,5cyclictest9-21ksoftirqd/007:10:120
25464996128,5cyclictest9-21ksoftirqd/007:10:120
25464996127,5cyclictest9-21ksoftirqd/007:55:180
2546499610,2cyclictest137891phc2sys07:42:410
25464996032,3cyclictest9-21ksoftirqd/010:10:260
25464996030,5cyclictest9-21ksoftirqd/009:00:010
25464996030,5cyclictest9-21ksoftirqd/009:00:010
25464996028,6cyclictest9-21ksoftirqd/009:20:160
25464996028,5cyclictest9-21ksoftirqd/011:05:010
25464996025,5cyclictest9-21ksoftirqd/010:05:130
2546799596,11cyclictest5546-21taskset11:01:543
25464995933,7cyclictest9-21ksoftirqd/008:38:080
25464995930,5cyclictest9-21ksoftirqd/010:50:140
25464995927,5cyclictest9-21ksoftirqd/009:30:140
134491590,4ptp4l0-21swapper/208:47:032
134491590,4ptp4l0-21swapper/012:00:170
47152580,6sleep02546499cyclictest09:50:240
2546699587,6cyclictest0-21swapper/211:20:202
25464995831,6cyclictest9-21ksoftirqd/011:50:470
25464995828,4cyclictest9-21ksoftirqd/011:40:140
25464995825,6cyclictest9-21ksoftirqd/008:15:180
25464995825,5cyclictest9-21ksoftirqd/010:20:180
25464995825,5cyclictest9-21ksoftirqd/007:25:130
134491580,4ptp4l0-21swapper/211:15:032
134491580,4ptp4l0-21swapper/112:20:201
134491580,1ptp4l241ktimersoftd/111:33:271
25464995729,8cyclictest9-21ksoftirqd/011:30:000
25464995726,4cyclictest9-21ksoftirqd/011:55:160
25464995725,5cyclictest9-21ksoftirqd/008:50:140
134491570,4ptp4l0-21swapper/309:29:113
134491570,4ptp4l0-21swapper/309:29:113
134491570,3ptp4l0-21swapper/211:27:002
134491570,3ptp4l0-21swapper/108:40:291
134491570,12ptp4l0-21swapper/109:05:121
25464995629,7cyclictest9-21ksoftirqd/010:50:000
25464995629,7cyclictest9-21ksoftirqd/009:25:140
25464995629,7cyclictest9-21ksoftirqd/009:25:140
25464995623,5cyclictest9-21ksoftirqd/008:05:110
25464995622,5cyclictest9-21ksoftirqd/008:05:010
2546799558,12cyclictest17269-21taskset11:28:583
2546799557,12cyclictest17017-21taskset10:17:563
2546699557,7cyclictest0-21swapper/207:35:212
2546499556,5cyclictest9-21ksoftirqd/011:50:000
25464995519,6cyclictest9-21ksoftirqd/007:20:260
134491550,4ptp4l0-21swapper/112:01:571
134491550,3ptp4l0-21swapper/110:21:081
134491550,3ptp4l0-21swapper/109:19:421
2546699547,12cyclictest0-21swapper/210:00:272
2546699546,6cyclictest0-21swapper/209:32:322
2546699546,10cyclictest0-21swapper/208:36:052
2546699546,10cyclictest0-21swapper/208:19:322
2546699545,6cyclictest0-21swapper/207:20:162
2546499546,5cyclictest27528-21apt-get08:25:000
25464995426,3cyclictest9-21ksoftirqd/010:40:180
25464995423,7cyclictest9-21ksoftirqd/007:35:240
25464995420,5cyclictest9-21ksoftirqd/010:55:260
25464995418,6cyclictest9-21ksoftirqd/007:30:210
134491540,3ptp4l0-21swapper/311:51:163
2546699537,6cyclictest0-21swapper/207:30:202
2546699537,10cyclictest0-21swapper/207:50:592
25464995325,8cyclictest9-21ksoftirqd/009:15:200
134491530,4ptp4l0-21swapper/111:26:321
