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2026-04-10 - 12:01
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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 Fri Apr 10, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491770,4ptp4l0-21swapper/220:35:242
16418996824,3cyclictest9-21ksoftirqd/019:55:180
134491670,4ptp4l0-21swapper/120:15:281
16418996623,4cyclictest9-21ksoftirqd/022:50:150
274742630,6sleep00-21swapper/021:50:200
16419996126,5cyclictest25-21ksoftirqd/121:30:001
134491610,9ptp4l0-21swapper/223:30:252
134491610,4ptp4l0-21swapper/219:32:452
16418996018,4cyclictest9-21ksoftirqd/020:11:440
134491600,5ptp4l0-21swapper/319:05:003
16418995916,4cyclictest9-21ksoftirqd/022:30:250
134491590,6ptp4l0-21swapper/019:05:020
134491590,4ptp4l0-21swapper/319:30:243
1641999583,40cyclictest134691getstats00:19:541
16418995830,9cyclictest9-21ksoftirqd/021:55:300
134491580,4ptp4l2429-21taskset20:59:352
16419995726,3cyclictest25-21ksoftirqd/100:35:171
16419995724,3cyclictest25-21ksoftirqd/122:25:261
16418995732,3cyclictest9-21ksoftirqd/000:09:550
134491570,3ptp4l0-21swapper/223:15:002
134491570,18ptp4l0-21swapper/321:07:033
16419995625,6cyclictest25-21ksoftirqd/123:05:191
16419995624,3cyclictest25-21ksoftirqd/120:10:221
16418995621,9cyclictest9-21ksoftirqd/019:55:000
134491560,3ptp4l0-21swapper/322:54:073
134491560,3ptp4l0-21swapper/200:37:212
134491560,3ptp4l0-21swapper/121:05:131
134491560,3ptp4l0-21swapper/100:05:231
134491550,4ptp4l0-21swapper/000:20:170
16419995422,3cyclictest25-21ksoftirqd/119:15:201
1641899547,3cyclictest9-21ksoftirqd/023:15:280
134491540,4ptp4l0-21swapper/322:25:533
134491540,3ptp4l27614-21taskset19:33:080
134491540,3ptp4l0-21swapper/319:56:593
16419995324,3cyclictest25-21ksoftirqd/123:20:271
16419995321,4cyclictest25-21ksoftirqd/122:20:201
1641899537,3cyclictest9-21ksoftirqd/023:35:010
16418995322,4cyclictest9-21ksoftirqd/023:35:160
16418995322,4cyclictest9-21ksoftirqd/023:35:160
134491530,4ptp4l0-21swapper/119:08:261
134491530,3ptp4l0-21swapper/221:15:142
134491530,3ptp4l0-21swapper/219:38:282
16419995220,4cyclictest25-21ksoftirqd/123:50:251
16418995224,3cyclictest9-21ksoftirqd/020:02:300
16418995214,7cyclictest9-21ksoftirqd/022:40:250
134491520,12ptp4l0-21swapper/223:40:272
16419995121,4cyclictest25-21ksoftirqd/119:25:251
16418995119,3cyclictest121rcu_preempt22:20:180
134491510,4ptp4l0-21swapper/221:45:022
134491510,4ptp4l0-21swapper/122:51:011
134491510,3ptp4l0-21swapper/319:35:133
134491510,3ptp4l0-21swapper/221:35:002
16419995021,3cyclictest25-21ksoftirqd/123:35:241
16419995021,3cyclictest25-21ksoftirqd/123:35:241
16419995018,4cyclictest25-21ksoftirqd/123:50:011
16419995018,4cyclictest25-21ksoftirqd/122:00:001
134491500,4ptp4l0-21swapper/323:04:373
134491500,4ptp4l0-21swapper/321:37:213
134491500,4ptp4l0-21swapper/321:23:053
134491500,4ptp4l0-21swapper/220:52:032
134491500,4ptp4l0-21swapper/120:07:361
134491500,4ptp4l0-21swapper/022:46:190
134491500,4ptp4l0-21swapper/022:15:400
134491500,4ptp4l0-21swapper/022:11:510
134491500,3ptp4l0-21swapper/221:27:142
