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2026-04-25 - 14:56
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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 Sat Apr 25, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
183452202169,22sleep30-21swapper/319:09:273
183432201169,21sleep10-21swapper/119:09:251
183142197163,22sleep00-21swapper/019:09:160
183182187155,21sleep20-21swapper/219:09:182
1393911090,1ptp4l11330-21grep19:25:003
21752660,16sleep02166-21expr19:27:570
21752660,16sleep02166-21expr19:27:570
148142650,6sleep21868199cyclictest23:40:202
301782640,3sleep2311rcuc/219:40:262
156752640,4sleep015680-21rm19:30:270
18681996227,6cyclictest33-21ksoftirqd/222:45:152
68292610,7sleep21868199cyclictest19:30:132
260532610,5sleep226054-21multi.sh19:28:232
260532610,5sleep226054-21multi.sh19:28:232
18681996128,3cyclictest33-21ksoftirqd/219:15:002
137702590,2sleep10-21swapper/120:15:191
289762580,6sleep21868199cyclictest19:21:572
139391580,1ptp4l401ktimersoftd/319:15:013
18681995524,4cyclictest33-21ksoftirqd/220:35:152
18681995521,4cyclictest33-21ksoftirqd/222:35:202
313532540,5sleep131357-21sort19:27:261
313532540,5sleep131357-21sort19:27:261
18681995423,5cyclictest33-21ksoftirqd/221:05:202
18681995222,4cyclictest33-21ksoftirqd/223:05:232
42442500,3sleep34245-21latency_hist21:05:003
18681995019,5cyclictest33-21ksoftirqd/221:00:222
18681995018,3cyclictest33-21ksoftirqd/221:55:132
18681994921,3cyclictest33-21ksoftirqd/200:05:232
139391480,1ptp4l401ktimersoftd/300:07:553
1868199478,6cyclictest33-21ksoftirqd/220:59:592
18681994713,6cyclictest33-21ksoftirqd/200:20:132
18681994619,4cyclictest33-21ksoftirqd/221:43:152
18681994616,4cyclictest33-21ksoftirqd/220:15:222
18681994615,3cyclictest33-21ksoftirqd/222:15:012
18681994614,6cyclictest33-21ksoftirqd/220:50:152
18681994613,9cyclictest33-21ksoftirqd/223:25:142
1868199460,14cyclictest27035-21apt-get23:00:132
1868199459,6cyclictest33-21ksoftirqd/222:20:002
18681994512,4cyclictest33-21ksoftirqd/220:25:222
1868199448,3cyclictest33-21ksoftirqd/200:00:222
18681994415,4cyclictest33-21ksoftirqd/220:05:012
18681994414,4cyclictest33-21ksoftirqd/221:45:142
18681994412,4cyclictest33-21ksoftirqd/222:25:152
18681994411,5cyclictest33-21ksoftirqd/220:15:002
139391440,0ptp4l401ktimersoftd/320:05:283
1868199439,6cyclictest33-21ksoftirqd/222:05:212
1868199438,7cyclictest33-21ksoftirqd/200:18:212
1868199431,3cyclictest33-21ksoftirqd/200:35:002
139391430,0ptp4l401ktimersoftd/323:32:113
139391430,0ptp4l401ktimersoftd/322:32:133
139391430,0ptp4l401ktimersoftd/322:01:043
139391430,0ptp4l401ktimersoftd/300:20:283
1868199426,5cyclictest33-21ksoftirqd/221:25:142
1868199425,2cyclictest121rcu_preempt23:50:162
18681994233,2cyclictest121rcu_preempt19:14:452
1868199422,2cyclictest121rcu_preempt23:55:192
18681994212,4cyclictest33-21ksoftirqd/222:30:242
1868199420,3cyclictest121rcu_preempt23:20:152
18681994136,3cyclictest33-21ksoftirqd/221:40:012
18681994130,8cyclictest33-21ksoftirqd/219:55:242
18681994111,4cyclictest33-21ksoftirqd/223:15:142
139391410,0ptp4l401ktimersoftd/322:55:273
1868199409,9cyclictest33-21ksoftirqd/222:20:132
1868199408,6cyclictest33-21ksoftirqd/222:40:012
18681994036,2cyclictest33-21ksoftirqd/219:50:012
139391400,0ptp4l401ktimersoftd/320:45:233
18681993934,3cyclictest33-21ksoftirqd/200:39:592
18681993934,2cyclictest33-21ksoftirqd/222:54:592
1868199393,3cyclictest121rcu_preempt21:25:002