134491530,4ptp4l0-21swapper/110:38:081
134491530,3ptp4l0-21swapper/111:04:041
134491530,3ptp4l0-21swapper/108:54:221
134491530,3ptp4l0-21swapper/107:35:531
134491530,10ptp4l23133-21apt-get07:05:121
2546799528,11cyclictest12638-21taskset12:29:223
2546799528,11cyclictest12638-21taskset12:29:213
2546799526,6cyclictest0-21swapper/310:45:213
2546799521,11cyclictest10803-21grep08:55:183
2546799521,11cyclictest10803-21grep08:55:183
2546699526,3cyclictest0-21swapper/209:35:172
2546699526,10cyclictest0-21swapper/212:30:532
2546499525,3cyclictest9-21ksoftirqd/011:25:010
2546499522,2cyclictest121rcu_preempt10:05:000
25464995219,5cyclictest9-21ksoftirqd/012:05:160
2546799519,15cyclictest20492-21sh09:15:223
2546699516,6cyclictest0-21swapper/210:55:212
2546699516,11cyclictest0-21swapper/209:20:052
2546699516,10cyclictest0-21swapper/210:48:352
2546699515,10cyclictest0-21swapper/212:23:302
2546499515,8cyclictest9-21ksoftirqd/007:50:190
2546499514,3cyclictest9-21ksoftirqd/009:00:150
2546499514,3cyclictest0-21swapper/012:15:170
2546499512,6cyclictest121rcu_preempt12:14:590
134491510,5ptp4l2546799cyclictest09:47:573
134491510,4ptp4l0-21swapper/208:14:342
134491510,4ptp4l0-21swapper/108:03:541
134491510,3ptp4l0-21swapper/112:30:261
2546799508,11cyclictest0-21swapper/307:15:173
2546799503,12cyclictest1-21systemd10:00:273
2546699506,12cyclictest0-21swapper/210:30:182
2546699502,7cyclictest0-21swapper/209:40:202
25464995030,7cyclictest9-21ksoftirqd/012:30:160
2546499500,5cyclictest30782-21apt-config09:40:000
134491500,3ptp4l0-21swapper/110:00:251
134491500,18ptp4l25-21ksoftirqd/107:18:171
2546799498,6cyclictest0-21swapper/309:00:293
2546799498,6cyclictest0-21swapper/308:15:123
2546799491,11cyclictest6782-21cut12:15:213
2546699497,6cyclictest0-21swapper/207:44:092
2546699496,6cyclictest0-21swapper/211:34:282
2546699496,5cyclictest0-21swapper/211:13:352
2546499495,5cyclictest9-21ksoftirqd/009:05:140
2546499493,7cyclictest9-21ksoftirqd/010:25:120
134491490,3ptp4l0-21swapper/108:13:541
2546799488,6cyclictest0-21swapper/307:30:243
2546799487,7cyclictest0-21swapper/309:20:253
2546699485,6cyclictest0-21swapper/207:25:242
25466994813,33cyclictest9802-21kworker/2:210:05:272
2546499484,7cyclictest9-21ksoftirqd/008:25:170
2546499484,5cyclictest8344-21acpi12:20:110
2546499483,5cyclictest9-21ksoftirqd/009:55:160
2546499482,11cyclictest0-21swapper/011:30:140
134491480,4ptp4l0-21swapper/209:49:572
134491480,4ptp4l0-21swapper/110:53:401
2546799478,6cyclictest0-21swapper/307:42:423
2546699475,7cyclictest0-21swapper/212:10:162
2546699473,12cyclictest0-21swapper/211:50:202
2546699471,7cyclictest0-21swapper/208:00:152
2546699470,14cyclictest33-21ksoftirqd/209:10:202
2546699470,11cyclictest0-21swapper/207:57:132
134491470,3ptp4l0-21swapper/112:16:341
2546699460,6cyclictest33-21ksoftirqd/212:04:062
