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2026-03-07 - 12:02
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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 Fri Mar 06, 2026 12:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
611799242,18cyclictest0-21swapper/008:35:010
6129992112,8cyclictest0-21swapper/208:00:152
612499210,3cyclictest0-21swapper/109:50:171
6124992018,1cyclictest9788-21mii-tool12:00:161
611799200,18cyclictest0-21swapper/011:28:450
612999194,1cyclictest0-21swapper/211:51:142
612999193,15cyclictest0-21swapper/207:46:552
612999192,11cyclictest4585-21perf10:00:012
6129991916,2cyclictest17330-21needreboot08:25:172
612499193,9cyclictest27648-21perf10:39:591
6124991915,3cyclictest0-21swapper/109:21:371
6124991915,3cyclictest0-21swapper/108:50:131
6124991914,4cyclictest399-20systemd-journal11:39:511
6117991916,2cyclictest21407-21cut12:20:170
611799191,15cyclictest0-21swapper/008:53:400
612999182,1cyclictest10923-21pluginstate09:10:202
612999182,15cyclictest14319-21cpuspeed_turbos10:15:112
6129991814,3cyclictest18124-21awk11:19:592
6129991814,3cyclictest1517-21lxd09:22:412
6129991814,2cyclictest1551-21snapd10:05:092
6124991815,1cyclictest0-21swapper/109:41:391
6124991814,3cyclictest870-21systemd-logind11:18:521
6124991813,3cyclictest0-21swapper/110:28:481
612499181,16cyclictest2007-21systemd-journal10:00:271
612499180,3cyclictest9661-21pzem10:05:201
612499180,17cyclictest4099-21H222:10:211
611799182,15cyclictest22628-21expr10:30:140
6117991814,1cyclictest0-21swapper/008:10:220
6117991813,4cyclictest843-21systemd-network10:37:140
611799181,2cyclictest29979-21nfsd409:45:170
6129991715,1cyclictest0-21swapper/208:45:172
6129991715,1cyclictest0-21swapper/207:25:212
6129991714,2cyclictest399-20systemd-journal08:17:002
6129991714,2cyclictest21980-21pzem_energy07:35:202
6129991714,2cyclictest18863-21mailstats12:15:202
6129991714,2cyclictest13250-21grep07:20:172
6129991714,2cyclictest12189-21/usr/sbin/munin09:15:222
612999170,2cyclictest7599-21ntpq11:55:192
612999170,2cyclictest7312-21chrt09:05:162
612999170,2cyclictest6441-21wc07:10:142
612999170,2cyclictest32466-21cat09:50:162
612999170,1cyclictest5743-21timerwakeupswit09:00:222
612999170,16cyclictest9106-21tr12:00:142
612999170,16cyclictest863-21avahi-daemon07:55:192
612999170,16cyclictest6760-21nfsd410:00:172
612999170,16cyclictest5651-21fschecks_count08:05:142
612999170,16cyclictest27975-21dpkg10:40:002
612999170,16cyclictest26279-21perf11:35:002
612999170,16cyclictest26257-21idleruntime12:30:162
612999170,16cyclictest24920-21systemctl07:40:192
612999170,16cyclictest22863-21grep12:25:142
612999170,16cyclictest2254-21proc_pri08:55:192
612999170,16cyclictest16911-21munin-run12:15:002
612999170,16cyclictest13983-21expr08:20:142
612999170,16cyclictest13959-21kernelversion11:10:162
612999170,16cyclictest10427-21latency_hist08:15:012
6124991717,0cyclictest0-21swapper/107:20:201
6124991715,1cyclictest21-21ksoftirqd/112:35:131
6124991715,1cyclictest0-21swapper/109:55:181
6124991714,2cyclictest7856-21expr11:00:141
6124991714,2cyclictest30249-21fschecks_count11:40:131
6124991714,2cyclictest26091-21df12:30:141
6124991714,2cyclictest21298-21cut08:35:011
6124991714,2cyclictest20854-21expr07:35:141
612499171,15cyclictest24764-21cat11:30:141
612499170,2cyclictest3414-21master07:53:541
612499170,2cyclictest3053-21systemd-logind09:14:521
612499170,2cyclictest24346-21grep09:35:171
612499170,2cyclictest23370-21/usr/sbin/munin10:30:171
612499170,2cyclictest20339-21expr12:20:131
612499170,2cyclictest1856-21systemd-udevd08:16:521
612499170,2cyclictest13988-21cat08:20:141
612499170,2cyclictest10151-21lxd12:28:411
612499170,17cyclictest0-21swapper/107:40:161
612499170,16cyclictest8633-21proxymap07:13:511
612499170,16cyclictest6263-21nfsd408:05:181
612499170,16cyclictest2894-21trivial-rewrite08:56:321
612499170,16cyclictest28444-21if_enp1s008:45:171
612499170,16cyclictest27155-21dpkg08:45:011
612499170,16cyclictest21876-21grep09:30:211
612499170,16cyclictest16806-21fschecks_time08:25:141
612499170,16cyclictest15775-21pzem_voltage10:15:191
612499170,16cyclictest15105-21expr12:10:111
6117991714,2cyclictest4099-21H222:10:210
6117991714,2cyclictest3311-21mailstats10:50:230
6117991714,2cyclictest31095-21munin-run10:45:010
6117991714,2cyclictest26414-21ls09:40:140
6117991714,2cyclictest1523-21lxd07:14:410
6117991714,2cyclictest13265-21ntp_kernel_err07:20:170
611799171,15cyclictest16179-21nfsd409:20:170
611799171,15cyclictest0-21swapper/009:00:220
611799170,2cyclictest71592sleep008:07:300
611799170,2cyclictest6092-21cut11:55:010
611799170,2cyclictest2981-21chrt08:57:290
611799170,2cyclictest16881-21cron12:19:540
611799170,2cyclictest1568-21munin-plugin-st08:00:000
611799170,2cyclictest13741-21pzem_voltage09:15:220
611799170,2cyclictest11967-21cat10:10:150
611799170,2cyclictest11119-21ls09:10:210
611799170,16cyclictest7544-21cut11:55:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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