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2026-07-22 - 04:21
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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 Jul 22, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3125999775,70cyclictest0-21swapper/321:50:193
3125999756,6cyclictest137891phc2sys23:01:403
3125999746,40cyclictest0-21swapper/319:30:233
31258997412,60cyclictest0-21swapper/200:05:292
3125899684,62cyclictest0-21swapper/223:25:292
31259996713,18cyclictest18710-21taskset00:27:453
31259996613,11cyclictest20822-21taskset23:24:503
31259996612,19cyclictest8294-21taskset21:49:473
31259996514,16cyclictest14530-21taskset00:20:103
31259996513,12cyclictest21964-21taskset21:07:153
31259996513,11cyclictest23056-21taskset23:29:033
31259996513,11cyclictest17963-21taskset23:15:433
3125899654,59cyclictest0-21swapper/200:15:292
3125899654,59cyclictest0-21swapper/200:15:292
3125899653,60cyclictest0-21swapper/219:35:282
3125899652,61cyclictest0-21swapper/200:30:302
31259996413,12cyclictest4823-21taskset23:59:283
31259996413,12cyclictest29231-21taskset22:34:563
31259996413,11cyclictest12781-21taskset21:58:263
31259996314,11cyclictest1166-21seq21:33:413
31259996312,10cyclictest10519-21taskset20:43:003
31258996231,4cyclictest33-21ksoftirqd/221:10:272
31259996111,11cyclictest19159-21taskset19:51:143
132342610,4sleep20-21swapper/222:00:132
3125999608,15cyclictest13206-21missed_timers00:15:223
3125999608,15cyclictest13206-21missed_timers00:15:223
31259996012,46cyclictest0-21swapper/300:37:293
134491600,4ptp4l0-21swapper/020:32:040
3125999599,12cyclictest13004-21grep23:05:263
31259995914,43cyclictest0-21swapper/319:36:093
31259995913,10cyclictest12648-21taskset20:45:563
31258995930,8cyclictest33-21ksoftirqd/223:25:002
134491590,4ptp4l0-21swapper/222:15:142
134491580,4ptp4l0-21swapper/320:17:133
134491580,4ptp4l0-21swapper/222:51:062
31259995711,10cyclictest17433-21runrttasks22:08:553
134491570,4ptp4l0-21swapper/319:12:353
134491570,4ptp4l0-21swapper/300:32:373
134491570,3ptp4l0-21swapper/219:50:042
134491570,2ptp4l0-21swapper/000:29:470
31259995612,11cyclictest14508-21runrttasks19:40:313
134491560,4ptp4l0-21swapper/119:08:441
3125999559,43cyclictest0-21swapper/323:30:273
31259995514,10cyclictest17116-21seq19:49:263
31259995512,17cyclictest8250-21taskset20:38:373
134491550,3ptp4l0-21swapper/220:06:482
31259995414,10cyclictest3614-21seq21:38:543
31259995413,10cyclictest30000-21runrttasks23:41:453
3125899544,8cyclictest33-21ksoftirqd/220:20:122
3125899540,8cyclictest33-21ksoftirqd/219:35:002
312152540,3sleep30-21swapper/322:35:303
3125799533,48cyclictest0-21swapper/122:35:191
134491530,4ptp4l0-21swapper/020:14:190
31259995214,10cyclictest23884-21runrttasks20:02:383
31259995211,10cyclictest19677-21runrttasks22:13:163
3125899526,8cyclictest33-21ksoftirqd/220:35:202
3125899525,8cyclictest33-21ksoftirqd/222:30:012
3125899522,6cyclictest33-21ksoftirqd/222:50:002
3125899521,10cyclictest0-21swapper/222:24:562
3125899520,14cyclictest33-21ksoftirqd/200:10:152
134491520,4ptp4l0-21swapper/200:28:592
