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2026-05-27 - 06:38
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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 Wed May 27, 2026 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1849622190,2sleep20-21swapper/220:37:042
1451421700,5sleep21931799cyclictest22:42:042
1467221570,2sleep21931799cyclictest21:36:562
1068911010,4ptp4l401ktimersoftd/320:38:263
62812740,2sleep00-21swapper/000:46:440
62812740,2sleep00-21swapper/000:46:440
254482690,4sleep225451-21unixbench_multi21:57:072
106891690,10ptp4l401ktimersoftd/323:57:003
19317996856,4cyclictest33-21ksoftirqd/223:11:502
106891670,1ptp4l401ktimersoftd/322:45:463
19317996653,5cyclictest33-21ksoftirqd/221:51:512
106891660,1ptp4l401ktimersoftd/322:25:103
19317996551,6cyclictest33-21ksoftirqd/220:51:502
19308996450,7cyclictest9-21ksoftirqd/001:56:540
106891640,1ptp4l401ktimersoftd/321:36:383
206932630,4sleep21931799cyclictest01:32:552
19308996351,6cyclictest9-21ksoftirqd/020:46:480
106891620,1ptp4l401ktimersoftd/300:52:273
106891620,1ptp4l401ktimersoftd/300:52:273
76202610,2sleep10-21swapper/101:52:131
214172590,4sleep021408-21ssh23:22:050
19317995948,5cyclictest33-21ksoftirqd/200:01:522
19308995848,5cyclictest9-21ksoftirqd/022:26:080
19308995847,6cyclictest9-21ksoftirqd/000:16:540
19308995748,4cyclictest9-21ksoftirqd/021:26:480
205172560,5sleep31932399cyclictest00:27:043
106891560,1ptp4l401ktimersoftd/323:38:083
106891550,1ptp4l401ktimersoftd/300:15:593
19317995410,5cyclictest33-21ksoftirqd/200:46:582
19317995410,5cyclictest33-21ksoftirqd/200:46:582
19308995446,3cyclictest9-21ksoftirqd/023:16:510
19317995344,4cyclictest33-21ksoftirqd/223:51:542
1930899535,5cyclictest9-21ksoftirqd/001:16:540
19308995344,4cyclictest9-21ksoftirqd/022:26:520
19308995342,5cyclictest9-21ksoftirqd/022:01:520
19308995342,5cyclictest9-21ksoftirqd/001:26:550
56512520,2sleep30-21swapper/301:17:433
19308995240,6cyclictest9-21ksoftirqd/021:21:510
254692510,3sleep30-21swapper/323:26:573
19317995036,6cyclictest33-21ksoftirqd/220:56:482
19308995042,4cyclictest9-21ksoftirqd/001:41:560
19308995015,3cyclictest9-21ksoftirqd/001:11:540
106891500,1ptp4l401ktimersoftd/302:05:353
19317994841,3cyclictest33-21ksoftirqd/201:11:542
19317994719,5cyclictest33-21ksoftirqd/200:32:112
106891470,2ptp4l5310-21kworker/3:222:59:313
19308994637,4cyclictest9-21ksoftirqd/001:21:550
19308994628,3cyclictest9-21ksoftirqd/023:56:580
19308994620,5cyclictest9-21ksoftirqd/020:57:060
19308994617,15cyclictest9-21ksoftirqd/022:41:540
19308994612,4cyclictest9-21ksoftirqd/022:46:560
106891460,0ptp4l401ktimersoftd/323:53:513
1931799449,4cyclictest33-21ksoftirqd/202:01:442
19308994421,4cyclictest9-21ksoftirqd/000:06:580
19308994420,4cyclictest9-21ksoftirqd/022:16:560
