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2026-07-04 - 08:01
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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 Sat Jul 04, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1624221460,3sleep31974299cyclictest23:04:183
1624221460,3sleep31974299cyclictest23:04:183
1068911040,3ptp4l401ktimersoftd/320:59:263
105791840,3getstats46850irq/99-ens3-TxR23:21:503
106891740,1ptp4l401ktimersoftd/300:57:303
106891740,1ptp4l401ktimersoftd/300:57:303
38302710,1sleep00-21swapper/023:24:390
124412710,2sleep20-21swapper/201:12:492
106891710,1ptp4l401ktimersoftd/323:16:513
181162650,5sleep21973499cyclictest23:38:502
310082640,2sleep00-21swapper/000:25:330
148402640,5sleep214843-21needreboot23:03:002
148402640,5sleep214843-21needreboot23:03:002
11992620,5sleep11972999cyclictest23:22:511
19724996151,5cyclictest9-21ksoftirqd/002:22:530
76262600,5sleep31974299cyclictest00:02:363
162252570,2sleep30-21swapper/302:22:083
106891570,1ptp4l401ktimersoftd/323:25:573
106891540,1ptp4l401ktimersoftd/321:21:103
106891540,1ptp4l401ktimersoftd/321:21:103
106891520,1ptp4l401ktimersoftd/300:46:293
19724994914,4cyclictest9-21ksoftirqd/023:32:570
19724994823,4cyclictest9-21ksoftirqd/002:30:400
106891480,14ptp4l25822-21kworker/3:201:53:463
1972499466,3cyclictest9-21ksoftirqd/021:02:350
19724994623,3cyclictest9-21ksoftirqd/001:28:320
19724994622,4cyclictest9-21ksoftirqd/023:59:130
19724994622,4cyclictest9-21ksoftirqd/022:27:380
19724994616,7cyclictest9-21ksoftirqd/001:38:110
1972499456,3cyclictest9-21ksoftirqd/000:07:400
19724994539,3cyclictest9-21ksoftirqd/022:32:420
19724994531,6cyclictest9-21ksoftirqd/001:05:030
19724994525,7cyclictest9-21ksoftirqd/022:12:580
19724994522,4cyclictest9-21ksoftirqd/023:21:210
19724994522,4cyclictest9-21ksoftirqd/023:09:040
19724994522,4cyclictest9-21ksoftirqd/023:09:040
19724994521,4cyclictest9-21ksoftirqd/023:42:080
19724994514,7cyclictest9-21ksoftirqd/000:43:080
19724994438,4cyclictest9-21ksoftirqd/021:17:400
19724994438,4cyclictest9-21ksoftirqd/021:17:400
1972499443,3cyclictest9-21ksoftirqd/023:27:540
19724994421,3cyclictest9-21ksoftirqd/001:17:050
19724994420,4cyclictest9-21ksoftirqd/000:54:090
19724994420,4cyclictest9-21ksoftirqd/000:54:090
19724994419,4cyclictest9-21ksoftirqd/000:37:020
19724994336,4cyclictest9-21ksoftirqd/021:12:400
19724994336,4cyclictest9-21ksoftirqd/021:12:400
19724994321,4cyclictest9-21ksoftirqd/000:38:160
19724994321,3cyclictest9-21ksoftirqd/021:38:120
19724994321,3cyclictest9-21ksoftirqd/001:59:550
19724994320,5cyclictest9-21ksoftirqd/001:36:520
19724994319,4cyclictest9-21ksoftirqd/001:48:010
106891430,1ptp4l401ktimersoftd/300:19:023
19724994236,3cyclictest9-21ksoftirqd/021:47:480
19724994220,3cyclictest9-21ksoftirqd/000:09:260
