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2026-08-31 - 11:25
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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 Mon Aug 31, 2026 00:45:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
79072232156,60sleep00-21swapper/019:06:320
79302208176,20sleep30-21swapper/319:06:513
79032198160,25sleep10-21swapper/119:06:301
78602197158,26sleep20-21swapper/219:05:582
301662750,2sleep121-21ksoftirqd/122:35:191
91062160,0sleep20-21swapper/222:51:032
8244991413,1cyclictest9-21ksoftirqd/022:45:190
824499140,14cyclictest0-21swapper/021:56:130
825699130,12cyclictest0-21swapper/223:41:202
8262991211,1cyclictest35-21ksoftirqd/320:20:003
825699120,11cyclictest0-21swapper/222:10:152
824499123,4cyclictest22458-21latency_hist21:39:590
146052120,0sleep31101-21diskmemload00:31:103
825699119,1cyclictest28-21ksoftirqd/219:55:002
825599110,11cyclictest0-21swapper/123:30:221
824499118,1cyclictest240-21systemd-journal23:34:550
826299109,1cyclictest1101-21diskmemload23:24:333
8262991010,0cyclictest0-21swapper/320:44:313
826299100,6cyclictest1101-21diskmemload23:05:113
825699108,1cyclictest28-21ksoftirqd/220:05:002
825699104,3cyclictest240-21systemd-journal23:30:012
824499108,1cyclictest9-21ksoftirqd/022:05:010
824499108,1cyclictest9-21ksoftirqd/021:00:000
824499104,5cyclictest22543-1kworker/u9:100:05:210
82629998,1cyclictest35-21ksoftirqd/321:40:133
82629993,5cyclictest35-21ksoftirqd/321:47:243
82629991,7cyclictest28573-21kworker/u8:022:41:033
82569990,9cyclictest0-21swapper/223:17:532
82569990,9cyclictest0-21swapper/200:32:082
82569990,7cyclictest26119-21taskset21:45:112
82449998,1cyclictest9-21ksoftirqd/021:25:010
82449998,1cyclictest9-21ksoftirqd/021:25:000
82449998,1cyclictest9-21ksoftirqd/020:20:000
82449997,1cyclictest9-21ksoftirqd/022:30:000
82449997,1cyclictest9-21ksoftirqd/000:00:130
82449995,1cyclictest294-21systemd-udevd22:51:080
82629988,0cyclictest35-21ksoftirqd/323:49:563
82629986,1cyclictest6480-21cat00:20:163
82629986,1cyclictest11301-21snmpd23:38:173
82629986,1cyclictest11301-21snmpd22:53:043
82629986,1cyclictest11301-21snmpd20:53:363
82629986,1cyclictest11301-21snmpd20:35:383
82629986,1cyclictest11301-21snmpd19:36:343
82629982,2cyclictest31413-21apt-get21:05:123
82629981,6cyclictest1101-21diskmemload22:09:293
82569986,1cyclictest61650irq/122-eno121:15:152
82569986,1cyclictest28-21ksoftirqd/219:40:012
82569986,1cyclictest11301-21snmpd23:50:122
82569986,1cyclictest11301-21snmpd20:35:332
82569984,2cyclictest240-21systemd-journal22:00:012
82569983,3cyclictest29289-21unixbench_singl00:05:232
82569983,2cyclictest0-21swapper/222:39:102
82569981,6cyclictest0-21swapper/221:24:302
82569981,6cyclictest0-21swapper/221:24:292
82569980,7cyclictest0-21swapper/200:00:502
82559980,4cyclictest0-21swapper/122:25:111
82559980,4cyclictest0-21swapper/121:50:221
82449988,0cyclictest9-21ksoftirqd/000:20:200
82449988,0cyclictest9-21ksoftirqd/000:15:010
82449987,1cyclictest9-21ksoftirqd/021:25:160
82449987,1cyclictest9-21ksoftirqd/000:30:140
82449986,1cyclictest9-21ksoftirqd/023:45:010
82449986,1cyclictest9-21ksoftirqd/022:20:140
82449986,1cyclictest9-21ksoftirqd/019:40:160
82449986,1cyclictest11301-21snmpd19:39:590
82449985,1cyclictest294-21systemd-udevd23:47:070
82449985,0cyclictest1101-21diskmemload00:15:350
82449984,3cyclictest9-21ksoftirqd/022:30:240
82449981,6cyclictest30074-21ssh22:35:180
82449980,7cyclictest19806-21ssh23:05:590
82449980,7cyclictest10435-21ssh22:08:290
82449980,4cyclictest0-21swapper/000:25:500
9220270,0sleep20-21swapper/223:38:502
82629976,1cyclictest35-21ksoftirqd/321:35:003
82629976,1cyclictest0-21swapper/300:38:283
82629975,1cyclictest19126-21ssh21:35:113
82629975,1cyclictest11301-21snmpd23:51:003
82629975,1cyclictest11301-21snmpd23:14:343
82629975,1cyclictest11301-21snmpd22:30:373
82629975,1cyclictest11301-21snmpd22:14:233
82629975,1cyclictest11301-21snmpd21:03:243
82629975,1cyclictest11301-21snmpd20:21:413
82629975,1cyclictest11301-21snmpd19:23:333
82629975,1cyclictest11301-21snmpd19:17:403
82629975,1cyclictest1101-21diskmemload23:04:343
82629975,0cyclictest1101-21diskmemload00:05:063
82629972,1cyclictest0-21swapper/322:35:183
82629971,4cyclictest32259-21chrt21:53:093
82629971,3cyclictest19226-21cstates19:30:143
82629971,3cyclictest19226-21cstates19:30:133
82629971,2cyclictest0-21swapper/322:57:263
82629970,4cyclictest0-21swapper/322:48:213
82569976,1cyclictest61650irq/122-eno123:57:352
82569976,1cyclictest61650irq/122-eno123:00:012
82569976,1cyclictest61650irq/122-eno122:55:142
82569976,1cyclictest61650irq/122-eno122:42:152
82569976,1cyclictest61650irq/122-eno120:30:202
82569976,1cyclictest61650irq/122-eno100:38:112
82569976,1cyclictest61650irq/122-eno100:15:152
82569976,1cyclictest16564-21ssh23:49:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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