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2026-05-01 - 18:08
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Fri May 01, 2026 12:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
129021730,6sleep01292-21unixbench_singl07:05:260
778821620,3sleep0199899cyclictest10:50:160
2373821440,4sleep2200099cyclictest07:55:192
134491750,39ptp4l41-21ksoftirqd/309:20:163
134491700,5ptp4l0-21swapper/211:15:122
168982670,5sleep30-21swapper/307:40:193
134491640,4ptp4l7256-21iostat07:20:150
134491640,18ptp4l8929-21apt-get08:35:122
134491630,4ptp4l0-21swapper/211:45:272
2001996232,10cyclictest41-21ksoftirqd/312:10:263
2001996230,4cyclictest41-21ksoftirqd/311:15:173
134491620,4ptp4l0-21swapper/207:50:002
134491600,4ptp4l0-21swapper/009:06:050
134491600,4ptp4l0-21swapper/008:30:210
134491600,18ptp4l0-21swapper/211:02:422
134491600,11ptp4l1545-21taskset07:08:082
134491590,4ptp4l0-21swapper/008:05:230
202152580,3sleep00-21swapper/010:05:260
134491580,4ptp4l0-21swapper/208:55:212
200199575,6cyclictest0-21swapper/309:34:273
200199574,7cyclictest0-21swapper/308:40:273
134491570,3ptp4l0-21swapper/210:30:212
134491560,4ptp4l0-21swapper/112:00:201
134491560,3ptp4l0-21swapper/311:53:423
134491560,3ptp4l0-21swapper/207:10:552
200199554,7cyclictest0-21swapper/307:25:163
200199553,6cyclictest0-21swapper/310:05:173
200199553,28cyclictest0-21swapper/309:01:193
200199552,34cyclictest0-21swapper/307:37:053
134491550,3ptp4l0-21swapper/311:40:313
134491550,3ptp4l0-21swapper/210:10:192
134491540,4ptp4l0-21swapper/207:54:562
200199534,6cyclictest0-21swapper/312:25:173
200199534,5cyclictest0-21swapper/311:39:283
200199532,6cyclictest0-21swapper/309:50:213
200199532,33cyclictest0-21swapper/310:25:423
200199532,33cyclictest0-21swapper/308:02:133
200199532,32cyclictest0-21swapper/307:32:003
134491530,4ptp4l0-21swapper/209:11:592
134491530,3ptp4l0-21swapper/209:49:422
200199525,7cyclictest0-21swapper/308:13:523
200199525,6cyclictest0-21swapper/309:49:263
200199524,6cyclictest0-21swapper/311:32:133
200199523,8cyclictest0-21swapper/308:50:233
200199522,32cyclictest0-21swapper/308:29:013
200199522,32cyclictest0-21swapper/308:29:013
200199522,31cyclictest0-21swapper/309:41:173
200199522,31cyclictest0-21swapper/308:06:143
200199521,8cyclictest41-21ksoftirqd/308:40:003
134491520,5ptp4l0-21swapper/208:03:292
134491520,4ptp4l0-21swapper/007:40:100
134491520,3ptp4l0-21swapper/209:15:242
134491520,3ptp4l0-21swapper/208:07:072
134491520,14ptp4l1835-21sed07:10:013
200199515,7cyclictest0-21swapper/311:57:523
200199515,6cyclictest0-21swapper/309:17:023
200199514,6cyclictest0-21swapper/312:36:083
200199514,6cyclictest0-21swapper/312:05:123
200199513,6cyclictest0-21swapper/310:15:273
200199512,33cyclictest0-21swapper/310:03:243
200199512,30cyclictest0-21swapper/309:57:183
134491510,5ptp4l0-21swapper/008:19:310
134491510,4ptp4l0-21swapper/011:47:000
134491510,3ptp4l0-21swapper/211:10:002
134491510,12ptp4l0-21swapper/207:31:352