134491520,3ptp4l0-21swapper/022:53:510
31259995113,11cyclictest15105-21seq20:52:573
31259995112,10cyclictest6734-21chrt22:54:113
31259995110,10cyclictest17518-21runrttasks20:59:263
3125899512,6cyclictest0-21swapper/223:50:212
3125899510,49cyclictest0-21swapper/223:10:282
3125899510,13cyclictest33-21ksoftirqd/219:19:552
3125899510,12cyclictest33-21ksoftirqd/220:59:592
134491510,4ptp4l0-21swapper/222:40:212
134491510,4ptp4l0-21swapper/220:04:322
3125999503,9cyclictest0-21swapper/300:05:193
31259995011,12cyclictest22369-21taskset22:20:093
31259995011,11cyclictest15042-21chrt22:02:403
3125899503,6cyclictest33-21ksoftirqd/219:15:002
3125899502,6cyclictest33-21ksoftirqd/223:55:192
3125899502,6cyclictest33-21ksoftirqd/221:15:162
3125899502,6cyclictest0-21swapper/220:15:252
3125899502,38cyclictest0-21swapper/223:00:222
134491500,5ptp4l0-21swapper/319:09:583
31259994914,15cyclictest3293-21sed20:25:313
31259994911,10cyclictest25659-21ntp_states20:05:233
3125899492,6cyclictest0-21swapper/221:25:162
3125899490,6cyclictest33-21ksoftirqd/223:45:272
3125899490,6cyclictest33-21ksoftirqd/223:45:272
3125899490,6cyclictest27907-21grep21:20:212
3125899482,6cyclictest0-21swapper/200:20:202
3125899482,32cyclictest0-21swapper/219:55:172
3125899480,6cyclictest33-21ksoftirqd/220:50:282
3125899480,5cyclictest33-21ksoftirqd/219:24:592
3125999479,9cyclictest5721-21taskset21:41:183
3125999474,9cyclictest0-21swapper/319:15:343
3125999474,6cyclictest134491ptp4l21:10:253
3125999472,12cyclictest18718-21wc21:00:203
3125899474,9cyclictest33-21ksoftirqd/223:30:162
3125899472,8cyclictest33-21ksoftirqd/220:25:252
3125899472,5cyclictest0-21swapper/222:55:202
3125899472,5cyclictest0-21swapper/222:25:232
3125899470,7cyclictest15911-21irqrtprio19:45:202
134491470,5ptp4l3125999cyclictest21:16:013
134491470,4ptp4l0-21swapper/221:40:552
134491470,3ptp4l0-21swapper/221:49:312
134491470,10ptp4l0-21swapper/000:31:570
3125899466,5cyclictest33-21ksoftirqd/220:40:282
3125899463,10cyclictest0-21swapper/200:03:412
3125899462,7cyclictest0-21swapper/221:50:392
3125899462,10cyclictest0-21swapper/221:03:312
3125899460,6cyclictest33-21ksoftirqd/220:50:002
3125899460,5cyclictest33-21ksoftirqd/223:35:172
134491460,3ptp4l3125999cyclictest22:18:383
3125999457,16cyclictest0-21swapper/319:55:203
31259994511,11cyclictest28766-21chrt21:20:563
3125899452,10cyclictest0-21swapper/223:06:162
3125899451,5cyclictest33-21ksoftirqd/221:05:162
3125899450,6cyclictest33-21ksoftirqd/223:15:302
31257994517,27cyclictest0-21swapper/100:30:491
134491450,11ptp4l0-21swapper/122:55:201
3125899440,6cyclictest33-21ksoftirqd/220:30:142
3125899440,5cyclictest33-21ksoftirqd/222:10:202
134491440,9ptp4l0-21swapper/023:59:570
134491440,9ptp4l0-21swapper/023:21:160
134491440,9ptp4l0-21swapper/022:49:080
134491440,9ptp4l0-21swapper/021:45:300
134491440,5ptp4l2461-21apt-get22:45:133
134491440,3ptp4l0-21swapper/219:42:222
134491440,12ptp4l9-21ksoftirqd/022:38:190
3125999433,10cyclictest0-21swapper/320:20:173
31259994312,10cyclictest27805-21chrt23:38:193
