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2026-07-12 - 13:48
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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 rackdslot3.osadl.org (updated Sun Jul 12, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
987622590,3sleep0111rcuc/019:09:190
987622590,3sleep0111rcuc/019:09:190
139491207173,22phc2sys0-21swapper/319:07:103
139491207173,22phc2sys0-21swapper/319:07:103
7182203169,22sleep10-21swapper/119:08:571
7182203169,22sleep10-21swapper/119:08:571
6462201168,22sleep20-21swapper/219:08:302
6462201168,22sleep20-21swapper/219:08:302
1837721670,4sleep12043099cyclictest21:50:191
2360521200,5sleep32043399cyclictest00:15:233
139391820,2ptp4l391rcuc/319:10:213
139391820,2ptp4l391rcuc/319:10:213
2042999699,20cyclictest571-21awk20:05:220
20429996310,10cyclictest8302-21od19:10:510
20429996310,10cyclictest8302-21od19:10:510
20429996210,15cyclictest23650-21/usr/sbin/munin23:10:260
57622610,7sleep32043399cyclictest20:15:253
2042999617,10cyclictest25302-21if_err_enp4s022:05:180
2042999614,16cyclictest0-21swapper/021:05:170
20429996111,9cyclictest27026-21apt-config19:55:010
20429996110,9cyclictest27623-21od19:15:100
2042999609,9cyclictest30501-21latency00:30:190
20429996010,9cyclictest32460-21sed23:25:270
2042999599,8cyclictest11575-21/usr/sbin/munin20:30:250
20429995911,16cyclictest21896-21irqrtprio20:50:200
20429995911,16cyclictest21896-21irqrtprio20:50:200
2042999589,9cyclictest21035-21latency_hist23:05:010
2042999585,17cyclictest21159-21grep21:55:260
2042999578,9cyclictest5964-21sed20:15:260
20429995710,16cyclictest22311-21cut19:45:130
304532560,4sleep2311rcuc/219:10:422
304532560,4sleep2311rcuc/219:10:422
2042999566,17cyclictest0-21swapper/019:40:590
230242550,5sleep323028-21irqrtprio22:00:193
2043399553,15cyclictest21352-21cpuspeed23:05:143
2042999558,10cyclictest8027-21cat23:45:120
2043199530,3cyclictest120702chrt19:21:252
2042999533,16cyclictest0-21swapper/022:40:220
13162520,3sleep229117-21looper19:15:182
62012510,5sleep16186-21sh19:11:491
62012510,5sleep16186-21sh19:11:491
2042999516,7cyclictest30059-21ls23:20:260
134391500,1getstats22047-1kworker/3:2H23:15:153
134391500,1getstats22047-1kworker/3:2H23:15:153
2043399499,4cyclictest41-21ksoftirqd/300:21:393
2042999499,11cyclictest6622-21/usr/sbin/munin21:25:210
2042999498,9cyclictest16072-21needreboot19:30:230
2042999495,9cyclictest0-21swapper/020:25:170
2042999488,7cyclictest5604-21sensors_temp22:30:230
2042999488,7cyclictest3430-21df_inode21:20:150
2042999486,7cyclictest32207-21ls21:10:270
2043199470,2cyclictest0-21swapper/223:50:252
2042999479,7cyclictest10536-21diskstats21:35:130
2042999478,7cyclictest31292-21sshd22:17:000
2043199460,3cyclictest291272sleep200:27:482
2042999466,7cyclictest12675-21apt-get23:55:130
20429994610,16cyclictest32322-21awk00:35:170
2043199450,2cyclictest62592sleep222:34:232
20429994512,12cyclictest2182-21awk22:25:170
2043199441,3cyclictest14574-21taskset21:41:212
2043199441,3cyclictest0-21swapper/220:53:272
2043199441,3cyclictest0-21swapper/220:53:262
2043199441,3cyclictest0-21swapper/219:59:442
2043199440,3cyclictest26528-21chrt19:53:342
2043199440,2cyclictest207992sleep223:04:372
2042999449,15cyclictest6546-21/usr/sbin/munin22:35:100
2042999445,7cyclictest29495-21apt-get20:00:120
20433994316,8cyclictest41-21ksoftirqd/323:20:403
2043199430,3cyclictest74822sleep223:42:242
2043199430,2cyclictest83782sleep222:36:162
2043199430,2cyclictest171942sleep221:48:472
2043199430,2cyclictest14912sleep220:08:542
