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2026-03-24 - 16:18
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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 rack2slot0.osadl.org (updated Tue Mar 24, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29762940,2sleep02121099cyclictest10:24:220
276222900,1sleep02121099cyclictest10:56:180
321992770,0sleep10-21swapper/112:04:401
61482700,0sleep36132-21sshd11:46:043
209042600,0sleep30-21swapper/309:15:243
26972590,1sleep12683-21sshd10:37:571
4972570,0sleep10-21swapper/112:26:351
292052560,0sleep30-21swapper/312:15:203
79682540,0sleep20-21swapper/212:38:102
312442530,0sleep348-21kauditd11:02:023
244972530,1sleep00-21swapper/012:28:380
234492530,0sleep30-21swapper/309:53:173
225632520,0sleep10-21swapper/111:25:391
211882520,0sleep00-21swapper/012:31:030
217572510,1sleep2321ktimersoftd/212:22:562
217572510,1sleep2321ktimersoftd/212:22:562
215362510,0sleep20-21swapper/210:28:402
161102510,0sleep10-21swapper/111:17:021
314202500,0sleep20-21swapper/209:35:012
298392500,0sleep00-21swapper/010:42:560
256622500,1sleep025620-21sshd10:09:520
112852490,0sleep10-21swapper/110:49:341
305012480,0sleep00-21swapper/010:29:260
260092480,0sleep00-21swapper/010:39:560
42282470,0sleep00-21swapper/010:16:130
251422460,0sleep00-21swapper/011:01:310
186642460,2sleep32122799cyclictest11:20:003
2075524035,3sleep20-21swapper/207:05:382
2081122210,7sleep30-21swapper/307:06:243
2091622110,7sleep00-21swapper/007:07:410
2077922111,6sleep10-21swapper/107:05:571
149762190,1sleep014968-21sshd11:44:080
262202170,0sleep20-21swapper/212:01:222
21227991715,1cyclictest925-21lspci12:26:373
142722170,0sleep00-21swapper/011:30:230
100802170,0sleep10-21swapper/109:21:511
23352160,0sleep20-21swapper/211:15:512
21210991615,0cyclictest527-40kipmi011:48:240
227382150,0sleep10-21swapper/111:04:041
223482150,0sleep20-21swapper/211:14:552
213772150,0sleep10-21swapper/112:31:041
21216991514,0cyclictest19636-21kworker/1:409:58:231
193412150,0sleep00-21swapper/009:50:130
187842150,0sleep018763-21sshd09:11:240
127102150,0sleep00-21swapper/009:46:570
21220991412,1cyclictest14399-21sshd10:36:112
21216991413,0cyclictest6107-21kworker/1:210:52:271
21216991412,1cyclictest6107-21kworker/1:210:57:191
21216991412,1cyclictest6107-21kworker/1:210:43:371
21216991412,1cyclictest26126-21kworker/1:311:54:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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