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2026-05-20 - 23:13
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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 highest latencies:
System rackdslot1.osadl.org (updated Wed May 20, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2042621430,4sleep21891499cyclictest10:40:192
2729121360,6sleep01891299cyclictest09:45:210
18915996733,5cyclictest41-21ksoftirqd/310:40:113
18915996432,4cyclictest41-21ksoftirqd/309:55:183
34542630,6sleep00-21swapper/012:25:120
18915996333,6cyclictest41-21ksoftirqd/309:35:193
18915996329,4cyclictest41-21ksoftirqd/308:05:143
18915996225,8cyclictest41-21ksoftirqd/312:35:223
134491620,4ptp4l26864-21memory07:25:201
18915996133,8cyclictest41-21ksoftirqd/307:25:163
18915996127,3cyclictest41-21ksoftirqd/309:20:173
18915996124,8cyclictest41-21ksoftirqd/311:00:283
18912996133,6cyclictest9-21ksoftirqd/011:10:140
18912996028,4cyclictest9-21ksoftirqd/008:40:010
18912996025,6cyclictest9-21ksoftirqd/008:14:590
208602590,4sleep20-21swapper/209:30:262
134491590,3ptp4l19515-21df09:30:131
18912995818,4cyclictest9-21ksoftirqd/012:30:240
18912995818,4cyclictest9-21ksoftirqd/012:30:240
134491580,4ptp4l0-21swapper/108:58:481
18915995722,7cyclictest41-21ksoftirqd/311:25:163
18915995722,7cyclictest41-21ksoftirqd/310:00:153
18915995719,6cyclictest41-21ksoftirqd/312:25:143
18915995715,3cyclictest23675-21date08:30:003
18912995722,6cyclictest9-21ksoftirqd/008:35:010
18915995623,8cyclictest41-21ksoftirqd/309:50:153
18912995626,4cyclictest9-21ksoftirqd/011:18:160
18912995624,6cyclictest9-21ksoftirqd/008:05:000
134491560,3ptp4l0-21swapper/110:00:511
134491560,2ptp4l32726-21ls07:40:001
134491560,10ptp4l0-21swapper/009:51:040
18915995520,6cyclictest41-21ksoftirqd/308:50:153
1891599550,7cyclictest41-21ksoftirqd/308:35:153
18912995520,4cyclictest9-21ksoftirqd/008:45:270
18912995516,9cyclictest9-21ksoftirqd/010:15:150
134491550,3ptp4l0-21swapper/110:08:171
134491550,3ptp4l0-21swapper/012:20:120
1891599545,7cyclictest41-21ksoftirqd/307:35:123
1891599545,10cyclictest41-21ksoftirqd/312:35:003
1891599545,10cyclictest41-21ksoftirqd/312:35:003
1891599544,7cyclictest41-21ksoftirqd/307:25:013
18915995432,7cyclictest41-21ksoftirqd/308:45:243
18915995420,9cyclictest41-21ksoftirqd/312:05:253
18912995423,4cyclictest9-21ksoftirqd/010:07:240
18912995423,4cyclictest9-21ksoftirqd/007:13:320
134491540,3ptp4l0-21swapper/010:55:170
1891599535,9cyclictest41-21ksoftirqd/308:20:183
1891599535,7cyclictest41-21ksoftirqd/312:20:113
1891599534,8cyclictest41-21ksoftirqd/310:45:133
1891599532,5cyclictest41-21ksoftirqd/308:15:193
18912995324,3cyclictest9-21ksoftirqd/010:23:240
18912995320,4cyclictest9-21ksoftirqd/010:11:580
134491530,4ptp4l0-21swapper/112:35:581
134491530,4ptp4l0-21swapper/107:59:031
1891599525,7cyclictest10731-21cat11:30:163
1891599525,3cyclictest121rcu_preempt09:28:293
1891599525,3cyclictest121rcu_preempt09:28:293
1891599524,7cyclictest41-21ksoftirqd/310:20:003
1891599522,6cyclictest41-21ksoftirqd/309:00:003
18912995226,7cyclictest9-21ksoftirqd/008:20:150
18912995224,6cyclictest9-21ksoftirqd/007:55:220