19317994332,4cyclictest33-21ksoftirqd/200:26:542
19317994324,10cyclictest33-21ksoftirqd/222:57:042
19317994316,16cyclictest33-21ksoftirqd/201:42:122
19308994331,3cyclictest9-21ksoftirqd/000:25:040
19317994229,3cyclictest33-21ksoftirqd/222:11:592
19308994221,11cyclictest46950irq/100-ens3-Tx01:51:550
19308994215,4cyclictest9-21ksoftirqd/001:46:570
19317994134,3cyclictest33-21ksoftirqd/222:51:522
19317994131,5cyclictest33-21ksoftirqd/222:06:512
19317994124,5cyclictest33-21ksoftirqd/221:07:052
19317994124,5cyclictest33-21ksoftirqd/221:07:052
19317994122,9cyclictest33-21ksoftirqd/201:26:592
19308994118,7cyclictest9-21ksoftirqd/023:49:420
19317994028,3cyclictest33-21ksoftirqd/223:22:042
19317994022,6cyclictest33-21ksoftirqd/222:46:582
19317994020,5cyclictest33-21ksoftirqd/200:26:422
19317994016,5cyclictest33-21ksoftirqd/222:27:092
19317994016,4cyclictest33-21ksoftirqd/221:01:492
19317994016,4cyclictest33-21ksoftirqd/200:19:572
19308994027,3cyclictest9-21ksoftirqd/021:36:380
19308994026,3cyclictest9-21ksoftirqd/023:52:050
19308994022,9cyclictest9-21ksoftirqd/021:06:370
19308994021,5cyclictest9-21ksoftirqd/023:42:010
19308994019,5cyclictest9-21ksoftirqd/000:36:420
106891400,1ptp4l401ktimersoftd/301:16:083
106891400,1ptp4l401ktimersoftd/300:01:473
1931799398,5cyclictest33-21ksoftirqd/221:11:532
1931799398,5cyclictest33-21ksoftirqd/221:11:532
19317993930,4cyclictest33-21ksoftirqd/222:16:512
19317993924,3cyclictest33-21ksoftirqd/201:47:062
19317993922,14cyclictest33-21ksoftirqd/200:58:212
19317993915,4cyclictest33-21ksoftirqd/222:01:592
1930899398,6cyclictest9-21ksoftirqd/023:36:580
1930899394,7cyclictest9-21ksoftirqd/000:04:450
19308993933,3cyclictest9-21ksoftirqd/002:01:480
19308993921,8cyclictest9-21ksoftirqd/022:56:550
19308993915,4cyclictest9-21ksoftirqd/023:31:540
19308993915,4cyclictest9-21ksoftirqd/000:29:080
19308993914,4cyclictest9-21ksoftirqd/000:43:350
106891390,1ptp4l401ktimersoftd/322:46:513
106891390,1ptp4l401ktimersoftd/301:26:403
106891390,1ptp4l401ktimersoftd/301:05:443
106891390,1ptp4l401ktimersoftd/300:43:523
106891390,1ptp4l401ktimersoftd/300:18:073
106891390,16ptp4l401ktimersoftd/323:32:593
19317993830,4cyclictest33-21ksoftirqd/221:41:422
19317993825,10cyclictest33-21ksoftirqd/200:37:122
19317993818,9cyclictest33-21ksoftirqd/201:21:592
19317993816,4cyclictest33-21ksoftirqd/200:41:542
19317993815,15cyclictest33-21ksoftirqd/201:17:042
19308993828,3cyclictest9-21ksoftirqd/022:06:550
19308993828,3cyclictest9-21ksoftirqd/001:39:400
19308993827,3cyclictest9-21ksoftirqd/000:52:040
19308993827,3cyclictest9-21ksoftirqd/000:52:040
19308993823,4cyclictest9-21ksoftirqd/021:41:380
106891380,1ptp4l401ktimersoftd/323:42:193
106891380,1ptp4l401ktimersoftd/323:12:523
106891380,1ptp4l401ktimersoftd/323:06:443
106891380,1ptp4l401ktimersoftd/323:06:443
