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2026-03-30 - 23:28
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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 Mar 30, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491910,3ptp4l0-21swapper/311:34:463
280322850,4sleep30-21swapper/311:55:173
103192820,5sleep233-21ksoftirqd/212:25:252
2402199792,32cyclictest0-21swapper/212:15:142
134491790,27ptp4l3387-21chrt09:53:441
2402199772,33cyclictest0-21swapper/208:20:222
275812740,4sleep09-21ksoftirqd/010:45:170
24021997312,59cyclictest0-21swapper/212:05:282
2402199672,36cyclictest0-21swapper/207:50:292
2402199672,35cyclictest0-21swapper/209:30:162
2402199672,35cyclictest0-21swapper/208:25:172
24021996529,7cyclictest33-21ksoftirqd/210:04:142
2402199652,35cyclictest0-21swapper/207:15:152
2402199652,34cyclictest0-21swapper/212:24:202
2402199652,34cyclictest0-21swapper/211:50:172
2402199652,34cyclictest0-21swapper/208:30:242
2402199652,33cyclictest0-21swapper/209:05:192
24021996429,10cyclictest33-21ksoftirqd/208:40:132
24021996427,7cyclictest33-21ksoftirqd/209:03:022
24021996427,7cyclictest33-21ksoftirqd/209:03:022
24021996424,11cyclictest33-21ksoftirqd/207:56:182
2402199642,34cyclictest0-21swapper/211:35:132
18532640,5sleep00-21swapper/011:00:150
134491640,4ptp4l0-21swapper/007:10:210
134491640,19ptp4l0-21swapper/307:30:273
302612630,3sleep20-21swapper/207:20:292
24021996328,6cyclictest33-21ksoftirqd/211:30:132
24021996324,4cyclictest33-21ksoftirqd/211:30:002
2402199632,33cyclictest0-21swapper/208:55:202
2402199632,33cyclictest0-21swapper/208:55:202
2402199632,32cyclictest0-21swapper/209:25:232
2402199632,32cyclictest0-21swapper/207:35:192
2402199632,32cyclictest0-21swapper/207:35:192
181542630,3sleep018160-21dump-pmu-power11:35:000
24021996226,8cyclictest33-21ksoftirqd/211:03:532
24021996226,7cyclictest33-21ksoftirqd/212:39:482
24021996226,4cyclictest33-21ksoftirqd/211:10:012
24021996223,8cyclictest33-21ksoftirqd/209:40:332
2402199622,33cyclictest0-21swapper/208:04:582
2402199622,32cyclictest0-21swapper/208:09:222
24021996121,8cyclictest33-21ksoftirqd/211:43:312
24021996029,5cyclictest33-21ksoftirqd/210:20:172
24021996025,8cyclictest33-21ksoftirqd/208:49:502
24021996021,11cyclictest33-21ksoftirqd/207:42:462
134491600,4ptp4l17401-21diskstats08:05:150
24021995930,4cyclictest33-21ksoftirqd/207:10:222
24021995927,7cyclictest33-21ksoftirqd/210:45:162
24021995826,10cyclictest33-21ksoftirqd/210:10:272
24021995821,8cyclictest33-21ksoftirqd/209:35:312
134691580,7getstats0-21swapper/008:55:160
134691580,7getstats0-21swapper/008:55:160
134491580,3ptp4l31635-21apt-get10:55:132
254522570,2sleep225456-21sed10:40:182
24021995732,6cyclictest33-21ksoftirqd/210:00:002
24021995721,8cyclictest33-21ksoftirqd/209:18:222
24021995721,5cyclictest33-21ksoftirqd/208:15:242
24021995720,7cyclictest33-21ksoftirqd/209:45:502
134491570,3ptp4l0-21swapper/112:04:211
134491570,3ptp4l0-21swapper/108:45:271
134491570,3ptp4l0-21swapper/007:30:260
24021995620,5cyclictest33-21ksoftirqd/212:30:142
24021995619,5cyclictest33-21ksoftirqd/207:30:132
134491560,4ptp4l0-21swapper/310:45:193