134491500,3ptp4l0-21swapper/123:11:461
16419994920,4cyclictest25-21ksoftirqd/121:20:201
16419994917,4cyclictest25-21ksoftirqd/120:50:211
16419994917,3cyclictest25-21ksoftirqd/122:45:171
16418994927,2cyclictest9-21ksoftirqd/021:25:370
16418994923,4cyclictest9-21ksoftirqd/021:19:450
134491490,4ptp4l0-21swapper/221:51:372
134491490,3ptp4l0-21swapper/300:37:383
134491490,3ptp4l0-21swapper/223:45:312
134491490,3ptp4l0-21swapper/121:41:131
16419994822,4cyclictest25-21ksoftirqd/122:35:241
16419994817,3cyclictest25-21ksoftirqd/123:30:261
16419994813,4cyclictest25-21ksoftirqd/123:15:201
1641899487,7cyclictest9-21ksoftirqd/020:15:430
1641899487,3cyclictest9-21ksoftirqd/021:13:270
16418994824,10cyclictest9-21ksoftirqd/023:10:000
16418994810,4cyclictest9-21ksoftirqd/023:45:180
134491480,4ptp4l0-21swapper/323:32:433
134491480,4ptp4l0-21swapper/323:22:093
134491480,4ptp4l0-21swapper/319:49:393
134491480,4ptp4l0-21swapper/300:03:213
134491480,4ptp4l0-21swapper/223:59:182
134491480,4ptp4l0-21swapper/222:01:392
134491480,4ptp4l0-21swapper/219:18:162
134491480,4ptp4l0-21swapper/121:34:441
134491480,4ptp4l0-21swapper/120:38:071
134491480,4ptp4l0-21swapper/100:13:431
134491480,4ptp4l0-21swapper/020:24:500
134491480,3ptp4l0-21swapper/322:30:493
134491480,3ptp4l0-21swapper/320:14:163
134491480,3ptp4l0-21swapper/223:00:282
16419994733,3cyclictest25-21ksoftirqd/122:20:001
16419994732,4cyclictest25-21ksoftirqd/119:35:161
16419994718,3cyclictest25-21ksoftirqd/119:57:431
16419994717,3cyclictest25-21ksoftirqd/123:25:191
16419994713,4cyclictest25-21ksoftirqd/120:29:191
16418994714,8cyclictest9-21ksoftirqd/019:35:140
134491470,4ptp4l0-21swapper/319:44:493
134491470,4ptp4l0-21swapper/222:48:592
134491470,4ptp4l0-21swapper/222:32:142
134491470,4ptp4l0-21swapper/220:16:472
134491470,4ptp4l0-21swapper/219:45:162
134491470,4ptp4l0-21swapper/120:48:451
134491470,3ptp4l0-21swapper/222:29:352
134491470,2ptp4l121rcu_preempt19:11:593
16419994632,4cyclictest25-21ksoftirqd/120:45:001
16419994617,4cyclictest25-21ksoftirqd/122:00:191
16419994615,3cyclictest25-21ksoftirqd/121:13:451
16419994613,7cyclictest25-21ksoftirqd/123:42:521
16419994612,4cyclictest25-21ksoftirqd/121:00:471
16419994612,4cyclictest25-21ksoftirqd/121:00:471
1641899464,3cyclictest9-21ksoftirqd/023:57:500
134491460,5ptp4l0-21swapper/221:14:592
134491460,4ptp4l0-21swapper/321:30:523
134491460,4ptp4l0-21swapper/320:04:213
134491460,4ptp4l0-21swapper/319:22:363
134491460,4ptp4l0-21swapper/121:36:511
134491460,4ptp4l0-21swapper/119:49:101
134491460,4ptp4l0-21swapper/022:08:070
134491460,3ptp4l0-21swapper/300:25:213
1641999454,3cyclictest28555-21vmstat23:00:281
16419994540,3cyclictest25-21ksoftirqd/119:15:001
16419994515,4cyclictest25-21ksoftirqd/122:40:191
16419994512,5cyclictest25-21ksoftirqd/121:52:261
1641899454,7cyclictest121rcu_preempt21:05:150
1641899454,2cyclictest121rcu_preempt22:40:000
16418994538,4cyclictest9-21ksoftirqd/022:59:590
1641899453,2cyclictest9-21ksoftirqd/019:25:210
16418994532,4cyclictest9-21ksoftirqd/020:30:000
16418994531,4cyclictest9-21ksoftirqd/020:05:120
16418994529,4cyclictest9-21ksoftirqd/021:20:160
