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2026-09-04 - 15:49
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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 100 highest latencies:
System rack1slot1.osadl.org (updated Fri Sep 04, 2026 12:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
186102209158,25sleep30-21swapper/307:09:083
186792200162,24sleep10-21swapper/107:09:581
186582199160,25sleep20-21swapper/207:09:442
184432197159,24sleep00-21swapper/007:06:560
34722200,1sleep23473-21kernelversion11:15:132
1877299150,14cyclictest0-21swapper/109:45:151
18787991210,1cyclictest35-21ksoftirqd/311:59:593
18787991110,1cyclictest35-21ksoftirqd/307:15:013
1878799109,1cyclictest35-21ksoftirqd/312:27:223
1878799109,1cyclictest35-21ksoftirqd/309:20:003
1878799108,1cyclictest35-21ksoftirqd/312:05:003
1878799108,1cyclictest35-21ksoftirqd/307:24:593
1878099108,1cyclictest28-21ksoftirqd/208:55:002
1878099100,6cyclictest0-21swapper/210:25:152
187879999,0cyclictest35-21ksoftirqd/310:10:183
187879998,1cyclictest35-21ksoftirqd/310:32:453
187879998,1cyclictest35-21ksoftirqd/310:00:003
187879997,1cyclictest35-21ksoftirqd/307:35:293
187809997,1cyclictest28-21ksoftirqd/207:19:592
187639998,1cyclictest9-21ksoftirqd/010:45:030
187639998,1cyclictest9-21ksoftirqd/010:20:000
187639997,1cyclictest9-21ksoftirqd/008:50:000
187879987,1cyclictest35-21ksoftirqd/312:10:003
187879987,1cyclictest35-21ksoftirqd/310:50:003
187879987,1cyclictest35-21ksoftirqd/310:10:003
187879986,1cyclictest35-21ksoftirqd/309:20:133
187879986,1cyclictest11301-21snmpd10:35:573
187879986,1cyclictest11301-21snmpd09:25:463
187879986,1cyclictest11301-21snmpd09:11:343
187879982,4cyclictest557-21irqbalance10:28:263
187809987,1cyclictest28-21ksoftirqd/210:24:122
187809986,1cyclictest61650irq/122-eno111:50:302
187809986,1cyclictest61650irq/122-eno111:35:162
187809986,1cyclictest61650irq/122-eno110:55:012
187809986,1cyclictest61650irq/122-eno107:45:002
187809986,1cyclictest28-21ksoftirqd/208:00:002
187809986,1cyclictest1387-21sendmail-msp07:40:012
187809986,1cyclictest11301-21snmpd11:44:382
187809986,1cyclictest11301-21snmpd10:14:562
187809986,1cyclictest11301-21snmpd07:11:392
187809985,3cyclictest18759-21cyclictest12:20:462
187809985,2cyclictest11301-21snmpd11:28:442
187809981,6cyclictest0-21swapper/209:02:292
187809980,7cyclictest0-21swapper/209:51:092
187809980,7cyclictest0-21swapper/209:20:012
187729980,1cyclictest0-21swapper/112:21:051
187639987,1cyclictest9-21ksoftirqd/011:40:010
187639987,1cyclictest22828-21ssh10:10:200
187639987,1cyclictest11618-21diskmemload12:31:480
187639986,1cyclictest11301-21snmpd09:35:520
187639983,4cyclictest9-21ksoftirqd/010:24:100
187639981,6cyclictest9388-21ssh11:25:010
187639981,6cyclictest0-21swapper/007:14:540
187639981,1cyclictest0-21swapper/011:03:550
187639980,7cyclictest27476-21ntp_states12:35:150
187639980,5cyclictest6946-21sed09:00:000
187639980,3cyclictest0-21swapper/007:55:080
187639980,1cyclictest32523-21memory11:10:210
187639980,1cyclictest29582-21ssh11:52:120
187879976,1cyclictest35-21ksoftirqd/311:19:593
187879976,1cyclictest35-21ksoftirqd/311:05:123
187879976,1cyclictest35-21ksoftirqd/311:00:123
187879976,1cyclictest35-21ksoftirqd/311:00:013
187879976,1cyclictest35-21ksoftirqd/309:35:013
187879975,1cyclictest3627-21ssh09:42:423
187879975,1cyclictest35-21ksoftirqd/308:15:093
187879975,1cyclictest12019-21ssh11:27:283
187879975,1cyclictest11301-21snmpd07:43:443
187879973,1cyclictest27477-21ntp_states12:35:153
187879973,1cyclictest11618-21diskmemload11:45:513
187879972,2cyclictest11618-21diskmemload12:18:573
187879971,1cyclictest7254-21ntp_states11:20:193
187879970,5cyclictest11301-21snmpd09:00:283
187879970,3cyclictest0-21swapper/308:45:173
187879970,2cyclictest0-21swapper/312:14:333
187879970,2cyclictest0-21swapper/307:45:103
187879970,1cyclictest0-21swapper/312:30:093
187809977,0cyclictest0-21swapper/210:34:552
187809976,1cyclictest61650irq/122-eno112:12:222
187809976,1cyclictest61650irq/122-eno112:00:182
187809976,1cyclictest61650irq/122-eno111:55:192
187809976,1cyclictest61650irq/122-eno111:30:162
187809976,1cyclictest61650irq/122-eno111:02:202
187809976,1cyclictest61650irq/122-eno110:45:122
187809976,1cyclictest61650irq/122-eno110:39:582
187809976,1cyclictest61650irq/122-eno109:35:122
187809976,1cyclictest61650irq/122-eno109:11:502
187809976,1cyclictest28101-21ntpq07:25:172
187809976,1cyclictest28-21ksoftirqd/207:45:002
187809976,1cyclictest11301-21snmpd12:32:342
187809975,1cyclictest61650irq/122-eno112:25:252
187809975,1cyclictest61650irq/122-eno111:45:172
187809975,1cyclictest61650irq/122-eno110:55:162
187809975,1cyclictest61650irq/122-eno110:40:162
187809975,1cyclictest27650-21ntpq09:30:152
187809975,1cyclictest11301-21snmpd07:21:102
187809970,6cyclictest0-21swapper/211:20:052
187809970,6cyclictest0-21swapper/211:10:312
187809970,5cyclictest26225-21perf09:30:012
187809970,2cyclictest8637-21munin-run07:55:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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