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2026-09-16 - 05:04
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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 rackdslot2.osadl.org (updated Wed Sep 16, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1762222430,12sleep30-21swapper/319:05:193
184292234171,22sleep00-21swapper/019:05:460
187512207172,23sleep10-21swapper/119:09:521
185762206172,21sleep20-21swapper/219:07:362
1905599714,20cyclictest909-21cat23:00:172
19056996830,5cyclictest41-21ksoftirqd/322:10:003
19056996830,5cyclictest41-21ksoftirqd/322:10:003
19055996811,23cyclictest15480-21latency_hist20:10:002
1905599611,19cyclictest0-21swapper/220:55:122
203582600,1sleep20-21swapper/220:20:002
193062590,5sleep119310-21phc2sys20:15:221
139291590,1ptp4l401ktimersoftd/319:15:143
139291580,1ptp4l401ktimersoftd/300:40:003
95972560,1sleep39601-21needreboot00:25:203
219302560,3sleep20-21swapper/223:45:162
1905599562,22cyclictest18786-21taskset21:24:392
1905599561,20cyclictest0-21swapper/222:13:252
19056995521,8cyclictest41-21ksoftirqd/320:05:143
19056995320,8cyclictest41-21ksoftirqd/323:00:243
19056995224,3cyclictest41-21ksoftirqd/319:10:233
19056995224,3cyclictest41-21ksoftirqd/319:10:233
19056995220,4cyclictest41-21ksoftirqd/320:40:143
19056995122,7cyclictest41-21ksoftirqd/319:25:203
19056995121,3cyclictest41-21ksoftirqd/321:30:223
19056995021,7cyclictest41-21ksoftirqd/300:20:143
19056995021,3cyclictest41-21ksoftirqd/321:10:233
19056994918,5cyclictest41-21ksoftirqd/323:40:153
19056994918,5cyclictest41-21ksoftirqd/323:40:153
19056994917,4cyclictest41-21ksoftirqd/323:30:013
19056994916,4cyclictest41-21ksoftirqd/320:30:003
19056994915,8cyclictest41-21ksoftirqd/319:55:253
139291490,1ptp4l401ktimersoftd/300:19:553
1905699486,4cyclictest41-21ksoftirqd/322:56:063
19056994820,3cyclictest41-21ksoftirqd/323:35:213
19056994818,4cyclictest41-21ksoftirqd/321:55:013
19056994816,4cyclictest41-21ksoftirqd/320:45:143
19056994716,4cyclictest41-21ksoftirqd/323:15:003
19056994715,4cyclictest41-21ksoftirqd/321:40:203
1905699463,4cyclictest41-21ksoftirqd/322:46:303
1905699463,4cyclictest41-21ksoftirqd/322:11:173
19056994618,4cyclictest41-21ksoftirqd/323:15:183
1905699461,4cyclictest41-21ksoftirqd/321:45:343
19056994613,4cyclictest41-21ksoftirqd/300:08:353
1905699459,4cyclictest41-21ksoftirqd/320:00:253
1905699458,4cyclictest41-21ksoftirqd/320:20:153
1905699454,4cyclictest41-21ksoftirqd/319:44:023
19056994518,6cyclictest41-21ksoftirqd/319:45:203
19056994517,7cyclictest41-21ksoftirqd/300:00:013
19056994514,4cyclictest41-21ksoftirqd/322:50:123
19056994514,3cyclictest41-21ksoftirqd/323:10:003
1905699446,7cyclictest41-21ksoftirqd/321:05:193
19056994416,7cyclictest41-21ksoftirqd/321:25:163
19056994412,7cyclictest41-21ksoftirqd/322:40:233