134491560,21ptp4l25-21ksoftirqd/108:55:181
134491560,21ptp4l25-21ksoftirqd/108:55:181
24021995526,9cyclictest33-21ksoftirqd/209:50:252
2402199552,32cyclictest0-21swapper/211:55:202
134491550,4ptp4l0-21swapper/109:14:001
134491550,4ptp4l0-21swapper/109:04:401
134491550,4ptp4l0-21swapper/109:04:401
134491550,4ptp4l0-21swapper/007:25:230
134491550,3ptp4l0-21swapper/108:35:241
2402199542,8cyclictest33-21ksoftirqd/210:25:252
134491540,3ptp4l0-21swapper/309:07:133
134491540,3ptp4l0-21swapper/111:06:211
134491540,14ptp4l0-21swapper/107:40:431
24021995330,7cyclictest33-21ksoftirqd/209:15:012
2402199532,25cyclictest0-21swapper/211:46:402
24021995320,7cyclictest33-21ksoftirqd/210:09:002
134491530,4ptp4l0-21swapper/011:26:560
134491530,3ptp4l0-21swapper/109:25:471
134491530,11ptp4l0-21swapper/007:05:200
2402199522,8cyclictest33-21ksoftirqd/211:20:272
24021995228,7cyclictest33-21ksoftirqd/208:35:172
2402199522,7cyclictest0-21swapper/212:10:262
2402199522,7cyclictest0-21swapper/212:10:262
2402199521,9cyclictest121rcu_preempt08:50:202
134491520,4ptp4l0-21swapper/312:26:593
134491520,4ptp4l0-21swapper/311:10:153
134491520,4ptp4l0-21swapper/008:43:200
2402199515,3cyclictest33-21ksoftirqd/212:00:172
2402199513,6cyclictest33-21ksoftirqd/209:20:192
24021995121,5cyclictest33-21ksoftirqd/210:30:122
24021995119,8cyclictest33-21ksoftirqd/211:10:172
2402199510,7cyclictest33-21ksoftirqd/207:25:202
134491510,4ptp4l0-21swapper/110:24:281
2402199503,3cyclictest121rcu_preempt07:45:042
24021995014,5cyclictest33-21ksoftirqd/210:15:212
134491500,4ptp4l0-21swapper/110:52:361
134491500,4ptp4l0-21swapper/110:16:251
134491500,4ptp4l0-21swapper/110:10:021
134491500,4ptp4l0-21swapper/109:59:141
134491500,4ptp4l0-21swapper/107:22:381
134491500,4ptp4l0-21swapper/009:19:140
134491500,3ptp4l5643-21apt08:49:593
24022994938,3cyclictest41-21ksoftirqd/307:10:313
2402199493,6cyclictest121rcu_preempt10:51:412
134491490,5ptp4l0-21swapper/107:05:121
134491490,4ptp4l0-21swapper/312:33:303
134491490,4ptp4l0-21swapper/108:15:471
134491490,4ptp4l0-21swapper/010:50:410
134491490,4ptp4l0-21swapper/009:56:270
134491490,4ptp4l0-21swapper/008:32:520
134491490,4ptp4l0-21swapper/007:47:510
134491490,3ptp4l0-21swapper/109:21:501
134491490,3ptp4l0-21swapper/107:50:531
2402199482,2cyclictest121rcu_preempt08:10:182
24021994815,7cyclictest33-21ksoftirqd/211:18:132
134691480,3getstats0-21swapper/111:10:171
134491480,4ptp4l0-21swapper/308:11:253
134491480,4ptp4l0-21swapper/011:45:440
134491480,4ptp4l0-21swapper/011:05:130
134491480,4ptp4l0-21swapper/009:27:070
134491480,3ptp4l0-21swapper/108:34:441
134491480,3ptp4l0-21swapper/009:35:200
134491480,10ptp4l0-21swapper/107:10:001
24022994735,10cyclictest41-21ksoftirqd/307:15:193
2402299470,2cyclictest121rcu_preempt08:07:593
2402199473,6cyclictest0-21swapper/210:35:172
134491470,8ptp4l0-21swapper/112:20:221
134491470,4ptp4l0-21swapper/309:45:043
134491470,4ptp4l0-21swapper/110:05:491
134491470,4ptp4l0-21swapper/110:04:321
134491470,4ptp4l0-21swapper/109:37:141
134491470,4ptp4l0-21swapper/108:14:091
134491470,4ptp4l0-21swapper/012:12:510
