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2026-08-29 - 07:33
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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 100 highest latencies:
System rack1slot1.osadl.org (updated Sat Aug 29, 2026 00:45:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
309712218162,44sleep00-21swapper/019:07:450
310442201161,26sleep10-21swapper/119:08:431
308592201163,25sleep20-21swapper/219:06:182
308052198159,25sleep30-21swapper/319:05:353
49892460,0sleep00-21swapper/023:45:160
31243991211,1cyclictest31110-21latency_hist21:20:003
3122599123,5cyclictest21110-21latency_hist00:10:010
3123799119,1cyclictest28-21ksoftirqd/219:30:002
3123799119,1cyclictest28-21ksoftirqd/219:30:002
3123799110,8cyclictest11301-21snmpd00:07:592
3122599119,1cyclictest9-21ksoftirqd/023:35:000
3122599114,6cyclictest21601-21grep21:05:000
3124399109,1cyclictest35-21ksoftirqd/320:40:003
3122599109,1cyclictest9-21ksoftirqd/023:05:140
3122599109,1cyclictest9-21ksoftirqd/023:05:000
3122599109,1cyclictest9-21ksoftirqd/022:12:080
267072100,0sleep20-21swapper/221:59:012
312439990,5cyclictest0-21swapper/323:02:503
312439990,5cyclictest0-21swapper/322:55:123
312439990,4cyclictest23793-21apt-get21:55:113
312439990,3cyclictest0-21swapper/323:50:113
312379997,1cyclictest28-21ksoftirqd/223:45:082
312379990,7cyclictest0-21swapper/221:40:162
312379990,6cyclictest12200-21/usr/sbin/munin23:55:192
312379990,4cyclictest19546-21rm22:35:102
312379990,4cyclictest0-21swapper/219:40:112
312379990,1cyclictest0-21swapper/200:15:182
312259995,0cyclictest0-21swapper/022:35:200
312439987,1cyclictest35-21ksoftirqd/323:46:353
312439986,1cyclictest11301-21snmpd21:40:083
312439986,1cyclictest11301-21snmpd20:28:043
312439986,1cyclictest11301-21snmpd20:28:033
312439986,1cyclictest11301-21snmpd19:55:203
312439980,5cyclictest14206-21grep19:40:123
312439980,5cyclictest0-21swapper/322:10:293
312379988,0cyclictest28-21ksoftirqd/222:05:372
312379987,1cyclictest28-21ksoftirqd/220:15:112
312379986,1cyclictest61650irq/122-eno123:30:172
312379986,1cyclictest61650irq/122-eno123:15:202
312379986,1cyclictest61650irq/122-eno122:29:302
312379986,1cyclictest61650irq/122-eno121:46:332
312379986,1cyclictest61650irq/122-eno100:15:002
312379986,1cyclictest28-21ksoftirqd/223:50:502
312379986,1cyclictest11301-21snmpd21:51:202
312379986,1cyclictest11301-21snmpd19:48:502
312379984,3cyclictest28541-21apt-get00:20:102
312379982,5cyclictest1373-21sed19:15:002
312379981,5cyclictest23666-21ssh23:25:192
312379981,1cyclictest0-21swapper/222:10:142
312259988,0cyclictest9-21ksoftirqd/022:30:010
312259987,1cyclictest9-21ksoftirqd/023:35:190
312259987,1cyclictest11301-21snmpd21:29:200
312259986,1cyclictest9-21ksoftirqd/023:50:160
312259986,1cyclictest9-21ksoftirqd/022:50:150
312259986,1cyclictest25763-1kworker/u9:222:45:000
312259986,1cyclictest20300-21/usr/sbin/munin21:50:130
312259986,1cyclictest11301-21snmpd21:16:010
312259981,6cyclictest3514-21expr00:30:120
312259981,6cyclictest30570-21ssh00:21:080
312259981,5cyclictest561-21nscd20:25:180
312259981,5cyclictest561-21nscd20:25:180
312259981,4cyclictest20782-21latency_hist19:55:000
312259980,5cyclictest16160-21kworker/u8:223:40:070
312259980,4cyclictest8920-21latency_hist19:30:000
312259980,4cyclictest8920-21latency_hist19:30:000
312259980,1cyclictest24129-21diskmemload21:30:530
6050275,1sleep28760-21kworker/2:000:34:092
312439976,1cyclictest35-21ksoftirqd/322:40:003
312439976,1cyclictest35-21ksoftirqd/320:25:003
312439976,1cyclictest35-21ksoftirqd/319:48:273
312439976,1cyclictest11301-21snmpd23:41:293
312439976,1cyclictest11301-21snmpd23:09:253
312439975,1cyclictest11301-21snmpd19:21:493
312439975,1cyclictest11301-21snmpd19:13:583
312439972,3cyclictest10854-21apt-get23:55:123
312439970,5cyclictest0-21swapper/321:13:083
312439970,4cyclictest0-21swapper/323:25:113
312439970,4cyclictest0-21swapper/320:45:093
312439970,4cyclictest0-21swapper/300:35:103
312439970,4cyclictest0-21swapper/300:15:433
312439970,3cyclictest0-21swapper/323:36:213
312439970,3cyclictest0-21swapper/322:45:133
312439970,3cyclictest0-21swapper/300:10:163
312439970,3cyclictest0-21swapper/300:01:243
312439970,1cyclictest30521-21cstates22:50:143
312379976,1cyclictest61650irq/122-eno123:44:192
312379976,1cyclictest61650irq/122-eno123:10:022
312379976,1cyclictest61650irq/122-eno123:05:212
312379976,1cyclictest61650irq/122-eno122:30:122
312379976,1cyclictest61650irq/122-eno122:15:112
312379976,0cyclictest61650irq/122-eno122:03:232
312379975,1cyclictest61650irq/122-eno123:00:232
312379975,1cyclictest61650irq/122-eno121:10:122
312379975,1cyclictest11301-21snmpd22:55:252
312379975,1cyclictest11301-21snmpd22:48:582
312379975,1cyclictest11301-21snmpd20:51:462
312379975,1cyclictest11301-21snmpd20:33:452
312379975,1cyclictest11301-21snmpd20:10:142
312379971,3cyclictest19453-21apt-get21:00:102
312379970,6cyclictest0-21swapper/200:00:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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