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2026-01-05 - 03:53
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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 50 highest latencies:
System rackbslot6.osadl.org (updated Mon Jan 05, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3112321570,5sleep1230199cyclictest21:25:091
1068911200,8ptp4l25726-21kworker/3:019:18:323
10842664,9sleep00-21swapper/019:18:210
106891660,1ptp4l401ktimersoftd/321:58:283
162652650,4sleep3391rcuc/300:25:583
9402590,2sleep10-21swapper/120:23:311
21762594,10sleep20-21swapper/219:22:432
106891590,1ptp4l401ktimersoftd/321:34:003
106891570,1ptp4l401ktimersoftd/323:07:513
106891570,1ptp4l401ktimersoftd/322:29:343
106891570,1ptp4l401ktimersoftd/322:29:343
100922560,2sleep30-21swapper/323:48:043
158232550,1sleep20-21swapper/200:25:132
106891530,1ptp4l401ktimersoftd/321:40:153
106891530,1ptp4l401ktimersoftd/300:18:033
106891530,1ptp4l401ktimersoftd/300:18:033
229699480,16cyclictest24746-21/usr/sbin/munin00:33:380
229699470,11cyclictest26395-21ssh21:53:200
106891450,1ptp4l401ktimersoftd/323:41:183
229699441,18cyclictest29148-21ssh00:06:530
106891430,1ptp4l401ktimersoftd/322:25:313
229699420,9cyclictest2096-21ptp4l22:33:250
229699420,9cyclictest2096-21ptp4l22:33:250
229699410,18cyclictest6152-21/usr/sbin/munin21:33:170
229699405,6cyclictest9-21ksoftirqd/000:01:010
229699403,5cyclictest9-21ksoftirqd/022:57:240
229699400,18cyclictest17130-21/usr/sbin/munin21:43:250
229699396,7cyclictest26683-21sh22:26:110
229699393,5cyclictest9-21ksoftirqd/022:01:530
229699390,8cyclictest28050-21irqstats20:13:200
229699390,6cyclictest0-21swapper/023:08:430
106891390,1ptp4l401ktimersoftd/323:58:483
106891390,1ptp4l401ktimersoftd/323:19:383
106891390,1ptp4l401ktimersoftd/323:12:083
106891390,1ptp4l401ktimersoftd/322:35:253
106891390,1ptp4l401ktimersoftd/322:35:253
106891390,1ptp4l401ktimersoftd/322:18:043
106891390,1ptp4l401ktimersoftd/322:05:273
106891390,1ptp4l401ktimersoftd/321:28:293
106891390,1ptp4l401ktimersoftd/300:35:013
229699386,28cyclictest14776-21latency_hist19:48:000
229699382,5cyclictest9-21ksoftirqd/000:52:260
106891380,1ptp4l401ktimersoftd/323:51:043
106891380,1ptp4l401ktimersoftd/323:16:173
106891380,1ptp4l401ktimersoftd/321:55:313
229699373,6cyclictest9-21ksoftirqd/023:56:320
229699371,15cyclictest27869-21diskmemload21:40:340
229699371,15cyclictest12958-21ssh22:44:150
106891370,1ptp4l401ktimersoftd/323:36:143
106891370,1ptp4l401ktimersoftd/323:31:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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