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2026-03-11 - 08:44
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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 rackdslot4.osadl.org (updated Wed Mar 11, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591205171,23phc2sys0-21swapper/319:08:343
250992201168,22sleep10-21swapper/119:08:481
251302199165,22sleep20-21swapper/219:09:132
249292199166,22sleep00-21swapper/019:06:340
397321650,6sleep12563299cyclictest23:50:121
1927821440,5sleep02563199cyclictest21:05:240
138491700,0ptp4l401ktimersoftd/322:10:123
25633996632,7cyclictest33-21ksoftirqd/200:26:452
323552610,2sleep30-21swapper/322:35:263
25633996126,6cyclictest33-21ksoftirqd/220:50:252
2563299615,16cyclictest15275-21latency_hist21:00:001
2563299605,16cyclictest23645-21/usr/sbin/munin20:10:161
138491600,1ptp4l401ktimersoftd/323:15:263
25633995927,6cyclictest33-21ksoftirqd/200:10:022
25633995926,9cyclictest33-21ksoftirqd/219:45:002
25633995923,6cyclictest33-21ksoftirqd/221:20:212
25633995829,10cyclictest33-21ksoftirqd/200:15:142
25633995828,4cyclictest33-21ksoftirqd/221:35:012
25633995824,4cyclictest33-21ksoftirqd/223:10:132
25633995728,4cyclictest33-21ksoftirqd/200:35:142
25633995723,8cyclictest33-21ksoftirqd/220:15:142
2563299572,16cyclictest0-21swapper/122:55:141
25633995627,9cyclictest33-21ksoftirqd/220:00:192
25633995627,9cyclictest33-21ksoftirqd/200:20:132
2563299567,16cyclictest19808-21awk22:10:231
2563299565,10cyclictest23111-21cut21:15:141
2563399557,10cyclictest33-21ksoftirqd/219:10:242
25633995527,5cyclictest33-21ksoftirqd/223:20:142
25633995524,8cyclictest33-21ksoftirqd/200:05:022
25633995522,8cyclictest33-21ksoftirqd/222:20:132
25633995522,5cyclictest33-21ksoftirqd/221:50:222
2563299555,16cyclictest25706-21expr23:30:131
2563299553,16cyclictest0-21swapper/120:20:141
2563299553,15cyclictest0-21swapper/120:05:141
17912550,2sleep00-21swapper/019:25:190
25633995427,9cyclictest33-21ksoftirqd/219:55:232
25633995426,8cyclictest33-21ksoftirqd/221:05:192
25633995420,5cyclictest33-21ksoftirqd/223:25:222
138491540,39ptp4l41-21ksoftirqd/319:40:133
25633995320,10cyclictest33-21ksoftirqd/222:35:252
2563399524,4cyclictest33-21ksoftirqd/221:30:252
25633995220,5cyclictest33-21ksoftirqd/222:00:132
2563299525,10cyclictest20345-21timerwakeupswit00:20:271
2563399515,8cyclictest33-21ksoftirqd/223:35:002
2563399515,5cyclictest33-21ksoftirqd/220:05:142
2563399515,10cyclictest33-21ksoftirqd/222:10:182
2563399514,10cyclictest33-21ksoftirqd/222:05:012
2563399513,9cyclictest33-21ksoftirqd/220:40:192
2563399513,6cyclictest33-21ksoftirqd/222:20:002
25633995124,9cyclictest33-21ksoftirqd/219:45:182
25633995123,7cyclictest33-21ksoftirqd/220:45:152
2563399510,6cyclictest33-21ksoftirqd/220:25:242
2563299514,16cyclictest9365-21mailstats20:45:241
2563299512,16cyclictest0-21swapper/121:55:151
2563399506,4cyclictest33-21ksoftirqd/221:25:112
2563399505,9cyclictest33-21ksoftirqd/223:05:192
2563399505,9cyclictest33-21ksoftirqd/219:20:192
2563399505,9cyclictest33-21ksoftirqd/219:20:192
2563399505,6cyclictest33-21ksoftirqd/222:50:252
2563399504,9cyclictest33-21ksoftirqd/222:25:162
2563399503,5cyclictest33-21ksoftirqd/200:10:252
25633995023,8cyclictest33-21ksoftirqd/223:00:172
25633995022,8cyclictest33-21ksoftirqd/221:20:002
25633995017,6cyclictest33-21ksoftirqd/200:30:232
70662490,2sleep30-21swapper/323:55:203
2563399496,9cyclictest33-21ksoftirqd/221:45:172