3125899433,6cyclictest33-21ksoftirqd/219:25:192
31258994332,4cyclictest33-21ksoftirqd/200:35:222
3125899431,6cyclictest0-21swapper/220:10:172
134491430,9ptp4l0-21swapper/023:04:570
134491430,8ptp4l0-21swapper/019:05:120
134491430,6ptp4l28335-21ls20:10:273
134491430,5ptp4l0-21swapper/323:45:133
134491430,5ptp4l0-21swapper/323:45:133
134491430,4ptp4l13223-21apt-get20:50:130
31259994211,10cyclictest7864-21taskset19:28:513
3125899422,6cyclictest33-21ksoftirqd/222:05:312
3125899421,9cyclictest0-21swapper/221:55:472
31257994227,5cyclictest25-21ksoftirqd/120:17:501
134491420,9ptp4l0-21swapper/019:58:370
134491420,9ptp4l0-21swapper/000:07:130
134491420,8ptp4l9-21ksoftirqd/021:35:550
134491420,6ptp4l3125699cyclictest00:10:240
134491420,5ptp4l0-21swapper/120:45:191
134491420,5ptp4l0-21swapper/022:00:150
134491420,4ptp4l32243-21apt-get22:40:131
134491420,4ptp4l24686-21apt-get22:25:143
134491420,4ptp4l0-21swapper/023:45:030
134491420,4ptp4l0-21swapper/023:45:020
31259994110,28cyclictest1530-21ntp_states23:50:243
31258994136,3cyclictest311rcuc/221:35:152
31258994135,4cyclictest33-21ksoftirqd/223:40:372
3125899412,5cyclictest0-21swapper/222:35:232
134491410,8ptp4l0-21swapper/019:36:340
134491410,7ptp4l9-21ksoftirqd/021:32:120
134491410,7ptp4l9-21ksoftirqd/000:37:370
134491410,6ptp4l0-21swapper/300:12:273
134491410,5ptp4l6796-21if_enp1s020:35:140
134491410,5ptp4l0-21swapper/323:10:163
134491410,5ptp4l0-21swapper/300:00:203
134491410,5ptp4l0-21swapper/021:15:180
134491410,5ptp4l0-21swapper/020:49:110
134491410,5ptp4l0-21swapper/000:00:130
134491410,4ptp4l5248-21/usr/sbin/munin20:30:253
134491410,4ptp4l3125699cyclictest20:55:350
134491410,4ptp4l21661-21iostat_ios23:25:170
134491410,4ptp4l0-21swapper/022:30:110
134491410,4ptp4l0-21swapper/020:21:310
134491410,4ptp4l0-21swapper/020:16:340
134491410,3ptp4l5138-21apt-get00:00:131
134491410,3ptp4l0-21swapper/100:22:451
134691400,9getstats0-21swapper/021:00:390
134491400,8ptp4l9-21ksoftirqd/019:47:500
134491400,5ptp4l5839-21/usr/sbin/munin22:50:221
134491400,5ptp4l0-21swapper/319:20:173
134491400,5ptp4l0-21swapper/121:50:231
134491400,5ptp4l0-21swapper/121:35:171
134491400,5ptp4l0-21swapper/023:50:140
134491400,5ptp4l0-21swapper/022:25:170
134491400,5ptp4l0-21swapper/019:10:160
134491400,4ptp4l9-21ksoftirqd/022:10:180
134491400,4ptp4l8778-21iostat_ios19:30:170
134491400,4ptp4l8772-21df21:50:130
134491400,4ptp4l22757-21users23:25:271
134491400,4ptp4l14531-21iostat23:10:191
134491400,4ptp4l0-21swapper/123:49:461
134491400,4ptp4l0-21swapper/123:49:461
134491400,4ptp4l0-21swapper/121:20:211
134491400,4ptp4l0-21swapper/121:10:261
134491400,4ptp4l0-21swapper/023:31:330
134491400,4ptp4l0-21swapper/023:10:170
134491400,4ptp4l0-21swapper/023:06:470
134491400,4ptp4l0-21swapper/021:23:010
134491400,4ptp4l0-21swapper/021:10:300
134491400,4ptp4l0-21swapper/019:51:590
134491400,4ptp4l0-21swapper/019:25:150
134491400,4ptp4l0-21swapper/000:16:040
134491400,4ptp4l0-21swapper/000:16:040
134491400,3ptp4l8400-21python22:55:270
134491400,3ptp4l2977-21users19:15:340
31257993917,20cyclictest3255-21kworker/1:200:17:091