2043199430,2cyclictest144792sleep223:56:082
139391430,0ptp4l401ktimersoftd/320:36:313
2043199423,2cyclictest0-21swapper/219:29:112
20430994237,3cyclictest25-21ksoftirqd/122:59:591
2042999428,15cyclictest26744-21runrttasks00:22:370
139391420,0ptp4l401ktimersoftd/323:30:283
139391420,0ptp4l401ktimersoftd/321:35:293
139391420,0ptp4l401ktimersoftd/300:36:213
2042999417,8cyclictest2978-21ls20:10:190
139391410,0ptp4l401ktimersoftd/323:55:203
139391410,0ptp4l401ktimersoftd/323:35:213
57898400,7rtkit-daemon0-21swapper/122:08:511
20430994036,3cyclictest25-21ksoftirqd/121:40:001
2042999408,11cyclictest13945-21cat20:35:110
2042999407,7cyclictest16678-21ssh21:45:270
139391400,0ptp4l401ktimersoftd/300:00:193
57898390,7rtkit-daemon0-21swapper/122:31:141
20433993913,8cyclictest41-21ksoftirqd/300:33:423
20430993934,3cyclictest25-21ksoftirqd/122:40:011
2042999395,5cyclictest0-21swapper/019:35:260
139391390,0ptp4l401ktimersoftd/319:25:293
2043399382,5cyclictest41-21ksoftirqd/322:05:103
2043399382,5cyclictest41-21ksoftirqd/321:27:133
2043399382,5cyclictest41-21ksoftirqd/320:56:323
20433993814,4cyclictest41-21ksoftirqd/319:59:313
20433993812,8cyclictest41-21ksoftirqd/323:26:483
2043199380,3cyclictest110032sleep222:44:152
20430993833,3cyclictest25-21ksoftirqd/120:55:001
20430993833,3cyclictest25-21ksoftirqd/120:55:001
2043199373,19cyclictest0-21swapper/221:57:222
2043199372,2cyclictest0-21swapper/221:51:442
2043199370,3cyclictest8688-21chrt20:24:062
2043199370,3cyclictest31429-21taskset20:02:412
2043199370,3cyclictest111132sleep220:27:082
2043199370,2cyclictest242532sleep200:16:252
2043199370,2cyclictest216192chrt19:41:222
2043199370,2cyclictest207112sleep220:47:422
2043199370,2cyclictest149592sleep219:30:112
2043199370,2cyclictest13272sleep222:22:452
20430993733,3cyclictest25-21ksoftirqd/119:35:001
20430993732,3cyclictest25-21ksoftirqd/119:15:041
20430993731,4cyclictest25-21ksoftirqd/121:46:541
20430993731,4cyclictest25-21ksoftirqd/120:44:471
20430993731,4cyclictest25-21ksoftirqd/120:13:151
20430993731,3cyclictest25-21ksoftirqd/123:50:011
2042999375,7cyclictest21581-21df23:05:150
20431993630,4cyclictest33-21ksoftirqd/222:47:242
20431993630,4cyclictest33-21ksoftirqd/200:10:562
20431993630,4cyclictest33-21ksoftirqd/200:10:562
20431993614,19cyclictest33-21ksoftirqd/223:05:592
2043199360,3cyclictest30188-21chrt21:07:312
2043199360,2cyclictest72082sleep221:25:572
2043199360,2cyclictest62372sleep220:18:162
2043199360,2cyclictest266782sleep222:08:332
2043199360,2cyclictest168892sleep200:00:412
20430993630,4cyclictest25-21ksoftirqd/122:19:551
20430993630,4cyclictest25-21ksoftirqd/121:32:501
20430993630,4cyclictest25-21ksoftirqd/119:44:541
20430993630,4cyclictest25-21ksoftirqd/100:23:391
20429993630,4cyclictest9-21ksoftirqd/022:52:120
57898350,2rtkit-daemon0-21swapper/120:35:161
20433993530,3cyclictest41-21ksoftirqd/322:25:293
20433993530,3cyclictest41-21ksoftirqd/322:22:583
2043399352,4cyclictest41-21ksoftirqd/300:29:063
20431993529,4cyclictest33-21ksoftirqd/223:17:252
20431993529,4cyclictest33-21ksoftirqd/223:17:252
20431993529,4cyclictest33-21ksoftirqd/222:02:192
20431993529,4cyclictest33-21ksoftirqd/200:38:112
2043199350,3cyclictest2895-21taskset23:34:342
2043199350,3cyclictest24167-21taskset19:48:362
20430993530,3cyclictest25-21ksoftirqd/121:05:011
20430993530,3cyclictest25-21ksoftirqd/100:40:011
20430993529,4cyclictest25-21ksoftirqd/123:36:441
20430993529,4cyclictest25-21ksoftirqd/123:10:341
20430993529,4cyclictest25-21ksoftirqd/123:00:351