19724994219,4cyclictest9-21ksoftirqd/022:47:590
1935324220,11sleep125-21ksoftirqd/120:59:051
19724994131,3cyclictest9-21ksoftirqd/023:02:570
19724994131,3cyclictest9-21ksoftirqd/023:02:570
19724994131,3cyclictest9-21ksoftirqd/000:18:010
19724994124,4cyclictest9-21ksoftirqd/022:07:580
19724994119,4cyclictest9-21ksoftirqd/021:33:070
19724994119,4cyclictest9-21ksoftirqd/001:53:090
19724994118,5cyclictest9-21ksoftirqd/002:20:000
19724994117,4cyclictest9-21ksoftirqd/001:18:170
1945124122,8sleep20-21swapper/221:00:242
1972499409,3cyclictest9-21ksoftirqd/000:13:020
1972499403,7cyclictest9-21ksoftirqd/000:48:020
1972499403,3cyclictest9-21ksoftirqd/021:47:360
1972499402,3cyclictest9-21ksoftirqd/001:23:100
1972499402,3cyclictest121rcu_preempt00:57:490
19724994020,7cyclictest9-21ksoftirqd/022:38:080
1972499397,3cyclictest9-21ksoftirqd/023:50:050
1972499394,6cyclictest9-21ksoftirqd/021:57:520
19724993934,3cyclictest9-21ksoftirqd/001:47:420
19724993927,3cyclictest9-21ksoftirqd/023:12:510
19724993927,3cyclictest9-21ksoftirqd/002:07:580
19724993916,3cyclictest9-21ksoftirqd/002:07:150
19724993912,7cyclictest9-21ksoftirqd/000:31:280
1972499390,4cyclictest13287-21diskmemload01:07:530
106891390,1ptp4l401ktimersoftd/301:33:023
106891390,1ptp4l401ktimersoftd/301:18:113
19742993833,3cyclictest41-21ksoftirqd/321:07:363
1972499385,7cyclictest9-21ksoftirqd/021:03:050
1972499385,3cyclictest121rcu_preempt23:53:500
1972499384,3cyclictest9-21ksoftirqd/022:54:060
19724993833,3cyclictest9-21ksoftirqd/023:42:540
19724993822,4cyclictest9-21ksoftirqd/002:15:190
106891380,1ptp4l401ktimersoftd/323:31:263
106891380,1ptp4l401ktimersoftd/302:32:393
106891380,1ptp4l401ktimersoftd/302:13:043
106891380,1ptp4l401ktimersoftd/301:58:163
106891380,1ptp4l401ktimersoftd/301:30:583
106891380,1ptp4l401ktimersoftd/300:33:223
106891380,0ptp4l401ktimersoftd/301:02:003
1972499377,3cyclictest9-21ksoftirqd/022:30:180
1972499375,7cyclictest9-21ksoftirqd/021:52:580
19724993732,3cyclictest9-21ksoftirqd/021:07:390
106891370,1ptp4l401ktimersoftd/323:48:223
106891370,1ptp4l401ktimersoftd/323:08:233
106891370,1ptp4l401ktimersoftd/323:08:233
106891370,1ptp4l401ktimersoftd/322:56:393
106891370,1ptp4l401ktimersoftd/321:42:503
106891370,1ptp4l401ktimersoftd/302:23:253
106891370,1ptp4l401ktimersoftd/302:09:453
106891370,1ptp4l401ktimersoftd/302:03:323
106891370,1ptp4l401ktimersoftd/301:38:503
106891370,1ptp4l401ktimersoftd/301:26:173
106891370,1ptp4l401ktimersoftd/301:15:373
106891370,1ptp4l401ktimersoftd/301:11:153
106891370,0ptp4l401ktimersoftd/301:02:573
106891360,1ptp4l401ktimersoftd/323:53:443
106891360,1ptp4l401ktimersoftd/300:39:203
106891360,1ptp4l401ktimersoftd/300:10:563
106891360,1ptp4l401ktimersoftd/300:04:553
106891360,0ptp4l401ktimersoftd/300:28:023
1972499355,6cyclictest9-21ksoftirqd/022:05:040