2546699460,6cyclictest33-21ksoftirqd/208:05:582
134491460,3ptp4l0-21swapper/109:22:591
134491460,12ptp4l29350-21switchtime08:25:251
134491460,11ptp4l0-21swapper/211:05:592
2546699455,5cyclictest33-21ksoftirqd/209:54:532
2546699453,6cyclictest0-21swapper/210:25:412
2546699451,14cyclictest14762-21/usr/sbin/munin09:05:252
134491450,9ptp4l0-21swapper/208:41:222
134491450,4ptp4l0-21swapper/107:52:141
2546799447,6cyclictest0-21swapper/308:05:113
2546799441,9cyclictest0-21swapper/312:35:143
2546699448,11cyclictest0-21swapper/212:05:242
2546699446,10cyclictest0-21swapper/208:20:182
2546699445,6cyclictest0-21swapper/212:15:142
134491440,9ptp4l0-21swapper/209:18:372
134491440,9ptp4l0-21swapper/112:27:071
134491440,9ptp4l0-21swapper/112:27:071
134491440,5ptp4l0-21swapper/207:05:442
134491440,4ptp4l0-21swapper/107:58:431
134491440,3ptp4l0-21swapper/111:53:551
134491440,3ptp4l0-21swapper/111:05:201
2546799436,6cyclictest0-21swapper/311:30:203
2546699436,10cyclictest0-21swapper/209:55:132
2546699434,6cyclictest0-21swapper/211:40:222
2546699432,6cyclictest0-21swapper/210:15:192
134491430,9ptp4l0-21swapper/212:39:032
134491430,9ptp4l0-21swapper/210:51:312
134491430,9ptp4l0-21swapper/209:26:002
134491430,9ptp4l0-21swapper/209:26:002
134491430,4ptp4l0-21swapper/110:33:131
134491430,4ptp4l0-21swapper/108:17:131
134491430,3ptp4l0-21swapper/110:15:471
134491430,3ptp4l0-21swapper/109:39:251
134491430,10ptp4l0-21swapper/208:52:172
2546799427,6cyclictest0-21swapper/307:45:263
2546799422,15cyclictest0-21swapper/311:40:013
2546699424,4cyclictest30262-21apt-get08:30:132
134691420,10getstats0-21swapper/311:05:293
134491420,8ptp4l0-21swapper/210:41:182
134491420,5ptp4l0-21swapper/307:55:173
134491420,5ptp4l0-21swapper/007:05:150
134491420,4ptp4l27129-21users08:20:291
134491420,4ptp4l0-21swapper/111:49:261
134491420,4ptp4l0-21swapper/108:45:301
134491420,4ptp4l0-21swapper/107:48:141
134491420,3ptp4l11625-21apt-get07:50:123
134491420,3ptp4l0-21swapper/210:35:252
134491420,2ptp4l121rcu_preempt08:30:551
134491420,2ptp4l0-21swapper/307:20:203
2546699415,6cyclictest0-21swapper/207:10:252
2546699415,6cyclictest0-21swapper/207:10:252
2546699414,5cyclictest0-21swapper/207:45:172
2546699412,5cyclictest0-21swapper/211:00:592
2546699410,6cyclictest27804-21dpkg08:25:012
25465994136,3cyclictest25-21ksoftirqd/109:05:001
134491410,5ptp4l26616-21ntp_states07:10:221
134491410,5ptp4l26616-21ntp_states07:10:221
134491410,5ptp4l24792-21head07:05:273
134491410,5ptp4l0-21swapper/111:55:111
134491410,5ptp4l0-21swapper/110:25:201
134491410,5ptp4l0-21swapper/108:39:301
134491410,4ptp4l4481-21ntp_states09:50:231
134491410,4ptp4l27779-21ntp_states10:40:231
134491410,4ptp4l27398-21ntp_states09:30:231
134491410,4ptp4l0-21swapper/109:40:301
134491410,3ptp4l2769-21python10:55:251
134491410,3ptp4l25000-21ls09:25:211
