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2026-08-13 - 19:29
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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 Thu Aug 13, 2026 12:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2936324000,7sleep30-21swapper/307:05:243
299842207152,21sleep10-21swapper/107:09:251
299702200160,26sleep20-21swapper/207:09:142
297522198160,24sleep00-21swapper/007:06:220
317342800,0sleep10-21swapper/108:20:011
292432600,1sleep3341rcuc/310:03:283
90272200,1sleep29021-21gltestperf07:30:162
30132991414,0cyclictest0-21swapper/210:00:172
30132991311,1cyclictest28-21ksoftirqd/207:25:012
30124991313,0cyclictest0-21swapper/109:28:141
3011799130,12cyclictest0-21swapper/008:05:140
30132991111,0cyclictest20075-21ssh11:21:152
3011799119,1cyclictest9-21ksoftirqd/007:20:010
3011799113,4cyclictest26246-21perf09:15:010
3011799113,4cyclictest26246-21perf09:15:010
3011799113,4cyclictest11596-21perf10:24:590
284972110,0sleep30-21swapper/309:15:573
10912110,0sleep30-21swapper/310:10:123
3014099109,1cyclictest32010-21perf11:40:003
3014099107,1cyclictest35-21ksoftirqd/310:50:013
3014099100,6cyclictest347-21diskstats11:40:153
30132991010,0cyclictest0-21swapper/207:50:222
3011799108,1cyclictest9-21ksoftirqd/009:05:000
3011799102,4cyclictest6019-21cat12:35:000
210802100,0sleep00-21swapper/011:24:320
301409996,2cyclictest11301-21snmpd11:22:193
301329998,1cyclictest0-21swapper/209:50:172
301249990,4cyclictest0-21swapper/110:30:121
301249990,3cyclictest0-21swapper/107:40:121
301179990,8cyclictest30552-21kworker/u8:212:21:540
301179990,4cyclictest0-21swapper/010:10:130
301409986,1cyclictest16844-21cat08:55:153
301409986,1cyclictest11301-21snmpd12:30:393
301409986,1cyclictest11301-21snmpd10:50:123
301409986,1cyclictest11301-21snmpd09:01:543
301409986,1cyclictest11301-21snmpd08:48:003
301409984,3cyclictest35-21ksoftirqd/311:01:113
301409982,3cyclictest113672sleep309:37:253
301409980,6cyclictest7720-21sh10:19:443
301409980,3cyclictest11301-21snmpd12:16:493
301329986,1cyclictest61650irq/122-eno112:15:132
301329986,1cyclictest61650irq/122-eno111:10:212
301329986,1cyclictest61650irq/122-eno109:44:072
301329986,1cyclictest61650irq/122-eno109:15:202
301329986,1cyclictest28-21ksoftirqd/211:07:552
301329986,1cyclictest11301-21snmpd11:31:342
301329986,1cyclictest11301-21snmpd09:45:022
301329986,0cyclictest61650irq/122-eno109:22:032
301329984,3cyclictest542-21irqstats07:15:012
301329982,1cyclictest548-21systemd-logind11:15:182
301249984,2cyclictest0-21swapper/111:52:071
301179987,1cyclictest9-21ksoftirqd/012:00:000
301179986,1cyclictest9-21ksoftirqd/007:59:420
301179986,1cyclictest15717-21perf09:45:000
301179986,1cyclictest11301-21snmpd07:12:520
301179986,1cyclictest11301-21snmpd07:12:520
301179980,7cyclictest17735-21munin-run11:20:000
8824270,0sleep30-21swapper/310:20:153
301409976,1cyclictest35-21ksoftirqd/307:25:013
301409976,1cyclictest11301-21snmpd12:24:493
301409976,1cyclictest11301-21snmpd10:05:323
301409976,1cyclictest11301-21snmpd09:53:003
301409976,1cyclictest11301-21snmpd07:46:473
301409976,1cyclictest1002-21nscd10:44:023
301409975,1cyclictest11301-21snmpd12:36:403
301409975,1cyclictest11301-21snmpd12:07:143
301409975,1cyclictest11301-21snmpd08:35:563
301409975,1cyclictest11301-21snmpd08:27:273
301409975,1cyclictest11301-21snmpd07:54:403
301409975,1cyclictest11301-21snmpd07:42:083
301409975,0cyclictest13650irq/124-ahci[0011:49:563
301409973,2cyclictest22830-21diskmemload12:11:393
301329976,1cyclictest61650irq/122-eno112:12:062
301329976,1cyclictest61650irq/122-eno112:08:032
301329976,1cyclictest61650irq/122-eno111:25:132
301329976,1cyclictest61650irq/122-eno110:37:152
301329976,1cyclictest61650irq/122-eno110:19:462
301329976,1cyclictest61650irq/122-eno109:38:442
301329976,1cyclictest61650irq/122-eno108:40:102
301329976,1cyclictest61650irq/122-eno108:35:202
301329976,1cyclictest61650irq/122-eno107:25:192
301329976,1cyclictest11301-21snmpd11:02:372
301329975,2cyclictest61650irq/122-eno109:30:002
301329975,1cyclictest61650irq/122-eno112:00:122
301329975,1cyclictest61650irq/122-eno110:25:212
301329975,1cyclictest61650irq/122-eno108:00:122
301329975,1cyclictest30774-21ssh11:36:082
301329975,1cyclictest11301-21snmpd08:20:512
301329974,1cyclictest28-21ksoftirqd/207:15:012
301329974,1cyclictest28-21ksoftirqd/207:15:002
301329973,0cyclictest0-21swapper/209:30:182
301329971,6cyclictest0-21swapper/208:30:292
301249971,6cyclictest0-21swapper/109:03:241
301249971,3cyclictest0-21swapper/112:10:151
301249971,3cyclictest0-21swapper/110:45:091
301249970,6cyclictest0-21swapper/109:10:151
301249970,6cyclictest0-21swapper/109:10:151
301249970,4cyclictest0-21swapper/110:00:371
301249970,4cyclictest0-21swapper/109:30:111
301249970,4cyclictest0-21swapper/109:21:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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