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2026-05-11 - 23:02
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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 Mon May 11, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
319692750,3sleep231968-21grep09:25:252
319692750,3sleep231968-21grep09:25:252
176342750,4sleep10-21swapper/110:05:201
134491630,2ptp4l6698-21ls09:40:251
134491620,5ptp4l0-21swapper/010:30:200
37299597,6cyclictest0-21swapper/011:50:280
37299577,6cyclictest0-21swapper/011:00:130
134491570,5ptp4l0-21swapper/010:15:200
134491570,3ptp4l0-21swapper/008:40:350
37499566,6cyclictest0-21swapper/212:15:212
134491560,4ptp4l0-21swapper/108:09:001
134491560,3ptp4l0-21swapper/111:30:251
134491560,3ptp4l0-21swapper/107:20:381
134491560,3ptp4l0-21swapper/007:14:220
134491560,15ptp4l0-21swapper/107:51:311
134491550,4ptp4l0-21swapper/109:14:421
134491550,4ptp4l0-21swapper/108:35:401
134491550,3ptp4l0-21swapper/107:45:251
37499545,6cyclictest0-21swapper/207:15:222
37499543,10cyclictest0-21swapper/207:10:222
134491540,4ptp4l0-21swapper/208:29:092
134491540,4ptp4l0-21swapper/108:29:261
134491540,3ptp4l0-21swapper/110:42:111
37499535,6cyclictest0-21swapper/209:40:232
37499535,6cyclictest0-21swapper/209:35:172
37499535,6cyclictest0-21swapper/207:25:152
37499534,6cyclictest0-21swapper/210:15:242
37499534,6cyclictest0-21swapper/207:30:222
37499532,7cyclictest0-21swapper/207:49:272
37299537,6cyclictest0-21swapper/009:29:040
37299537,6cyclictest0-21swapper/009:29:040
134491530,11ptp4l31070-21iostat07:05:191
134491530,11ptp4l0-21swapper/107:38:211
37499524,6cyclictest0-21swapper/212:20:272
37499524,6cyclictest0-21swapper/209:15:132
37499524,6cyclictest0-21swapper/209:05:172
37299526,5cyclictest0-21swapper/011:40:160
37299524,15cyclictest8290-21iostat10:55:190
134491520,3ptp4l0-21swapper/109:20:591
37499515,11cyclictest0-21swapper/207:35:132
37499514,11cyclictest0-21swapper/210:55:232
37499513,6cyclictest0-21swapper/208:00:262
37499513,10cyclictest0-21swapper/211:30:202
37499511,6cyclictest33-21ksoftirqd/208:05:242
37499510,6cyclictest14621-21/usr/sbin/munin11:10:192
37299516,6cyclictest20765-21switchtime12:30:290
134491510,5ptp4l0-21swapper/007:06:490
134491510,4ptp4l0-21swapper/107:58:321
134491510,3ptp4l1317-21runrttasks09:15:181
134491510,3ptp4l0-21swapper/307:26:283
37499507,6cyclictest0-21swapper/212:00:262
37499505,11cyclictest0-21swapper/211:35:142
37499504,6cyclictest0-21swapper/210:45:172
37499504,6cyclictest0-21swapper/209:55:212
37499504,6cyclictest0-21swapper/209:45:232
37499503,6cyclictest0-21swapper/209:00:262
37499503,11cyclictest0-21swapper/211:25:262
37499503,11cyclictest0-21swapper/209:10:182
37499502,6cyclictest0-21swapper/210:54:582
37499502,6cyclictest0-21swapper/208:35:172
37499502,6cyclictest0-21swapper/207:40:182
37299504,17cyclictest17091-21sed07:45:170
134491500,4ptp4l0-21swapper/112:08:361
134491500,4ptp4l0-21swapper/108:44:211
