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2026-03-31 - 00:43
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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 Mar 30, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
270599230,5cyclictest0-21swapper/108:05:471
269899230,19cyclictest3741-21latency_hist11:00:000
2705992221,1cyclictest0-21swapper/110:10:561
269899212,17cyclictest0-21swapper/007:45:010
270599208,11cyclictest0-21swapper/110:01:251
269899203,16cyclictest0-21swapper/012:21:350
2709991917,1cyclictest0-21swapper/209:50:402
2709991914,3cyclictest16455-21nvmesmart_nvme009:25:202
270599192,3cyclictest13147-21munin-run08:25:011
2705991916,2cyclictest9672-21awk12:05:191
270599190,18cyclictest0-21swapper/111:57:571
270599190,18cyclictest0-21swapper/111:57:571
270599190,17cyclictest16749-21snapd12:25:181
270999183,1cyclictest28-21ksoftirqd/208:22:422
2709991816,1cyclictest190592sleep210:29:362
2709991815,2cyclictest9781-21smartctl12:05:212
270999180,17cyclictest16745-21snapd09:45:482
270599183,1cyclictest0-21swapper/107:35:121
270599182,2cyclictest30216-21cat07:55:231
270599182,15cyclictest71402chrt08:14:321
270599182,15cyclictest21-21ksoftirqd/107:15:141
270599182,15cyclictest161362sleep110:22:071
2705991815,2cyclictest26907-21awk08:50:001
2705991813,4cyclictest5981-21grep11:00:211
270599181,2cyclictest5787-21grep12:00:131
270599181,2cyclictest32406-21cut08:00:171
270599181,16cyclictest29255-21awk10:45:181
270599181,16cyclictest19752-21if_eno108:35:151
270599181,16cyclictest16861-21egrep10:25:131
270599180,17cyclictest26442-21pzem12:35:201
269899182,15cyclictest27285-21chrt08:50:030
269899180,4cyclictest0-21swapper/010:25:180
2709991715,1cyclictest0-21swapper/210:15:212
2709991714,2cyclictest3989-21H222:10:212
2709991714,2cyclictest30094-21taskset10:48:572
2709991714,2cyclictest30068-21sendmail_mailtr07:55:222
2709991714,2cyclictest24944-21turbostat07:50:012
2709991714,2cyclictest22453-21munin-plugin-st07:45:012
2709991714,2cyclictest15945-21lxd09:06:422
2709991714,2cyclictest1516-21lxd08:42:422
2709991714,2cyclictest14588-21expr10:20:122
2709991714,2cyclictest11519-21apache_volume07:25:112
270999171,15cyclictest26577-21cut11:40:012
270999171,15cyclictest0-21swapper/211:05:142
270999171,15cyclictest0-21swapper/209:00:012
270999170,2cyclictest964-21nfsd411:50:212
270999170,2cyclictest4025-21changes_open22:10:212
270999170,2cyclictest3985-21H222:10:212
270999170,2cyclictest24907-21/usr/sbin/munin12:35:152
270999170,2cyclictest20541-21cat12:25:182
270999170,2cyclictest14947-21munin-plugin-st09:25:012
270999170,1cyclictest0-21swapper/208:16:042
270999170,16cyclictest7105-21smartctl10:05:202
270999170,16cyclictest502-21idleruntime09:55:172
270999170,16cyclictest3979-21H222:10:212
270999170,16cyclictest28406-21missed_timers08:50:182
270999170,16cyclictest26196-21memory10:40:162
270999170,16cyclictest17025-21expr12:20:132
270999170,16cyclictest16823-21latency_hist07:35:012
270999170,16cyclictest16743-21snapd07:15:182
270999170,16cyclictest12039-21sleep09:20:012
2705991716,1cyclictest21-21ksoftirqd/109:30:121
2705991716,0cyclictest0-21swapper/109:45:131
2705991716,0cyclictest0-21swapper/108:15:181
2705991715,1cyclictest7482-21expr11:05:141
2705991715,1cyclictest3989-21H222:10:211
2705991715,1cyclictest21-21ksoftirqd/112:15:171
2705991715,1cyclictest21-21ksoftirqd/109:05:141
2705991715,1cyclictest201rcuc/109:00:181
2705991715,1cyclictest0-21swapper/111:15:171
2705991714,2cyclictest8045-21sed10:09:011
2705991714,2cyclictest21-21ksoftirqd/110:55:191
2705991714,2cyclictest17372-21sed11:20:201
2705991714,2cyclictest10098-21/usr/sbin/munin11:10:111
2705991713,3cyclictest29578-21grep11:45:161
2705991713,3cyclictest0-21swapper/108:50:141
270599171,1cyclictest25667-21apt-config07:50:021
270599171,15cyclictest23778-21mailstats12:30:211
270599171,15cyclictest21-21ksoftirqd/107:30:181
270599171,15cyclictest19442chrt11:52:251
270599171,15cyclictest0-21swapper/110:40:011
270599171,15cyclictest0-21swapper/110:40:011
270599171,15cyclictest0-21swapper/108:40:161
270599170,2cyclictest3991-21H222:10:211
270599170,2cyclictest3582-21expr07:10:121
270599170,2cyclictest30180-21expr08:55:141
270599170,2cyclictest18670-21expr11:25:121
270599170,16cyclictest455-21plymouthd09:35:091
270599170,16cyclictest28235-21pzem_voltage11:40:201
270599170,16cyclictest27211-21sendmail-mta10:41:551
270599170,16cyclictest16264-21nfsd409:25:181
270599170,16cyclictest12890-21systemctl10:15:211
270599170,16cyclictest12135-21cut07:25:131
270599170,16cyclictest0-21swapper/111:40:011
270599170,16cyclictest0-21swapper/107:45:141
269899172,1cyclictest26440-21fschecks_time07:50:160
2698991715,1cyclictest9-21ksoftirqd/007:15:380
2698991715,1cyclictest0-21swapper/010:16:250
2698991715,1cyclictest0-21swapper/009:40:200
2698991714,2cyclictest8768-21anvil07:23:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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