2563399495,6cyclictest33-21ksoftirqd/222:40:152
2563399495,6cyclictest33-21ksoftirqd/221:00:162
2563399495,6cyclictest33-21ksoftirqd/220:14:202
2563399495,5cyclictest33-21ksoftirqd/220:30:132
2563399494,8cyclictest33-21ksoftirqd/222:50:002
2563399493,7cyclictest33-21ksoftirqd/220:35:252
2563399493,6cyclictest33-21ksoftirqd/219:15:162
25633994925,4cyclictest33-21ksoftirqd/220:20:132
25633994922,7cyclictest33-21ksoftirqd/219:50:122
25633994921,3cyclictest33-21ksoftirqd/223:41:502
2563299494,8cyclictest29459-21ssh21:25:241
2563299494,15cyclictest23281-21/usr/sbin/munin22:20:161
2563399486,7cyclictest33-21ksoftirqd/222:30:152
2563399485,5cyclictest33-21ksoftirqd/219:35:142
2563399484,8cyclictest33-21ksoftirqd/222:55:272
2563399484,7cyclictest33-21ksoftirqd/221:55:152
2563399484,5cyclictest33-21ksoftirqd/223:50:182
2563399483,7cyclictest33-21ksoftirqd/223:55:152
25633994821,8cyclictest33-21ksoftirqd/219:25:272
2563299486,8cyclictest22474-21sshd23:21:271
2563399475,5cyclictest33-21ksoftirqd/223:15:232
2563399472,5cyclictest33-21ksoftirqd/221:10:132
2563399472,5cyclictest33-21ksoftirqd/221:10:122
25633994719,8cyclictest33-21ksoftirqd/219:30:252
2563299476,7cyclictest2315-21gnome-shell19:42:591
2563299476,7cyclictest15663-21sshd00:11:411
2563399465,5cyclictest33-21ksoftirqd/223:35:172
2563399464,8cyclictest33-21ksoftirqd/223:45:162
2563399463,5cyclictest33-21ksoftirqd/221:40:232
2563299467,8cyclictest13745-21hddtemp_smartct23:05:171
2563299466,9cyclictest32115-21python23:40:241
2563299465,9cyclictest18331-21fschecks_time21:05:151
2563299465,8cyclictest20976-21iostat21:10:181
2563299465,8cyclictest20976-21iostat21:10:181
2563299465,8cyclictest18784-21iostat20:00:191
2563299463,7cyclictest16177-21apt-get00:15:131
2563299463,17cyclictest0-21swapper/123:25:251
2563299456,8cyclictest32529-21sshd19:20:411
2563299456,8cyclictest32529-21sshd19:20:411
2563299456,7cyclictest31773-21meminfo22:35:201
2563299455,8cyclictest16492-21smartctl22:05:161
2563299455,7cyclictest8540-21apt-get00:00:111
2563299446,8cyclictest4250-21irqstats22:45:171
2563299446,7cyclictest24561-21irqstats00:30:181
2563299445,8cyclictest4592-21mailstats21:40:231
2563399433,5cyclictest33-21ksoftirqd/220:55:202
2563299436,7cyclictest1848-21meminfo22:40:191
2563299436,10cyclictest10534-21grep21:55:011
2563299435,8cyclictest17194-21ls23:10:251
138491430,0ptp4l401ktimersoftd/320:34:563
25634994237,3cyclictest41-21ksoftirqd/320:05:003
25634994237,3cyclictest41-21ksoftirqd/319:15:003
2563299426,7cyclictest28503-21hddtemp_smartct23:35:161
2563299425,8cyclictest21192-21cpuspeed00:25:131
2563299425,7cyclictest6792-21iostat_ios23:55:191
2563299423,7cyclictest25729-21apt-get19:10:121
50798410,7rtkit-daemon0-21swapper/020:58:470
2563299414,9cyclictest540-21/usr/sbin/munin21:35:171
138491410,0ptp4l401ktimersoftd/322:30:113
25634994035,3cyclictest41-21ksoftirqd/320:19:593
25634994034,3cyclictest41-21ksoftirqd/320:00:003
2563299403,7cyclictest12002-21ps19:45:221
50798390,1rtkit-daemon0-21swapper/000:03:390
2563299394,9cyclictest27162-21ls20:15:271
2563299394,8cyclictest21276-21df_inode22:15:151
25634993832,4cyclictest41-21ksoftirqd/321:07:323
2563299384,7cyclictest18428-21df23:15:141
2563299384,7cyclictest13696-21diskstats22:00:141
138491380,0ptp4l401ktimersoftd/323:25:163
25634993725,11cyclictest41-21ksoftirqd/320:25:013
2563299376,13cyclictest26488-21df_inode00:35:151