134491470,4ptp4l0-21swapper/012:12:510
134491470,3ptp4l0-21swapper/307:53:333
134491470,3ptp4l0-21swapper/109:31:171
134491470,2ptp4l13305-21df_inode10:15:150
24022994640,3cyclictest41-21ksoftirqd/309:39:593
134491460,9ptp4l23956-21latency_hist08:20:003
134491460,8ptp4l101ktimersoftd/008:10:280
134491460,4ptp4l0-21swapper/312:16:383
134491460,4ptp4l0-21swapper/110:28:171
134491460,4ptp4l0-21swapper/109:43:121
134491460,4ptp4l0-21swapper/011:35:020
134491460,3ptp4l0-21swapper/308:36:153
24022994536,3cyclictest41-21ksoftirqd/310:50:203
24022994531,4cyclictest41-21ksoftirqd/312:10:293
24022994531,4cyclictest41-21ksoftirqd/312:10:293
2402299450,2cyclictest121rcu_preempt10:18:593
2402299450,2cyclictest121rcu_preempt08:33:583
134491450,4ptp4l0-21swapper/311:53:073
134491450,4ptp4l0-21swapper/007:38:130
134491450,4ptp4l0-21swapper/007:38:130
134491450,3ptp4l0-21swapper/011:20:310
134491450,3ptp4l0-21swapper/009:00:290
134491450,3ptp4l0-21swapper/009:00:290
134491450,10ptp4l29045-21fschecks_time07:20:170
24022994430,4cyclictest41-21ksoftirqd/310:25:253
134491440,4ptp4l0-21swapper/009:51:060
134491440,4ptp4l0-21swapper/007:15:280
134491440,3ptp4l0-21swapper/109:16:361
24022994330,4cyclictest41-21ksoftirqd/308:20:213
2402299430,2cyclictest121rcu_preempt08:41:583
134491430,4ptp4l5965-21hddtemp_smartct07:40:170
134491430,3ptp4l0-21swapper/107:34:501
24022994238,2cyclictest41-21ksoftirqd/310:40:003
134691420,10getstats0-21swapper/312:24:133
134691420,10getstats0-21swapper/111:34:431
134491420,6ptp4l8948-21appstreamcli11:15:020
134491420,5ptp4l0-21swapper/307:35:223
134491420,5ptp4l0-21swapper/307:35:223
134491420,4ptp4l5643-21apt-get08:50:030
134491420,4ptp4l20719-21apt-get11:40:133
134491420,4ptp4l0-21swapper/307:29:193
134491420,4ptp4l0-21swapper/112:35:261
134491420,3ptp4l15367-21apt-get09:10:130
134691410,4getstats0-21swapper/310:30:173
134491410,6ptp4l0-21swapper/308:25:103
134491410,5ptp4l6264-21df10:00:120
134491410,5ptp4l24955-21hddtemp_smartct10:40:161
134491410,5ptp4l0-21swapper/308:00:193
134491410,5ptp4l0-21swapper/111:50:241
134491410,5ptp4l0-21swapper/109:45:161
134491410,5ptp4l0-21swapper/012:35:160
134491410,5ptp4l0-21swapper/012:19:280
134491410,5ptp4l0-21swapper/010:20:180
134491410,4ptp4l32205-21iostat_ios10:55:190
134491410,4ptp4l27468-21meminfo08:25:171
134491410,4ptp4l25374-21irqstats10:40:180
134491410,4ptp4l23238-21memory09:25:203
134491410,4ptp4l22515-21diskstats10:35:150
134491410,4ptp4l19351-21meminfo11:35:213
134491410,4ptp4l0-21swapper/112:18:071
134491410,4ptp4l0-21swapper/110:30:231
134491410,4ptp4l0-21swapper/012:29:300
134491410,4ptp4l0-21swapper/011:58:000
134491410,3ptp4l8981-21apt-get11:15:141
134491410,3ptp4l7830-21apt-get07:45:131
134491410,3ptp4l26346-21apt-get07:15:131
134491410,3ptp4l0-21swapper/008:35:240
2402299405,3cyclictest41-21ksoftirqd/310:00:013
24022994034,4cyclictest41-21ksoftirqd/309:20:003
24022994028,4cyclictest41-21ksoftirqd/312:35:173
24019994034,3cyclictest9-21ksoftirqd/010:10:210
134491400,5ptp4l0-21swapper/311:45:153
134491400,5ptp4l0-21swapper/112:25:221
134491400,5ptp4l0-21swapper/111:20:201
134491400,5ptp4l0-21swapper/111:01:021