134491510,11ptp4l0-21swapper/208:27:572
134491510,11ptp4l0-21swapper/208:27:572
200199503,6cyclictest0-21swapper/312:19:303
200199502,7cyclictest0-21swapper/307:55:213
200199502,6cyclictest0-21swapper/309:05:223
200199502,30cyclictest0-21swapper/308:46:133
200199500,8cyclictest134491ptp4l08:20:273
134491500,4ptp4l0-21swapper/210:58:112
134491500,4ptp4l0-21swapper/208:23:132
134491500,4ptp4l0-21swapper/010:23:550
134491500,3ptp4l0-21swapper/212:05:052
200199498,7cyclictest0-21swapper/310:45:253
200199494,6cyclictest0-21swapper/307:13:173
200199493,7cyclictest41-21ksoftirqd/311:25:123
200199493,7cyclictest41-21ksoftirqd/311:25:113
200199493,6cyclictest0-21swapper/311:10:153
200199493,11cyclictest0-21swapper/309:10:253
200199492,6cyclictest0-21swapper/311:05:173
134491490,3ptp4l0-21swapper/208:45:202
200199486,6cyclictest0-21swapper/312:00:463
200199485,2cyclictest41-21ksoftirqd/311:21:383
200199482,5cyclictest5531-21strings09:35:213
134491480,3ptp4l0-21swapper/111:38:011
200199475,6cyclictest0-21swapper/310:59:173
200199474,6cyclictest0-21swapper/312:20:383
200199474,6cyclictest0-21swapper/308:19:413
200199471,6cyclictest41-21ksoftirqd/310:50:143
134491470,4ptp4l0-21swapper/212:11:442
134491470,4ptp4l0-21swapper/211:54:152
134491470,3ptp4l0-21swapper/212:39:562
134491470,3ptp4l0-21swapper/211:32:152
134491470,3ptp4l0-21swapper/210:09:192
200199464,8cyclictest41-21ksoftirqd/307:52:413
200199464,6cyclictest0-21swapper/310:12:103
200199463,7cyclictest0-21swapper/309:26:563
200199462,5cyclictest0-21swapper/310:35:153
200199460,6cyclictest41-21ksoftirqd/307:45:163
200199460,6cyclictest41-21ksoftirqd/307:20:173
137891463,23phc2sys0-21swapper/212:30:172
134491460,3ptp4l0-21swapper/308:57:573
134491460,10ptp4l0-21swapper/008:44:270
200199455,5cyclictest0-21swapper/311:00:563
200199452,5cyclictest0-21swapper/308:30:163
134491450,4ptp4l0-21swapper/211:20:062
134491450,3ptp4l0-21swapper/210:35:552
134491450,3ptp4l0-21swapper/108:15:211
134491450,11ptp4l0-21swapper/207:38:562
134491450,10ptp4l0-21swapper/008:36:290
134491450,10ptp4l0-21swapper/007:33:350
200199445,6cyclictest0-21swapper/310:30:193
200199444,5cyclictest0-21swapper/310:44:033
200199440,6cyclictest0-21swapper/310:24:563
134491440,4ptp4l0-21swapper/209:06:552
134491440,4ptp4l0-21swapper/008:46:410
134491440,12ptp4l0-21swapper/012:10:120
134491430,5ptp4l10107-21ntp_states07:25:232
134491430,5ptp4l0-21swapper/007:55:190
134491430,5ptp4l0-21swapper/007:15:200
134491430,4ptp4l14697-21ntp_states07:35:210
134491430,4ptp4l0-21swapper/209:24:492
134491430,3ptp4l20457-21apt-get09:00:130
134491430,3ptp4l0-21swapper/211:12:382
134491430,2ptp4l311rcuc/210:20:142
134491430,10ptp4l0-21swapper/011:29:380
134491430,10ptp4l0-21swapper/011:29:380
134491430,10ptp4l0-21swapper/008:29:120
134491430,10ptp4l0-21swapper/008:29:120
200199424,6cyclictest0-21swapper/312:33:073
200199422,6cyclictest0-21swapper/307:16:383
199899420,3cyclictest121rcu_preempt08:50:400
134491420,9ptp4l0-21swapper/012:20:210