20430993529,4cyclictest25-21ksoftirqd/121:15:001
2042999356,11cyclictest6597-21meminfo23:40:200
20433993429,3cyclictest41-21ksoftirqd/323:12:073
20433993429,3cyclictest41-21ksoftirqd/321:15:133
20433993428,4cyclictest41-21ksoftirqd/323:44:023
20431993429,3cyclictest33-21ksoftirqd/223:25:512
20431993429,3cyclictest33-21ksoftirqd/221:03:022
20430993429,3cyclictest25-21ksoftirqd/121:30:001
20430993429,3cyclictest25-21ksoftirqd/119:48:491
20430993429,3cyclictest25-21ksoftirqd/100:30:121
20430993428,4cyclictest25-21ksoftirqd/123:25:411
20430993428,4cyclictest25-21ksoftirqd/123:07:411
20430993428,4cyclictest25-21ksoftirqd/122:54:121
20430993428,4cyclictest25-21ksoftirqd/122:22:481
20430993428,4cyclictest25-21ksoftirqd/120:26:421
20430993428,4cyclictest25-21ksoftirqd/120:02:401
2042999349,15cyclictest17728-21/usr/sbin/munin22:55:260
2042999344,21cyclictest0-21swapper/000:10:250
2042999344,21cyclictest0-21swapper/000:10:250
2042999344,20cyclictest0-21swapper/021:15:240
20429993428,4cyclictest9-21ksoftirqd/023:16:470
20429993428,4cyclictest9-21ksoftirqd/023:16:470
20429993428,4cyclictest9-21ksoftirqd/022:11:080
20429993428,4cyclictest9-21ksoftirqd/021:52:100
20429993428,4cyclictest9-21ksoftirqd/000:15:510
20433993328,3cyclictest41-21ksoftirqd/322:45:423
20433993328,3cyclictest41-21ksoftirqd/319:19:553
20433993327,4cyclictest41-21ksoftirqd/322:58:033
20433993327,4cyclictest41-21ksoftirqd/321:22:173
20433993327,4cyclictest41-21ksoftirqd/320:24:523
20433993327,4cyclictest41-21ksoftirqd/320:03:303
20431993327,4cyclictest33-21ksoftirqd/221:20:112
20430993328,3cyclictest25-21ksoftirqd/120:25:001
20430993328,3cyclictest25-21ksoftirqd/120:05:431
20430993328,3cyclictest25-21ksoftirqd/100:10:111
20430993328,3cyclictest25-21ksoftirqd/100:10:111
20430993327,4cyclictest25-21ksoftirqd/123:55:461
20430993327,4cyclictest25-21ksoftirqd/122:00:001
20430993327,4cyclictest25-21ksoftirqd/121:55:031
20430993326,5cyclictest25-21ksoftirqd/123:53:251
2042999334,18cyclictest0-21swapper/023:50:140
2042999334,18cyclictest0-21swapper/022:20:240
2042999333,18cyclictest0-21swapper/023:30:140
20429993328,3cyclictest9-21ksoftirqd/020:43:340
20429993327,4cyclictest9-21ksoftirqd/021:03:440
20429993327,4cyclictest9-21ksoftirqd/020:59:180
20429993327,4cyclictest9-21ksoftirqd/000:05:450
20433993229,2cyclictest41-21ksoftirqd/321:50:253
20433993227,3cyclictest41-21ksoftirqd/321:55:153
20433993227,3cyclictest41-21ksoftirqd/321:34:343
20433993227,3cyclictest41-21ksoftirqd/321:06:203
20433993226,4cyclictest41-21ksoftirqd/321:14:373
20433993226,4cyclictest41-21ksoftirqd/320:07:153
20431993226,4cyclictest33-21ksoftirqd/223:23:472
20431993226,4cyclictest33-21ksoftirqd/222:11:542
20431993226,4cyclictest33-21ksoftirqd/220:40:112
2043199322,28cyclictest13210-21kworker/2:122:55:222
2043199320,4cyclictest3185-21apt-get23:35:132
20430993227,3cyclictest25-21ksoftirqd/119:40:001
20430993227,3cyclictest25-21ksoftirqd/119:25:211
20430993227,3cyclictest25-21ksoftirqd/100:05:291
20430993227,3cyclictest25-21ksoftirqd/100:01:431
20430993226,4cyclictest25-21ksoftirqd/123:20:101
20430993226,4cyclictest25-21ksoftirqd/120:19:241
20430993226,4cyclictest25-21ksoftirqd/100:29:491
2042999324,17cyclictest0-21swapper/022:00:210
20429993226,4cyclictest9-21ksoftirqd/022:47:460
20429993226,4cyclictest9-21ksoftirqd/021:32:200
20429993226,4cyclictest9-21ksoftirqd/019:52:110
20433993125,4cyclictest41-21ksoftirqd/319:39:473
20433993124,5cyclictest41-21ksoftirqd/323:00:063
20431993126,3cyclictest33-21ksoftirqd/223:14:342