2563299376,12cyclictest30780-21df_inode21:30:141
2563299372,14cyclictest27419-21ls22:25:241
25631993731,4cyclictest9-21ksoftirqd/000:31:560
138491370,1ptp4l401ktimersoftd/319:51:523
25634993631,3cyclictest41-21ksoftirqd/300:35:203
25634993630,4cyclictest41-21ksoftirqd/322:58:193
25634993630,4cyclictest41-21ksoftirqd/320:06:183
25634993629,5cyclictest41-21ksoftirqd/322:45:113
25634993629,4cyclictest41-21ksoftirqd/323:10:083
25634993629,4cyclictest41-21ksoftirqd/319:16:243
2563299364,16cyclictest1433-21iostat19:25:171
2563299364,13cyclictest28911-21iostat_ios19:15:181
2563299363,7cyclictest26742-21ps21:20:211
25631993631,3cyclictest9-21ksoftirqd/019:16:120
25631993630,4cyclictest9-21ksoftirqd/023:09:480
25631993630,4cyclictest9-21ksoftirqd/000:20:520
50798350,2rtkit-daemon0-21swapper/021:41:320
25634993531,3cyclictest41-21ksoftirqd/319:40:003
25634993530,3cyclictest41-21ksoftirqd/322:00:183
25634993530,3cyclictest41-21ksoftirqd/321:25:103
25634993529,4cyclictest41-21ksoftirqd/323:48:583
25634993529,4cyclictest41-21ksoftirqd/323:31:223
25634993529,4cyclictest41-21ksoftirqd/321:23:213
25634993529,4cyclictest41-21ksoftirqd/321:14:583
25634993529,4cyclictest41-21ksoftirqd/321:14:583
25634993529,4cyclictest41-21ksoftirqd/300:16:353
25634993529,3cyclictest41-21ksoftirqd/320:55:183
25634993528,4cyclictest41-21ksoftirqd/322:25:173
25634993528,4cyclictest41-21ksoftirqd/300:12:413
2563299354,29cyclictest0-21swapper/123:45:231
25632993529,3cyclictest25-21ksoftirqd/120:30:191
25631993529,4cyclictest9-21ksoftirqd/022:23:270
25631993529,4cyclictest9-21ksoftirqd/021:31:440
25631993529,4cyclictest9-21ksoftirqd/020:28:420
25631993529,4cyclictest9-21ksoftirqd/019:46:530
25631993529,4cyclictest9-21ksoftirqd/019:10:110
50798340,1rtkit-daemon0-21swapper/023:35:480
25634993429,3cyclictest41-21ksoftirqd/323:42:083
25634993429,3cyclictest41-21ksoftirqd/322:50:143
25634993429,3cyclictest41-21ksoftirqd/320:45:003
25634993429,3cyclictest41-21ksoftirqd/300:00:193
25634993428,4cyclictest41-21ksoftirqd/322:21:293
25634993428,4cyclictest41-21ksoftirqd/321:51:493
25634993428,4cyclictest41-21ksoftirqd/321:38:163
25634993428,4cyclictest41-21ksoftirqd/320:26:323
25634993428,4cyclictest41-21ksoftirqd/300:21:043
2563299345,17cyclictest6132-21iostat20:40:191
25631993428,4cyclictest9-21ksoftirqd/023:57:060
25631993428,4cyclictest9-21ksoftirqd/023:12:280
25631993428,4cyclictest9-21ksoftirqd/021:59:030
25631993428,4cyclictest9-21ksoftirqd/020:49:110
25631993428,4cyclictest9-21ksoftirqd/000:28:150
50798330,1rtkit-daemon0-21swapper/023:53:300
25634993329,3cyclictest41-21ksoftirqd/320:35:193
25634993328,3cyclictest41-21ksoftirqd/323:21:003
25634993327,4cyclictest41-21ksoftirqd/322:40:473
25634993326,4cyclictest41-21ksoftirqd/319:45:043
2563299336,12cyclictest6412-21iostat19:35:181
25632993327,4cyclictest25-21ksoftirqd/119:58:581
25631993328,3cyclictest9-21ksoftirqd/023:21:590
25631993328,3cyclictest9-21ksoftirqd/022:06:450
25631993327,4cyclictest9-21ksoftirqd/023:28:210
25631993327,4cyclictest9-21ksoftirqd/021:48:010
25631993327,4cyclictest9-21ksoftirqd/019:57:400
25631993327,4cyclictest9-21ksoftirqd/000:15:350
25631993327,4cyclictest9-21ksoftirqd/000:12:540
25634993227,3cyclictest41-21ksoftirqd/321:00:163
25634993226,4cyclictest41-21ksoftirqd/323:36:593
25634993226,4cyclictest41-21ksoftirqd/320:50:593
25634993226,4cyclictest41-21ksoftirqd/300:27:583
