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2026-07-07 - 12:13
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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 100 highest latencies:
System rackbslot6.osadl.org (updated Tue Jul 07, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311121630,5sleep22117899cyclictest01:04:442
2300521530,5sleep22117899cyclictest21:09:292
1514421440,4sleep32118499cyclictest01:17:493
1068911290,7ptp4l18594-21kworker/3:020:59:313
218912680,3sleep2321ktimersoftd/200:51:152
106891670,1ptp4l401ktimersoftd/323:30:423
21178996511,24cyclictest12327-21diskmemload00:43:522
192702650,8sleep10-21swapper/120:59:261
106891630,2ptp4l401ktimersoftd/323:25:533
19312610,2sleep20-21swapper/223:59:152
101652610,4sleep12116899cyclictest00:06:131
106891600,1ptp4l401ktimersoftd/302:07:593
106891590,1ptp4l401ktimersoftd/302:26:373
104272580,2sleep310428-21sh00:06:393
2116899555,14cyclictest24569-21rm23:15:011
103122530,1sleep30-21swapper/302:19:363
103122530,1sleep30-21swapper/302:19:363
106891520,1ptp4l401ktimersoftd/300:51:093
21168995120,8cyclictest25-21ksoftirqd/100:49:331
206522510,3sleep125-21ksoftirqd/123:11:451
21168995018,9cyclictest25-21ksoftirqd/100:10:161
21168994920,11cyclictest25-21ksoftirqd/100:03:501
21168994919,9cyclictest25-21ksoftirqd/102:00:061
21168994919,11cyclictest25-21ksoftirqd/100:16:541
21168994919,10cyclictest25-21ksoftirqd/100:31:471
21168994919,10cyclictest25-21ksoftirqd/100:31:471
21168994819,5cyclictest25-21ksoftirqd/102:13:381
21168994819,11cyclictest25-21ksoftirqd/123:36:231
21168994818,10cyclictest25-21ksoftirqd/100:23:121
21168994813,4cyclictest25-21ksoftirqd/101:58:431
209042484,30sleep20-21swapper/221:02:192
21168994719,10cyclictest25-21ksoftirqd/101:38:431
21168994719,10cyclictest25-21ksoftirqd/101:20:051
21168994719,10cyclictest25-21ksoftirqd/100:47:011
21168994717,10cyclictest25-21ksoftirqd/102:21:141
21168994717,10cyclictest25-21ksoftirqd/102:21:141
2117899461,19cyclictest24745-21latency_hist23:49:192
21168994618,10cyclictest25-21ksoftirqd/123:54:161
21168994617,8cyclictest25-21ksoftirqd/102:24:331
21168994616,9cyclictest25-21ksoftirqd/102:16:091
21168994611,4cyclictest25-21ksoftirqd/123:08:511
21168994518,3cyclictest25-21ksoftirqd/101:41:461
21168994518,3cyclictest25-21ksoftirqd/101:05:101
21168994518,10cyclictest25-21ksoftirqd/101:27:231
21168994517,11cyclictest25-21ksoftirqd/101:52:531
21168994517,10cyclictest25-21ksoftirqd/101:01:001
21168994515,8cyclictest25-21ksoftirqd/100:56:341
209072454,30sleep00-21swapper/021:02:210
106891450,0ptp4l401ktimersoftd/300:58:553
106891440,1ptp4l401ktimersoftd/300:59:503
21168994317,10cyclictest25-21ksoftirqd/101:48:171
2116899424,5cyclictest25-21ksoftirqd/123:42:561
2116899423,5cyclictest25-21ksoftirqd/122:09:341
2116899423,5cyclictest25-21ksoftirqd/101:09:491
21168994218,4cyclictest25-21ksoftirqd/123:31:471
59442410,2sleep20-21swapper/201:40:372
2116899412,5cyclictest25-21ksoftirqd/100:27:391
21168994116,4cyclictest25-21ksoftirqd/123:45:241
2116899405,5cyclictest25-21ksoftirqd/101:14:331
21168994019,7cyclictest25-21ksoftirqd/122:42:241
2116899401,6cyclictest25-21ksoftirqd/122:24:161
21168994011,4cyclictest25-21ksoftirqd/100:38:261
21168994011,4cyclictest25-21ksoftirqd/100:38:261
106891400,1ptp4l401ktimersoftd/302:00:143
106891400,1ptp4l401ktimersoftd/300:44:453
2116899392,5cyclictest25-21ksoftirqd/123:57:141
21168993919,8cyclictest25-21ksoftirqd/121:37:121
2116899391,6cyclictest25-21ksoftirqd/121:14:341
106891390,1ptp4l401ktimersoftd/323:48:153
106891390,1ptp4l401ktimersoftd/322:54:383
106891390,1ptp4l401ktimersoftd/322:54:383
106891390,1ptp4l401ktimersoftd/302:30:543
106891390,1ptp4l401ktimersoftd/301:38:293
106891390,1ptp4l401ktimersoftd/301:27:443
106891390,1ptp4l401ktimersoftd/300:37:303
106891390,1ptp4l401ktimersoftd/300:37:303
106891390,0ptp4l401ktimersoftd/300:41:013
2117899388,13cyclictest47150irq/102-ens3-Tx00:31:462
2117899388,13cyclictest47150irq/102-ens3-Tx00:31:462
2117899383,28cyclictest14933-21apt-get23:39:312
2117899381,33cyclictest23477-21fschecks_count01:59:382
2116899382,5cyclictest25-21ksoftirqd/123:21:111
21168993818,8cyclictest25-21ksoftirqd/122:07:191
21168993818,10cyclictest25-21ksoftirqd/123:25:581
2116899381,5cyclictest25-21ksoftirqd/121:44:291
2116899381,5cyclictest25-21ksoftirqd/101:32:461
2116899380,5cyclictest25-21ksoftirqd/102:32:511
106891380,2ptp4l9856-21kworker/3:123:35:113
106891380,1ptp4l401ktimersoftd/323:56:533
106891380,1ptp4l401ktimersoftd/323:17:013
106891380,1ptp4l401ktimersoftd/302:18:393
106891380,1ptp4l401ktimersoftd/302:11:253
106891380,1ptp4l401ktimersoftd/300:24:443
106891380,1ptp4l401ktimersoftd/300:16:573
106891380,0ptp4l401ktimersoftd/301:40:033
21178993721,13cyclictest33-21ksoftirqd/222:43:112
2117899370,20cyclictest0-21swapper/222:44:412
2116899373,5cyclictest25-21ksoftirqd/122:14:461
21168993719,5cyclictest25-21ksoftirqd/122:49:301
21168993719,5cyclictest25-21ksoftirqd/122:49:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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