106891380,1ptp4l401ktimersoftd/323:04:253
106891380,1ptp4l401ktimersoftd/323:04:253
106891380,1ptp4l401ktimersoftd/321:26:593
106891380,1ptp4l401ktimersoftd/302:09:293
106891380,1ptp4l401ktimersoftd/301:49:123
106891380,1ptp4l401ktimersoftd/301:43:243
106891380,1ptp4l401ktimersoftd/301:28:223
106891380,1ptp4l401ktimersoftd/300:07:303
19317993731,3cyclictest33-21ksoftirqd/200:11:422
19317993718,6cyclictest33-21ksoftirqd/222:22:002
19317993718,10cyclictest33-21ksoftirqd/223:01:582
19317993718,10cyclictest33-21ksoftirqd/223:01:582
19317993712,4cyclictest33-21ksoftirqd/223:40:382
19308993718,8cyclictest9-21ksoftirqd/022:31:560
19308993718,5cyclictest9-21ksoftirqd/021:17:030
19308993715,7cyclictest9-21ksoftirqd/023:28:340
19308993714,4cyclictest9-21ksoftirqd/000:59:580
19308993713,4cyclictest9-21ksoftirqd/001:03:390
106891370,1ptp4l401ktimersoftd/323:48:563
106891370,1ptp4l401ktimersoftd/323:17:133
106891370,1ptp4l401ktimersoftd/322:53:413
106891370,1ptp4l401ktimersoftd/320:42:463
106891370,1ptp4l401ktimersoftd/301:55:493
106891370,1ptp4l401ktimersoftd/301:40:243
106891370,1ptp4l401ktimersoftd/301:32:523
106891370,1ptp4l401ktimersoftd/301:07:233
106891370,1ptp4l401ktimersoftd/300:36:543
106891370,1ptp4l401ktimersoftd/300:33:173
106891370,1ptp4l401ktimersoftd/300:22:203
106891370,0ptp4l401ktimersoftd/300:59:073
19317993630,3cyclictest33-21ksoftirqd/223:26:532
1931799362,7cyclictest33-21ksoftirqd/223:21:102
1931799362,3cyclictest121rcu_preempt21:31:382
19317993622,4cyclictest33-21ksoftirqd/222:31:552
19317993616,9cyclictest33-21ksoftirqd/220:46:362
19317993614,7cyclictest33-21ksoftirqd/220:47:052
19317993612,4cyclictest33-21ksoftirqd/202:07:212
1930899366,7cyclictest9-21ksoftirqd/020:51:550
19308993630,4cyclictest9-21ksoftirqd/023:11:590
19308993630,3cyclictest9-21ksoftirqd/023:07:010
19308993630,3cyclictest9-21ksoftirqd/023:07:010
19308993622,11cyclictest9-21ksoftirqd/002:07:050
19308993612,4cyclictest9-21ksoftirqd/023:06:190
19308993612,4cyclictest9-21ksoftirqd/023:06:190
19308993612,4cyclictest9-21ksoftirqd/022:55:350
106891360,1ptp4l401ktimersoftd/323:22:323
106891360,1ptp4l401ktimersoftd/322:16:513
106891360,1ptp4l401ktimersoftd/321:02:543
106891360,1ptp4l401ktimersoftd/301:59:163
106891360,1ptp4l401ktimersoftd/300:49:443
106891360,1ptp4l401ktimersoftd/300:49:443
19317993530,3cyclictest33-21ksoftirqd/223:46:562
19317993530,3cyclictest33-21ksoftirqd/201:07:022
19317993529,3cyclictest33-21ksoftirqd/201:06:432
1931799352,6cyclictest33-21ksoftirqd/201:56:022
19317993521,6cyclictest33-21ksoftirqd/200:12:002
1931799351,6cyclictest33-21ksoftirqd/200:51:512
1931799351,6cyclictest33-21ksoftirqd/200:51:512
1930899353,3cyclictest121rcu_preempt00:11:520
19308993528,4cyclictest9-21ksoftirqd/021:11:520
19308993528,4cyclictest9-21ksoftirqd/021:11:520