1868199393,3cyclictest121rcu_preempt21:25:002
1868199392,6cyclictest33-21ksoftirqd/222:00:202
1868199392,3cyclictest121rcu_preempt21:15:002
18681993923,14cyclictest33-21ksoftirqd/220:04:272
1868199383,5cyclictest33-21ksoftirqd/220:20:252
18681993833,3cyclictest33-21ksoftirqd/221:15:132
18681993833,3cyclictest33-21ksoftirqd/221:15:132
18681993833,3cyclictest33-21ksoftirqd/219:39:592
1868199383,2cyclictest121rcu_preempt23:35:192
18681993832,3cyclictest33-21ksoftirqd/200:30:002
1868199382,3cyclictest121rcu_preempt20:30:262
1868199380,5cyclictest33-21ksoftirqd/223:30:252
18680993833,3cyclictest25-21ksoftirqd/119:30:281
18680993832,4cyclictest25-21ksoftirqd/120:38:421
18680993832,4cyclictest25-21ksoftirqd/100:21:261
18682993732,3cyclictest41-21ksoftirqd/319:27:573
18682993732,3cyclictest41-21ksoftirqd/319:27:573
18681993733,2cyclictest33-21ksoftirqd/220:40:232
18680993733,2cyclictest25-21ksoftirqd/121:55:011
18680993733,2cyclictest231rcuc/119:22:101
18680993732,3cyclictest25-21ksoftirqd/121:59:591
18680993731,4cyclictest25-21ksoftirqd/119:38:331
18682993630,4cyclictest41-21ksoftirqd/323:16:373
18682993630,4cyclictest41-21ksoftirqd/322:52:193
18682993630,4cyclictest41-21ksoftirqd/321:59:073
18681993632,2cyclictest33-21ksoftirqd/223:45:202
18681993632,2cyclictest33-21ksoftirqd/222:55:192
18681993631,3cyclictest33-21ksoftirqd/223:10:162
18681993631,3cyclictest33-21ksoftirqd/220:45:212
18681993631,3cyclictest33-21ksoftirqd/219:51:022
18681993631,2cyclictest33-21ksoftirqd/200:10:222
1868199362,3cyclictest121rcu_preempt21:50:142
1868199362,3cyclictest121rcu_preempt21:30:192
18680993630,4cyclictest25-21ksoftirqd/122:53:171
18680993630,4cyclictest25-21ksoftirqd/119:56:181
18679993631,3cyclictest9-21ksoftirqd/019:15:000
1394913630,2phc2sys62650irq/143-enp4s0-20:30:223
18682993530,3cyclictest41-21ksoftirqd/322:05:113
18682993530,3cyclictest41-21ksoftirqd/321:52:143
18682993529,4cyclictest41-21ksoftirqd/300:30:393
18680993530,3cyclictest25-21ksoftirqd/120:25:131
18680993530,3cyclictest25-21ksoftirqd/120:05:191
18680993529,4cyclictest25-21ksoftirqd/122:39:291
18680993529,4cyclictest25-21ksoftirqd/122:08:031
18680993529,4cyclictest25-21ksoftirqd/122:01:011
18680993529,4cyclictest25-21ksoftirqd/120:01:521
18680993529,4cyclictest25-21ksoftirqd/119:16:141
18680993529,3cyclictest25-21ksoftirqd/120:40:181
18679993530,3cyclictest9-21ksoftirqd/021:15:000
18679993530,3cyclictest9-21ksoftirqd/019:21:400
139391350,0ptp4l401ktimersoftd/320:20:183
18682993429,3cyclictest41-21ksoftirqd/323:10:083
18682993429,3cyclictest41-21ksoftirqd/321:23:133
18682993429,3cyclictest41-21ksoftirqd/321:23:133
18682993428,4cyclictest6585-21grep22:15:203
18682993428,4cyclictest41-21ksoftirqd/323:38:153
18682993428,4cyclictest41-21ksoftirqd/323:22:393
18682993428,4cyclictest41-21ksoftirqd/322:27:553
18682993428,4cyclictest41-21ksoftirqd/321:16:433
18682993428,4cyclictest41-21ksoftirqd/321:16:433
18682993428,4cyclictest41-21ksoftirqd/320:38:163
18682993428,3cyclictest41-21ksoftirqd/300:25:133
18680993430,3cyclictest25-21ksoftirqd/123:49:591
18680993430,3cyclictest25-21ksoftirqd/119:15:001
18680993429,3cyclictest25-21ksoftirqd/121:06:101
18680993429,3cyclictest25-21ksoftirqd/100:36:031
18680993428,4cyclictest25-21ksoftirqd/121:28:441
18680993428,4cyclictest25-21ksoftirqd/120:59:441
18680993428,4cyclictest25-21ksoftirqd/120:53:191
18679993430,2cyclictest9-21ksoftirqd/023:40:010
18679993430,2cyclictest9-21ksoftirqd/021:20:000
