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2025-12-25 - 21:37
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackbslot6.osadl.org (updated Thu Dec 25, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1068911080,3ptp4l401ktimersoftd/307:14:233
48042680,5sleep24808-21latency11:22:352
300962660,2sleep30-21swapper/307:42:363
155892654,10sleep00-21swapper/007:13:340
279832600,5sleep127986-21unixbench_multi07:37:401
15982995946,5cyclictest41-21ksoftirqd/311:37:273
106891590,1ptp4l401ktimersoftd/308:07:283
106891540,1ptp4l401ktimersoftd/312:11:053
15982995342,5cyclictest41-21ksoftirqd/307:27:223
15982995340,7cyclictest41-21ksoftirqd/311:57:273
15982995339,7cyclictest41-21ksoftirqd/310:37:283
106891530,1ptp4l401ktimersoftd/308:15:073
157212504,34sleep20-21swapper/207:15:172
15982994939,5cyclictest41-21ksoftirqd/308:27:243
15982994936,7cyclictest41-21ksoftirqd/310:22:243
158452494,34sleep10-21swapper/107:16:541
15982994836,5cyclictest41-21ksoftirqd/311:02:263
106891470,1ptp4l401ktimersoftd/312:19:453
15982994636,5cyclictest41-21ksoftirqd/310:52:253
15982994534,5cyclictest41-21ksoftirqd/309:07:223
106891450,1ptp4l401ktimersoftd/308:58:453
15982994332,5cyclictest41-21ksoftirqd/312:27:293
106891430,10ptp4l401ktimersoftd/312:43:523
106891410,1ptp4l401ktimersoftd/309:27:353
106891400,1ptp4l401ktimersoftd/311:27:263
106891380,5ptp4l401ktimersoftd/308:02:563
106891380,5ptp4l401ktimersoftd/308:02:563
106891380,1ptp4l401ktimersoftd/310:37:143
106891380,1ptp4l401ktimersoftd/309:43:253
15982993726,5cyclictest41-21ksoftirqd/311:12:273
15982993712,3cyclictest41-21ksoftirqd/311:52:453
1597899372,9cyclictest24413-21apt-get10:57:262
15978993712,4cyclictest29658-21latency07:42:282
15978993711,5cyclictest20029-21tune2fs10:47:292
106891370,2ptp4l495-21kworker/3:110:19:173
106891370,1ptp4l401ktimersoftd/310:02:443
106891370,1ptp4l401ktimersoftd/309:50:113
106891370,1ptp4l401ktimersoftd/309:17:283
15978993613,3cyclictest19180-21seq10:45:032
15973993629,4cyclictest25-21ksoftirqd/112:25:281
106891360,1ptp4l401ktimersoftd/312:15:283
106891360,0ptp4l401ktimersoftd/311:32:313
106891360,0ptp4l401ktimersoftd/310:44:073
106891360,0ptp4l401ktimersoftd/309:39:243
106891360,0ptp4l401ktimersoftd/309:14:193
1597899353,9cyclictest4451-21apt-get09:07:232
15978993512,3cyclictest9553-21sed11:32:322
15982993410,3cyclictest41-21ksoftirqd/311:07:443
1597899347,8cyclictest22277-21tail11:57:452
15978993416,4cyclictest33-21ksoftirqd/211:45:312
15978993411,4cyclictest32455-21expr11:12:332
106891340,1ptp4l401ktimersoftd/312:02:383
106891340,1ptp4l401ktimersoftd/307:19:253
1597899332,7cyclictest20267-21apt-get08:32:222
15978993320,8cyclictest321ktimersoftd/209:22:232
15978993311,4cyclictest10256-21latency_hist08:12:102
15968993328,3cyclictest20144-21cron11:57:150
106891330,1ptp4l401ktimersoftd/311:47:013
106891330,1ptp4l401ktimersoftd/310:12:143
106891330,1ptp4l401ktimersoftd/308:54:503
106891330,1ptp4l401ktimersoftd/308:37:583
15982993220,9cyclictest41-21ksoftirqd/307:22:253
1597899322,8cyclictest18682-21apt-get09:37:252
15978993216,3cyclictest33-21ksoftirqd/208:59:072
15978993214,4cyclictest33-21ksoftirqd/209:57:232
15978993214,4cyclictest33-21ksoftirqd/209:57:232
106891320,1ptp4l401ktimersoftd/311:01:043
106891320,1ptp4l401ktimersoftd/307:57:053
15982993125,4cyclictest41-21ksoftirqd/310:07:303
