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2026-08-10 - 17:15
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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 Aug 10, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2494221430,5sleep13260199cyclictest09:10:271
32601996421,4cyclictest25-21ksoftirqd/112:38:011
32601996220,7cyclictest25-21ksoftirqd/108:24:021
134491620,4ptp4l0-21swapper/007:20:250
134491610,5ptp4l0-21swapper/109:20:281
134491610,5ptp4l0-21swapper/010:35:060
134491610,4ptp4l12642-21irqstats07:35:201
32601996023,5cyclictest25-21ksoftirqd/112:10:331
32601995913,4cyclictest25-21ksoftirqd/110:56:141
134491590,4ptp4l0-21swapper/011:25:100
32601995818,4cyclictest25-21ksoftirqd/109:48:551
134491580,4ptp4l0-21swapper/109:35:271
32601995720,7cyclictest25-21ksoftirqd/107:42:581
134491570,4ptp4l10651-21irqstats09:50:202
134491570,4ptp4l0-21swapper/209:10:162
134491570,4ptp4l0-21swapper/110:43:401
134491570,3ptp4l0-21swapper/210:47:012
134491570,3ptp4l0-21swapper/010:05:230
134491570,3ptp4l0-21swapper/008:30:120
32600995625,3cyclictest9-21ksoftirqd/012:10:160
134491560,3ptp4l868-21iostat09:30:190
134491560,2ptp4l0-21swapper/009:40:200
32601995531,5cyclictest25-21ksoftirqd/111:05:191
3260099556,3cyclictest14477-21dump-pmu-power12:20:000
134491550,4ptp4l0-21swapper/309:55:473
134491550,4ptp4l0-21swapper/107:07:141
134491550,2ptp4l21243-21sshd11:24:363
32601995433,3cyclictest25-21ksoftirqd/110:50:151
32600995426,4cyclictest9-21ksoftirqd/007:45:170
32600995421,4cyclictest9-21ksoftirqd/012:30:000
134491540,9ptp4l0-21swapper/211:15:152
134491540,4ptp4l0-21swapper/111:33:491
32601995323,5cyclictest25-21ksoftirqd/108:19:131
32600995315,4cyclictest8772-21kworker/0:208:44:440
32600995315,4cyclictest8772-21kworker/0:208:44:440
134491530,4ptp4l0-21swapper/307:30:153
134491530,4ptp4l0-21swapper/307:30:153
134491530,4ptp4l0-21swapper/111:16:261
134491530,25ptp4l41-21ksoftirqd/311:33:503
121372530,5sleep30-21swapper/308:45:133
32601995214,7cyclictest25-21ksoftirqd/111:35:281
32600995218,4cyclictest16610-21kworker/0:212:02:380
134491520,4ptp4l0-21swapper/210:50:292
134491520,3ptp4l0-21swapper/212:30:202
134491520,3ptp4l0-21swapper/008:47:560
32601995121,10cyclictest25-21ksoftirqd/109:05:181
134491510,4ptp4l0-21swapper/111:43:111
134491510,4ptp4l0-21swapper/111:23:111
134491510,4ptp4l0-21swapper/108:09:441
134491510,4ptp4l0-21swapper/012:23:480
134491510,4ptp4l0-21swapper/011:56:300
134491510,4ptp4l0-21swapper/011:56:300
134491510,4ptp4l0-21swapper/010:48:210
134491510,2ptp4l0-21swapper/107:58:571
134491510,10ptp4l0-21swapper/010:24:350
64362500,5sleep20-21swapper/212:00:262
32600995010,9cyclictest9-21ksoftirqd/009:45:140
134491500,4ptp4l0-21swapper/312:08:163
134491500,4ptp4l0-21swapper/211:11:112
134491500,4ptp4l0-21swapper/012:05:410
134491500,4ptp4l0-21swapper/010:55:570
134491500,4ptp4l0-21swapper/008:13:590
134491500,3ptp4l0-21swapper/212:35:372
134491500,3ptp4l0-21swapper/211:20:242
134491500,3ptp4l0-21swapper/112:29:001
134491500,3ptp4l0-21swapper/108:26:291
32601994916,6cyclictest25-21ksoftirqd/111:55:001
32601994916,11cyclictest25-21ksoftirqd/109:30:191