1905699440,3cyclictest217-21systemd-journal21:05:003
1905699438,8cyclictest41-21ksoftirqd/320:50:143
1905599431,29cyclictest19952-21taskset22:32:062
1905699428,7cyclictest41-21ksoftirqd/300:10:133
1905699427,3cyclictest41-21ksoftirqd/300:00:263
1905699424,5cyclictest41-21ksoftirqd/323:33:213
19056994237,3cyclictest41-21ksoftirqd/323:50:003
19056994236,3cyclictest41-21ksoftirqd/322:00:003
19056994216,6cyclictest41-21ksoftirqd/323:25:003
19056994214,8cyclictest41-21ksoftirqd/320:10:163
19056994211,10cyclictest41-21ksoftirqd/319:35:253
19053994236,3cyclictest9-21ksoftirqd/000:20:010
139291420,0ptp4l401ktimersoftd/320:56:013
1905699416,4cyclictest41-21ksoftirqd/300:34:193
1905699414,10cyclictest41-21ksoftirqd/322:33:523
19056994129,3cyclictest121rcu_preempt22:00:013
1905599411,29cyclictest6570-21taskset23:11:152
1905399416,3cyclictest9-21ksoftirqd/020:50:010
19053994136,3cyclictest9-21ksoftirqd/023:44:590
19053994136,3cyclictest9-21ksoftirqd/023:44:590
19053994136,3cyclictest9-21ksoftirqd/021:20:000
139291410,0ptp4l401ktimersoftd/320:18:353
1905699409,6cyclictest41-21ksoftirqd/322:35:123
1905699403,4cyclictest41-21ksoftirqd/322:17:143
19056994034,3cyclictest41-21ksoftirqd/319:55:013
19056994022,3cyclictest41-21ksoftirqd/322:25:183
19053994035,3cyclictest9-21ksoftirqd/021:40:000
19053994035,3cyclictest9-21ksoftirqd/019:20:000
19053994034,3cyclictest9-21ksoftirqd/022:50:000
135191400,1getstats0-21swapper/322:23:393
1905699394,5cyclictest41-21ksoftirqd/319:30:023
1905699393,7cyclictest41-21ksoftirqd/320:35:003
1905699393,4cyclictest41-21ksoftirqd/321:23:473
19056993934,3cyclictest41-21ksoftirqd/320:35:193
1905699391,5cyclictest41-21ksoftirqd/323:54:153
1905699391,4cyclictest41-21ksoftirqd/321:17:053
1905699390,5cyclictest41-21ksoftirqd/319:23:043
1905599394,32cyclictest26155-21cat19:25:012
1905599394,21cyclictest20515-21apache222:25:012
19055993924,12cyclictest33-21ksoftirqd/223:54:562
1905599391,24cyclictest22676-21/usr/sbin/munin19:15:232
19053993934,3cyclictest9-21ksoftirqd/022:45:010
19053993934,3cyclictest9-21ksoftirqd/019:45:000
19053993933,3cyclictest9-21ksoftirqd/020:30:000
19053993933,3cyclictest9-21ksoftirqd/020:05:000
19053993930,3cyclictest9-21ksoftirqd/023:00:090
1905699385,9cyclictest41-21ksoftirqd/321:35:223
19055993832,4cyclictest33-21ksoftirqd/222:50:332
1905599381,23cyclictest9439-21date23:20:012
1905599381,16cyclictest1312-21snmpd19:59:562
19054993832,4cyclictest25-21ksoftirqd/122:45:341
19054993832,4cyclictest25-21ksoftirqd/122:32:341
19054993832,3cyclictest25-21ksoftirqd/100:10:271
19054993831,4cyclictest25-21ksoftirqd/121:50:021
1905399383,4cyclictest121rcu_preempt19:50:250
19053993834,2cyclictest9-21ksoftirqd/020:15:000
19053993833,2cyclictest26259-21basename19:25:120
19053993832,4cyclictest9-21ksoftirqd/022:57:330