15982993125,3cyclictest41-21ksoftirqd/307:37:083
1597899312,9cyclictest9798-21apt-get12:42:282
15978993111,4cyclictest33-21ksoftirqd/208:42:492
106891310,1ptp4l401ktimersoftd/311:23:053
106891310,1ptp4l401ktimersoftd/309:35:173
106891310,1ptp4l401ktimersoftd/307:41:133
15982993025,3cyclictest41-21ksoftirqd/312:37:163
15982993025,3cyclictest41-21ksoftirqd/311:52:153
15982993024,3cyclictest41-21ksoftirqd/310:27:443
15982993019,3cyclictest41-21ksoftirqd/309:52:283
15978993023,4cyclictest33-21ksoftirqd/209:02:232
106891300,1ptp4l401ktimersoftd/309:06:033
106891300,0ptp4l401ktimersoftd/310:01:163
106891300,0ptp4l401ktimersoftd/310:01:163
15982992924,3cyclictest41-21ksoftirqd/311:17:293
15978992923,4cyclictest33-21ksoftirqd/209:12:232
15978992923,3cyclictest33-21ksoftirqd/212:24:152
106891290,0ptp4l401ktimersoftd/310:49:243
15982992823,3cyclictest41-21ksoftirqd/308:52:113
106891280,1ptp4l401ktimersoftd/309:23:053
251312270,7sleep025135-21phc2sys07:32:290
15982992722,3cyclictest41-21ksoftirqd/308:32:233
15982992722,3cyclictest41-21ksoftirqd/308:17:383
15982992722,3cyclictest41-21ksoftirqd/308:02:093
15982992722,3cyclictest41-21ksoftirqd/307:47:293
15982992721,3cyclictest41-21ksoftirqd/312:27:163
15982992721,3cyclictest41-21ksoftirqd/308:47:113
15978992721,3cyclictest33-21ksoftirqd/208:50:592
15978992721,3cyclictest33-21ksoftirqd/208:22:112
15978992720,4cyclictest33-21ksoftirqd/212:09:402
15978992720,4cyclictest33-21ksoftirqd/207:48:052
15973992722,3cyclictest25-21ksoftirqd/111:57:151
15973992720,4cyclictest25-21ksoftirqd/110:45:201
15968992722,3cyclictest9-21ksoftirqd/011:07:390
15968992721,3cyclictest9-21ksoftirqd/010:41:130
15968992720,4cyclictest9-21ksoftirqd/011:21:520
15968992720,4cyclictest9-21ksoftirqd/008:35:080
15968992719,5cyclictest19717-21grep07:22:250
15982992614,10cyclictest41-21ksoftirqd/312:37:453
15978992620,3cyclictest33-21ksoftirqd/210:10:362
15978992620,3cyclictest33-21ksoftirqd/209:44:222
15978992619,4cyclictest33-21ksoftirqd/212:04:502
15978992619,4cyclictest33-21ksoftirqd/210:42:042
15978992619,4cyclictest33-21ksoftirqd/209:56:192
15973992620,3cyclictest25-21ksoftirqd/112:30:321
15973992620,3cyclictest25-21ksoftirqd/112:04:211
15973992620,3cyclictest25-21ksoftirqd/111:17:281
15973992620,3cyclictest25-21ksoftirqd/108:26:561
15973992620,3cyclictest25-21ksoftirqd/107:34:321
15973992619,4cyclictest25-21ksoftirqd/111:46:101
15973992619,4cyclictest25-21ksoftirqd/111:35:221
15973992619,4cyclictest25-21ksoftirqd/107:26:361
15968992620,4cyclictest9-21ksoftirqd/009:26:030
15968992620,3cyclictest9-21ksoftirqd/008:17:300
15968992619,4cyclictest9-21ksoftirqd/010:20:540
15968992619,4cyclictest9-21ksoftirqd/009:09:080
106891260,1ptp4l401ktimersoftd/308:22:283
60852250,2sleep00-21swapper/011:27:140
15978992519,4cyclictest33-21ksoftirqd/212:39:222
15978992519,4cyclictest33-21ksoftirqd/209:33:352
15978992519,3cyclictest33-21ksoftirqd/207:22:192
15978992519,3cyclictest33-21ksoftirqd/207:17:482
15978992518,4cyclictest33-21ksoftirqd/211:48:442
15978992518,4cyclictest33-21ksoftirqd/210:53:282
15973992519,3cyclictest25-21ksoftirqd/112:14:321
15973992519,3cyclictest25-21ksoftirqd/110:59:011
15973992519,3cyclictest25-21ksoftirqd/109:56:151
15973992519,3cyclictest25-21ksoftirqd/109:15:071
15973992519,3cyclictest25-21ksoftirqd/109:09:171
15973992518,4cyclictest25-21ksoftirqd/111:26:511
15973992518,4cyclictest25-21ksoftirqd/108:27:551