25634993226,3cyclictest41-21ksoftirqd/322:00:013
25631993228,2cyclictest9-21ksoftirqd/021:25:000
25631993227,3cyclictest9-21ksoftirqd/023:02:290
25631993227,3cyclictest9-21ksoftirqd/022:35:340
25631993227,3cyclictest9-21ksoftirqd/021:15:130
25631993227,3cyclictest9-21ksoftirqd/021:02:070
25631993227,3cyclictest9-21ksoftirqd/019:23:190
25631993227,3cyclictest9-21ksoftirqd/019:23:180
25631993227,3cyclictest9-21ksoftirqd/000:08:340
25631993226,4cyclictest9-21ksoftirqd/022:14:440
25631993226,4cyclictest9-21ksoftirqd/021:14:430
25631993226,4cyclictest9-21ksoftirqd/021:14:430
25631993226,4cyclictest9-21ksoftirqd/020:51:160
25631993226,4cyclictest9-21ksoftirqd/020:36:270
25631993226,4cyclictest9-21ksoftirqd/020:09:560
25634993127,3cyclictest41-21ksoftirqd/323:05:143
25634993126,3cyclictest41-21ksoftirqd/323:03:513
25634993126,3cyclictest41-21ksoftirqd/322:16:263
25634993126,3cyclictest41-21ksoftirqd/321:45:163
25634993126,3cyclictest41-21ksoftirqd/321:30:253
25634993126,3cyclictest41-21ksoftirqd/320:10:183
25634993126,3cyclictest41-21ksoftirqd/300:30:183
25634993125,4cyclictest41-21ksoftirqd/319:24:223
25634993125,4cyclictest41-21ksoftirqd/319:24:223
25634993125,3cyclictest41-21ksoftirqd/321:45:003
25632993125,4cyclictest25-21ksoftirqd/122:32:181
2563299312,27cyclictest0-21swapper/121:00:121
25631993126,3cyclictest9-21ksoftirqd/023:30:170
25631993126,3cyclictest9-21ksoftirqd/022:50:370
25631993126,3cyclictest9-21ksoftirqd/022:32:420
25631993126,3cyclictest9-21ksoftirqd/021:50:580
25631993126,3cyclictest9-21ksoftirqd/020:17:590
25631993126,3cyclictest9-21ksoftirqd/019:30:170
25631993125,4cyclictest9-21ksoftirqd/023:18:060
25631993125,4cyclictest9-21ksoftirqd/022:43:180
25631993125,4cyclictest9-21ksoftirqd/020:42:050
25631993125,4cyclictest9-21ksoftirqd/019:36:020
25631993125,4cyclictest9-21ksoftirqd/000:35:410
25634993024,4cyclictest41-21ksoftirqd/319:26:143
25634993024,3cyclictest41-21ksoftirqd/320:50:003
2563299305,12cyclictest4229-21irqstats19:30:171
25632993024,4cyclictest25-21ksoftirqd/119:54:091
2563299301,17cyclictest0-21swapper/120:25:101
25631993025,3cyclictest9-21ksoftirqd/020:34:280
25631993025,3cyclictest9-21ksoftirqd/020:10:440
25631993024,4cyclictest9-21ksoftirqd/022:56:440
25631993024,4cyclictest9-21ksoftirqd/022:18:340
25631993024,4cyclictest9-21ksoftirqd/020:00:120
25631993024,4cyclictest9-21ksoftirqd/019:44:090
138491300,0ptp4l401ktimersoftd/322:08:323
25634992924,3cyclictest41-21ksoftirqd/321:17:123
25632992923,4cyclictest25-21ksoftirqd/122:54:211
25631992925,3cyclictest9-21ksoftirqd/023:40:250
25631992924,3cyclictest9-21ksoftirqd/022:04:310
25631992924,3cyclictest9-21ksoftirqd/021:30:000
25631992924,3cyclictest9-21ksoftirqd/019:50:180
25634992823,3cyclictest41-21ksoftirqd/319:30:113
2563299286,8cyclictest11156-21df_inode23:00:141
2563299286,7cyclictest3297-21df20:35:141
25632992822,4cyclictest25-21ksoftirqd/100:07:131
25631992823,3cyclictest9-21ksoftirqd/020:24:280
25631992822,4cyclictest9-21ksoftirqd/023:46:500
25631992822,4cyclictest9-21ksoftirqd/022:26:480
25634992723,2cyclictest41-21ksoftirqd/323:55:003
25634992723,2cyclictest41-21ksoftirqd/300:05:193
2563299272,14cyclictest0-21swapper/120:50:261
25631992621,3cyclictest9-21ksoftirqd/022:46:490
25631992621,3cyclictest9-21ksoftirqd/021:35:250
25632992010,7cyclictest5646-21dpkg21:45:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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