19053993831,4cyclictest25916-21cron23:54:590
19054993730,4cyclictest25-21ksoftirqd/119:37:351
19053993733,2cyclictest9-21ksoftirqd/021:30:000
19053993732,3cyclictest9-21ksoftirqd/022:35:160
19053993732,3cyclictest9-21ksoftirqd/022:30:010
19053993732,3cyclictest9-21ksoftirqd/020:20:000
19053993732,2cyclictest9-21ksoftirqd/022:25:010
19053993731,4cyclictest9-21ksoftirqd/022:15:520
19053993725,4cyclictest9-21ksoftirqd/000:20:550
19053993719,10cyclictest9-21ksoftirqd/000:00:010
19055993631,3cyclictest33-21ksoftirqd/220:48:092
19055993630,4cyclictest33-21ksoftirqd/221:13:402
19055993630,4cyclictest33-21ksoftirqd/219:45:342
19055993630,3cyclictest33-21ksoftirqd/222:00:262
19055993615,15cyclictest0-21swapper/222:40:532
1905599360,2cyclictest0-21swapper/221:30:172
19054993631,3cyclictest25-21ksoftirqd/121:01:361
19054993630,4cyclictest25-21ksoftirqd/123:23:291
19054993630,4cyclictest25-21ksoftirqd/121:23:381
19054993630,4cyclictest25-21ksoftirqd/100:26:351
19054993629,4cyclictest25-21ksoftirqd/122:40:111
1905499362,31cyclictest291212chrt21:45:151
1905399366,3cyclictest9-21ksoftirqd/021:50:220
1905399363,3cyclictest121rcu_preempt19:55:270
1905399363,3cyclictest121rcu_preempt19:30:180
19053993632,2cyclictest9-21ksoftirqd/021:00:000
19053993631,3cyclictest9-21ksoftirqd/023:29:590
19053993631,3cyclictest9-21ksoftirqd/022:30:130
19053993631,3cyclictest9-21ksoftirqd/021:40:140
19053993631,3cyclictest9-21ksoftirqd/020:35:000
19053993631,3cyclictest9-21ksoftirqd/000:40:000
19053993630,3cyclictest9-21ksoftirqd/021:05:000
19053993630,3cyclictest9-21ksoftirqd/000:30:000
19053993629,4cyclictest9-21ksoftirqd/020:43:490
19053993627,7cyclictest9-21ksoftirqd/019:35:130
19053993625,4cyclictest9-21ksoftirqd/000:12:410
19053993623,5cyclictest9-21ksoftirqd/000:01:080
19055993529,4cyclictest33-21ksoftirqd/222:16:112
19055993529,4cyclictest33-21ksoftirqd/200:22:562
19055993529,3cyclictest33-21ksoftirqd/219:31:492
19054993529,4cyclictest25-21ksoftirqd/122:09:071
19054993529,4cyclictest25-21ksoftirqd/122:09:071
19054993529,4cyclictest25-21ksoftirqd/122:01:251
19054993529,4cyclictest25-21ksoftirqd/120:50:491
19054993529,4cyclictest25-21ksoftirqd/120:23:331
19054993529,4cyclictest25-21ksoftirqd/120:08:041
19054993529,3cyclictest25-21ksoftirqd/120:02:571
19054993528,4cyclictest25-21ksoftirqd/123:48:211
19054993528,4cyclictest25-21ksoftirqd/119:11:351
19054993528,4cyclictest25-21ksoftirqd/119:11:351
19053993530,3cyclictest9-21ksoftirqd/023:20:180
19053993530,3cyclictest9-21ksoftirqd/000:05:200
19053993530,2cyclictest9-21ksoftirqd/021:45:190
19053993529,4cyclictest9-21ksoftirqd/023:33:460
19053993529,4cyclictest9-21ksoftirqd/021:30:110
19053993529,3cyclictest9-21ksoftirqd/022:00:150
19053993529,3cyclictest9-21ksoftirqd/021:15:000