3260099494,7cyclictest9-21ksoftirqd/008:50:200
32600994923,3cyclictest9-21ksoftirqd/012:35:160
32600994919,4cyclictest9-21ksoftirqd/010:50:290
134491490,4ptp4l0-21swapper/111:49:091
134491490,4ptp4l0-21swapper/109:04:291
134491490,4ptp4l0-21swapper/009:17:170
134491490,3ptp4l3260399cyclictest10:07:043
134491490,3ptp4l2432-21chrt11:51:050
134491490,3ptp4l0-21swapper/107:45:151
3260199485,4cyclictest25-21ksoftirqd/107:15:001
3260099484,5cyclictest121rcu_preempt10:19:590
32600994818,3cyclictest9-21ksoftirqd/007:40:260
134491480,9ptp4l32730-21apt-get09:30:132
134491480,4ptp4l0-21swapper/311:13:473
134491480,4ptp4l0-21swapper/310:00:043
134491480,4ptp4l0-21swapper/110:37:581
134491480,4ptp4l0-21swapper/007:33:050
134491480,4ptp4l0-21swapper/007:33:050
134491480,3ptp4l0-21swapper/212:22:402
134491480,3ptp4l0-21swapper/211:05:382
134491480,3ptp4l0-21swapper/208:20:242
134491480,3ptp4l0-21swapper/208:10:052
134491480,3ptp4l0-21swapper/109:25:061
134491480,2ptp4l121rcu_preempt09:00:203
32603994733,11cyclictest41-21ksoftirqd/308:30:123
32601994715,6cyclictest25-21ksoftirqd/111:25:141
32601994714,2cyclictest121rcu_preempt10:45:211
3260099471,8cyclictest9-21ksoftirqd/008:25:180
32600994714,3cyclictest9-21ksoftirqd/007:50:250
134491470,4ptp4l0-21swapper/307:59:133
134491470,4ptp4l0-21swapper/109:53:131
134491470,4ptp4l0-21swapper/009:57:060
134491470,4ptp4l0-21swapper/009:09:370
134491470,4ptp4l0-21swapper/008:36:340
3260199469,6cyclictest25-21ksoftirqd/107:20:211
32601994631,4cyclictest25-21ksoftirqd/112:17:271
32601994612,3cyclictest121rcu_preempt10:25:261
32600994621,3cyclictest9-21ksoftirqd/010:40:250
32600994616,3cyclictest9-21ksoftirqd/007:15:180
134491460,6ptp4l31835-21ls07:05:270
134491460,4ptp4l0-21swapper/211:28:302
134491460,3ptp4l401ktimersoftd/312:30:203
3260399452,41cyclictest0-21swapper/310:42:383
3260199454,3cyclictest121rcu_preempt08:45:271
32601994520,4cyclictest25-21ksoftirqd/108:55:231
32601994512,6cyclictest25-21ksoftirqd/110:00:181
3260099454,3cyclictest121rcu_preempt07:15:000
3260099454,2cyclictest121rcu_preempt07:40:000
3260099452,2cyclictest0-21swapper/009:20:180
32600994516,6cyclictest9-21ksoftirqd/008:20:000
134491450,5ptp4l0-21swapper/010:10:120
134491450,4ptp4l0-21swapper/312:12:043
134491450,3ptp4l401ktimersoftd/312:39:263
134491450,3ptp4l0-21swapper/007:55:060
134491450,10ptp4l0-21swapper/307:28:143
134491450,10ptp4l0-21swapper/307:28:143
32601994425,3cyclictest25-21ksoftirqd/110:24:291
3260199442,3cyclictest25-21ksoftirqd/111:59:321
3260199442,3cyclictest25-21ksoftirqd/111:59:321
32601994410,7cyclictest25-21ksoftirqd/112:09:581
3260199440,2cyclictest134491ptp4l08:45:001
3260199440,2cyclictest134491ptp4l08:45:001
32600994430,4cyclictest9-21ksoftirqd/010:30:240
32600994428,3cyclictest9-21ksoftirqd/011:13:590
32600994413,4cyclictest9-21ksoftirqd/011:00:240
32600994413,4cyclictest9-21ksoftirqd/011:00:240
32600994410,7cyclictest9-21ksoftirqd/010:00:310
134491440,3ptp4l121rcu_preempt11:05:393
134491440,3ptp4l0-21swapper/210:37:222
134491440,10ptp4l0-21swapper/011:32:130
32601994337,3cyclictest25-21ksoftirqd/110:10:011
3260199431,2cyclictest121rcu_preempt11:10:121
3260199430,2cyclictest121rcu_preempt09:15:211
