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2026-09-17 - 02:17
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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 Wed Sep 16, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2787699241,5cyclictest0-21swapper/110:15:011
2788199234,18cyclictest28-21ksoftirqd/208:34:432
27876992314,8cyclictest23141-21ntpq07:55:181
2787699230,2cyclictest30613-21fschecks_count09:05:131
2787699230,22cyclictest835-21perf07:20:011
2787699230,22cyclictest17561-21awk07:45:171
2787699230,21cyclictest2956-21latency_hist11:10:001
2787699230,1cyclictest0-21swapper/112:25:141
27876992213,8cyclictest10229-21perf10:25:001
2787699221,20cyclictest18733-21nfsd409:40:191
2787699221,20cyclictest0-21swapper/111:31:271
2787699220,7cyclictest111562chrt11:22:431
2787699220,21cyclictest6900-21mv08:25:011
2787699220,21cyclictest5301-21interrupts07:25:181
2787699220,21cyclictest3450-21gsd-color10:15:151
2787699220,21cyclictest29502-21ls11:00:001
2787699220,21cyclictest28908-21expr10:00:131
2787699220,21cyclictest28221-21latency_hist10:00:001
2787699220,21cyclictest27670-21cat08:05:151
2787699220,21cyclictest26409-21if_eno111:50:141
2787699220,21cyclictest24421-21/usr/sbin/munin10:50:191
2787699220,21cyclictest20736-21cat09:45:151
2787699220,21cyclictest19126-21sed11:35:241
2787699220,21cyclictest18977-21cut08:45:011
2787699220,21cyclictest1648-21tr12:05:131
2787699220,21cyclictest16468-21expr12:30:131
2787699220,21cyclictest14160-21latency07:40:161
2787699220,21cyclictest10622-21cat08:30:111
2787699220,21cyclictest0-21swapper/108:48:291
2787699220,20cyclictest7301-21cut09:20:161
2787699220,20cyclictest21300-21munin-run12:40:001
27881992119,1cyclictest28-21ksoftirqd/209:25:002
2788199210,20cyclictest870-21systemd-logind11:03:522
2787699218,9cyclictest1978-21chrt07:20:141
2787699213,17cyclictest16945-21smtpd09:39:151
27876992114,6cyclictest6295-21egrep11:15:131
27876992114,6cyclictest23995-21anvil08:54:041
27876992114,6cyclictest0-21swapper/111:25:191
27876992114,5cyclictest0-21swapper/109:25:171
27876992113,7cyclictest25853-21awk08:55:191
2787699210,7cyclictest16501-21expr10:35:141
2787699210,6cyclictest6072-21sed09:20:011
2787699210,6cyclictest6072-21sed09:20:011
2787699210,6cyclictest32340-21munin-run11:05:011
2787699210,6cyclictest31027-21cat12:00:011
2787699210,6cyclictest122602chrt07:36:161
2787699210,20cyclictest31798-21mailstats08:10:201
2787699210,20cyclictest31742-21tune2fs12:00:131
2787699210,20cyclictest28564-21expr07:10:161
2787699210,20cyclictest25630-21sed08:00:191
2787699210,20cyclictest25630-21sed08:00:181
2787699210,20cyclictest23292-21cat09:50:131
2787699210,20cyclictest22989-21awk10:45:181
2787699210,20cyclictest20219-21nfsd410:40:191
2787699210,20cyclictest15652-21chrt10:34:521
2787699210,20cyclictest14251-21sed09:35:011
2787699210,20cyclictest10516-21expr12:20:151
2787699210,20cyclictest0-21swapper/112:11:441
2787699210,20cyclictest0-21swapper/110:25:141
2787699210,19cyclictest0-21swapper/107:30:151
27876992013,6cyclictest716-21apt-key08:15:011
27876992013,6cyclictest0-21swapper/107:50:121
2787699200,6cyclictest8198-21sed08:25:181
2787699200,1cyclictest0-21swapper/112:15:171
2787699200,1cyclictest0-21swapper/109:00:141
2787699200,19cyclictest0-21swapper/110:05:131
2787699200,0cyclictest0-21swapper/111:45:141
2787699200,0cyclictest0-21swapper/111:40:171
2787699200,0cyclictest0-21swapper/111:10:191
2787699200,0cyclictest0-21swapper/108:35:171
2788199194,1cyclictest28-21ksoftirqd/208:30:002
2788199192,2cyclictest19401-21chrt11:37:572
27881991915,3cyclictest18871-21nvmesmart_nvme009:40:212
2788199190,4cyclictest870-21systemd-logind10:43:522
2787699190,0cyclictest0-21swapper/109:10:271
2787299191,16cyclictest6075-21nfsd410:15:180
2788199182,15cyclictest0-21swapper/212:10:372
27881991815,2cyclictest26445-21chrt10:51:032
27881991814,3cyclictest0-21swapper/211:05:582
2788199181,16cyclictest1348-21lxd11:46:432
2788199181,16cyclictest0-21swapper/211:15:152
2788199180,1cyclictest111rcu_preempt08:42:512
2788199180,1cyclictest0-21swapper/210:15:152
2788199180,1cyclictest0-21swapper/210:05:132
2788199180,17cyclictest0-21swapper/209:25:212
2787299182,15cyclictest0-21swapper/009:55:200
27872991815,2cyclictest8339-21seq11:16:490
27872991814,3cyclictest2850-21gmain08:53:320
2787299180,17cyclictest1516-21lxd07:54:430
2788199172,14cyclictest0-21swapper/209:05:142
27881991716,1cyclictest28-21ksoftirqd/207:50:102
27881991715,1cyclictest28-21ksoftirqd/210:10:142
27881991715,1cyclictest28-21ksoftirqd/209:00:212
27881991715,1cyclictest28-21ksoftirqd/208:55:192
27881991715,1cyclictest28-21ksoftirqd/207:35:192
27881991714,2cyclictest5945-21systemctl09:20:012
27881991714,2cyclictest5945-21systemctl09:20:002
27881991714,2cyclictest399-20systemd-journal11:21:072
27881991714,2cyclictest3815-21latency_hist08:20:012
27881991714,2cyclictest26782-21tail09:55:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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