134491500,4ptp4l0-21swapper/108:34:271
134491500,4ptp4l0-21swapper/108:19:331
37499494,11cyclictest0-21swapper/210:25:192
37499494,10cyclictest0-21swapper/211:00:132
37499493,6cyclictest0-21swapper/210:35:212
37499493,6cyclictest0-21swapper/210:00:152
37499493,6cyclictest0-21swapper/208:30:142
37499493,13cyclictest0-21swapper/211:50:172
37499492,7cyclictest0-21swapper/210:30:462
37499492,7cyclictest0-21swapper/210:20:282
37499492,6cyclictest0-21swapper/208:55:122
37499492,6cyclictest0-21swapper/208:55:122
37299498,6cyclictest0-21swapper/012:25:220
37299494,12cyclictest27867-21users11:35:300
134491490,5ptp4l0-21swapper/112:01:331
134491490,4ptp4l0-21swapper/311:45:573
134491490,4ptp4l0-21swapper/111:50:411
134491490,4ptp4l0-21swapper/109:52:051
37499481,6cyclictest33-21ksoftirqd/207:20:142
37499481,5cyclictest33-21ksoftirqd/209:30:142
37299488,6cyclictest0-21swapper/009:30:240
37299482,7cyclictest134491ptp4l10:43:150
134491480,3ptp4l37399cyclictest07:10:371
134491480,3ptp4l0-21swapper/112:35:271
134491480,3ptp4l0-21swapper/109:38:171
37499474,10cyclictest0-21swapper/207:55:182
37499473,6cyclictest33-21ksoftirqd/209:25:002
37499472,11cyclictest0-21swapper/212:30:182
37299479,6cyclictest0-21swapper/007:20:160
37299477,7cyclictest0-21swapper/011:48:160
134491470,5ptp4l0-21swapper/109:55:131
134491470,4ptp4l0-21swapper/311:41:043
134491470,3ptp4l0-21swapper/308:16:413
37499462,6cyclictest0-21swapper/211:09:542
37499462,6cyclictest0-21swapper/208:52:582
37499462,4cyclictest0-21swapper/207:51:362
37499462,11cyclictest0-21swapper/208:12:062
37299467,6cyclictest0-21swapper/008:15:220
37299463,7cyclictest19253-21apt-get11:20:110
134491460,5ptp4l0-21swapper/307:35:253
134491460,4ptp4l0-21swapper/308:27:083
134491460,3ptp4l0-21swapper/112:16:071
134491460,3ptp4l0-21swapper/108:12:531
37499454,5cyclictest0-21swapper/208:47:422
37499452,6cyclictest33-21ksoftirqd/212:35:202
37499452,5cyclictest33-21ksoftirqd/208:44:262
37499452,10cyclictest0-21swapper/211:55:182
37299457,6cyclictest0-21swapper/008:13:530
37299456,6cyclictest0-21swapper/011:30:250
134491450,4ptp4l0-21swapper/107:15:461
37499444,7cyclictest33-21ksoftirqd/211:45:012
37499441,6cyclictest0-21swapper/209:50:282
37299445,10cyclictest0-21swapper/009:51:140
134491440,5ptp4l0-21swapper/210:10:132
134491440,4ptp4l0-21swapper/111:12:041
134491440,4ptp4l0-21swapper/110:39:201
134491440,4ptp4l0-21swapper/008:30:260
134491440,3ptp4l0-21swapper/112:11:081
134491440,3ptp4l0-21swapper/111:20:471
134491440,3ptp4l0-21swapper/011:10:320
134491440,3ptp4l0-21swapper/007:50:310
37499434,5cyclictest17837-21meminfo12:25:212
37499433,6cyclictest0-21swapper/212:10:222
37499432,6cyclictest0-21swapper/211:15:392
37499430,6cyclictest1394-21sed08:20:212
37299430,7cyclictest17884-21ntpq10:05:230
134491430,9ptp4l0-21swapper/311:14:463
134491430,5ptp4l10691-21memory07:30:211
134491430,4ptp4l5382-21apt-get12:00:120
134491430,4ptp4l0-21swapper/111:46:321