31257993917,20cyclictest3255-21kworker/1:200:17:091
134491390,5ptp4l22609-21irqrtprio20:00:190
134491390,5ptp4l0-21swapper/119:20:121
134491390,5ptp4l0-21swapper/023:17:160
134491390,4ptp4l26028-21cpuspeed_turbos23:35:131
134491390,4ptp4l0-21swapper/322:55:223
134491390,4ptp4l0-21swapper/219:10:002
134491390,4ptp4l0-21swapper/123:30:211
134491390,4ptp4l0-21swapper/122:49:241
134491390,4ptp4l0-21swapper/122:16:021
134491390,4ptp4l0-21swapper/122:05:181
134491390,4ptp4l0-21swapper/120:32:061
134491390,4ptp4l0-21swapper/119:15:351
134491390,4ptp4l0-21swapper/119:10:271
134491390,4ptp4l0-21swapper/100:25:201
134491390,4ptp4l0-21swapper/023:35:110
134491390,4ptp4l0-21swapper/022:20:200
134491390,4ptp4l0-21swapper/022:15:250
134491390,4ptp4l0-21swapper/022:07:070
134491390,4ptp4l0-21swapper/021:55:230
134491390,4ptp4l0-21swapper/021:40:170
134491390,4ptp4l0-21swapper/021:25:100
134491390,4ptp4l0-21swapper/020:40:290
134491390,4ptp4l0-21swapper/020:25:100
134491390,4ptp4l0-21swapper/019:40:220
134491390,4ptp4l0-21swapper/019:20:500
134491390,4ptp4l0-21swapper/000:22:570
134491390,3ptp4l1301-21snmpd21:09:450
134491390,3ptp4l0-21swapper/023:40:210
31257993816,3cyclictest16691-21hddtemp_smartct23:15:191
134491380,5ptp4l0-21swapper/119:35:131
134491380,4ptp4l32649-21sed21:30:212
134491380,4ptp4l0-21swapper/322:40:013
134491380,4ptp4l0-21swapper/321:25:143
134491380,4ptp4l0-21swapper/122:26:091
134491380,4ptp4l0-21swapper/122:22:191
134491380,4ptp4l0-21swapper/122:10:161
134491380,4ptp4l0-21swapper/122:01:161
134491380,4ptp4l0-21swapper/121:55:271
134491380,4ptp4l0-21swapper/121:40:261
134491380,4ptp4l0-21swapper/121:30:191
134491380,4ptp4l0-21swapper/120:55:241
134491380,4ptp4l0-21swapper/120:14:591
134491380,4ptp4l0-21swapper/119:54:031
134491380,4ptp4l0-21swapper/100:10:251
134491380,4ptp4l0-21swapper/022:40:530
134491380,4ptp4l0-21swapper/020:05:510
134491380,3ptp4l24185-21apt-config20:05:001
134491380,3ptp4l0-21swapper/123:52:061
134491380,3ptp4l0-21swapper/121:49:581
134491370,4ptp4l0-21swapper/123:20:141
134491370,4ptp4l0-21swapper/122:32:281
134491370,4ptp4l0-21swapper/121:05:421
134491370,4ptp4l0-21swapper/121:05:011
134491370,4ptp4l0-21swapper/120:50:161
134491370,4ptp4l0-21swapper/119:25:261
134491370,3ptp4l0-21swapper/123:56:021
134491370,3ptp4l0-21swapper/123:05:261
134491370,3ptp4l0-21swapper/121:27:201
134491370,3ptp4l0-21swapper/121:15:261
134491370,3ptp4l0-21swapper/119:57:121
134491370,3ptp4l0-21swapper/119:45:271
134491370,3ptp4l0-21swapper/100:05:141
3125799367,28cyclictest3255-21kworker/1:200:35:391
31257993614,4cyclictest0-21swapper/120:20:131
134491360,4ptp4l0-21swapper/120:35:111
134491360,4ptp4l0-21swapper/119:40:191
134491360,4ptp4l0-21swapper/119:32:041
134491360,3ptp4l0-21swapper/123:41:211
134491360,3ptp4l0-21swapper/123:00:361
134491340,4ptp4l0-21swapper/120:06:021
134491340,3ptp4l0-21swapper/120:40:191
134491250,4ptp4l0-21swapper/120:25:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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