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2026-03-23 - 16:13
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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 23, 2026 12:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1473499225,11cyclictest0-21swapper/211:20:022
1473499224,10cyclictest0-21swapper/210:44:592
1473499220,4cyclictest0-21swapper/211:25:202
1473499202,15cyclictest0-21swapper/208:07:462
14734992013,2cyclictest17763-21cpuspeed_turbos11:00:122
14734992010,0cyclictest0-21swapper/208:10:142
14733992013,6cyclictest24985-21grep12:10:121
1473399200,18cyclictest7309-21grep10:40:151
1473399200,17cyclictest0-21swapper/108:40:001
1473499190,16cyclictest0-21swapper/210:56:292
1473399190,18cyclictest0-21swapper/109:22:571
14732991917,1cyclictest0-21swapper/008:18:170
14732991915,3cyclictest0-21swapper/011:23:340
1473299190,18cyclictest843-21systemd-network12:29:470
1473299190,18cyclictest0-21swapper/010:18:540
1473499183,9cyclictest2170-21latency_hist08:40:012
1473499182,15cyclictest0-21swapper/212:19:182
1473499182,15cyclictest0-21swapper/211:15:142
14734991815,2cyclictest30435-21cpuspeed_turbos07:35:152
14734991814,3cyclictest7709-21latency_hist11:40:002
1473499180,3cyclictest20873-21munin-run10:10:012
1473399182,1cyclictest174022chrt10:03:301
1473399182,15cyclictest0-21swapper/110:17:431
14733991815,2cyclictest25333-21chrt08:22:141
14733991814,3cyclictest23763-21perf07:25:011
14733991814,3cyclictest23763-21perf07:25:011
14733991814,3cyclictest20684-21cpuspeed_turbos08:15:131
1473399181,2cyclictest13662-21cut09:00:001
1473399181,16cyclictest4359-21nfsd408:40:171
1473299182,2cyclictest6783-21cat09:45:010
1473299182,15cyclictest0-21swapper/008:39:580
1473299181,16cyclictest0-21swapper/007:30:180
1473299180,3cyclictest1829-21systemd-journal10:42:120
1473299180,17cyclictest455-21plymouthd12:40:010
1473499172,1cyclictest28-21ksoftirqd/208:58:282
14734991715,1cyclictest0-21swapper/210:25:132
14734991715,1cyclictest0-21swapper/210:20:002
14734991714,2cyclictest8542-21sed07:50:212
14734991714,2cyclictest3053-21systemd-logind12:26:512
14734991714,2cyclictest2872-21systemd-logind10:50:512
14734991714,2cyclictest2665-21sed07:40:222
14734991714,2cyclictest23432-21pzem_voltage12:05:182
14734991714,2cyclictest22861-21pzem_current07:20:192
14734991714,2cyclictest22861-21pzem_current07:20:192
14734991714,2cyclictest2262-21nfsd409:35:172
14734991714,2cyclictest14106-21expr11:50:152
1473499171,15cyclictest4035-21H222:10:212
1473499171,15cyclictest4035-21H222:10:212
1473499170,2cyclictest4099-21H222:10:212
1473499170,2cyclictest27287-21grep08:25:172
1473499170,2cyclictest22699-21cron11:09:002
1473499170,2cyclictest21281-21/usr/sbin/munin10:10:122
1473499170,1cyclictest0-21swapper/209:15:152
1473499170,16cyclictest8509-21latency_hist08:50:012
1473499170,16cyclictest6116-21cat09:40:212
1473499170,16cyclictest5463-21cat10:35:242
1473499170,16cyclictest5086-21grep12:30:182
1473499170,16cyclictest30302-21cpu12:20:112
1473499170,16cyclictest29088-21head09:25:182
1473499170,16cyclictest2204-21proc_pri10:30:182
1473499170,16cyclictest21851-21ntpq08:15:192
1473499170,16cyclictest18179-21apache_volume07:15:122
1473499170,16cyclictest18036-21nfsd409:05:192
1473499170,16cyclictest15189-21missed_timers09:00:182
1473499170,16cyclictest1516-21lxd09:50:412
1473499170,16cyclictest12174-21nfsd411:45:182
1473499170,16cyclictest0-21swapper/208:30:142
1473499170,16cyclictest0-21swapper/207:55:152
14733991715,1cyclictest0-21swapper/112:35:191
14733991715,1cyclictest0-21swapper/108:45:201
14733991715,1cyclictest0-21swapper/108:31:331
14733991714,2cyclictest6462-21sed11:35:201
14733991714,2cyclictest25633-21nfsd407:25:191
14733991714,2cyclictest1348-21lxd11:10:411
1473399171,15cyclictest28817-21grep12:15:181
1473399171,15cyclictest25973-21apt-get08:25:121
1473399170,2cyclictest5601-21lxd10:52:411
1473399170,2cyclictest3979-21H222:10:211
1473399170,2cyclictest20963-21gpgv10:10:011
1473399170,2cyclictest20732-21dpkg07:20:021
1473399170,2cyclictest19164-21nvmesmart_nvme008:10:181
1473399170,2cyclictest16766-21snapd09:40:121
1473399170,2cyclictest16616-21latency_hist09:05:011
1473399170,2cyclictest15216-21expr10:55:131
1473399170,2cyclictest10631-21grep10:45:171
1473399170,2cyclictest10631-21grep10:45:161
1473399170,2cyclictest0-21swapper/110:00:021
1473399170,2cyclictest0-21swapper/110:00:011
1473399170,16cyclictest399-20systemd-journal07:50:011
1473399170,16cyclictest3725-21latency_hist07:45:011
1473399170,16cyclictest2029-21grep10:30:161
1473399170,16cyclictest16744-21snapd11:20:181
1473399170,16cyclictest10151-21lxd09:36:411
1473299172,1cyclictest0-21swapper/011:06:520
1473299172,15cyclictest9-21ksoftirqd/011:43:040
14732991717,0cyclictest0-21swapper/010:14:250
14732991715,1cyclictest30209-21expr10:25:150
14732991715,1cyclictest0-21swapper/010:37:360
14732991714,2cyclictest9941-21cpuspeed_turbos09:50:140
14732991714,2cyclictest4099-21H222:10:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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