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2026-04-13 - 20:13
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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 Mon Apr 13, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1086222210,7sleep210830-21sh07:09:502
1621521950,5sleep116217-21sh07:08:001
2642121820,6sleep22013599cyclictest07:10:112
873221800,7sleep08730-21od07:07:230
1564021790,6sleep30-21swapper/307:08:593
989521680,6sleep32013699cyclictest07:10:333
1903721640,6sleep02013399cyclictest10:35:240
134491670,3ptp4l8959-21df_inode10:15:161
20135996533,4cyclictest33-21ksoftirqd/212:25:252
20135996529,6cyclictest33-21ksoftirqd/209:55:192
20135996525,9cyclictest33-21ksoftirqd/207:39:262
20135996433,5cyclictest33-21ksoftirqd/209:50:222
20135996429,7cyclictest33-21ksoftirqd/211:30:222
20135996335,6cyclictest33-21ksoftirqd/210:15:162
20135996328,6cyclictest33-21ksoftirqd/209:05:002
20135996325,8cyclictest33-21ksoftirqd/209:10:482
20135996325,5cyclictest33-21ksoftirqd/210:05:202
20135996324,6cyclictest33-21ksoftirqd/210:45:242
20135996229,6cyclictest33-21ksoftirqd/212:30:162
20135996227,8cyclictest33-21ksoftirqd/208:51:232
20135996223,8cyclictest33-21ksoftirqd/210:55:392
20135996129,4cyclictest33-21ksoftirqd/208:20:222
20135996127,4cyclictest33-21ksoftirqd/209:35:132
20135996127,4cyclictest33-21ksoftirqd/209:25:212
20135996124,8cyclictest33-21ksoftirqd/211:19:102
134491610,4ptp4l0-21swapper/307:46:233
20135996030,7cyclictest33-21ksoftirqd/207:55:002
20135996028,4cyclictest33-21ksoftirqd/212:00:262
20135996026,6cyclictest33-21ksoftirqd/207:20:192
20135996026,5cyclictest33-21ksoftirqd/210:30:262
20135996024,7cyclictest33-21ksoftirqd/210:41:432
20135996024,7cyclictest33-21ksoftirqd/207:45:392
20135995921,8cyclictest33-21ksoftirqd/212:39:482
20135995919,8cyclictest33-21ksoftirqd/210:23:292
20135995826,6cyclictest33-21ksoftirqd/211:25:162
20135995825,3cyclictest33-21ksoftirqd/211:20:192
20135995823,7cyclictest33-21ksoftirqd/211:10:202
20135995821,8cyclictest33-21ksoftirqd/208:10:432
134491580,3ptp4l0-21swapper/308:41:353
20135995726,5cyclictest33-21ksoftirqd/210:35:172
20135995721,9cyclictest33-21ksoftirqd/209:15:252
20135995721,9cyclictest33-21ksoftirqd/209:15:252
20135995721,6cyclictest33-21ksoftirqd/207:15:182
134491570,4ptp4l0-21swapper/110:12:211
134491570,4ptp4l0-21swapper/007:30:200
134491570,3ptp4l11141-21od07:10:341
20135995628,6cyclictest33-21ksoftirqd/212:10:122
20135995624,5cyclictest33-21ksoftirqd/208:55:162
20135995624,3cyclictest33-21ksoftirqd/207:57:162
20135995618,8cyclictest33-21ksoftirqd/208:31:012
134491560,4ptp4l0-21swapper/208:05:162
134491560,3ptp4l0-21swapper/007:13:290
20135995524,5cyclictest33-21ksoftirqd/212:15:272
134491550,4ptp4l0-21swapper/311:06:093
134491550,4ptp4l0-21swapper/007:20:140
134491550,3ptp4l0-21swapper/008:15:230
20135995427,6cyclictest33-21ksoftirqd/207:44:522
20135995426,7cyclictest33-21ksoftirqd/211:35:272
20135995424,9cyclictest33-21ksoftirqd/211:05:142
