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2026-07-16 - 16:16
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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 Thu Jul 16, 2026 12:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4203992625,1cyclictest0-21swapper/108:00:151
4202992421,2cyclictest17598-21ntp_kernel_pll_12:15:180
420299240,19cyclictest12018-21latency_hist10:15:010
420499230,18cyclictest0-21swapper/212:35:162
4203992311,11cyclictest22458-21find11:30:101
420299230,5cyclictest0-21swapper/010:58:500
4204992214,4cyclictest0-21swapper/211:05:132
4203992213,5cyclictest0-21swapper/112:20:111
420299222,14cyclictest16295-21python311:20:000
420299210,20cyclictest843-21systemd-network10:42:450
420499202,3cyclictest18520-21cron09:30:012
420499200,4cyclictest21545-21latency_hist09:35:002
420399202,3cyclictest30267-21smtpd11:43:111
420399200,20cyclictest0-21swapper/111:24:401
420399200,0cyclictest0-21swapper/109:40:141
4202992018,1cyclictest0-21swapper/007:59:100
4202992018,1cyclictest0-21swapper/007:59:100
4202992017,2cyclictest28991-21if_lxdbr011:40:170
420499192,2cyclictest4099-21H222:10:212
420499192,2cyclictest26421-21nfsd411:35:172
420499192,2cyclictest15803-21fgrep08:25:212
420499192,2cyclictest12551-21timerwakeupswit09:15:222
420499190,16cyclictest3983-21H222:10:212
420499190,16cyclictest3981-21H222:10:212
420499190,16cyclictest3979-21H222:10:212
4203991916,2cyclictest13331-21date09:20:011
420399191,15cyclictest0-21swapper/110:00:141
4202991917,1cyclictest0-21swapper/007:30:170
4202991915,3cyclictest29645-21systemctl12:40:000
420299191,17cyclictest22588-21tr11:30:130
420299190,3cyclictest0-21swapper/010:15:130
420299190,2cyclictest9050-21iwlist11:05:140
420299190,2cyclictest3981-21H222:10:210
420299190,16cyclictest3991-21H222:10:210
420299190,16cyclictest3991-21H222:10:210
420299190,16cyclictest3987-21H222:10:210
420499182,2cyclictest7322-21switchtime08:10:212
4204991816,1cyclictest0-21swapper/211:01:472
4204991816,1cyclictest0-21swapper/210:20:212
4204991815,2cyclictest3987-21H222:10:212
4204991815,2cyclictest0-21swapper/208:35:012
4204991815,1cyclictest0-21swapper/210:56:132
4204991814,3cyclictest3989-21H222:10:212
420499181,16cyclictest1523-21lxd08:54:422
420499180,2cyclictest3989-21H222:10:212
420499180,2cyclictest3985-21H222:10:212
420499180,17cyclictest3991-21H222:10:212
420499180,17cyclictest3991-21H222:10:212
420499180,17cyclictest3989-21H222:10:212
420499180,17cyclictest13957-21cp08:25:012
420499180,17cyclictest13957-21cp08:25:012
4203991816,1cyclictest0-21swapper/109:51:311
4203991816,1cyclictest0-21swapper/108:32:191
4203991815,2cyclictest27972-21cstates09:45:131
4203991815,2cyclictest22339-21sessionclean08:38:591
4203991814,3cyclictest3981-21H222:10:211
4203991814,3cyclictest1100-21snmpd07:26:041
420399181,16cyclictest10403-21latency_hist09:15:001
420399181,16cyclictest10403-21latency_hist09:15:001
420399180,3cyclictest3981-21H222:10:211
420399180,2cyclictest4035-21H222:10:211
420399180,2cyclictest3991-21H222:10:211
420399180,2cyclictest3989-21H222:10:211
420399180,2cyclictest3981-21H222:10:211
420399180,2cyclictest3979-21H222:10:211
420399180,18cyclictest0-21swapper/112:25:011
420399180,18cyclictest0-21swapper/108:27:101
420399180,17cyclictest3983-21H222:10:211
420399180,17cyclictest32013-21needreboot11:45:161
420399180,17cyclictest0-21swapper/110:35:011
420399180,17cyclictest0-21swapper/109:05:111
420399180,16cyclictest3991-21H222:10:211
420299182,15cyclictest0-21swapper/009:05:130
4202991818,0cyclictest0-21swapper/011:20:130
4202991815,1cyclictest0-21swapper/007:17:430
4202991814,3cyclictest20500-21expr08:35:140
4202991814,3cyclictest0-21swapper/010:45:160
4202991814,1cyclictest0-21swapper/009:10:200
4202991814,1cyclictest0-21swapper/009:10:200
4202991813,2cyclictest3981-21H222:10:210
420299181,16cyclictest25082-21cpuspeed_turbos09:40:150
420299181,16cyclictest0-21swapper/011:13:260
420299180,2cyclictest3981-21H222:10:210
420299180,2cyclictest15632-21chrt09:22:430
420299180,17cyclictest3987-21H222:10:210
420299180,17cyclictest20275-21nfsd409:30:180
420299180,16cyclictest4099-21H222:10:210
4204991715,1cyclictest23201-21missed_timers09:35:182
4204991715,1cyclictest23201-21missed_timers09:35:182
4204991715,1cyclictest0-21swapper/209:00:462
4204991714,2cyclictest7032-21/usr/sbin/munin12:00:172
4204991714,2cyclictest4035-21H222:10:212
4204991714,2cyclictest3989-21H222:10:212
4204991714,2cyclictest3983-21H222:10:212
4204991714,2cyclictest3981-21H222:10:212
4204991714,2cyclictest26656-21cpuspeed_turbos07:50:112
4204991714,2cyclictest25014-21df12:30:132
4204991714,2cyclictest17792-21/usr/sbin/munin10:25:192
4204991714,2cyclictest15441-21/usr/sbin/munin07:30:102
4204991713,2cyclictest3987-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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