18679993430,2cyclictest9-21ksoftirqd/021:20:000
18679993429,3cyclictest9-21ksoftirqd/000:15:200
18679993428,4cyclictest9-21ksoftirqd/021:32:050
18679993428,4cyclictest9-21ksoftirqd/020:25:460
18679993428,4cyclictest9-21ksoftirqd/020:21:280
18679993428,3cyclictest9-21ksoftirqd/023:50:180
18679993427,5cyclictest9-21ksoftirqd/022:41:210
18679993427,5cyclictest9-21ksoftirqd/019:44:540
18682993328,3cyclictest41-21ksoftirqd/322:10:403
18682993328,3cyclictest41-21ksoftirqd/321:27:253
18682993328,3cyclictest41-21ksoftirqd/320:17:003
18682993328,3cyclictest41-21ksoftirqd/319:50:113
18682993327,4cyclictest41-21ksoftirqd/323:58:263
18682993327,4cyclictest41-21ksoftirqd/320:42:493
18680993329,3cyclictest25-21ksoftirqd/123:05:171
18680993328,3cyclictest25-21ksoftirqd/123:36:161
18680993328,3cyclictest25-21ksoftirqd/120:48:191
18680993328,3cyclictest25-21ksoftirqd/119:51:411
18680993327,4cyclictest25-21ksoftirqd/123:33:201
18680993327,4cyclictest25-21ksoftirqd/123:25:011
18680993326,4cyclictest25-21ksoftirqd/121:48:551
18679993328,3cyclictest9-21ksoftirqd/022:20:120
18679993328,3cyclictest9-21ksoftirqd/021:40:180
18679993327,4cyclictest9-21ksoftirqd/023:22:410
18679993327,4cyclictest9-21ksoftirqd/023:03:150
18679993327,4cyclictest9-21ksoftirqd/022:34:510
18679993327,4cyclictest9-21ksoftirqd/022:10:180
18679993327,4cyclictest9-21ksoftirqd/021:46:400
18682993226,4cyclictest41-21ksoftirqd/323:51:073
18682993226,4cyclictest41-21ksoftirqd/323:27:203
18682993226,4cyclictest41-21ksoftirqd/323:03:493
18682993226,4cyclictest41-21ksoftirqd/319:39:033
18682993226,4cyclictest24303-21irqrtprio00:00:183
18682993226,3cyclictest41-21ksoftirqd/321:10:003
18680993227,3cyclictest25-21ksoftirqd/122:10:101
18680993226,4cyclictest25-21ksoftirqd/123:12:541
18680993226,4cyclictest25-21ksoftirqd/123:02:231
18680993226,4cyclictest25-21ksoftirqd/122:32:141
18680993226,4cyclictest25-21ksoftirqd/120:32:251
18680993226,4cyclictest25-21ksoftirqd/119:44:191
18679993227,3cyclictest9-21ksoftirqd/021:55:110
18679993227,3cyclictest9-21ksoftirqd/019:36:110
18679993226,4cyclictest9-21ksoftirqd/022:48:500
18679993226,4cyclictest9-21ksoftirqd/022:36:310
18679993226,4cyclictest9-21ksoftirqd/020:48:360
18679993226,4cyclictest9-21ksoftirqd/000:28:310
18679993225,5cyclictest9-21ksoftirqd/019:56:490
18682993126,3cyclictest41-21ksoftirqd/320:00:113
18682993125,4cyclictest41-21ksoftirqd/320:53:093
18682993125,4cyclictest41-21ksoftirqd/319:45:373
18682993125,3cyclictest41-21ksoftirqd/321:35:243
18680993126,3cyclictest25-21ksoftirqd/123:23:011
18680993126,3cyclictest25-21ksoftirqd/122:24:161
18680993126,3cyclictest25-21ksoftirqd/121:16:401
18680993126,3cyclictest25-21ksoftirqd/121:16:391
18680993125,4cyclictest25-21ksoftirqd/100:00:081
18680993125,3cyclictest25-21ksoftirqd/122:45:211
18679993126,3cyclictest9-21ksoftirqd/023:11:090
18679993126,3cyclictest9-21ksoftirqd/020:37:290
18679993126,3cyclictest9-21ksoftirqd/020:05:480
18679993126,3cyclictest9-21ksoftirqd/019:52:560
18679993125,4cyclictest9-21ksoftirqd/022:57:410
139391310,0ptp4l401ktimersoftd/323:05:203
139391310,0ptp4l401ktimersoftd/300:13:453
18682993025,3cyclictest41-21ksoftirqd/321:11:353
18682993024,4cyclictest41-21ksoftirqd/320:11:083
18682993024,3cyclictest41-21ksoftirqd/322:35:133
18680993025,3cyclictest25-21ksoftirqd/121:45:011
18680993025,3cyclictest25-21ksoftirqd/121:01:341
18680993025,3cyclictest25-21ksoftirqd/100:10:111
18680993024,4cyclictest25-21ksoftirqd/123:42:101