16418994526,3cyclictest9-21ksoftirqd/000:15:190
1641899452,2cyclictest9-21ksoftirqd/000:30:250
1641899451,3cyclictest121rcu_preempt20:45:010
134491450,4ptp4l0-21swapper/321:47:443
134491450,4ptp4l0-21swapper/320:24:313
134491450,4ptp4l0-21swapper/222:14:132
134491450,4ptp4l0-21swapper/119:21:061
134491450,3ptp4l0-21swapper/319:50:263
134491450,3ptp4l0-21swapper/219:22:222
134491450,3ptp4l0-21swapper/123:57:261
134491450,11ptp4l0-21swapper/020:35:230
16419994431,3cyclictest25-21ksoftirqd/122:55:211
16418994427,4cyclictest9-21ksoftirqd/020:50:280
134491440,3ptp4l0-21swapper/321:55:143
1641999431,7cyclictest25-21ksoftirqd/100:00:251
1641999431,3cyclictest21255-21/usr/sbin/munin20:30:201
1641999431,3cyclictest21255-21/usr/sbin/munin20:30:201
16419994313,4cyclictest25-21ksoftirqd/119:30:271
16419994312,4cyclictest25-21ksoftirqd/100:29:361
16419994311,3cyclictest25-21ksoftirqd/119:51:131
16418994337,3cyclictest9-21ksoftirqd/021:45:260
16418994317,9cyclictest9-21ksoftirqd/000:04:400
1641899430,3cyclictest121rcu_preempt19:50:000
1641899430,2cyclictest9-21ksoftirqd/022:00:250
134491430,5ptp4l0-21swapper/020:45:130
134491430,3ptp4l0-21swapper/323:15:243
134491430,3ptp4l0-21swapper/220:21:372
134491430,10ptp4l0-21swapper/222:19:322
1641999426,5cyclictest25-21ksoftirqd/119:42:401
1641999423,6cyclictest0-21swapper/120:55:111
16419994236,3cyclictest25-21ksoftirqd/121:20:011
16419994213,4cyclictest25-21ksoftirqd/100:30:171
16418994239,2cyclictest101ktimersoftd/000:35:230
16418994236,3cyclictest9-21ksoftirqd/021:00:000
16418994227,4cyclictest9-21ksoftirqd/020:30:120
16418994227,4cyclictest9-21ksoftirqd/020:30:120
1641899422,3cyclictest121rcu_preempt19:10:210
1641899421,2cyclictest9-21ksoftirqd/022:30:000
1641899420,2cyclictest121rcu_preempt23:54:590
134491420,9ptp4l0-21swapper/221:09:182
134491420,5ptp4l28484-21diskstats20:45:152
134491420,4ptp4l6200-21ntp_states19:55:222
134491420,4ptp4l19391-21ls23:50:262
134491420,4ptp4l0-21swapper/322:10:303
134491420,4ptp4l0-21swapper/221:58:042
134491420,1ptp4l0-21swapper/200:13:232
16419994128,4cyclictest25-21ksoftirqd/122:30:211
16419994128,3cyclictest25-21ksoftirqd/122:10:131
1641999410,2cyclictest121rcu_preempt20:23:491
1641999410,2cyclictest121rcu_preempt20:00:231
1641899418,5cyclictest9-21ksoftirqd/000:30:000
16418994136,3cyclictest9-21ksoftirqd/019:40:190
16418994135,3cyclictest9-21ksoftirqd/023:25:190
16418994135,3cyclictest9-21ksoftirqd/021:40:280
1641899413,2cyclictest9-21ksoftirqd/019:22:250
16418994129,3cyclictest9-21ksoftirqd/023:24:260
134491410,8ptp4l0-21swapper/220:28:232
134491410,5ptp4l0-21swapper/320:50:113
134491410,5ptp4l0-21swapper/221:00:152
134491410,5ptp4l0-21swapper/221:00:152
134491410,5ptp4l0-21swapper/021:35:070
134491410,4ptp4l3309-21iostat21:00:180
134491410,4ptp4l3309-21iostat21:00:180
134491410,4ptp4l32417-21memory23:10:200
134491410,4ptp4l0-21swapper/320:25:583
134491410,4ptp4l0-21swapper/220:02:462
134491410,4ptp4l0-21swapper/121:45:141
16419994025,4cyclictest25-21ksoftirqd/100:23:381
16419994011,3cyclictest25-21ksoftirqd/122:05:131