19724993530,3cyclictest9-21ksoftirqd/022:58:090
19724993527,5cyclictest9-21ksoftirqd/022:18:010
1972499350,3cyclictest9-21ksoftirqd/021:28:030
106891350,1ptp4l401ktimersoftd/300:17:323
1972499344,7cyclictest9-21ksoftirqd/021:22:460
1972499344,7cyclictest9-21ksoftirqd/021:22:460
106891340,2ptp4l32617-21kworker/3:022:40:453
106891340,0ptp4l401ktimersoftd/323:43:193
1973499330,30cyclictest3798-21sh22:42:372
19724993328,3cyclictest9-21ksoftirqd/022:42:570
106891330,1ptp4l401ktimersoftd/323:40:453
1452913225,3phc2sys41-21ksoftirqd/321:27:543
106891320,1ptp4l401ktimersoftd/301:43:363
106891320,1ptp4l401ktimersoftd/300:49:473
106891320,0ptp4l401ktimersoftd/322:44:043
19734993121,8cyclictest33-21ksoftirqd/221:06:562
19729993126,3cyclictest25-21ksoftirqd/100:27:441
106891310,1ptp4l401ktimersoftd/323:33:483
106891310,1ptp4l401ktimersoftd/322:00:553
106891310,1ptp4l401ktimersoftd/300:23:003
106891310,10ptp4l401ktimersoftd/322:11:353
106891310,0ptp4l401ktimersoftd/322:32:543
19734993023,4cyclictest33-21ksoftirqd/201:37:542
106891300,1ptp4l401ktimersoftd/322:14:473
19734992910,12cyclictest32223-21ssh01:32:532
1972999295,3cyclictest121rcu_preempt23:32:121
106891290,0ptp4l401ktimersoftd/322:50:103
19729992823,3cyclictest25-21ksoftirqd/102:07:571
106891280,0ptp4l401ktimersoftd/322:20:103
106891280,0ptp4l401ktimersoftd/321:24:413
106891280,0ptp4l401ktimersoftd/321:24:413
319202270,2sleep10-21swapper/100:58:181
19734992721,3cyclictest33-21ksoftirqd/201:53:002
19734992721,3cyclictest33-21ksoftirqd/200:52:252
1972999270,3cyclictest121rcu_preempt01:22:021
19742992619,4cyclictest41-21ksoftirqd/322:03:243
19742992619,4cyclictest41-21ksoftirqd/321:39:153
19734992620,3cyclictest33-21ksoftirqd/200:12:062
19734992619,4cyclictest7680-21munin-plugin-st00:02:402
19734992619,4cyclictest33-21ksoftirqd/221:43:562
19734992619,4cyclictest33-21ksoftirqd/221:20:392
19734992619,4cyclictest33-21ksoftirqd/221:20:392
19729992621,3cyclictest25-21ksoftirqd/102:17:561
19729992620,3cyclictest25-21ksoftirqd/122:34:311
19729992619,4cyclictest25-21ksoftirqd/122:52:081
106891260,1ptp4l401ktimersoftd/322:57:523
106891260,0ptp4l401ktimersoftd/321:54:203
19742992519,3cyclictest41-21ksoftirqd/322:29:033
19742992519,3cyclictest41-21ksoftirqd/321:16:433
19742992519,3cyclictest41-21ksoftirqd/321:16:433
19734992520,3cyclictest33-21ksoftirqd/202:27:472
19734992519,3cyclictest33-21ksoftirqd/223:08:352
19734992519,3cyclictest33-21ksoftirqd/223:08:352
19734992518,4cyclictest33-21ksoftirqd/223:45:002
19734992518,4cyclictest33-21ksoftirqd/202:11:352
19734992518,4cyclictest33-21ksoftirqd/201:20:032
19734992518,4cyclictest33-21ksoftirqd/200:47:232
19729992519,3cyclictest25-21ksoftirqd/122:08:441
19729992519,3cyclictest25-21ksoftirqd/100:14:141
19742992418,3cyclictest391rcuc/301:47:593