18680993024,4cyclictest25-21ksoftirqd/122:27:541
18680993024,4cyclictest25-21ksoftirqd/122:16:271
18679993026,3cyclictest9-21ksoftirqd/020:11:230
18679993026,2cyclictest9-21ksoftirqd/019:50:010
18679993025,3cyclictest9-21ksoftirqd/023:15:130
18679993025,3cyclictest9-21ksoftirqd/000:31:160
18679993024,4cyclictest9-21ksoftirqd/023:41:140
18679993024,4cyclictest9-21ksoftirqd/022:29:210
18679993024,4cyclictest9-21ksoftirqd/022:06:470
18679993024,4cyclictest9-21ksoftirqd/020:53:460
18679993024,4cyclictest9-21ksoftirqd/020:15:310
18679993024,4cyclictest9-21ksoftirqd/020:01:310
18679993024,4cyclictest9-21ksoftirqd/000:38:220
18679993024,4cyclictest9-21ksoftirqd/000:11:060
139391300,6ptp4l401ktimersoftd/319:11:263
18682992925,2cyclictest139391ptp4l19:31:103
18682992924,3cyclictest41-21ksoftirqd/323:41:463
18682992924,3cyclictest41-21ksoftirqd/322:23:123
18682992924,3cyclictest41-21ksoftirqd/321:41:233
18682992924,3cyclictest41-21ksoftirqd/300:35:423
18680992925,2cyclictest25-21ksoftirqd/121:25:001
18680992925,2cyclictest25-21ksoftirqd/121:25:001
18680992924,3cyclictest25-21ksoftirqd/122:40:111
18680992924,3cyclictest25-21ksoftirqd/120:10:181
18680992923,4cyclictest25-21ksoftirqd/123:51:051
18680992923,4cyclictest25-21ksoftirqd/121:36:591
18680992923,3cyclictest25-21ksoftirqd/122:55:121
18679992924,3cyclictest9-21ksoftirqd/022:00:430
18679992924,3cyclictest9-21ksoftirqd/021:35:190
18679992924,3cyclictest9-21ksoftirqd/021:27:240
18679992924,3cyclictest9-21ksoftirqd/020:56:460
18679992923,4cyclictest9-21ksoftirqd/023:45:110
18679992923,4cyclictest9-21ksoftirqd/021:08:020
139391290,0ptp4l401ktimersoftd/323:49:403
139391290,0ptp4l401ktimersoftd/321:49:203
139391290,0ptp4l401ktimersoftd/321:33:083
18682992824,2cyclictest41-21ksoftirqd/320:58:593
18680992823,3cyclictest25-21ksoftirqd/100:30:211
18680992823,3cyclictest25-21ksoftirqd/100:30:011
18679992823,3cyclictest9-21ksoftirqd/022:19:540
18679992823,3cyclictest9-21ksoftirqd/021:20:500
18679992823,3cyclictest9-21ksoftirqd/021:20:490
18679992823,3cyclictest9-21ksoftirqd/000:05:280
18679992822,4cyclictest9-21ksoftirqd/023:32:030
18679992822,3cyclictest9-21ksoftirqd/021:00:130
18680992723,2cyclictest17570-21cron20:25:001
18680992722,3cyclictest25-21ksoftirqd/123:55:211
18680992721,4cyclictest25-21ksoftirqd/100:16:241
18680992721,4cyclictest25-21ksoftirqd/100:05:341
18679992722,3cyclictest9-21ksoftirqd/020:32:440
18679992721,4cyclictest9-21ksoftirqd/023:27:540
18682992621,3cyclictest41-21ksoftirqd/319:42:483
18680992620,4cyclictest25-21ksoftirqd/121:12:351
18679992622,2cyclictest9-21ksoftirqd/000:00:170
18679992621,3cyclictest9-21ksoftirqd/022:54:030
18679992621,3cyclictest9-21ksoftirqd/020:43:150
139391260,0ptp4l401ktimersoftd/319:55:253
18682992520,3cyclictest41-21ksoftirqd/320:26:473
18682992520,3cyclictest41-21ksoftirqd/300:17:103
18680992521,2cyclictest25-21ksoftirqd/119:45:161
18679992520,3cyclictest9-21ksoftirqd/023:55:120
18679992520,3cyclictest9-21ksoftirqd/021:50:250
18679992519,4cyclictest9-21ksoftirqd/023:09:050
139391250,0ptp4l401ktimersoftd/322:46:273
18682992419,3cyclictest41-21ksoftirqd/322:40:123
18680992420,3cyclictest25-21ksoftirqd/121:31:461
18679992419,3cyclictest9-21ksoftirqd/000:21:580
18679992318,3cyclictest9-21ksoftirqd/019:17:540
18680992219,2cyclictest25-21ksoftirqd/123:15:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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