16418994033,3cyclictest9-21ksoftirqd/023:40:160
1641899400,2cyclictest121rcu_preempt00:10:230
134491400,9ptp4l0-21swapper/222:08:412
134491400,5ptp4l0-21swapper/323:40:143
134491400,5ptp4l0-21swapper/322:20:133
134491400,5ptp4l0-21swapper/300:08:063
134491400,5ptp4l0-21swapper/223:35:202
134491400,5ptp4l0-21swapper/223:35:202
134491400,4ptp4l33-21ksoftirqd/222:44:172
134491400,4ptp4l2318-21gnome-shell23:48:593
134491400,4ptp4l17401-21memory19:10:202
134491400,4ptp4l0-21swapper/321:04:523
134491400,4ptp4l0-21swapper/321:04:523
134491400,4ptp4l0-21swapper/320:15:253
134491400,4ptp4l0-21swapper/320:05:273
134491400,4ptp4l0-21swapper/221:40:312
134491400,4ptp4l0-21swapper/019:16:410
134491400,3ptp4l28373-21ls23:00:260
134491400,3ptp4l25878-21apt-get20:40:103
134491400,3ptp4l20621-21python21:35:252
134491400,3ptp4l20266-21apt-get23:55:113
16420993934,3cyclictest33-21ksoftirqd/223:25:002
134491390,5ptp4l0-21swapper/323:10:183
134491390,5ptp4l0-21swapper/323:05:173
134491390,5ptp4l0-21swapper/322:05:123
134491390,5ptp4l0-21swapper/200:00:242
134491390,4ptp4l33-21ksoftirqd/200:15:162
134491390,4ptp4l12943-21meminfo20:10:172
134491390,4ptp4l10180-21if_enp1s020:05:132
134491390,4ptp4l0-21swapper/322:36:373
134491390,4ptp4l0-21swapper/321:50:243
134491390,4ptp4l0-21swapper/321:40:143
134491390,4ptp4l0-21swapper/321:25:293
134491390,4ptp4l0-21swapper/321:15:173
134491390,4ptp4l0-21swapper/320:45:403
134491390,4ptp4l0-21swapper/320:35:173
134491390,4ptp4l0-21swapper/320:30:213
134491390,4ptp4l0-21swapper/320:30:213
134491390,4ptp4l0-21swapper/319:25:213
134491390,4ptp4l0-21swapper/300:31:443
134491390,4ptp4l0-21swapper/223:18:432
134491390,4ptp4l0-21swapper/220:30:132
134491390,4ptp4l0-21swapper/220:30:132
134491390,4ptp4l0-21swapper/219:43:112
134491390,4ptp4l0-21swapper/021:30:280
134491390,3ptp4l0-21swapper/222:51:252
134491390,2ptp4l2325-21llvmpipe-223:50:593
134491380,5ptp4l0-21swapper/319:15:123
134491380,5ptp4l0-21swapper/300:19:593
134491380,5ptp4l0-21swapper/223:05:002
134491380,4ptp4l0-21swapper/323:25:263
134491380,4ptp4l0-21swapper/322:55:133
134491380,4ptp4l0-21swapper/322:46:303
134491380,4ptp4l0-21swapper/322:40:023
134491380,4ptp4l0-21swapper/322:15:153
134491380,4ptp4l0-21swapper/321:13:303
134491380,4ptp4l0-21swapper/300:10:313
134491380,4ptp4l0-21swapper/222:56:242
134491380,4ptp4l0-21swapper/222:37:462
134491380,4ptp4l0-21swapper/222:20:192
134491380,4ptp4l0-21swapper/221:20:182
134491380,4ptp4l0-21swapper/219:50:202
134491380,4ptp4l0-21swapper/219:25:202
134491380,4ptp4l0-21swapper/200:31:082
134491380,4ptp4l0-21swapper/200:20:182
134491380,3ptp4l0-21swapper/323:35:323
134491380,3ptp4l0-21swapper/323:35:323
134491380,3ptp4l0-21swapper/320:55:263
134491380,3ptp4l0-21swapper/220:40:152
134491380,3ptp4l0-21swapper/200:25:032
134491380,3ptp4l0-21swapper/200:06:582
134491370,4ptp4l0-21swapper/322:00:543
134491370,4ptp4l0-21swapper/300:20:023
134491370,4ptp4l0-21swapper/223:25:242
140562111,5sleep213638-21apt-get19:05:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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