19734992419,3cyclictest33-21ksoftirqd/221:07:392
19734992419,3cyclictest33-21ksoftirqd/201:58:012
19734992418,3cyclictest33-21ksoftirqd/222:31:172
19734992418,3cyclictest33-21ksoftirqd/221:32:092
19734992417,4cyclictest33-21ksoftirqd/222:54:132
19734992417,4cyclictest33-21ksoftirqd/222:16:112
19734992417,4cyclictest33-21ksoftirqd/221:38:102
19734992417,4cyclictest33-21ksoftirqd/221:34:002
1972999244,13cyclictest12558-21ssh01:12:531
1972999243,13cyclictest8082-21ssh00:02:521
19729992419,3cyclictest25-21ksoftirqd/123:52:401
19729992419,3cyclictest25-21ksoftirqd/122:27:181
19729992419,3cyclictest25-21ksoftirqd/121:17:361
19729992419,3cyclictest25-21ksoftirqd/121:17:361
19729992418,3cyclictest25-21ksoftirqd/121:11:301
19729992417,4cyclictest4721-21tail21:33:051
19729992417,4cyclictest25-21ksoftirqd/121:48:561
19729992415,6cyclictest25-21ksoftirqd/122:17:371
106891240,1ptp4l401ktimersoftd/322:22:493
106891240,1ptp4l401ktimersoftd/321:32:483
106891240,1ptp4l401ktimersoftd/321:07:473
93242230,5sleep233-21ksoftirqd/223:30:392
19734992318,3cyclictest33-21ksoftirqd/202:17:592
19734992318,3cyclictest33-21ksoftirqd/200:52:542
19734992318,3cyclictest33-21ksoftirqd/200:52:542
19734992317,4cyclictest33-21ksoftirqd/201:23:042
19734992317,3cyclictest33-21ksoftirqd/201:28:022
19734992316,4cyclictest33-21ksoftirqd/222:57:472
19734992316,4cyclictest33-21ksoftirqd/222:12:222
19734992316,4cyclictest33-21ksoftirqd/221:24:082
19734992316,4cyclictest33-21ksoftirqd/221:24:082
19734992316,4cyclictest33-21ksoftirqd/200:39:522
19734992315,5cyclictest9891-21cron00:37:402
19734992311,9cyclictest47150irq/102-ens3-Tx23:22:572
19729992318,3cyclictest25-21ksoftirqd/123:58:041
19729992318,3cyclictest25-21ksoftirqd/122:04:051
19729992317,4cyclictest25-21ksoftirqd/100:24:301
19729992316,5cyclictest25-21ksoftirqd/101:55:011
19729992316,4cyclictest2776-21cron21:32:361
19729992316,4cyclictest25-21ksoftirqd/122:40:071
124022316,3sleep125-21ksoftirqd/102:07:131
106891230,1ptp4l401ktimersoftd/321:47:593
222792220,2sleep10-21swapper/123:11:071
222792220,2sleep10-21swapper/123:11:071
19734992217,3cyclictest33-21ksoftirqd/201:05:412
19734992216,3cyclictest33-21ksoftirqd/222:43:132
19734992216,3cyclictest33-21ksoftirqd/222:05:422
19734992215,4cyclictest33-21ksoftirqd/222:48:152
19734992215,4cyclictest33-21ksoftirqd/221:16:222
19734992215,4cyclictest33-21ksoftirqd/221:16:222
19734992215,4cyclictest33-21ksoftirqd/200:17:122
1972999229,6cyclictest0-21swapper/101:22:521
19729992216,3cyclictest25-21ksoftirqd/123:44:231
19729992214,5cyclictest47050irq/101-ens3-Tx00:07:491
321482210,2sleep20-21swapper/223:21:042
1973499218,10cyclictest11711-21cut23:32:572
19734992116,3cyclictest8964-21sendmail_mailqu01:08:052
19734992115,4cyclictest33-21ksoftirqd/223:51:432
19734992115,3cyclictest33-21ksoftirqd/222:34:222