106891350,2ptp4l21711-21kworker/3:121:21:243
106891350,0ptp4l401ktimersoftd/321:36:573
1931799349,4cyclictest33-21ksoftirqd/221:46:572
1931799349,4cyclictest33-21ksoftirqd/202:01:562
19317993427,3cyclictest33-21ksoftirqd/223:06:522
19317993427,3cyclictest33-21ksoftirqd/223:06:522
19317993411,7cyclictest33-21ksoftirqd/221:32:082
19308993428,3cyclictest9-21ksoftirqd/001:36:430
19308993423,3cyclictest9-21ksoftirqd/020:42:060
19308993417,8cyclictest9-21ksoftirqd/021:06:550
19308993417,8cyclictest9-21ksoftirqd/021:06:550
19308993411,4cyclictest9-21ksoftirqd/001:09:550
19317993327,3cyclictest33-21ksoftirqd/223:57:032
19317993327,3cyclictest33-21ksoftirqd/223:32:002
1931799332,10cyclictest33-21ksoftirqd/221:21:542
19317993319,4cyclictest33-21ksoftirqd/223:41:572
1931799330,6cyclictest121rcu_preempt01:37:072
19308993328,3cyclictest9-21ksoftirqd/022:11:500
19308993328,3cyclictest9-21ksoftirqd/021:57:060
19308993327,3cyclictest9-21ksoftirqd/000:37:050
19308993319,4cyclictest9-21ksoftirqd/021:41:510
106891330,1ptp4l401ktimersoftd/321:46:483
106891330,1ptp4l401ktimersoftd/320:50:543
30682320,3sleep11931399cyclictest01:16:401
1931799323,3cyclictest121rcu_preempt21:16:492
19317993226,3cyclictest33-21ksoftirqd/222:36:562
1930899324,3cyclictest121rcu_preempt21:46:540
19308993226,3cyclictest9-21ksoftirqd/022:36:580
1930899320,3cyclictest121rcu_preempt21:51:530
106891310,1ptp4l401ktimersoftd/320:52:423
19313993024,3cyclictest233-21systemd-journal22:06:391
184122306,11sleep10-21swapper/120:37:041
106891300,1ptp4l401ktimersoftd/322:04:393
106891300,0ptp4l401ktimersoftd/320:59:433
19308992924,3cyclictest9-21ksoftirqd/020:41:360
106891290,1ptp4l401ktimersoftd/322:30:003
19313992821,4cyclictest22533-21sh22:51:391
19323992721,3cyclictest41-21ksoftirqd/321:41:493
19323992720,4cyclictest41-21ksoftirqd/321:26:013
19313992721,3cyclictest25-21ksoftirqd/121:46:031
19313992620,3cyclictest25-21ksoftirqd/121:39:041
19313992619,4cyclictest25-21ksoftirqd/122:40:581
19313992619,4cyclictest25-21ksoftirqd/122:28:501
19313992619,4cyclictest25-21ksoftirqd/121:14:391
19313992619,4cyclictest25-21ksoftirqd/121:14:391
19313992619,4cyclictest25-21ksoftirqd/100:28:541
19313992619,4cyclictest25-21ksoftirqd/100:19:551
106891260,10ptp4l401ktimersoftd/321:54:253
106891260,0ptp4l401ktimersoftd/322:10:083
106891260,0ptp4l401ktimersoftd/321:10:013
106891260,0ptp4l401ktimersoftd/321:10:013
588022518,3sleep125-21ksoftirqd/123:40:011
19323992519,3cyclictest41-21ksoftirqd/322:36:393
1931399253,13cyclictest14347-21ssh00:21:551
19313992519,3cyclictest25-21ksoftirqd/123:55:301
19313992518,4cyclictest25-21ksoftirqd/121:18:401
106891250,0ptp4l401ktimersoftd/322:34:503
1931399249,4cyclictest226762ptp4l21:52:021
1931399243,17cyclictest27815-21head20:56:531
19313992417,4cyclictest25-21ksoftirqd/121:03:071
