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2026-04-04 - 01:50
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackaslot8.osadl.org (updated Fri Apr 03, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135412291265,17sleep20-21swapper/207:08:362
136722274244,20sleep00-21swapper/007:09:590
136612269238,21sleep10-21swapper/107:09:521
134872261229,21sleep30-21swapper/307:07:533
206542980,0sleep30-21swapper/310:18:053
137792640,0sleep30-21swapper/311:50:383
223522610,0sleep10-21swapper/111:17:131
149382600,0sleep20-21swapper/212:30:172
67022540,0sleep00-21swapper/009:30:200
148182210,0sleep10-21swapper/111:31:581
248322200,0sleep20-21swapper/209:22:052
240512190,0sleep00-21swapper/010:59:060
169972170,0sleep00-21swapper/010:55:000
153672170,0sleep30-21swapper/311:32:243
296742140,2sleep122-21ksoftirqd/109:44:551
289922140,0sleep20-21swapper/207:40:142
215612130,0sleep10-21swapper/112:35:011
187342130,0sleep20-21swapper/209:38:062
208442110,0sleep00-21swapper/012:34:350
1378099119,1cyclictest28-21ksoftirqd/211:20:002
13780991110,1cyclictest28-21ksoftirqd/211:55:002
1378099109,1cyclictest28-21ksoftirqd/207:20:012
4567290,0sleep30-21swapper/312:24:463
26412290,0sleep30-21swapper/311:39:333
137809998,1cyclictest28-21ksoftirqd/212:40:012
137809996,2cyclictest28-21ksoftirqd/208:20:012
137739994,4cyclictest658-21snmpd10:39:580
137839986,1cyclictest111402sleep310:31:293
137809987,1cyclictest28-21ksoftirqd/210:20:012
137809982,1cyclictest141rcu_preempt12:10:112
137809980,1cyclictest28-21ksoftirqd/211:05:102
6282270,1sleep3341ksoftirqd/309:50:143
32159270,1sleep20-21swapper/210:25:122
25843270,0sleep30-21swapper/311:00:133
17582270,0sleep20-21swapper/211:34:072
137839975,2cyclictest34-21ksoftirqd/308:05:013
137839974,2cyclictest275-21systemd-journal11:21:443
137839973,3cyclictest658-21snmpd11:19:133
137839973,3cyclictest658-21snmpd11:11:593
137839973,3cyclictest275-21systemd-journal10:14:233
137839973,2cyclictest674-21lldpd09:11:493
137839973,1cyclictest0-21swapper/310:39:383
137809976,1cyclictest28-21ksoftirqd/211:50:002
137809976,1cyclictest28-21ksoftirqd/211:40:002
137809975,1cyclictest28-21ksoftirqd/211:55:022
137809972,5cyclictest141rcu_preempt11:22:282
137809971,4cyclictest141rcu_preempt10:52:442
137809971,4cyclictest141rcu_preempt10:30:322
137789975,1cyclictest22291-21irqstats07:25:131
137789973,3cyclictest4673-21sshd09:49:141
137789973,3cyclictest28095-21cron12:00:001
137789973,3cyclictest28033-21sshd07:38:521
137789972,4cyclictest658-21snmpd12:21:401
137789972,3cyclictest275-21systemd-journal10:01:521
137789972,3cyclictest21224-21awk09:40:001
137739973,3cyclictest658-21snmpd09:22:070
137739973,2cyclictest658-21snmpd09:44:330
137739970,6cyclictest32651-21cat10:05:220
137739970,1cyclictest26446-21ssh11:39:330
1343270,1sleep31350-21gltestperf10:45:153
1289270,0sleep20-21swapper/211:05:002
137839966,0cyclictest0-21swapper/312:33:163
137839966,0cyclictest0-21swapper/310:41:243
137839966,0cyclictest0-21swapper/309:15:383
137839963,2cyclictest8787-21ssh10:50:053
137839963,2cyclictest8484-21ssh12:26:253
137839963,2cyclictest663-21runrttasks10:00:473
137839963,2cyclictest658-21snmpd10:07:243
137839963,2cyclictest658-21snmpd09:40:033
137839963,2cyclictest658-21snmpd08:30:363
137839963,2cyclictest6100-21ssh10:29:013
137839963,2cyclictest501-21in:imuxsock08:15:013
137839963,2cyclictest3969-21systemctl11:25:183
137839963,2cyclictest34-21ksoftirqd/308:10:013
137839963,2cyclictest32351-21sshd11:42:443
137839963,2cyclictest1932-21systemctl07:50:173
137839963,2cyclictest18178-21idleruntime10:55:143
137839963,2cyclictest14914-21diskstats09:55:143
137839963,2cyclictest13390-21grep08:15:193
137839963,2cyclictest11177-21cron11:50:003
137839963,1cyclictest0-21swapper/309:32:333
137839962,3cyclictest658-21snmpd12:16:453
137839962,3cyclictest658-21snmpd09:36:363
137839962,3cyclictest658-21snmpd09:26:493
137839962,3cyclictest658-21snmpd08:20:123
137839962,3cyclictest658-21snmpd07:48:373
137839962,3cyclictest31724-21cat09:45:193
137839962,3cyclictest30871-21sendmail_mailst08:55:173
137839962,3cyclictest18243-21sshd08:29:073
137839962,3cyclictest1707-21wc09:05:013
137839962,1cyclictest141rcu_preempt12:35:183
137839962,1cyclictest0-21swapper/311:05:593
137839961,3cyclictest275-21systemd-journal10:20:013
137839960,6cyclictest0-21swapper/312:05:213
137839960,5cyclictest2576-21memory09:05:163
137839960,4cyclictest0-21swapper/311:55:193
137839960,2cyclictest30449-21timerwakeupswit12:00:193
137809966,0cyclictest281ksoftirqd/208:45:002
137809966,0cyclictest0-21swapper/210:43:452
137809966,0cyclictest0-21swapper/209:50:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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