3260099431,3cyclictest28783-21tune2fs11:40:160
134491430,9ptp4l0-21swapper/311:00:413
134491430,9ptp4l0-21swapper/311:00:413
134491430,9ptp4l0-21swapper/008:20:050
134491430,4ptp4l0-21swapper/210:18:312
134491430,4ptp4l0-21swapper/208:34:122
134491430,3ptp4l401ktimersoftd/309:35:253
32602994237,3cyclictest33-21ksoftirqd/209:20:002
32602994237,3cyclictest33-21ksoftirqd/208:00:002
3260199423,8cyclictest25-21ksoftirqd/111:00:251
3260199423,8cyclictest25-21ksoftirqd/111:00:241
32601994237,3cyclictest25-21ksoftirqd/108:40:001
32601994233,3cyclictest25-21ksoftirqd/108:10:161
32601994211,9cyclictest25-21ksoftirqd/112:00:181
32601994211,6cyclictest25-21ksoftirqd/110:10:171
32600994231,3cyclictest9-21ksoftirqd/008:55:220
32600994211,4cyclictest9-21ksoftirqd/007:25:140
32600994211,4cyclictest9-21ksoftirqd/007:25:140
134491420,5ptp4l0-21swapper/012:30:150
134491420,5ptp4l0-21swapper/011:15:230
134491420,4ptp4l8724-21ntp_states12:05:222
134491420,4ptp4l31854-21ntp_states11:45:232
134491420,4ptp4l23946-21hddtemp_smartct09:10:170
134491420,4ptp4l0-21swapper/310:48:263
134491420,3ptp4l21213-21apt-get09:05:113
134491420,3ptp4l0-21swapper/307:16:503
32601994135,3cyclictest25-21ksoftirqd/108:30:291
32601994135,3cyclictest25-21ksoftirqd/107:25:261
32601994135,3cyclictest25-21ksoftirqd/107:25:261
32601994128,3cyclictest25-21ksoftirqd/109:56:311
32601994124,6cyclictest25-21ksoftirqd/112:24:541
32600994110,3cyclictest9-21ksoftirqd/009:01:180
134491410,5ptp4l0-21swapper/312:25:133
134491410,5ptp4l0-21swapper/307:50:213
134491410,5ptp4l0-21swapper/108:50:051
134491410,5ptp4l0-21swapper/008:00:130
134491410,4ptp4l2995-21apt-get11:55:142
134491410,4ptp4l2995-21apt-get11:55:142
134491410,4ptp4l29557-21ntp_states11:40:242
134491410,4ptp4l26695-21iostat_ios11:35:180
134491410,4ptp4l0-21swapper/312:00:193
134491410,4ptp4l0-21swapper/311:35:173
134491410,4ptp4l0-21swapper/009:50:120
134491410,3ptp4l31675-21ls11:45:200
134491410,3ptp4l25981-21apt-get10:25:132
134491410,3ptp4l12414-21apt-get12:15:103
134491410,3ptp4l0-21swapper/210:10:262
134491410,2ptp4l4415-21ls11:55:273
134491410,2ptp4l4415-21ls11:55:263
32601994035,3cyclictest25-21ksoftirqd/108:00:021
32601994035,3cyclictest25-21ksoftirqd/107:30:131
32601994035,3cyclictest25-21ksoftirqd/107:30:131
32601994034,3cyclictest25-21ksoftirqd/110:30:131
32601994034,3cyclictest25-21ksoftirqd/107:15:241
32601994025,4cyclictest25-21ksoftirqd/112:30:181
3260099403,3cyclictest16610-21kworker/0:211:23:210
3260099401,2cyclictest121rcu_preempt08:05:190
32600994011,4cyclictest23258-21kworker/0:109:39:060
3260099400,3cyclictest121rcu_preempt11:05:010
134491400,5ptp4l3260399cyclictest08:55:253
134491400,4ptp4l5856-21memory07:20:212
134491400,4ptp4l10067-21diskstats11:00:152
134491400,4ptp4l10067-21diskstats11:00:152
134491400,4ptp4l0-21swapper/312:22:213
134491400,4ptp4l0-21swapper/311:50:193
134491400,4ptp4l0-21swapper/311:40:263
134491400,4ptp4l0-21swapper/311:16:093
134491400,4ptp4l0-21swapper/309:50:213
134491400,4ptp4l0-21swapper/209:55:232
134491400,4ptp4l0-21swapper/209:25:192
134491400,3ptp4l5145-21apt-get10:50:133
134491400,3ptp4l26125-21apt-get11:35:132