18912995220,4cyclictest9-21ksoftirqd/007:47:230
18912995219,4cyclictest9-21ksoftirqd/010:45:480
18912995217,4cyclictest9-21ksoftirqd/011:38:310
18912995217,4cyclictest9-21ksoftirqd/009:30:590
134491520,4ptp4l0-21swapper/210:10:362
134491520,4ptp4l0-21swapper/108:41:061
134491520,3ptp4l0-21swapper/109:35:271
134491520,10ptp4l16792-21df07:05:130
1891599515,8cyclictest41-21ksoftirqd/307:40:183
1891599515,7cyclictest41-21ksoftirqd/310:35:123
1891599515,7cyclictest41-21ksoftirqd/310:05:123
1891599514,7cyclictest41-21ksoftirqd/312:00:003
1891599514,7cyclictest41-21ksoftirqd/310:20:283
1891599514,3cyclictest41-21ksoftirqd/308:10:213
1891599513,8cyclictest41-21ksoftirqd/312:05:003
1891599512,7cyclictest41-21ksoftirqd/310:55:163
1891599512,7cyclictest0-21swapper/311:06:583
1891599512,5cyclictest41-21ksoftirqd/310:10:243
18915995124,7cyclictest41-21ksoftirqd/312:15:253
1891599511,6cyclictest41-21ksoftirqd/311:10:283
1891599510,7cyclictest41-21ksoftirqd/307:10:143
18912995121,5cyclictest9-21ksoftirqd/010:35:100
18912995121,3cyclictest9-21ksoftirqd/007:51:510
18912995121,3cyclictest9-21ksoftirqd/007:44:590
18912995117,4cyclictest9-21ksoftirqd/009:23:160
134491510,3ptp4l0-21swapper/112:21:301
1891599505,7cyclictest41-21ksoftirqd/309:10:263
1891599505,5cyclictest41-21ksoftirqd/309:50:003
1891599503,6cyclictest41-21ksoftirqd/311:50:143
1891599503,6cyclictest41-21ksoftirqd/309:30:253
1891599503,6cyclictest41-21ksoftirqd/307:45:213
1891599501,6cyclictest0-21swapper/307:55:093
1891599500,11cyclictest41-21ksoftirqd/310:50:173
18912995020,4cyclictest9-21ksoftirqd/011:25:510
18912995018,5cyclictest9-21ksoftirqd/010:30:130
18912995018,5cyclictest9-21ksoftirqd/008:56:080
18912995017,6cyclictest9-21ksoftirqd/011:30:210
18912995017,4cyclictest9-21ksoftirqd/008:06:010
18912995015,4cyclictest9-21ksoftirqd/011:50:310
134491500,5ptp4l0-21swapper/307:05:283
134491500,4ptp4l0-21swapper/211:55:162
134491500,4ptp4l0-21swapper/209:42:562
134491500,4ptp4l0-21swapper/107:19:411
134491500,4ptp4l0-21swapper/010:25:310
134491500,11ptp4l0-21swapper/108:00:221
1891599494,8cyclictest41-21ksoftirqd/308:00:263
1891599494,7cyclictest41-21ksoftirqd/311:45:253
1891599494,6cyclictest29376-21phc2sys07:30:233
1891599492,7cyclictest0-21swapper/310:25:173
1891599491,6cyclictest0-21swapper/311:23:513
18912994921,4cyclictest9-21ksoftirqd/011:45:450
18912994920,4cyclictest9-21ksoftirqd/011:10:000
18912994917,3cyclictest9-21ksoftirqd/012:16:580
18912994913,3cyclictest9-21ksoftirqd/008:15:220
18912994911,5cyclictest9-21ksoftirqd/009:55:190
134491490,4ptp4l0-21swapper/109:00:161
134491490,3ptp4l0-21swapper/212:10:592
134491490,3ptp4l0-21swapper/008:25:150
134491490,11ptp4l0-21swapper/210:21:322
1891599484,7cyclictest41-21ksoftirqd/311:35:133
1891599484,7cyclictest41-21ksoftirqd/310:30:123
1891599484,7cyclictest41-21ksoftirqd/308:30:163
1891599483,7cyclictest41-21ksoftirqd/309:40:253
1891599482,6cyclictest41-21ksoftirqd/309:00:163
18912994820,7cyclictest9-21ksoftirqd/008:51:380
18912994818,8cyclictest9-21ksoftirqd/008:40:190
18912994816,4cyclictest9-21ksoftirqd/010:01:270
