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2026-09-20 - 21:50
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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 Sun Sep 20, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1372399374,17cyclictest455-21plymouthd09:48:401
13724992017,2cyclictest4414-21timerwakeupswit11:30:212
13723992015,4cyclictest6475-21grep11:35:171
1372499193,15cyclictest877-21http_loadtime09:35:182
13724991917,1cyclictest28-21ksoftirqd/211:26:482
13724991917,1cyclictest16670-21cat08:10:182
13724991917,1cyclictest0-21swapper/208:34:092
13724991915,3cyclictest0-21swapper/212:15:562
13724991914,3cyclictest27931-21python310:25:002
13724991914,2cyclictest17804-21fschecks_time10:05:142
1372399193,15cyclictest0-21swapper/109:57:071
1372399192,2cyclictest23616-21latency_hist09:20:001
1372399190,3cyclictest0-21swapper/110:29:571
1372299190,18cyclictest0-21swapper/007:56:200
1372499182,15cyclictest0-21swapper/208:20:162
13724991816,1cyclictest0-21swapper/209:52:112
13724991815,2cyclictest24293-21missed_timers11:10:182
13724991814,3cyclictest1300-21lxd12:32:442
13724991814,3cyclictest11504-21mktemp10:50:022
13724991814,3cyclictest0-21swapper/207:41:082
1372499181,2cyclictest29464-21grep07:35:192
1372499180,3cyclictest15991-21sed11:54:592
1372499180,2cyclictest8796-21bounce12:39:162
1372499180,16cyclictest5766-21cron09:45:002
1372399182,2cyclictest3976-21H222:10:211
1372399182,15cyclictest0-21swapper/108:24:561
13723991815,2cyclictest9367-21iwlist10:45:161
13723991815,2cyclictest20793-21apt09:14:591
13723991815,1cyclictest27995-21nfsd409:25:191
13723991814,3cyclictest3976-21H222:10:211
13723991814,2cyclictest4099-21H222:10:211
13723991813,3cyclictest0-21swapper/108:50:181
1372399181,16cyclictest863-21avahi-daemon10:10:201
1372399181,16cyclictest28842-21http_loadtime07:35:161
1372399181,16cyclictest26765-21ntp_kernel_pll_07:30:191
1372399180,17cyclictest2007-21systemd-journal10:38:081
1372399180,17cyclictest2007-21systemd-journal10:38:081
1372399180,17cyclictest0-21swapper/111:18:111
13722991816,1cyclictest2600-21sessionclean09:39:000
13722991815,2cyclictest4154-21switchtime10:35:230
13722991815,2cyclictest4154-21switchtime10:35:220
13722991814,3cyclictest21899-21systemctl11:05:220
1372299181,2cyclictest11308-21latency_hist10:50:000
1372299180,2cyclictest3983-21H222:10:210
1372299180,17cyclictest21555-21apt-config08:20:020
13724991715,1cyclictest34642chrt08:43:592
13724991715,1cyclictest28212-21processes09:25:212
13724991715,1cyclictest0-21swapper/210:35:192
13724991715,1cyclictest0-21swapper/210:35:182
13724991714,2cyclictest7198-21/usr/sbin/munin07:55:222
13724991714,2cyclictest496-21sshd08:39:512
13724991714,2cyclictest3983-21H222:10:212
13724991714,2cyclictest3983-21H222:10:212
13724991714,2cyclictest3976-21H222:10:212
13724991714,2cyclictest30267-21sensors10:25:222
13724991714,2cyclictest24543-21sort10:15:232
13724991714,2cyclictest21741-21munin-run12:05:012
13724991714,2cyclictest20144-21ntp_kernel_pll_08:15:202
13724991714,2cyclictest17985-21nfsd407:15:182
13724991714,2cyclictest17331-21cpuspeed_turbos11:00:142
13724991714,2cyclictest1659-21/usr/sbin/munin12:25:172
13724991714,2cyclictest14550-21snapd10:45:282
13724991713,3cyclictest0-21swapper/210:31:522
1372499170,2cyclictest7637-21sessionclean11:39:012
1372499170,2cyclictest4035-21H222:10:212
1372499170,2cyclictest26312-21basename09:25:012
1372499170,2cyclictest26312-21basename09:25:002
1372499170,2cyclictest22419-21nfsd409:15:192
1372499170,2cyclictest15199-21apt09:05:012
1372499170,2cyclictest10477-21turbostat.cron11:45:012
1372499170,1cyclictest3989-21H222:10:212
1372499170,16cyclictest7563-21grep09:45:192
1372499170,16cyclictest6171-21swap08:45:212
1372499170,16cyclictest3989-21H222:10:212
1372499170,16cyclictest30639-21sshd11:20:382
1372499170,16cyclictest26808-21timerandwakeup08:25:232
1372499170,16cyclictest26793-21if_lxdbr011:15:152
1372499170,16cyclictest26096-21ntp_kernel_err12:10:202
1372499170,16cyclictest2447-21latency07:45:172
1372499170,16cyclictest17913-21sed09:08:592
1372499170,16cyclictest15247-21perf08:10:012
1372499170,16cyclictest11509-21grep11:45:152
1372499170,16cyclictest10116-21apt-get08:55:142
1372399172,1cyclictest21-21ksoftirqd/112:04:501
1372399172,1cyclictest0-21swapper/107:56:121
13723991716,0cyclictest0-21swapper/111:05:171
13723991715,1cyclictest3989-21H222:10:211
13723991715,1cyclictest0-21swapper/112:25:141
13723991715,1cyclictest0-21swapper/110:30:471
13723991714,2cyclictest5070-21run-parts09:40:221
13723991714,2cyclictest32271-21chrt12:21:591
13723991714,2cyclictest29581-21apt-key09:30:011
13723991714,2cyclictest27243-21threads10:20:221
13723991714,2cyclictest24418-21cat09:20:141
13723991714,2cyclictest24418-21cat09:20:141
13723991714,2cyclictest23098-21cut12:05:181
13723991714,2cyclictest17196-21wc08:10:221
13723991714,2cyclictest16359-21munin-run07:15:011
13723991714,2cyclictest16359-21munin-run07:15:011
13723991714,2cyclictest12445-21perf09:00:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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