20431993126,3cyclictest33-21ksoftirqd/221:35:412
20431993125,4cyclictest33-21ksoftirqd/222:27:332
20431993125,4cyclictest33-21ksoftirqd/221:11:002
20431993125,4cyclictest33-21ksoftirqd/220:38:192
2043199310,3cyclictest207-21systemd-journal21:20:012
20430993127,3cyclictest25-21ksoftirqd/123:20:001
20430993127,3cyclictest25-21ksoftirqd/123:20:001
20430993126,3cyclictest25-21ksoftirqd/122:45:121
20430993126,3cyclictest25-21ksoftirqd/121:40:551
20430993126,3cyclictest25-21ksoftirqd/121:06:011
20430993126,3cyclictest25-21ksoftirqd/120:48:561
20430993126,3cyclictest25-21ksoftirqd/119:54:061
20430993125,4cyclictest25-21ksoftirqd/122:28:581
20430993125,4cyclictest25-21ksoftirqd/119:24:411
20430993125,3cyclictest25-21ksoftirqd/121:20:271
2042999314,18cyclictest0-21swapper/000:00:170
20429993125,4cyclictest9-21ksoftirqd/020:20:550
2043399304,4cyclictest41-21ksoftirqd/322:32:133
20433993025,3cyclictest41-21ksoftirqd/320:54:443
20433993025,3cyclictest41-21ksoftirqd/320:54:443
20433993025,3cyclictest41-21ksoftirqd/320:27:173
20433993025,3cyclictest41-21ksoftirqd/319:24:183
20433993014,8cyclictest41-21ksoftirqd/300:11:353
20433993014,8cyclictest41-21ksoftirqd/300:11:353
20433993013,5cyclictest41-21ksoftirqd/320:34:273
2043199306,22cyclictest25214-21kworker/2:100:32:052
2043199303,26cyclictest19101-21kworker/2:223:47:332
20431993025,3cyclictest33-21ksoftirqd/220:57:432
2043199302,27cyclictest14489-21kworker/2:121:30:112
2043199302,26cyclictest19101-21kworker/2:200:20:132
2043199300,4cyclictest18423-21chrt19:35:212
2043199300,3cyclictest31661-21date22:20:012
20430993026,3cyclictest25-21ksoftirqd/119:55:131
20430993025,3cyclictest25-21ksoftirqd/123:43:261
20430993025,3cyclictest25-21ksoftirqd/100:20:011
20430993024,4cyclictest25-21ksoftirqd/120:31:281
20429993024,4cyclictest9-21ksoftirqd/021:40:300
20429993024,4cyclictest9-21ksoftirqd/000:28:590
20433992923,4cyclictest41-21ksoftirqd/321:49:483
20433992923,4cyclictest41-21ksoftirqd/321:40:423
20433992923,4cyclictest41-21ksoftirqd/321:04:233
20433992923,4cyclictest41-21ksoftirqd/300:07:113
20433992922,5cyclictest41-21ksoftirqd/319:45:093
2043199296,22cyclictest433-21kworker/2:220:10:172
20431992910,16cyclictest13880-21sed20:35:002
20430992924,3cyclictest25-21ksoftirqd/123:32:151
20430992924,3cyclictest25-21ksoftirqd/121:18:031
20430992923,4cyclictest25-21ksoftirqd/120:55:511
20429992923,4cyclictest9-21ksoftirqd/023:37:490
20433992823,3cyclictest41-21ksoftirqd/319:32:453
20433992822,4cyclictest41-21ksoftirqd/323:49:193
20433992813,4cyclictest41-21ksoftirqd/323:50:223
2043199283,23cyclictest19101-21kworker/2:200:05:022
20430992822,4cyclictest25-21ksoftirqd/122:10:481
20429992822,4cyclictest9-21ksoftirqd/019:23:150
139391280,0ptp4l401ktimersoftd/322:40:553
20433992724,2cyclictest41-21ksoftirqd/322:35:283
20433992722,3cyclictest41-21ksoftirqd/320:49:533
20433992722,3cyclictest41-21ksoftirqd/320:11:363
20433992721,4cyclictest41-21ksoftirqd/320:41:293
20431992722,3cyclictest33-21ksoftirqd/222:51:412
20430992722,3cyclictest25-21ksoftirqd/122:43:251
2043399265,8cyclictest41-21ksoftirqd/322:50:133
20433992622,3cyclictest41-21ksoftirqd/319:40:193
20433992614,3cyclictest41-21ksoftirqd/319:51:353
20429992620,4cyclictest9-21ksoftirqd/019:25:040
20433992521,2cyclictest41-21ksoftirqd/322:10:203
139391250,0ptp4l401ktimersoftd/322:15:193
20429992313,7cyclictest18962-21/usr/sbin/munin20:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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