134491420,9ptp4l0-21swapper/010:25:300
134491420,4ptp4l32002-21apt-get08:15:122
134491420,4ptp4l27709-21df_inode08:05:151
134491420,4ptp4l2613-21apt-get10:40:112
134491420,4ptp4l19307-21hddtemp_smartct12:25:170
134491420,4ptp4l0-21swapper/212:15:382
134491420,4ptp4l0-21swapper/011:37:000
134491420,4ptp4l0-21swapper/009:56:310
134491420,3ptp4l4492-21apt-get09:35:122
134491420,3ptp4l0-21swapper/210:53:132
1999994136,3cyclictest25-21ksoftirqd/111:15:001
1998994125,3cyclictest9-21ksoftirqd/010:20:000
134491410,9ptp4l0-21swapper/011:08:370
134491410,5ptp4l0-21swapper/209:00:262
134491410,5ptp4l0-21swapper/008:20:200
134491410,4ptp4l7805-21ntp_states07:20:202
134491410,4ptp4l6806-21apt-get09:40:122
134491410,4ptp4l3158-21/usr/sbin/munin07:10:220
134491410,4ptp4l11246-21apt-get08:40:112
134491410,4ptp4l0-21swapper/208:50:202
134491410,4ptp4l0-21swapper/208:10:482
134491410,4ptp4l0-21swapper/110:15:181
134491410,4ptp4l0-21swapper/011:55:430
134491410,4ptp4l0-21swapper/010:36:100
134491410,4ptp4l0-21swapper/009:29:580
134491410,4ptp4l0-21swapper/009:12:400
134491410,4ptp4l0-21swapper/008:55:370
134491410,3ptp4l6631-21apt-get08:30:112
134491410,3ptp4l19815-21ls12:25:192
134491410,3ptp4l15902-21apt-get07:40:112
134491410,10ptp4l0-21swapper/010:31:360
200199402,30cyclictest0-21swapper/311:49:553
1999994035,3cyclictest25-21ksoftirqd/109:50:111
1999994031,7cyclictest25-21ksoftirqd/109:00:001
199899401,2cyclictest121rcu_preempt10:47:450
134491400,5ptp4l199899cyclictest10:12:310
134491400,5ptp4l0-21swapper/010:00:500
134491400,5ptp4l0-21swapper/009:45:090
134491400,4ptp4l10351-21irqstats10:55:170
134491400,4ptp4l0-21swapper/212:24:062
134491400,4ptp4l0-21swapper/210:15:112
134491400,4ptp4l0-21swapper/207:15:202
134491400,4ptp4l0-21swapper/107:40:151
134491400,4ptp4l0-21swapper/107:25:191
134491400,4ptp4l0-21swapper/012:31:220
134491400,4ptp4l0-21swapper/012:07:150
134491400,4ptp4l0-21swapper/011:50:100
134491400,4ptp4l0-21swapper/011:17:320
134491400,4ptp4l0-21swapper/009:50:170
134491400,4ptp4l0-21swapper/009:17:360
134491400,4ptp4l0-21swapper/008:10:450
134491400,4ptp4l0-21swapper/008:04:050
134491400,4ptp4l0-21swapper/007:54:500
134491400,4ptp4l0-21swapper/007:25:060
134491400,3ptp4l28832-21irqstats10:25:192
134491400,3ptp4l27913-21apt-get11:35:102
134491400,3ptp4l14120-21apt-get09:55:112
134491400,3ptp4l0-21swapper/209:25:212
1999993934,3cyclictest25-21ksoftirqd/112:10:001
1999993934,3cyclictest25-21ksoftirqd/111:05:001
134491390,5ptp4l0-21swapper/011:12:210
134491390,4ptp4l30234-21apt-get11:40:122
134491390,4ptp4l0-21swapper/212:00:242
134491390,4ptp4l0-21swapper/211:25:282
134491390,4ptp4l0-21swapper/211:25:272
134491390,4ptp4l0-21swapper/107:10:231
134491390,4ptp4l0-21swapper/012:35:080
134491390,4ptp4l0-21swapper/012:17:580
134491390,4ptp4l0-21swapper/012:00:410
134491390,4ptp4l0-21swapper/011:40:020
134491390,4ptp4l0-21swapper/011:30:190
134491390,4ptp4l0-21swapper/009:42:280
