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2026-03-24 - 21:19
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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 Tue Mar 24, 2026 12:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1580199258,16cyclictest18321-21perf12:00:000
1580299230,19cyclictest0-21swapper/108:34:531
1580199220,4cyclictest0-21swapper/008:26:280
1580399215,15cyclictest0-21swapper/209:55:332
1580399210,18cyclictest0-21swapper/208:08:442
1580199210,3cyclictest0-21swapper/009:21:060
1580199210,3cyclictest0-21swapper/009:21:060
1580199210,19cyclictest0-21swapper/011:20:010
15803992018,1cyclictest28-21ksoftirqd/207:20:442
1580399201,18cyclictest3986-21H222:10:212
1580399201,18cyclictest3986-21H222:10:212
1580399201,17cyclictest30858-21fschecks_count07:35:142
15802992013,3cyclictest0-21swapper/112:06:201
1580199203,16cyclictest0-21swapper/010:05:180
1580199200,3cyclictest1829-21systemd-journal10:38:590
1580399192,1cyclictest0-21swapper/211:49:562
1580399192,16cyclictest11953-21smtpd07:58:122
1580399191,2cyclictest3851-21latency_hist07:45:012
1580399190,18cyclictest15765-21nfsd410:55:192
1580299190,16cyclictest12283-21cat08:00:011
1580199192,1cyclictest0-21swapper/010:30:090
1580199192,16cyclictest10782-21cstates11:45:120
1580199190,5cyclictest0-21swapper/008:10:570
1580199190,5cyclictest0-21swapper/008:08:580
1580199190,3cyclictest0-21swapper/012:16:370
1580199190,2cyclictest22030-21latency_hist09:15:010
1580199190,1cyclictest0-21swapper/007:17:240
1580199190,16cyclictest0-21swapper/008:47:090
1580399182,2cyclictest21847-21chrt09:12:472
1580399182,15cyclictest20239-21chrt08:11:522
15803991817,1cyclictest28-21ksoftirqd/208:58:542
1580399180,2cyclictest17983-21munin-run10:05:002
1580399180,2cyclictest1079-21cups-browsed10:35:212
1580399180,17cyclictest9424-21nfsd408:50:182
1580299182,15cyclictest16699-21smartctl08:05:191
15802991815,1cyclictest0-21swapper/111:54:361
15802991814,3cyclictest3053-21systemd-logind11:48:521
15802991814,3cyclictest16914-21latency_hist11:00:001
1580299180,17cyclictest843-21systemd-network07:28:471
1580299180,17cyclictest3351-21lxd12:22:431
1580299180,17cyclictest3351-21lxd12:22:431
1580199183,1cyclictest9-21ksoftirqd/009:41:540
1580199182,15cyclictest24491-21mii-tool08:20:160
15801991816,1cyclictest0-21swapper/007:10:130
15801991816,1cyclictest0-21swapper/007:10:130
15801991814,3cyclictest1829-21systemd-journal12:01:500
1580199181,2cyclictest30896-21grep12:20:150
1580199181,2cyclictest30896-21grep12:20:150
1580199181,16cyclictest1808-21expr11:30:150
1580199181,16cyclictest16793-21snapd10:42:480
1580199180,17cyclictest24072-21cat12:10:010
1580199180,17cyclictest1821-21cron08:39:000
15803991715,1cyclictest312742sleep208:33:142
15803991715,1cyclictest28-21ksoftirqd/210:15:222
15803991715,1cyclictest0-21swapper/211:30:142
15803991715,1cyclictest0-21swapper/210:45:162
15803991715,1cyclictest0-21swapper/210:40:162
15803991715,1cyclictest0-21swapper/208:40:142
15803991715,1cyclictest0-21swapper/208:20:012
15803991715,1cyclictest0-21swapper/207:25:182
15803991714,2cyclictest9171-21ntp_offset11:40:152
15803991714,2cyclictest4317-21apache_volume09:40:132
15803991714,2cyclictest3414-21master12:27:222
15803991714,2cyclictest32523-21processes11:25:212
15803991714,2cyclictest27011-21processes11:15:202
15803991714,2cyclictest2604-21pzem_current09:35:192
15803991714,2cyclictest24018-21nfsd411:10:192
15803991714,2cyclictest17178-21acpi11:00:112
15803991714,2cyclictest15773-21chrt09:02:142
15803991714,2cyclictest15433-21chrt11:53:452
15803991714,2cyclictest10003-21dpkg09:50:012
15803991714,1cyclictest0-21swapper/211:55:132
1580399170,2cyclictest29476-21python312:20:002
1580399170,16cyclictest8848-21ls07:50:222
1580399170,16cyclictest6807-21smtpd12:35:132
1580399170,16cyclictest6036-21needreboot11:35:192
1580399170,16cyclictest31747-21pzem_current12:20:202
1580399170,16cyclictest31747-21pzem_current12:20:202
1580399170,16cyclictest30632-21/usr/sbin/munin09:30:112
1580399170,16cyclictest30069-21chrt09:28:002
1580399170,16cyclictest29680-21ntp_offset11:20:182
1580399170,16cyclictest2872-21systemd-logind12:06:522
1580399170,16cyclictest25889-21pzem_power12:10:202
1580399170,16cyclictest22454-21apache_volume09:15:122
1580399170,16cyclictest16766-21snapd10:50:372
1580399170,16cyclictest16716-21fschecks_count07:10:142
1580399170,16cyclictest16716-21fschecks_count07:10:132
1580399170,16cyclictest1079-21cups-browsed10:25:202
1580399170,16cyclictest0-21swapper/208:45:152
15802991715,1cyclictest20400-21sendmail_mailqu07:15:201
15802991714,2cyclictest9672-21dpkg09:50:011
15802991714,2cyclictest9672-21dpkg09:50:011
15802991714,2cyclictest7592-21latency_hist11:40:011
15802991714,2cyclictest625-21nfsd408:35:191
15802991714,2cyclictest29173-21chrt12:17:141
15802991714,2cyclictest25214-21sendmail_mailqu08:20:211
15802991714,2cyclictest23894-21munin-plugin-st10:15:001
15802991714,2cyclictest17239-21nfsd411:55:171
15802991714,2cyclictest1522-21lxd11:28:431
15802991713,3cyclictest5942-21wc10:40:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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