19313992417,4cyclictest25-21ksoftirqd/101:36:441
19313992417,4cyclictest23879-21head01:37:021
106891240,1ptp4l401ktimersoftd/321:56:513
106891240,0ptp4l401ktimersoftd/322:14:223
106891240,0ptp4l401ktimersoftd/321:12:333
106891240,0ptp4l401ktimersoftd/321:12:333
19313992318,3cyclictest25-21ksoftirqd/121:09:041
19313992318,3cyclictest25-21ksoftirqd/121:09:041
19313992317,3cyclictest25-21ksoftirqd/121:32:131
19313992316,4cyclictest233-21systemd-journal22:11:391
19313992316,4cyclictest19353-21grep21:46:541
19313992312,7cyclictest47050irq/101-ens3-Tx01:26:551
1931399231,19cyclictest4042-21ssh23:05:171
1931399231,19cyclictest4042-21ssh23:05:171
1931399231,19cyclictest31952-21ssh01:45:081
1931399231,19cyclictest17341-21ssh22:46:121
1931399230,20cyclictest5930-21ssh01:18:121
19313992217,3cyclictest25-21ksoftirqd/100:32:111
19313992216,3cyclictest25-21ksoftirqd/102:09:281
19313992216,3cyclictest25-21ksoftirqd/100:57:571
19313992215,4cyclictest25-21ksoftirqd/100:46:491
19313992215,4cyclictest25-21ksoftirqd/100:46:491
1931399221,4cyclictest13999-21users23:47:101
19313992214,5cyclictest463-21needreboot00:07:001
1931399221,19cyclictest7887-21ssh23:08:291
1931399221,19cyclictest7887-21ssh23:08:291
1931399221,19cyclictest0-21swapper/100:00:221
1931399221,18cyclictest30300-21perl23:31:571
273532210,5sleep127294-21sh00:01:561
1931399213,16cyclictest0-21swapper/123:20:371
19313992116,3cyclictest10203-21grep01:22:131
19313992115,4cyclictest25-21ksoftirqd/100:42:151
19313992115,3cyclictest29202-21sh00:36:561
19313992115,3cyclictest25-21ksoftirqd/122:34:311
19313992114,4cyclictest7460-21cat23:41:541
19313992114,4cyclictest12157-21snmp_o5powerctl01:57:091
1931399211,2cyclictest0-21swapper/102:02:011
1931399211,16cyclictest25103-21grep20:51:501
1931399210,18cyclictest5422sleep122:16:371
1931399210,18cyclictest25420-21ssh01:06:151
1931399210,18cyclictest13879-21runrttasks00:53:181
1931399210,18cyclictest13879-21runrttasks00:53:181
19313992016,2cyclictest0-21swapper/122:21:521
19313992014,3cyclictest9282-21/usr/sbin/munin21:26:531
19313992014,3cyclictest25-21ksoftirqd/122:53:001
1931399201,17cyclictest20039-21apt-get23:21:531
1931399201,17cyclictest0-21swapper/123:11:531
1931399201,17cyclictest0-21swapper/101:08:031
1931399201,17cyclictest0-21swapper/100:12:541
1931399201,16cyclictest24086-21diskstats21:56:531
1931399200,4cyclictest768-21ssh01:46:521
1931399200,17cyclictest12695-21diskmemload22:58:291
1931399197,9cyclictest0-21swapper/123:28:571
19313991913,3cyclictest2186-21sendmail_mailtr22:17:021
1931399191,16cyclictest0-21swapper/120:48:331
1931399190,16cyclictest6725-21apt-key21:21:381
19313991811,4cyclictest19732-21cat20:41:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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