134491390,4ptp4l0-21swapper/009:39:220
134491390,4ptp4l0-21swapper/009:21:300
134491390,4ptp4l0-21swapper/007:45:490
134491390,3ptp4l6044-21users07:15:291
134491390,3ptp4l11595-21/usr/sbin/munin09:50:192
134491390,3ptp4l0-21swapper/011:20:290
134491390,2ptp4l3233-21strings09:30:200
1999993833,3cyclictest25-21ksoftirqd/112:00:001
1999993833,3cyclictest25-21ksoftirqd/108:50:121
134491380,4ptp4l5620-21sed10:45:182
134491380,4ptp4l0-21swapper/210:00:162
134491380,4ptp4l0-21swapper/111:40:371
134491380,4ptp4l0-21swapper/111:30:081
134491380,4ptp4l0-21swapper/110:59:151
134491380,4ptp4l0-21swapper/110:41:431
134491380,4ptp4l0-21swapper/109:18:271
134491380,4ptp4l0-21swapper/109:12:281
134491380,4ptp4l0-21swapper/108:41:261
134491380,4ptp4l0-21swapper/108:03:081
134491380,4ptp4l0-21swapper/107:55:221
134491380,4ptp4l0-21swapper/107:38:251
134491380,4ptp4l0-21swapper/107:30:241
134491380,4ptp4l0-21swapper/107:20:401
134491380,4ptp4l0-21swapper/011:04:070
134491380,4ptp4l0-21swapper/010:41:490
134491380,3ptp4l3131-21ls09:30:182
134491380,3ptp4l0-21swapper/211:59:012
134491380,3ptp4l0-21swapper/108:34:461
1999993733,3cyclictest25-21ksoftirqd/111:50:011
1999993732,3cyclictest25-21ksoftirqd/109:55:161
1999993732,3cyclictest25-21ksoftirqd/108:10:281
199999370,3cyclictest121rcu_preempt09:35:001
134491370,4ptp4l0-21swapper/111:19:461
134491370,4ptp4l0-21swapper/110:49:411
134491370,4ptp4l0-21swapper/110:12:361
134491370,4ptp4l0-21swapper/107:51:191
134491370,3ptp4l0-21swapper/109:39:151
134491370,3ptp4l0-21swapper/109:20:031
134491370,3ptp4l0-21swapper/108:45:231
134491370,3ptp4l0-21swapper/108:21:031
134491370,3ptp4l0-21swapper/107:48:241
46198360,13rtkit-daemon32310-21apache207:06:401
1999993631,3cyclictest25-21ksoftirqd/110:50:161
1999993631,3cyclictest25-21ksoftirqd/110:10:001
1999993631,3cyclictest25-21ksoftirqd/110:00:131
134491360,4ptp4l6225-21chrt08:28:071
134491360,4ptp4l6225-21chrt08:28:071
134491360,4ptp4l0-21swapper/109:01:121
134491360,3ptp4l19429-21interrupts12:25:171
134491360,3ptp4l0-21swapper/110:23:281
134491360,3ptp4l0-21swapper/109:49:421
134491360,3ptp4l0-21swapper/109:28:571
134491360,3ptp4l0-21swapper/108:38:121
1999993530,3cyclictest25-21ksoftirqd/112:32:421
199999351,3cyclictest121rcu_preempt11:26:071
199999351,3cyclictest121rcu_preempt11:26:071
1999993430,3cyclictest25-21ksoftirqd/109:40:201
1999993429,3cyclictest25-21ksoftirqd/112:35:161
1999993429,3cyclictest25-21ksoftirqd/112:19:591
1999993429,3cyclictest25-21ksoftirqd/112:10:191
1999993429,3cyclictest25-21ksoftirqd/110:35:171
1999993429,3cyclictest25-21ksoftirqd/110:35:001
1999993428,4cyclictest25-21ksoftirqd/111:23:141
134491340,3ptp4l0-21swapper/111:53:341
134491340,3ptp4l0-21swapper/111:08:401
1999993125,3cyclictest25-21ksoftirqd/112:25:001
1999993025,3cyclictest25-21ksoftirqd/109:10:011
1999992924,3cyclictest25-21ksoftirqd/110:25:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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