20135995421,3cyclictest33-21ksoftirqd/209:50:002
20135995420,4cyclictest33-21ksoftirqd/210:00:502
20135995418,14cyclictest33-21ksoftirqd/208:35:502
134491540,4ptp4l0-21swapper/307:55:143
134491540,4ptp4l0-21swapper/110:56:591
134491540,4ptp4l0-21swapper/011:23:320
2013599535,7cyclictest33-21ksoftirqd/211:55:232
2013599533,7cyclictest0-21swapper/209:05:152
2013599533,3cyclictest33-21ksoftirqd/211:40:172
2013599533,3cyclictest33-21ksoftirqd/211:40:162
20135995323,7cyclictest33-21ksoftirqd/207:30:012
20135995320,6cyclictest33-21ksoftirqd/208:40:232
20135995318,4cyclictest33-21ksoftirqd/209:30:222
20135995317,5cyclictest33-21ksoftirqd/208:45:232
134491530,12ptp4l0-21swapper/011:59:200
20135995225,7cyclictest33-21ksoftirqd/211:45:252
134491520,3ptp4l0-21swapper/108:20:231
134491520,12ptp4l0-21swapper/310:43:333
20135995121,5cyclictest33-21ksoftirqd/212:20:192
20135995118,5cyclictest33-21ksoftirqd/209:20:152
20135995118,4cyclictest33-21ksoftirqd/208:00:252
2013599511,3cyclictest33-21ksoftirqd/212:05:262
134491510,4ptp4l0-21swapper/309:46:573
134491510,4ptp4l0-21swapper/307:16:053
134491510,4ptp4l0-21swapper/107:34:181
134491510,3ptp4l0-21swapper/309:40:263
134491510,3ptp4l0-21swapper/111:24:431
134491510,10ptp4l0-21swapper/308:23:003
2013599504,6cyclictest33-21ksoftirqd/209:44:522
2013599503,6cyclictest0-21swapper/210:25:212
134491500,4ptp4l0-21swapper/310:39:363
134491500,4ptp4l0-21swapper/112:29:471
134491500,4ptp4l0-21swapper/110:08:331
134491500,3ptp4l0-21swapper/109:38:571
134491500,3ptp4l0-21swapper/109:20:201
134491500,3ptp4l0-21swapper/010:19:160
2013599495,5cyclictest33-21ksoftirqd/207:30:232
2013599493,5cyclictest33-21ksoftirqd/208:15:232
2013599492,3cyclictest33-21ksoftirqd/210:10:262
2013599490,3cyclictest121rcu_preempt11:50:162
134491490,4ptp4l0-21swapper/312:22:523
134491490,4ptp4l0-21swapper/309:06:493
134491490,4ptp4l0-21swapper/208:28:572
134491490,4ptp4l0-21swapper/108:08:291
134491490,4ptp4l0-21swapper/011:06:210
134491490,4ptp4l0-21swapper/010:00:340
134491490,4ptp4l0-21swapper/007:28:100
134491490,3ptp4l0-21swapper/310:31:353
134491490,3ptp4l0-21swapper/108:30:461
2013599483,3cyclictest33-21ksoftirqd/210:50:502
134491480,4ptp4l0-21swapper/310:04:433
134491480,4ptp4l0-21swapper/309:22:593
134491480,3ptp4l0-21swapper/108:15:101
134491480,3ptp4l0-21swapper/107:40:481
134491470,4ptp4l0-21swapper/312:37:383
134491470,4ptp4l0-21swapper/311:39:183
134491470,4ptp4l0-21swapper/310:47:353
134491470,4ptp4l0-21swapper/310:05:533
134491470,4ptp4l0-21swapper/309:56:293
134491470,4ptp4l0-21swapper/307:35:553
134491470,4ptp4l0-21swapper/111:37:331
134491470,3ptp4l0-21swapper/308:25:363
134491460,8ptp4l0-21swapper/311:10:193
134491460,4ptp4l0-21swapper/112:10:361
134491460,4ptp4l0-21swapper/009:23:040
134491460,3ptp4l0-21swapper/011:51:210
134491460,10ptp4l0-21swapper/011:13:400
2013599452,2cyclictest121rcu_preempt11:04:502
134491450,4ptp4l0-21swapper/311:50:013
134491450,4ptp4l0-21swapper/308:54:353