19053993528,4cyclictest9-21ksoftirqd/023:45:580
19053993528,4cyclictest9-21ksoftirqd/019:45:080
41298340,2rtkit-daemon411-21rtkit-daemon23:06:171
19055993429,3cyclictest33-21ksoftirqd/219:10:482
19055993429,3cyclictest33-21ksoftirqd/219:10:482
19055993428,4cyclictest33-21ksoftirqd/223:59:202
19055993428,4cyclictest33-21ksoftirqd/223:05:282
19055993428,4cyclictest33-21ksoftirqd/222:57:392
19055993428,4cyclictest33-21ksoftirqd/222:26:302
19055993428,4cyclictest33-21ksoftirqd/200:04:012
1905599341,30cyclictest7502-21unixbench_multi19:50:272
19054993429,3cyclictest25-21ksoftirqd/120:58:191
19054993429,3cyclictest25-21ksoftirqd/120:13:291
19054993428,4cyclictest25-21ksoftirqd/119:29:531
19054993428,4cyclictest25-21ksoftirqd/100:21:171
19054993428,3cyclictest25-21ksoftirqd/121:15:131
19054993428,3cyclictest25-21ksoftirqd/119:56:321
19054993427,4cyclictest25-21ksoftirqd/123:26:591
1905399346,5cyclictest9-21ksoftirqd/023:10:230
1905399345,3cyclictest9-21ksoftirqd/023:20:000
1905399344,3cyclictest121rcu_preempt20:55:010
19053993430,3cyclictest9-21ksoftirqd/019:10:140
19053993430,3cyclictest9-21ksoftirqd/019:10:140
19053993430,2cyclictest9-21ksoftirqd/020:35:130
19053993429,3cyclictest9-21ksoftirqd/022:10:000
19053993429,3cyclictest9-21ksoftirqd/022:09:590
19053993427,4cyclictest9-21ksoftirqd/020:08:510
1905399340,2cyclictest121rcu_preempt23:35:180
19055993328,3cyclictest33-21ksoftirqd/221:04:552
19055993328,3cyclictest33-21ksoftirqd/220:13:372
19055993327,4cyclictest33-21ksoftirqd/223:36:412
19055993327,4cyclictest33-21ksoftirqd/222:47:362
19055993327,4cyclictest33-21ksoftirqd/221:52:482
19055993327,4cyclictest33-21ksoftirqd/221:40:442
19055993327,4cyclictest33-21ksoftirqd/219:29:262
19055993327,3cyclictest33-21ksoftirqd/200:05:022
19054993328,3cyclictest25-21ksoftirqd/123:17:321
19054993328,3cyclictest25-21ksoftirqd/122:20:551
19054993327,4cyclictest25-21ksoftirqd/123:39:141
19054993327,4cyclictest25-21ksoftirqd/121:56:281
19054993327,4cyclictest25-21ksoftirqd/121:27:471
19054993327,4cyclictest25-21ksoftirqd/121:12:071
19054993327,4cyclictest25-21ksoftirqd/120:31:031
19054993327,4cyclictest25-21ksoftirqd/119:43:371
19054993327,4cyclictest25-21ksoftirqd/119:33:101
19054993327,4cyclictest25-21ksoftirqd/100:37:591
19054993327,4cyclictest25-21ksoftirqd/100:06:421
19054993326,4cyclictest25-21ksoftirqd/122:57:461
19054993326,4cyclictest25-21ksoftirqd/120:47:561
19053993329,3cyclictest9-21ksoftirqd/021:55:130
19053993329,2cyclictest9-21ksoftirqd/000:30:220
19053993328,3cyclictest9-21ksoftirqd/022:55:000
19053993328,3cyclictest9-21ksoftirqd/021:05:130
1905399331,3cyclictest9-21ksoftirqd/021:20:200
19055993227,3cyclictest33-21ksoftirqd/223:31:052
19055993227,3cyclictest33-21ksoftirqd/221:45:542
19055993227,3cyclictest33-21ksoftirqd/221:26:132