134491400,3ptp4l14111-21apt-get07:40:112
134491400,3ptp4l0-21swapper/310:15:173
134491400,2ptp4l121rcu_preempt10:33:313
32602993933,3cyclictest33-21ksoftirqd/208:45:182
32601993934,3cyclictest25-21ksoftirqd/107:50:251
32601993933,3cyclictest25-21ksoftirqd/110:15:171
32601993925,3cyclictest25-21ksoftirqd/109:40:101
134491390,5ptp4l30950-21/usr/sbin/munin09:25:170
134491390,5ptp4l1512-21seq08:20:233
134491390,5ptp4l0-21swapper/307:20:193
134491390,4ptp4l23667-21/usr/sbin/munin10:20:213
134491390,4ptp4l18137-21awk12:25:222
134491390,4ptp4l0-21swapper/311:45:183
134491390,4ptp4l0-21swapper/310:25:293
134491390,4ptp4l0-21swapper/309:49:483
134491390,4ptp4l0-21swapper/309:25:253
134491390,4ptp4l0-21swapper/308:50:253
134491390,4ptp4l0-21swapper/308:05:133
134491390,4ptp4l0-21swapper/212:15:162
134491390,4ptp4l0-21swapper/210:31:152
134491390,4ptp4l0-21swapper/208:27:362
134491390,4ptp4l0-21swapper/010:25:110
134491390,3ptp4l444-21apt-get10:40:122
134491390,3ptp4l29246-21ntp_states09:20:232
134491390,3ptp4l11789-21users12:10:282
134491390,3ptp4l0-21swapper/307:45:193
32603993831,4cyclictest41-21ksoftirqd/307:10:103
32602993833,3cyclictest33-21ksoftirqd/208:00:202
134491380,4ptp4l8846-21sed09:45:282
134491380,4ptp4l28108-21cat08:10:013
134491380,4ptp4l23809-21sed09:10:153
134491380,4ptp4l21199-21/usr/sbin/munin09:05:122
134491380,4ptp4l0-21swapper/311:28:333
134491380,4ptp4l0-21swapper/310:55:113
134491380,4ptp4l0-21swapper/310:35:153
134491380,4ptp4l0-21swapper/308:35:193
134491380,4ptp4l0-21swapper/308:25:173
134491380,4ptp4l0-21swapper/307:35:233
134491380,4ptp4l0-21swapper/211:50:262
134491380,4ptp4l0-21swapper/210:55:152
134491380,4ptp4l0-21swapper/210:07:012
134491380,4ptp4l0-21swapper/209:41:012
134491380,4ptp4l0-21swapper/209:35:012
134491380,4ptp4l0-21swapper/209:01:382
134491380,4ptp4l0-21swapper/208:55:292
134491380,4ptp4l0-21swapper/208:50:432
134491380,4ptp4l0-21swapper/208:40:112
134491380,4ptp4l0-21swapper/208:40:112
134491380,4ptp4l0-21swapper/208:09:102
134491380,4ptp4l0-21swapper/207:54:532
134491380,4ptp4l0-21swapper/207:45:192
134491380,4ptp4l0-21swapper/207:35:232
134491380,4ptp4l0-21swapper/207:30:432
134491380,4ptp4l0-21swapper/207:30:432
134491380,4ptp4l0-21swapper/207:15:162
134491380,4ptp4l0-21swapper/207:10:272
134491380,3ptp4l0-21swapper/310:10:263
134491380,3ptp4l0-21swapper/211:30:072
134491380,3ptp4l0-21swapper/210:20:592
134491380,3ptp4l0-21swapper/210:00:122
32602993731,4cyclictest33-21ksoftirqd/207:27:372
32602993731,4cyclictest33-21ksoftirqd/207:27:372
134491370,4ptp4l0-21swapper/309:41:033
134491370,4ptp4l0-21swapper/309:30:203
134491370,4ptp4l0-21swapper/309:20:203
134491370,4ptp4l0-21swapper/309:16:553
134491370,4ptp4l0-21swapper/308:15:333
134491370,4ptp4l0-21swapper/308:02:333
134491370,4ptp4l0-21swapper/307:40:183
134491370,4ptp4l0-21swapper/208:18:172
134491370,3ptp4l0-21swapper/308:40:253
134491370,3ptp4l0-21swapper/308:40:253
134491370,3ptp4l0-21swapper/208:35:272
302712225,10sleep30-21swapper/307:05:133
311162213,12sleep231218-21meminfo07:05:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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