134491410,3ptp4l25000-21ls09:25:201
134491410,3ptp4l0-21swapper/111:16:011
134491410,10ptp4l0-21swapper/107:44:341
2546799401,9cyclictest0-21swapper/308:40:263
25465994035,3cyclictest25-21ksoftirqd/112:10:001
134691400,10getstats0-21swapper/308:49:593
134491400,5ptp4l0-21swapper/310:35:223
134491400,4ptp4l0-21swapper/310:26:103
134491400,4ptp4l0-21swapper/309:31:473
134491400,4ptp4l0-21swapper/210:14:392
134491400,4ptp4l0-21swapper/208:56:202
134491400,4ptp4l0-21swapper/208:56:202
134491400,4ptp4l0-21swapper/110:45:231
134491400,4ptp4l0-21swapper/110:11:011
134491400,4ptp4l0-21swapper/108:09:131
134491400,3ptp4l9948-21apt-get08:55:101
134491400,3ptp4l9948-21apt-get08:55:101
134491400,3ptp4l0-21swapper/109:55:231
2546799392,5cyclictest0-21swapper/308:10:203
134491390,5ptp4l17619-21taskset09:10:171
134491390,5ptp4l0-21swapper/311:56:013
134491390,4ptp4l0-21swapper/312:00:433
134491390,4ptp4l0-21swapper/311:24:153
134491390,4ptp4l0-21swapper/310:55:313
134491390,4ptp4l0-21swapper/310:51:593
134491390,4ptp4l0-21swapper/310:40:063
134491390,4ptp4l0-21swapper/310:31:403
134491390,4ptp4l0-21swapper/310:24:553
134491390,4ptp4l0-21swapper/309:53:393
134491390,4ptp4l0-21swapper/309:40:313
134491390,4ptp4l0-21swapper/308:20:463
134491390,4ptp4l0-21swapper/308:01:083
134491390,4ptp4l0-21swapper/307:35:193
134491390,4ptp4l0-21swapper/212:25:172
134491390,4ptp4l0-21swapper/212:25:172
134491390,4ptp4l0-21swapper/211:55:292
134491390,4ptp4l0-21swapper/211:37:452
134491390,4ptp4l0-21swapper/209:02:402
134491390,4ptp4l0-21swapper/207:16:422
134491390,4ptp4l0-21swapper/112:10:241
134491390,4ptp4l0-21swapper/111:40:131
134491390,4ptp4l0-21swapper/111:35:221
134491390,4ptp4l0-21swapper/110:05:511
134491390,4ptp4l0-21swapper/109:45:211
134491390,4ptp4l0-21swapper/107:26:351
134491390,3ptp4l8953-21iostat11:10:171
134491390,3ptp4l15542-21df_inode12:35:151
2546799382,5cyclictest0-21swapper/312:13:573
2546799382,4cyclictest0-21swapper/311:10:213
134491380,4ptp4l2546799cyclictest09:06:313
134491380,4ptp4l0-21swapper/312:32:203
134491380,4ptp4l0-21swapper/312:21:533
134491380,4ptp4l0-21swapper/311:47:073
134491380,4ptp4l0-21swapper/311:43:253
134491380,4ptp4l0-21swapper/311:18:253
134491380,4ptp4l0-21swapper/310:10:473
134491380,4ptp4l0-21swapper/310:05:153
134491380,4ptp4l0-21swapper/309:37:343
134491380,4ptp4l0-21swapper/308:39:113
134491380,4ptp4l0-21swapper/307:28:293
134491380,4ptp4l0-21swapper/107:20:591
134491380,3ptp4l0-21swapper/211:46:202
134491370,4ptp4l0-21swapper/309:10:023
134491370,4ptp4l0-21swapper/308:50:223
134491370,4ptp4l0-21swapper/308:34:533
134491370,4ptp4l0-21swapper/308:27:193
134491370,3ptp4l0-21swapper/309:58:303
134491360,4ptp4l0-21swapper/312:06:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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