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2025-07-31 - 09:33
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 50 highest latencies:
System rackcslot2.osadl.org (updated Thu Jul 31, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
754927461,8sleep00-21swapper/019:06:220
740226957,8sleep10-21swapper/119:04:501
163572670,1sleep10-21swapper/119:27:541
7850993310,11cyclictest0-21swapper/120:25:351
7849993310,1cyclictest0-21swapper/022:02:040
7850993030,0cyclictest0-21swapper/121:38:081
785099290,26cyclictest0-21swapper/123:27:471
7850992821,1cyclictest24-21ksoftirqd/120:14:361
7849992828,0cyclictest0-21swapper/000:25:570
7849992821,4cyclictest20866-21apache222:22:050
7850992618,5cyclictest20866-21apache200:33:051
785099260,25cyclictest0-21swapper/119:12:461
7850992523,1cyclictest0-21swapper/122:29:311
785099250,21cyclictest11487-21smartctl23:52:501
7849992518,5cyclictest20884-21apache223:12:200
784999251,2cyclictest0-21swapper/021:43:560
784999251,23cyclictest0-21swapper/021:15:340
785099249,9cyclictest20866-21apache222:45:001
7850992422,2cyclictest20884-21apache222:52:361
7850992414,6cyclictest20866-21apache220:18:531
7850992410,12cyclictest0-21swapper/123:16:451
784999249,14cyclictest0-21swapper/022:31:450
784999246,16cyclictest0-21swapper/020:27:510
7849992410,2cyclictest0-21swapper/022:43:090
784999240,0cyclictest0-21swapper/023:05:410
7850992316,1cyclictest20866-21apache223:03:211
7850992310,10cyclictest0-21swapper/121:54:421
785099230,21cyclictest0-21swapper/120:51:291
784999233,15cyclictest0-21swapper/022:56:300
7849992323,0cyclictest0-21swapper/023:38:220
7849992313,3cyclictest22207-21ssh00:07:550
7850992221,1cyclictest0-21swapper/122:05:251
7850992217,3cyclictest20884-21apache200:09:491
7850992217,3cyclictest20866-21apache221:09:041
7850992211,6cyclictest0-21swapper/119:57:491
7850992210,9cyclictest0-21swapper/120:04:061
7849992222,0cyclictest0-21swapper/021:19:170
7849992210,5cyclictest0-21swapper/000:17:490
7849992210,4cyclictest0-21swapper/000:12:490
785099211,12cyclictest4498-21taskset21:27:511
785099211,12cyclictest168-21systemd-journal23:48:021
7850992110,7cyclictest0-21swapper/123:37:341
7850992110,4cyclictest0-21swapper/121:22:521
785099210,11cyclictest12616-21ssh22:22:591
784999215,10cyclictest0-21swapper/023:52:490
784999213,9cyclictest0-21swapper/021:37:580
7849992118,1cyclictest0-21swapper/023:36:040
7849992114,2cyclictest21497-21diskmemload21:28:270
7849992112,7cyclictest20866-21apache223:44:140
7849992111,5cyclictest97850irq/107-eth1-rx21:09:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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