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2026-08-24 - 10:50
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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
Characteristics of the 100 highest latencies:
System rackdslot0.osadl.org (updated Mon Aug 24, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14653993517,17cyclictest0-21swapper/222:10:122
14649993424,10cyclictest0-21swapper/119:19:241
14649993122,9cyclictest21-21ksoftirqd/122:36:341
1464999230,5cyclictest0-21swapper/120:15:481
1464899230,0cyclictest0-21swapper/020:02:110
1464899223,18cyclictest0-21swapper/022:46:200
14648992113,4cyclictest0-21swapper/022:17:370
14653992017,2cyclictest7837-21expr19:50:212
14653992011,5cyclictest0-21swapper/222:20:142
14653992011,5cyclictest0-21swapper/222:20:142
1465399194,1cyclictest0-21swapper/200:10:142
1465399192,16cyclictest0-21swapper/222:25:162
14653991913,5cyclictest0-21swapper/221:50:222
14653991913,5cyclictest0-21swapper/221:27:412
1465399190,5cyclictest0-21swapper/220:52:012
1465399190,18cyclictest0-21swapper/220:20:142
1465399190,18cyclictest0-21swapper/220:15:152
1464999192,2cyclictest3987-21H222:10:211
14649991916,2cyclictest15964-21chrt23:55:051
1464999190,17cyclictest14817-21turbostat.cron22:00:001
14648991916,2cyclictest10727-21cut20:55:010
14648991913,1cyclictest111rcu_preempt23:53:560
1464899190,18cyclictest9-21ksoftirqd/019:57:050
1465399182,15cyclictest215782sleep221:14:482
14653991815,2cyclictest9861-21apt-config23:45:002
14653991815,2cyclictest20012-21chrt22:06:462
14653991814,3cyclictest20820-21/usr/sbin/munin19:20:202
1465399180,17cyclictest0-21swapper/220:03:162
1465399180,16cyclictest23333-21nfsd421:15:182
1464999183,1cyclictest21-21ksoftirqd/119:20:211
14649991816,1cyclictest21-21ksoftirqd/122:10:231
14649991816,1cyclictest211ksoftirqd/120:05:191
14649991814,3cyclictest3979-21H222:10:211
14649991814,3cyclictest0-21swapper/122:04:251
14649991813,3cyclictest3987-21H222:10:211
14649991813,1cyclictest111rcu_preempt19:31:561
1464999181,16cyclictest20138-21taskset22:08:211
1464999180,9cyclictest0-21swapper/123:47:451
1464999180,3cyclictest3944-21java21:30:011
1464999180,3cyclictest3944-21java21:30:011
1464999180,17cyclictest843-21systemd-network22:29:301
1464899182,15cyclictest3979-21H222:10:210
14648991816,1cyclictest5496-21mailstats21:40:200
14648991816,1cyclictest455-21plymouthd23:31:390
1464899180,17cyclictest870-21systemd-logind19:31:520
1464899180,16cyclictest3940-21java21:30:010
1464899180,16cyclictest3940-21java21:30:010
1464899180,15cyclictest11166-21cut20:55:130
1465399172,9cyclictest29645-21gpgv00:20:002
14653991714,2cyclictest843-21systemd-network20:28:312
14653991714,2cyclictest4935-21ps19:45:202
14653991714,2cyclictest3772-21date21:40:022
14653991714,2cyclictest28823-21sed19:35:012
14653991714,2cyclictest16721-21sed19:10:202
14653991714,2cyclictest1100-21snmpd23:45:142
14653991714,2cyclictest10068-21missed_timers22:45:182
1465399171,15cyclictest0-21swapper/220:30:212
1465399170,2cyclictest3989-21H222:10:212
1465399170,2cyclictest2100-21postgres22:34:072
1465399170,1cyclictest0-21swapper/219:28:322
1465399170,1cyclictest0-21swapper/200:05:532
1465399170,16cyclictest7441-21python320:50:012
1465399170,16cyclictest7003-21runrttasks00:35:142
1465399170,16cyclictest6661-21expr22:40:142
1465399170,16cyclictest4625-21cron20:45:012
1465399170,16cyclictest3839-21cpuspeed_turbos00:30:152
1465399170,16cyclictest3707-21master22:00:152
1465399170,16cyclictest3274-21threads23:30:232
1465399170,16cyclictest30587-21grep19:35:182
1465399170,16cyclictest30251-21gpg-connect-age00:20:012
1465399170,16cyclictest30206-21/usr/sbin/munin21:30:162
1465399170,16cyclictest30206-21/usr/sbin/munin21:30:162
1465399170,16cyclictest2755-21apt-config19:45:012
1465399170,16cyclictest25502-21/usr/sbin/munin23:15:132
1465399170,16cyclictest24767-21netstat22:15:182
1465399170,16cyclictest22130-21ionclean23:08:592
1465399170,16cyclictest2039-21nfsd400:25:202
1465399170,16cyclictest20388-21cron19:20:002
1465399170,16cyclictest2007-21systemd-journal21:57:382
1465399170,16cyclictest17427-21grep23:00:142
1465399170,16cyclictest17285-21expr23:55:202
1465399170,16cyclictest17112-21fschecks_time21:05:142
1465399170,16cyclictest15691-21anacron21:01:092
1465399170,16cyclictest14499-21snapd22:35:182
1465399170,16cyclictest13299-21tr22:50:182
1465399170,16cyclictest12134-21nfsd420:55:202
1464999172,14cyclictest0-21swapper/122:50:081
14649991716,1cyclictest21-21ksoftirqd/123:36:581
14649991716,1cyclictest21-21ksoftirqd/100:25:051
14649991715,1cyclictest3979-21H222:10:211
14649991714,2cyclictest4490-21latency19:45:181
14649991714,2cyclictest29794-21pzem_current23:20:201
14649991714,2cyclictest28736-21nfsd421:25:181
14649991714,2cyclictest27866-21sendmail_mailqu22:20:211
14649991714,2cyclictest27866-21sendmail_mailqu22:20:211
14649991714,2cyclictest23173-21expr23:10:131
14649991714,2cyclictest19458-21grep21:10:131
14649991714,2cyclictest11743-21grep20:00:131
14649991714,2cyclictest1100-21snmpd22:45:161
14649991714,2cyclictest1100-21snmpd00:19:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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