18912994816,3cyclictest9-21ksoftirqd/007:28:080
18912994815,5cyclictest9-21ksoftirqd/012:13:440
18912994815,3cyclictest9-21ksoftirqd/012:07:440
18912994815,3cyclictest9-21ksoftirqd/009:35:030
18912994814,4cyclictest9-21ksoftirqd/009:04:310
18912994813,5cyclictest9-21ksoftirqd/007:35:000
134491480,9ptp4l16567-21/usr/sbin/munin07:05:222
134491480,4ptp4l0-21swapper/107:34:491
1891599474,8cyclictest41-21ksoftirqd/308:40:193
1891599474,7cyclictest41-21ksoftirqd/309:15:173
1891599473,8cyclictest41-21ksoftirqd/307:50:193
1891599473,7cyclictest41-21ksoftirqd/312:10:133
18912994719,3cyclictest9-21ksoftirqd/011:55:170
18912994714,4cyclictest9-21ksoftirqd/010:50:090
134491470,4ptp4l0-21swapper/207:33:252
134491470,3ptp4l0-21swapper/110:28:231
1891599464,7cyclictest41-21ksoftirqd/309:05:143
1891599463,7cyclictest41-21ksoftirqd/311:15:153
1891599462,5cyclictest0-21swapper/311:40:163
1891599462,3cyclictest121rcu_preempt07:15:203
18912994633,3cyclictest9-21ksoftirqd/009:10:180
18912994617,9cyclictest9-21ksoftirqd/009:16:180
18912994616,4cyclictest9-21ksoftirqd/009:10:010
18912994615,3cyclictest9-21ksoftirqd/012:37:000
18912994612,5cyclictest9-21ksoftirqd/007:25:000
134491460,5ptp4l16308-21ls11:40:272
134491460,4ptp4l0-21swapper/212:17:312
134491460,4ptp4l0-21swapper/112:25:311
134491460,3ptp4l0-21swapper/110:22:551
134491460,3ptp4l0-21swapper/108:47:571
134491460,3ptp4l0-21swapper/107:45:021
18912994518,4cyclictest9-21ksoftirqd/011:41:210
18912994514,4cyclictest9-21ksoftirqd/009:27:540
18912994514,4cyclictest9-21ksoftirqd/009:27:540
1891299450,2cyclictest134491ptp4l07:15:110
134491450,6ptp4l16890-21diskstats07:05:151
134491450,4ptp4l0-21swapper/112:32:091
134491450,4ptp4l0-21swapper/112:32:091
134491450,4ptp4l0-21swapper/112:00:381
134491450,4ptp4l0-21swapper/111:49:561
134491450,4ptp4l0-21swapper/109:18:051
46198440,4rtkit-daemon0-21swapper/109:22:451
18912994414,3cyclictest9-21ksoftirqd/011:01:390
134491440,8ptp4l27636-21kworker/2:209:35:292
134491440,4ptp4l0-21swapper/108:18:191
18912994315,3cyclictest9-21ksoftirqd/012:00:140
1891299431,3cyclictest30499-21kworker/0:011:20:380
134491430,3ptp4l0-21swapper/107:20:551
134491430,10ptp4l0-21swapper/111:31:161
18912994237,3cyclictest9-21ksoftirqd/009:40:190
134491420,9ptp4l0-21swapper/209:27:512
134491420,9ptp4l0-21swapper/209:27:512
134491420,9ptp4l0-21swapper/207:11:412
134491420,8ptp4l0-21swapper/210:38:472
134491420,8ptp4l0-21swapper/007:35:370
134491420,5ptp4l6218-21iostat_ios10:10:171
134491420,5ptp4l20576-21/usr/sbin/munin08:20:261
134491420,4ptp4l5073-21apt-get07:50:131
134491420,4ptp4l15757-21meminfo11:40:201
134491420,4ptp4l14490-21apt-get08:10:131
134491420,4ptp4l0-21swapper/109:40:061
134491420,3ptp4l28566-21apt-get09:50:112
134491420,3ptp4l0-21swapper/209:46:532
134491420,3ptp4l0-21swapper/111:27:381
134491420,10ptp4l0-21swapper/212:04:402
134491410,8ptp4l24703-21irqrtprio10:50:191
134491410,5ptp4l0-21swapper/109:55:111
134491410,4ptp4l8903-21ntp_states09:05:242
134491410,4ptp4l32532-21ls11:05:281
134491410,4ptp4l29514-21meminfo09:50:191
134491410,4ptp4l17102-21apt-get11:45:102
134491410,3ptp4l14062-21ls11:35:282