134491450,4ptp4l0-21swapper/307:26:223
134491450,4ptp4l0-21swapper/109:13:431
134491450,4ptp4l0-21swapper/009:40:200
134491450,3ptp4l0-21swapper/111:07:351
134491450,3ptp4l0-21swapper/010:26:020
134491440,5ptp4l0-21swapper/310:50:113
134491440,4ptp4l0-21swapper/111:27:281
134491440,3ptp4l1754-21cron12:20:011
134491440,3ptp4l0-21swapper/112:03:521
134491430,9ptp4l0-21swapper/107:38:531
134491430,5ptp4l0-21swapper/009:50:120
134491430,4ptp4l20242-21apt-get10:40:130
134491430,4ptp4l19857-21apt-get09:30:130
134491430,4ptp4l18027-21apt-get11:45:121
134491430,4ptp4l0-21swapper/311:20:153
134491430,4ptp4l0-21swapper/310:26:143
134491430,4ptp4l0-21swapper/011:47:010
134491430,3ptp4l0-21swapper/311:18:193
134491430,3ptp4l0-21swapper/307:21:043
134491430,3ptp4l0-21swapper/008:05:350
134491430,2ptp4l0-21swapper/012:23:010
134491420,5ptp4l0-21swapper/009:05:180
134491420,4ptp4l27283-21df_inode09:45:150
134491420,4ptp4l15258-21apt-get11:40:023
134491420,4ptp4l15258-21apt-get11:40:023
134491420,4ptp4l0-21swapper/011:27:420
134491420,3ptp4l28929-21ls12:05:253
20136994135,3cyclictest41-21ksoftirqd/308:10:143
134491410,9ptp4l0-21swapper/008:14:230
134491410,5ptp4l32663-21/usr/sbin/munin09:55:220
134491410,5ptp4l23273-21ntp_states09:35:220
134491410,5ptp4l16742-21phc2sys-jitter10:30:261
134491410,5ptp4l0-21swapper/311:25:203
134491410,5ptp4l0-21swapper/110:40:141
134491410,5ptp4l0-21swapper/012:15:190
134491410,5ptp4l0-21swapper/007:35:290
134491410,4ptp4l6353-21memory07:50:200
134491410,4ptp4l4297-21diskstats11:15:131
134491410,4ptp4l3630-21apt-get10:05:010
134491410,4ptp4l28076-21iostat12:05:170
134491410,4ptp4l20960-21iostat_ios11:50:191
134491410,4ptp4l14114-21irqstats10:25:191
134491410,4ptp4l0-21swapper/309:25:343
134491410,4ptp4l0-21swapper/308:18:213
134491410,3ptp4l28553-21ls09:45:281
20133994035,3cyclictest9-21ksoftirqd/008:35:000
20133994034,4cyclictest9-21ksoftirqd/012:25:110
134491400,6ptp4l8377-21sshd12:30:441
134491400,6ptp4l0-21swapper/111:34:531
134491400,5ptp4l3505-21/usr/sbin/munin12:20:281
134491400,5ptp4l24179-21grep10:45:290
134491400,5ptp4l0-21swapper/311:34:333
134491400,5ptp4l0-21swapper/307:40:213
134491400,5ptp4l0-21swapper/110:20:241
134491400,5ptp4l0-21swapper/108:25:171
134491400,5ptp4l0-21swapper/107:50:141
134491400,5ptp4l0-21swapper/007:45:280
134491400,4ptp4l9480-21df_inode12:35:151
134491400,4ptp4l8646-21memory07:55:210
134491400,4ptp4l7238-21iostat12:30:180
134491400,4ptp4l29805-21apt-get12:10:120
134491400,4ptp4l0-21swapper/312:15:013
134491400,4ptp4l0-21swapper/112:09:201
134491400,4ptp4l0-21swapper/110:45:301
134491400,4ptp4l0-21swapper/109:05:221
134491400,4ptp4l0-21swapper/108:35:011
134491400,4ptp4l0-21swapper/108:10:231
134491400,4ptp4l0-21swapper/012:35:190
134491400,4ptp4l0-21swapper/012:01:460
134491400,4ptp4l0-21swapper/011:40:060
134491400,4ptp4l0-21swapper/011:40:050
134491400,4ptp4l0-21swapper/011:36:080
134491400,4ptp4l0-21swapper/010:58:490
134491400,4ptp4l0-21swapper/009:16:530
134491400,4ptp4l0-21swapper/009:16:530