15968992520,3cyclictest9-21ksoftirqd/010:02:230
15968992519,4cyclictest9-21ksoftirqd/010:50:210
15968992518,4cyclictest9-21ksoftirqd/011:48:220
15968992518,4cyclictest9-21ksoftirqd/011:31:480
271362241,19sleep027138-21snmp_o5powerctl09:52:370
15978992418,4cyclictest33-21ksoftirqd/208:30:322
15978992417,4cyclictest33-21ksoftirqd/212:36:532
15978992417,4cyclictest33-21ksoftirqd/212:21:202
15978992417,4cyclictest33-21ksoftirqd/211:09:382
15978992417,4cyclictest33-21ksoftirqd/208:16:522
15978992417,4cyclictest33-21ksoftirqd/207:58:132
15978992417,4cyclictest33-21ksoftirqd/207:56:362
15978992416,5cyclictest33-21ksoftirqd/212:17:152
15978992416,5cyclictest33-21ksoftirqd/211:41:132
15973992418,3cyclictest25-21ksoftirqd/111:07:351
15973992418,3cyclictest25-21ksoftirqd/109:34:541
15973992418,3cyclictest25-21ksoftirqd/108:42:071
15973992418,3cyclictest25-21ksoftirqd/108:34:401
15973992417,4cyclictest25-21ksoftirqd/111:57:261
15973992417,4cyclictest25-21ksoftirqd/110:15:371
15973992417,4cyclictest25-21ksoftirqd/107:47:521
15973992417,4cyclictest25-21ksoftirqd/107:19:141
15973992417,4cyclictest19818-21tr10:47:261
15968992419,3cyclictest9-21ksoftirqd/009:13:020
15968992418,4cyclictest9-21ksoftirqd/011:59:460
15968992418,4cyclictest9-21ksoftirqd/007:59:270
15968992418,4cyclictest9-21ksoftirqd/007:41:450
15968992418,3cyclictest9-21ksoftirqd/012:33:460
15968992418,3cyclictest9-21ksoftirqd/012:14:390
15968992418,3cyclictest9-21ksoftirqd/010:55:060
15968992418,3cyclictest9-21ksoftirqd/010:36:000
15968992417,4cyclictest9-21ksoftirqd/012:44:380
15968992417,4cyclictest9-21ksoftirqd/012:23:550
15968992417,4cyclictest9-21ksoftirqd/011:16:220
15968992417,4cyclictest9-21ksoftirqd/011:00:090
15968992417,4cyclictest9-21ksoftirqd/009:42:530
15968992417,4cyclictest9-21ksoftirqd/009:35:180
15968992417,4cyclictest9-21ksoftirqd/009:30:080
15968992417,4cyclictest9-21ksoftirqd/007:55:540
15968992417,4cyclictest906-21tail08:57:330
15978992317,3cyclictest33-21ksoftirqd/207:31:252
15978992316,4cyclictest33-21ksoftirqd/212:29:352
15978992316,4cyclictest33-21ksoftirqd/208:05:562
15978992316,4cyclictest33-21ksoftirqd/208:05:562
15973992318,3cyclictest25-21ksoftirqd/111:39:421
15973992317,3cyclictest25-21ksoftirqd/109:57:231
15973992317,3cyclictest25-21ksoftirqd/109:57:231
15973992317,3cyclictest25-21ksoftirqd/108:43:571
15973992317,3cyclictest25-21ksoftirqd/108:21:231
15973992316,4cyclictest25-21ksoftirqd/112:43:311
15968992318,3cyclictest9-21ksoftirqd/009:47:500
15968992317,4cyclictest9-21ksoftirqd/010:24:030
15968992317,3cyclictest9-21ksoftirqd/011:44:000
15968992317,3cyclictest9-21ksoftirqd/008:30:390
15968992317,3cyclictest9-21ksoftirqd/008:03:010
15968992317,3cyclictest9-21ksoftirqd/008:03:010
15968992317,3cyclictest9-21ksoftirqd/007:50:000
15968992317,3cyclictest9-21ksoftirqd/007:44:020
15968992317,3cyclictest9-21ksoftirqd/007:19:230
15978992216,3cyclictest33-21ksoftirqd/209:48:372
15978992216,3cyclictest33-21ksoftirqd/208:37:492
15978992215,4cyclictest33-21ksoftirqd/211:53:502
15978992215,4cyclictest33-21ksoftirqd/210:14:342
1597899220,2cyclictest121rcu_preempt08:19:342
15973992217,3cyclictest25-21ksoftirqd/109:19:041
15973992216,4cyclictest25-21ksoftirqd/111:12:421
15973992216,3cyclictest25-21ksoftirqd/110:02:481
15973992215,4cyclictest16199-21head11:47:281
15973992215,4cyclictest11074-21grep08:12:241