134491430,4ptp4l0-21swapper/110:13:561
134491430,3ptp4l16790-21apt-get08:55:120
134491430,3ptp4l16790-21apt-get08:55:120
134491430,3ptp4l0-21swapper/309:32:353
37499423,11cyclictest0-21swapper/210:05:272
37499422,6cyclictest0-21swapper/208:15:202
37499422,11cyclictest0-21swapper/212:06:422
37499420,7cyclictest33-21ksoftirqd/211:20:142
37299422,9cyclictest0-21swapper/008:52:370
134691420,11getstats0-21swapper/108:59:281
134691420,11getstats0-21swapper/108:59:281
134491420,5ptp4l28542-21/usr/sbin/munin10:30:183
134491420,5ptp4l19536-21hddtemp_smartct09:00:160
134491420,5ptp4l0-21swapper/112:20:211
134491420,5ptp4l0-21swapper/011:55:200
134491420,4ptp4l0-21swapper/111:58:541
134491420,4ptp4l0-21swapper/111:26:201
134491420,4ptp4l0-21swapper/110:02:511
134491420,4ptp4l0-21swapper/107:40:581
134491420,4ptp4l0-21swapper/009:39:320
134491420,3ptp4l19398-21apt-get12:30:141
134491420,3ptp4l0-21swapper/109:03:161
37299414,7cyclictest22358-21memory09:05:210
37299412,7cyclictest24767-21ls10:20:210
134691410,10getstats0-21swapper/110:45:201
134691410,10getstats0-21swapper/109:34:201
134491410,5ptp4l0-21swapper/307:15:133
134491410,5ptp4l0-21swapper/110:30:141
134491410,5ptp4l0-21swapper/010:25:150
134491410,5ptp4l0-21swapper/008:35:270
134491410,5ptp4l0-21swapper/008:05:290
134491410,5ptp4l0-21swapper/008:00:230
134491410,4ptp4l4252-21ntp_states10:45:240
134491410,4ptp4l27150-21memory11:35:221
134491410,4ptp4l0-21swapper/311:37:253
134491410,4ptp4l0-21swapper/111:43:301
134491410,4ptp4l0-21swapper/108:53:171
134491410,4ptp4l0-21swapper/011:15:150
134491410,4ptp4l0-21swapper/008:29:270
134491410,3ptp4l7878-21df_inode09:45:130
134491410,3ptp4l6273-21irqstats10:50:200
134491410,3ptp4l11987-21apt-get08:45:121
134491410,1ptp4l111rcuc/010:00:190
375994035,3cyclictest41-21ksoftirqd/307:15:003
37499402,7cyclictest0-21swapper/210:43:582
37299407,5cyclictest0-21swapper/012:35:150
37299405,7cyclictest0-21swapper/010:37:390
37299405,6cyclictest11645-21users12:10:280
37299403,14cyclictest0-21swapper/012:15:150
372994010,6cyclictest9-21ksoftirqd/009:20:280
134691400,10getstats0-21swapper/112:29:321
134491400,5ptp4l21798-21df_abs11:25:140
134491400,5ptp4l0-21swapper/310:00:183
134491400,5ptp4l0-21swapper/110:55:221
134491400,5ptp4l0-21swapper/109:05:211
134491400,5ptp4l0-21swapper/009:59:070
134491400,4ptp4l16868-21/usr/sbin/munin10:05:143
134491400,4ptp4l13453-21ntp_states11:05:230
134491400,4ptp4l12342-21apt-get11:05:131
134491400,4ptp4l11254-21ps11:00:251
134491400,4ptp4l10049-21diskstats07:30:150
134491400,4ptp4l0-21swapper/311:58:083
134491400,4ptp4l0-21swapper/310:41:233
134491400,4ptp4l0-21swapper/310:38:113
134491400,4ptp4l0-21swapper/307:40:213
134491400,4ptp4l0-21swapper/307:33:383
134491400,4ptp4l0-21swapper/307:20:143
134491400,4ptp4l0-21swapper/108:22:391
134491400,4ptp4l0-21swapper/012:20:150
134491400,4ptp4l0-21swapper/007:35:130
134491400,4ptp4l0-21swapper/007:29:420
134491400,3ptp4l7889-21df12:05:130