134491400,5ptp4l0-21swapper/108:01:591
134491400,4ptp4l3534-21python12:10:261
134491400,4ptp4l3534-21python12:10:261
134491400,4ptp4l23019-21ntp_states08:15:230
134491400,4ptp4l1443-21df08:40:121
134491400,4ptp4l0-21swapper/311:05:223
134491400,4ptp4l0-21swapper/307:55:193
134491400,4ptp4l0-21swapper/110:55:181
134491400,4ptp4l0-21swapper/110:45:251
134491400,4ptp4l0-21swapper/110:35:201
134491400,4ptp4l0-21swapper/108:50:261
134491400,4ptp4l0-21swapper/012:30:180
134491400,4ptp4l0-21swapper/012:09:220
134491400,4ptp4l0-21swapper/011:40:130
134491400,4ptp4l0-21swapper/011:10:460
134491400,4ptp4l0-21swapper/010:30:260
134491400,4ptp4l0-21swapper/009:30:170
134491400,4ptp4l0-21swapper/008:00:390
134491400,4ptp4l0-21swapper/007:59:310
134491400,4ptp4l0-21swapper/007:50:210
134491400,3ptp4l9536-21ntp_states10:05:220
134491400,3ptp4l5835-21df_inode07:40:153
134491400,3ptp4l31802-21diskstats09:45:170
134491400,3ptp4l27362-21irqstats08:25:170
134491400,3ptp4l26173-21irqstats11:50:220
134491400,3ptp4l0-21swapper/012:20:500
134491400,2ptp4l2318-21gnome-shell09:13:583
24022993934,3cyclictest41-21ksoftirqd/312:05:203
24022993934,3cyclictest41-21ksoftirqd/309:55:013
24022993933,3cyclictest41-21ksoftirqd/311:20:173
134491390,5ptp4l0-21swapper/112:08:351
134491390,5ptp4l0-21swapper/108:20:581
134491390,5ptp4l0-21swapper/009:40:160
134491390,5ptp4l0-21swapper/009:20:140
134491390,5ptp4l0-21swapper/008:23:000
134491390,4ptp4l31621-21/usr/sbin/munin10:55:243
134491390,4ptp4l0-21swapper/312:04:263
134491390,4ptp4l0-21swapper/311:25:183
134491390,4ptp4l0-21swapper/311:15:213
134491390,4ptp4l0-21swapper/311:00:123
134491390,4ptp4l0-21swapper/310:42:593
134491390,4ptp4l0-21swapper/310:24:033
134491390,4ptp4l0-21swapper/307:20:283
134491390,4ptp4l0-21swapper/111:55:161
134491390,4ptp4l0-21swapper/111:49:051
134491390,4ptp4l0-21swapper/111:25:141
134491390,4ptp4l0-21swapper/109:05:191
134491390,4ptp4l0-21swapper/107:55:101
134491390,4ptp4l0-21swapper/012:00:200
134491390,4ptp4l0-21swapper/010:25:120
134491390,4ptp4l0-21swapper/008:45:250
134491390,3ptp4l0-21swapper/112:30:161
134491390,3ptp4l0-21swapper/009:05:590
24022993833,3cyclictest41-21ksoftirqd/307:45:273
24022993827,4cyclictest41-21ksoftirqd/309:00:263
24022993827,4cyclictest41-21ksoftirqd/309:00:263
134491380,4ptp4l0-21swapper/310:11:453
134491380,4ptp4l0-21swapper/309:20:263
134491380,4ptp4l0-21swapper/111:41:361
134491380,4ptp4l0-21swapper/111:39:231
134491380,4ptp4l0-21swapper/107:26:461
134491380,3ptp4l0-21swapper/108:05:181
134491380,3ptp4l0-21swapper/107:37:501
134491380,3ptp4l0-21swapper/107:37:501
24022993731,3cyclictest41-21ksoftirqd/308:55:163
24022993731,3cyclictest41-21ksoftirqd/308:55:163
2402299370,2cyclictest121rcu_preempt09:30:583
134491370,4ptp4l0-21swapper/310:05:093
134491370,4ptp4l0-21swapper/310:00:293
134491370,4ptp4l0-21swapper/309:40:123
24022993531,3cyclictest41-21ksoftirqd/308:50:273
137891225,10phc2sys0-21swapper/307:05:123
236982146,4sleep20-21swapper/207:09:432
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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