15968992217,3cyclictest25425-21apt-get12:07:290
15968992216,4cyclictest9-21ksoftirqd/012:05:400
15968992216,3cyclictest9-21ksoftirqd/012:31:580
15968992216,3cyclictest9-21ksoftirqd/010:43:060
15968992216,3cyclictest9-21ksoftirqd/009:04:260
15968992216,3cyclictest9-21ksoftirqd/008:40:540
15968992215,4cyclictest9-21ksoftirqd/007:29:440
15978992115,3cyclictest33-21ksoftirqd/211:05:142
15978992115,3cyclictest24375-21grep07:32:242
15973992116,3cyclictest25-21ksoftirqd/110:11:521
15973992116,3cyclictest25-21ksoftirqd/109:03:351
15973992115,4cyclictest25-21ksoftirqd/112:19:221
15973992114,4cyclictest9163-21swap10:22:391
15973992114,4cyclictest25-21ksoftirqd/112:09:511
15973992114,4cyclictest25-21ksoftirqd/110:29:381
15973992114,4cyclictest25-21ksoftirqd/109:01:071
1597399211,3cyclictest6787-21snmp_o5powerctl10:17:391
15973992113,5cyclictest14408-21sed09:27:281
1597399211,2cyclictest0-21swapper/111:29:071
1597399211,17cyclictest2422-21snmp_o5powerctl07:52:361
15968992116,3cyclictest9-21ksoftirqd/010:29:130
15968992116,3cyclictest9-21ksoftirqd/008:47:570
15968992116,3cyclictest9-21ksoftirqd/008:45:160
15968992115,3cyclictest9-21ksoftirqd/012:42:000
15968992115,3cyclictest9-21ksoftirqd/010:02:000
15968992115,3cyclictest9-21ksoftirqd/010:02:000
15968992114,4cyclictest9-21ksoftirqd/010:08:540
15968992114,4cyclictest9-21ksoftirqd/008:25:210
15968992114,4cyclictest9061-21cut11:32:290
15978992014,3cyclictest7300-21strings11:27:352
1597899201,3cyclictest10526-21snmp_o5powerctl09:17:362
15978992013,4cyclictest33-21ksoftirqd/210:02:222
15978992013,4cyclictest30732-21memory08:52:312
1597899201,16cyclictest5803-21perl10:17:292
15973992015,3cyclictest25-21ksoftirqd/110:52:291
15973992015,3cyclictest25-21ksoftirqd/109:44:581
15973992014,4cyclictest25-21ksoftirqd/109:22:541
15973992014,3cyclictest25-21ksoftirqd/108:08:051
1597399200,18cyclictest0-21swapper/111:02:181
1597399200,17cyclictest24491-21strings09:47:331
15968992015,3cyclictest31427-21tail12:17:350
15968992011,4cyclictest8840-21irqrtprio08:07:300
15978991913,3cyclictest7727-21/usr/sbin/munin10:22:282
15978991913,3cyclictest13916-21switchtime10:32:392
15978991912,4cyclictest33-21ksoftirqd/209:31:182
1597899191,15cyclictest11545-21snmp_o5powerctl10:27:422
15973991914,3cyclictest25-21ksoftirqd/112:37:211
15973991914,3cyclictest0-21swapper/108:52:391
15973991913,4cyclictest28557-21seq08:47:331
15973991913,4cyclictest18823-21tr09:37:271
1597399191,2cyclictest0-21swapper/110:38:421
1597399190,2cyclictest0-21swapper/112:33:531
1597399190,2cyclictest0-21swapper/110:35:461
1597399190,2cyclictest0-21swapper/107:44:301
1597399190,2cyclictest0-21swapper/107:28:501
1597399190,17cyclictest0-21swapper/108:04:021
1597399190,17cyclictest0-21swapper/108:04:021
15968991913,4cyclictest2788-21/usr/sbin/munin10:12:440
15968991913,3cyclictest28129-21seq11:02:410
15968991912,4cyclictest9-21ksoftirqd/008:55:070
15978991813,3cyclictest33-21ksoftirqd/207:38:382
15978991813,3cyclictest1403-21/usr/sbin/munin11:17:302
15973991812,3cyclictest3663-21expr07:57:231
1596899189,5cyclictest18784-21cpuspeed_turbos09:37:260
1596899189,5cyclictest10173-21missed_timers09:17:320
15968991813,3cyclictest10914-21acpi11:37:270
15968991711,3cyclictest10897-21cpuspeed_turbos08:12:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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