134491400,3ptp4l25813-21apt-get10:25:011
134491400,3ptp4l22496-21ps07:55:250
372993934,3cyclictest9-21ksoftirqd/008:45:110
134491390,7ptp4l0-21swapper/108:04:061
134491390,5ptp4l0-21swapper/312:18:413
134491390,5ptp4l0-21swapper/310:24:403
134491390,5ptp4l0-21swapper/308:20:253
134491390,5ptp4l0-21swapper/308:04:333
134491390,5ptp4l0-21swapper/109:25:131
134491390,5ptp4l0-21swapper/109:25:131
134491390,5ptp4l0-21swapper/107:27:061
134491390,4ptp4l9075-21ls09:45:253
134491390,4ptp4l3936-21/usr/sbin/munin07:15:230
134491390,4ptp4l0-21swapper/312:08:143
134491390,4ptp4l0-21swapper/312:00:163
134491390,4ptp4l0-21swapper/311:51:433
134491390,4ptp4l0-21swapper/311:02:423
134491390,4ptp4l0-21swapper/310:59:343
134491390,4ptp4l0-21swapper/310:46:143
134491390,4ptp4l0-21swapper/307:49:133
134491390,4ptp4l0-21swapper/111:20:001
134491390,4ptp4l0-21swapper/110:50:211
134491390,4ptp4l0-21swapper/110:20:141
134491390,4ptp4l0-21swapper/110:17:441
134491390,4ptp4l0-21swapper/109:49:111
134491390,4ptp4l0-21swapper/010:10:160
134491390,4ptp4l0-21swapper/009:40:190
134491390,4ptp4l0-21swapper/009:15:020
134491390,4ptp4l0-21swapper/008:20:220
134491390,3ptp4l41-21ksoftirqd/311:16:463
134491390,3ptp4l0-21swapper/312:22:453
134491390,3ptp4l0-21swapper/308:52:093
134491390,3ptp4l0-21swapper/009:14:090
375993833,3cyclictest41-21ksoftirqd/309:05:003
134491380,4ptp4l0-21swapper/312:27:393
134491380,4ptp4l0-21swapper/311:23:373
134491380,4ptp4l0-21swapper/310:25:243
134491380,4ptp4l0-21swapper/310:10:183
134491380,4ptp4l0-21swapper/309:56:513
134491380,4ptp4l0-21swapper/309:10:193
134491380,4ptp4l0-21swapper/308:10:193
134491380,4ptp4l0-21swapper/308:05:303
134491380,4ptp4l0-21swapper/307:56:563
134491380,4ptp4l0-21swapper/307:51:053
134491380,4ptp4l0-21swapper/211:49:102
134491380,4ptp4l0-21swapper/007:40:150
134491380,3ptp4l0-21swapper/311:05:153
134491380,3ptp4l0-21swapper/309:38:073
375993733,3cyclictest41-21ksoftirqd/309:05:273
375993731,4cyclictest41-21ksoftirqd/312:35:343
375993731,3cyclictest41-21ksoftirqd/308:30:113
134491370,4ptp4l0-21swapper/309:25:183
134491370,4ptp4l0-21swapper/309:25:183
134491370,4ptp4l0-21swapper/309:20:173
134491370,3ptp4l0-21swapper/312:32:223
134491370,3ptp4l0-21swapper/311:27:053
134491370,3ptp4l0-21swapper/310:52:373
134491370,3ptp4l0-21swapper/309:17:063
375993631,3cyclictest41-21ksoftirqd/308:55:193
375993631,3cyclictest41-21ksoftirqd/308:55:193
375993630,3cyclictest41-21ksoftirqd/308:45:003
134491360,4ptp4l0-21swapper/312:10:043
134491360,3ptp4l0-21swapper/310:18:303
134491350,5ptp4l0-21swapper/308:37:403
134491350,3ptp4l0-21swapper/309:42:173
134491350,3ptp4l0-21swapper/308:46:293
134491340,3ptp4l0-21swapper/311:30:523
375992924,3cyclictest41-21ksoftirqd/309:50:203
3145522620,2sleep30-21swapper/307:05:223
304922235,11sleep20-21swapper/207:05:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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