134491400,4ptp4l0-21swapper/008:48:560
134491400,4ptp4l0-21swapper/008:36:430
134491400,4ptp4l0-21swapper/008:00:150
134491400,4ptp4l0-21swapper/007:15:240
134491400,3ptp4l5495-21ntp_states12:25:243
134491400,3ptp4l27719-21ntp_states08:35:233
134491400,3ptp4l2069-21meminfo08:50:211
134491400,3ptp4l15778-21df10:30:160
134491400,3ptp4l11015-21hddtemp_smartct09:10:160
134491400,3ptp4l0-21swapper/311:55:173
134491400,3ptp4l0-21swapper/011:34:200
134491400,3ptp4l0-21swapper/010:10:190
134491390,5ptp4l26210-21chrt09:41:051
134491390,4ptp4l9934-21find10:15:263
134491390,4ptp4l0-21swapper/312:32:203
134491390,4ptp4l0-21swapper/311:00:113
134491390,4ptp4l0-21swapper/309:54:263
134491390,4ptp4l0-21swapper/309:35:243
134491390,4ptp4l0-21swapper/309:10:053
134491390,4ptp4l0-21swapper/111:55:201
134491390,4ptp4l0-21swapper/111:03:021
134491390,4ptp4l0-21swapper/110:35:221
134491390,4ptp4l0-21swapper/110:02:581
134491390,4ptp4l0-21swapper/109:19:221
134491390,4ptp4l0-21swapper/109:19:221
134491390,4ptp4l0-21swapper/109:00:111
134491390,4ptp4l0-21swapper/107:25:151
134491390,4ptp4l0-21swapper/011:17:120
134491390,4ptp4l0-21swapper/011:02:200
134491390,4ptp4l0-21swapper/010:20:220
134491390,4ptp4l0-21swapper/009:25:160
134491390,4ptp4l0-21swapper/008:55:160
134491390,4ptp4l0-21swapper/008:20:130
134491390,3ptp4l3898-21hddtemp_smartct08:55:181
134491390,3ptp4l25137-21diskstats10:50:140
134491390,3ptp4l18737-21irqrtprio11:45:183
134491390,3ptp4l0-21swapper/308:55:503
134491390,3ptp4l0-21swapper/111:41:021
134491390,3ptp4l0-21swapper/111:41:021
134491390,3ptp4l0-21swapper/109:30:221
134491390,3ptp4l0-21swapper/107:46:081
134491380,4ptp4l0-21swapper/312:15:573
134491380,4ptp4l0-21swapper/312:02:203
134491380,4ptp4l0-21swapper/310:56:343
134491380,4ptp4l0-21swapper/310:20:143
134491380,4ptp4l0-21swapper/310:10:173
134491380,4ptp4l0-21swapper/308:48:323
134491380,4ptp4l0-21swapper/308:31:163
134491380,4ptp4l0-21swapper/308:00:193
134491380,4ptp4l0-21swapper/111:10:131
134491380,4ptp4l0-21swapper/109:50:141
134491380,4ptp4l0-21swapper/109:29:501
134491380,4ptp4l0-21swapper/107:55:241
134491380,4ptp4l0-21swapper/107:21:401
134491380,4ptp4l0-21swapper/107:15:111
134491380,4ptp4l0-21swapper/009:02:150
134491380,4ptp4l0-21swapper/008:50:200
134491380,4ptp4l0-21swapper/008:41:310
134491380,4ptp4l0-21swapper/007:40:410
134491380,3ptp4l5765-21/usr/sbin/munin09:00:273
134491380,3ptp4l0-21swapper/309:30:233
134491380,3ptp4l0-21swapper/110:50:011
134491380,3ptp4l0-21swapper/109:56:571
134491380,3ptp4l0-21swapper/008:25:160
134491370,4ptp4l0-21swapper/309:15:113
134491370,4ptp4l0-21swapper/309:15:113
134491370,4ptp4l0-21swapper/308:05:473
134491370,4ptp4l0-21swapper/307:51:513
134491370,4ptp4l0-21swapper/307:30:463
134491370,4ptp4l0-21swapper/108:45:091
134491370,3ptp4l0-21swapper/108:00:231
134491360,3ptp4l0-21swapper/108:41:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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