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2026-04-25 - 01:25
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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 Sat Apr 25, 2026 00:45:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204492208153,42sleep10-21swapper/119:09:181
203662208141,22sleep00-21swapper/019:08:110
181572208156,26sleep30-21swapper/319:05:023
202042197158,25sleep20-21swapper/219:06:042
155282210,0sleep00-21swapper/021:53:350
326572160,1sleep1111rcu_preempt19:30:191
2060399150,1cyclictest0-21swapper/220:40:132
2058899145,4cyclictest10958-21latency_hist21:05:010
77032130,0sleep10-21swapper/100:34:571
250562130,0sleep10-21swapper/120:25:131
2061099130,4cyclictest0-21swapper/320:45:133
20603991311,1cyclictest28-21ksoftirqd/219:20:012
20603991311,1cyclictest28-21ksoftirqd/219:20:012
20610991210,1cyclictest35-21ksoftirqd/320:05:003
2060399129,1cyclictest28-21ksoftirqd/222:00:002
20603991211,1cyclictest28-21ksoftirqd/220:10:012
2060399120,12cyclictest0-21swapper/223:20:262
2058899122,5cyclictest15939-21latency_hist23:20:000
2060399110,7cyclictest22967-21munin-node00:21:452
2060399110,11cyclictest0-21swapper/219:53:392
2060399110,0cyclictest0-21swapper/221:24:232
2058899110,9cyclictest17998-21snmpd00:18:000
209632100,0sleep20-21swapper/200:09:162
2060399109,1cyclictest28-21ksoftirqd/223:05:012
2060399109,1cyclictest28-21ksoftirqd/219:30:012
2058899102,4cyclictest19891-21cat22:00:010
2058899100,8cyclictest22967-21munin-node23:21:330
2058899100,5cyclictest26819-21perf20:30:010
15322100,2sleep20-21swapper/223:42:412
206039998,1cyclictest28-21ksoftirqd/220:35:002
206039997,1cyclictest28-21ksoftirqd/221:35:042
206109986,1cyclictest17998-21snmpd22:32:463
206109980,6cyclictest13287-21diskmemload00:20:143
206039987,1cyclictest28-21ksoftirqd/223:50:122
206039986,1cyclictest61650irq/122-eno123:30:012
206039986,1cyclictest61650irq/122-eno122:15:012
206039986,1cyclictest61650irq/122-eno121:29:372
206039986,1cyclictest61650irq/122-eno121:15:182
206039986,1cyclictest61650irq/122-eno121:14:402
206039986,1cyclictest28-21ksoftirqd/220:39:592
206039986,1cyclictest28-21ksoftirqd/219:40:132
206039986,1cyclictest17998-21snmpd00:37:162
206039986,1cyclictest17998-21snmpd00:29:342
205959980,4cyclictest0-21swapper/121:20:021
205889986,1cyclictest9-21ksoftirqd/021:16:300
205889986,1cyclictest20050-21ssh22:41:090
205889986,1cyclictest17998-21snmpd19:29:380
205889986,1cyclictest17998-21snmpd19:17:240
205889986,1cyclictest17998-21snmpd19:17:240
205889981,6cyclictest31461-21ssh22:55:190
205889981,5cyclictest8610-21/usr/sbin/munin23:10:130
205889980,7cyclictest24267-21diskstats23:30:140
206109976,1cyclictest17998-21snmpd22:09:463
206109976,1cyclictest17998-21snmpd20:57:523
206109976,1cyclictest17998-21snmpd00:00:333
206109975,1cyclictest23889-21ssh00:11:553
206109975,1cyclictest17998-21snmpd22:46:373
206109975,1cyclictest17998-21snmpd20:32:443
206109975,1cyclictest17998-21snmpd19:22:123
206109972,2cyclictest31105-21mailstats22:55:183
206109972,2cyclictest23740-21apt-get23:30:113
206109972,2cyclictest0-21swapper/321:50:113
206109970,6cyclictest7548-21ssh23:07:523
206109970,4cyclictest0-21swapper/321:57:483
206039977,0cyclictest61650irq/122-eno122:07:522
206039977,0cyclictest0-21swapper/221:50:282
206039976,1cyclictest61650irq/122-eno122:48:202
206039976,1cyclictest61650irq/122-eno122:22:212
206039976,1cyclictest61650irq/122-eno122:18:562
206039976,1cyclictest61650irq/122-eno121:45:042
206039976,0cyclictest61650irq/122-eno123:15:132
206039975,1cyclictest9800-21ntpq23:10:142
206039975,1cyclictest61650irq/122-eno122:25:192
206039975,1cyclictest61650irq/122-eno119:10:122
206039975,1cyclictest28-21ksoftirqd/200:30:142
206039975,1cyclictest17998-21snmpd23:45:272
206039975,1cyclictest17998-21snmpd23:35:172
206039975,1cyclictest17998-21snmpd22:02:032
206039975,1cyclictest17998-21snmpd21:30:052
206039975,1cyclictest13271-21sh21:10:012
206039975,1cyclictest12517-21ssh22:31:142
206039972,4cyclictest5568-21cut21:40:152
206039970,5cyclictest0-21swapper/222:35:152
205959971,6cyclictest0-21swapper/121:36:171
205959970,6cyclictest0-21swapper/123:25:161
205959970,6cyclictest0-21swapper/123:03:491
205959970,4cyclictest0-21swapper/122:49:341
205959970,4cyclictest0-21swapper/122:40:131
205959970,3cyclictest0-21swapper/123:53:051
205959970,3cyclictest0-21swapper/122:32:071
205959970,1cyclictest0-21swapper/119:19:351
205959970,1cyclictest0-21swapper/119:19:351
205889976,1cyclictest9-21ksoftirqd/022:05:000
205889976,1cyclictest9-21ksoftirqd/019:10:100
205889976,1cyclictest9-21ksoftirqd/000:00:350
205889976,1cyclictest17998-21snmpd23:09:580
205889975,1cyclictest9-21ksoftirqd/000:11:570
205889975,1cyclictest6192-21ntp_states21:40:180
205889975,1cyclictest17998-21snmpd21:30:020
205889975,1cyclictest17998-21snmpd20:49:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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