19055993227,3cyclictest33-21ksoftirqd/220:44:362
19055993227,3cyclictest33-21ksoftirqd/220:24:022
19055993227,3cyclictest33-21ksoftirqd/200:39:452
19055993226,4cyclictest33-21ksoftirqd/223:41:592
19055993226,4cyclictest33-21ksoftirqd/223:41:592
19055993226,4cyclictest33-21ksoftirqd/223:24:542
19055993226,4cyclictest33-21ksoftirqd/221:37:552
19055993226,4cyclictest33-21ksoftirqd/220:54:022
19055993226,4cyclictest33-21ksoftirqd/220:38:502
19055993226,4cyclictest33-21ksoftirqd/220:26:062
19054993227,3cyclictest25-21ksoftirqd/123:04:441
19054993227,3cyclictest25-21ksoftirqd/121:08:571
19054993227,3cyclictest25-21ksoftirqd/120:25:401
19054993227,3cyclictest25-21ksoftirqd/100:16:121
19054993226,4cyclictest25-21ksoftirqd/119:23:111
19054993225,4cyclictest25-21ksoftirqd/122:39:081
19053993228,2cyclictest9-21ksoftirqd/019:24:470
19053993227,3cyclictest9-21ksoftirqd/023:05:200
19053993226,4cyclictest9-21ksoftirqd/022:11:350
19053993226,3cyclictest9-21ksoftirqd/020:20:160
19055993126,3cyclictest33-21ksoftirqd/200:30:232
1905599311,25cyclictest2318-21/usr/sbin/munin21:55:212
19055993112,16cyclictest16471-21sendmail21:20:002
1905599310,3cyclictest12974-21awk20:05:002
19054993126,3cyclictest25-21ksoftirqd/122:53:141
1905599307,20cyclictest1312-21snmpd23:29:512
19055993025,3cyclictest33-21ksoftirqd/219:36:102
19055993025,3cyclictest33-21ksoftirqd/200:26:252
19055993024,4cyclictest33-21ksoftirqd/219:40:532
19055993024,4cyclictest33-21ksoftirqd/200:17:462
19054993025,3cyclictest25-21ksoftirqd/123:44:061
19054993025,3cyclictest25-21ksoftirqd/123:44:061
19054993025,3cyclictest25-21ksoftirqd/122:15:101
19054993025,3cyclictest25-21ksoftirqd/121:42:361
19054993025,3cyclictest25-21ksoftirqd/120:44:311
19054993025,3cyclictest25-21ksoftirqd/119:48:491
19055992923,3cyclictest33-21ksoftirqd/222:35:092
1905599291,22cyclictest6185-21apt-get22:05:112
1905599291,22cyclictest6185-21apt-get22:05:102
19055992911,15cyclictest26390-21date20:30:222
19055992910,16cyclictest11390-21seq21:06:122
19054992924,3cyclictest25-21ksoftirqd/122:13:461
19054992924,3cyclictest25-21ksoftirqd/100:30:531
1905599280,1cyclictest0-21swapper/200:10:172
19054992823,3cyclictest25-21ksoftirqd/123:32:121
19054992823,3cyclictest25-21ksoftirqd/119:55:001
19054992823,3cyclictest25-21ksoftirqd/119:17:231
281552270,2sleep10-21swapper/120:35:161
19054992621,3cyclictest25-21ksoftirqd/123:51:551
19054992621,3cyclictest25-21ksoftirqd/100:00:201
19054992419,3cyclictest25-21ksoftirqd/123:58:191
19054992318,3cyclictest25-21ksoftirqd/121:39:161
19054992217,3cyclictest25-21ksoftirqd/123:10:571
19054992216,4cyclictest25-21ksoftirqd/122:27:091
19054992116,3cyclictest25-21ksoftirqd/121:33:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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