19734992115,3cyclictest33-21ksoftirqd/221:54:202
19734992114,5cyclictest13287-21diskmemload00:23:452
19734992114,4cyclictest33-21ksoftirqd/222:24:182
1972999213,9cyclictest10944-21ssh23:32:511
1972999212,16cyclictest26182-21needreboot00:52:591
1972999212,16cyclictest26182-21needreboot00:52:591
19729992116,3cyclictest25-21ksoftirqd/101:48:081
19729992115,4cyclictest25-21ksoftirqd/122:57:291
19729992115,4cyclictest25-21ksoftirqd/121:41:301
19729992115,3cyclictest6642-21sh01:38:191
19729992115,3cyclictest25-21ksoftirqd/123:17:571
19729992115,3cyclictest25-21ksoftirqd/121:43:231
19729992115,3cyclictest25-21ksoftirqd/121:24:551
19729992115,3cyclictest25-21ksoftirqd/121:24:551
19729992115,3cyclictest25-21ksoftirqd/121:21:131
19729992115,3cyclictest25-21ksoftirqd/121:21:131
19729992115,3cyclictest13065-21runrttasks21:52:531
19729992114,4cyclictest25-21ksoftirqd/122:19:321
19729992113,4cyclictest7580-21irqrtprio02:13:001
19729992112,5cyclictest31638-21latency23:52:581
1972999211,17cyclictest4141-21ssh01:03:071
1972999211,17cyclictest15429-21grep23:03:091
1972999211,17cyclictest15429-21grep23:03:091
1973499204,13cyclictest18515-21switchtime02:23:092
1973499202,12cyclictest405-21ssh00:27:512
19734992014,4cyclictest33-21ksoftirqd/201:46:292
19734992014,4cyclictest33-21ksoftirqd/200:57:552
19734992014,3cyclictest9153-21sh02:13:552
19734992014,3cyclictest33-21ksoftirqd/222:18:232
19734992014,3cyclictest24673-21missed_timers23:12:592
19734992014,3cyclictest10356-21cstates21:47:492
19734992013,4cyclictest30493-21cat02:03:022
1972999208,3cyclictest8877-21sh00:35:571
19729992015,3cyclictest20522-21cut00:47:551
19729992014,3cyclictest25-21ksoftirqd/121:04:321
19729992013,4cyclictest7799-21expr01:07:551
19729992013,4cyclictest32015-21cut01:32:421
19729992013,4cyclictest26109-21unixbench-2d01:58:111
19729992013,4cyclictest23972-21who02:28:121
19729992013,4cyclictest23627-21sh23:12:501
1972999201,16cyclictest18512-21ssh02:23:091
19734991914,3cyclictest33-21ksoftirqd/200:18:012
19734991913,3cyclictest32686-21sh23:53:282
19734991913,3cyclictest14868-21seq21:57:392
19734991912,4cyclictest13287-21diskmemload01:47:502
19734991911,5cyclictest13287-21diskmemload00:07:322
19729991913,4cyclictest47050irq/101-ens3-Tx00:38:031
19729991913,4cyclictest14880-21/usr/sbin/munin21:57:571
19729991913,3cyclictest929-21awk01:33:021
19729991913,3cyclictest31393-21mktemp22:32:381
19729991913,3cyclictest16370-21sh23:37:541
19729991913,3cyclictest16313-21cat00:43:001
19729991912,4cyclictest25-21ksoftirqd/122:43:241
19729991912,4cyclictest23769-21sh00:17:581
19729991911,4cyclictest9531-21/usr/sbin/munin01:42:581
19729991812,3cyclictest1055-21runrttasks23:02:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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