134491410,3ptp4l11309-21ntp_states11:30:222
18914994034,4cyclictest33-21ksoftirqd/210:26:152
18912994035,3cyclictest9-21ksoftirqd/010:40:160
134491400,8ptp4l0-21swapper/211:06:102
134491400,6ptp4l1511-21memory08:50:211
134491400,5ptp4l19522-21ps07:10:201
134491400,5ptp4l0-21swapper/208:00:182
134491400,5ptp4l0-21swapper/110:15:131
134491400,4ptp4l25060-21ls10:50:202
134491400,4ptp4l19688-21/usr/sbin/munin10:40:131
134491400,4ptp4l18268-21ntp_states10:35:211
134491400,4ptp4l0-21swapper/211:10:282
134491400,4ptp4l0-21swapper/208:15:272
134491400,4ptp4l0-21swapper/207:55:102
134491400,4ptp4l0-21swapper/207:50:522
134491400,4ptp4l0-21swapper/108:25:281
134491400,3ptp4l5493-21apt-get09:00:132
134491400,3ptp4l3494-21df11:15:131
134491400,3ptp4l26480-21hddtemp_smartct08:35:131
134491400,3ptp4l26417-21apt-get10:55:121
134491400,3ptp4l13213-21ls08:05:211
134491400,3ptp4l1213-21diskstats11:10:151
134491400,3ptp4l0-21swapper/112:12:161
134491390,5ptp4l26271-21apt-get09:45:111
134491390,5ptp4l0-21swapper/212:05:082
134491390,4ptp4l28947-21df11:00:161
134491390,4ptp4l26956-21cut07:25:212
134491390,4ptp4l2534-21users08:50:302
134491390,4ptp4l24899-21chrt08:30:241
134491390,4ptp4l1765-21python07:40:241
134491390,4ptp4l0-21swapper/212:26:012
134491390,4ptp4l0-21swapper/211:26:182
134491390,4ptp4l0-21swapper/211:20:102
134491390,4ptp4l0-21swapper/211:15:232
134491390,4ptp4l0-21swapper/210:04:152
134491390,4ptp4l0-21swapper/209:56:002
134491390,4ptp4l0-21swapper/208:31:432
134491390,4ptp4l0-21swapper/208:28:192
134491390,4ptp4l0-21swapper/208:20:162
134491390,4ptp4l0-21swapper/208:13:292
134491390,4ptp4l0-21swapper/207:43:582
134491390,4ptp4l0-21swapper/207:35:132
134491390,4ptp4l0-21swapper/207:18:122
134491390,4ptp4l0-21swapper/111:57:321
134491390,4ptp4l0-21swapper/111:39:561
134491390,4ptp4l0-21swapper/109:25:181
134491390,4ptp4l0-21swapper/109:25:181
134491390,3ptp4l21772-21apt-get10:45:111
134491390,3ptp4l0-21swapper/207:45:222
134491380,5ptp4l0-21swapper/208:48:302
134491380,4ptp4l0-21swapper/211:50:222
134491380,4ptp4l0-21swapper/211:02:522
134491380,4ptp4l0-21swapper/210:45:042
134491380,4ptp4l0-21swapper/210:30:212
134491380,4ptp4l0-21swapper/210:15:362
134491380,4ptp4l0-21swapper/210:05:402
134491380,4ptp4l0-21swapper/209:22:092
134491380,4ptp4l0-21swapper/209:15:012
134491380,4ptp4l0-21swapper/209:10:162
134491380,4ptp4l0-21swapper/208:57:022
134491380,4ptp4l0-21swapper/208:38:042
134491380,4ptp4l0-21swapper/208:05:542
134491380,4ptp4l0-21swapper/112:15:091
134491380,4ptp4l0-21swapper/112:05:141
134491380,4ptp4l0-21swapper/110:30:131
134491380,3ptp4l0-21swapper/212:39:092
134491380,3ptp4l0-21swapper/207:20:152
134491370,4ptp4l0-21swapper/210:56:182
134491370,4ptp4l0-21swapper/111:23:011
134491370,3ptp4l0-21swapper/212:30:042
134491370,3ptp4l0-21swapper/212:30:042
134491370,3ptp4l0-21swapper/111:53:361
134491370,3ptp4l0-21swapper/109:10:101
134491360,4ptp4l0-21swapper/208:42:042
134491360,3ptp4l0-21swapper/109:08:231
134491350,3ptp4l0-21swapper/212:21:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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