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2026-07-21 - 10:15
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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 Tue Jul 21, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7198992423,1cyclictest0-21swapper/200:32:182
719199236,14cyclictest0-21swapper/021:20:170
719399227,11cyclictest14077-21latency_hist20:20:011
7193992211,4cyclictest32746-21python323:44:591
7198992119,1cyclictest97762chrt19:14:472
719899205,1cyclictest28-21ksoftirqd/222:00:552
719899204,15cyclictest0-21swapper/220:13:232
7198992018,1cyclictest28-21ksoftirqd/222:28:592
719899201,1cyclictest0-21swapper/220:23:242
719899200,19cyclictest426-21systemd-udevd23:30:522
7193992012,4cyclictest0-21swapper/120:30:521
7191992017,2cyclictest9-21ksoftirqd/022:35:200
7191992011,8cyclictest0-21swapper/021:15:010
7198991917,1cyclictest28-21ksoftirqd/219:40:222
7198991917,1cyclictest20216-21cut22:24:592
7198991915,3cyclictest0-21swapper/220:59:032
7198991913,3cyclictest0-21swapper/219:38:232
719899191,16cyclictest15867-21cpuspeed_turbos19:25:152
719899190,18cyclictest0-21swapper/222:31:232
719899190,16cyclictest3991-21H222:10:212
719899190,16cyclictest27438-21tr21:40:152
719399192,2cyclictest1900-21grep19:55:211
7193991916,1cyclictest0-21swapper/122:03:031
7193991915,2cyclictest0-21swapper/119:14:401
719399190,5cyclictest0-21swapper/100:37:201
719199193,15cyclictest9-21ksoftirqd/019:20:300
7191991917,1cyclictest0-21swapper/021:35:000
7191991916,2cyclictest3987-21H222:10:210
7191991914,1cyclictest0-21swapper/021:58:210
719199190,1cyclictest0-21swapper/021:40:340
719199190,18cyclictest0-21swapper/023:04:530
719899183,1cyclictest0-21swapper/223:40:152
719899182,15cyclictest12311-21taskset19:17:052
7198991815,2cyclictest3991-21H222:10:212
7198991815,2cyclictest30691-21mailstats00:35:212
7198991812,5cyclictest843-21systemd-network20:50:042
719899181,15cyclictest0-21swapper/223:50:142
7198991810,4cyclictest0-21swapper/219:52:412
719899180,17cyclictest870-21systemd-logind21:23:522
719899180,17cyclictest3256-21apache223:46:402
719899180,17cyclictest27629-21cpuspeed_turbos23:35:132
719899180,17cyclictest21959-21latency00:20:182
7193991816,1cyclictest18313-21cpuspeed_turbos00:15:121
7193991815,2cyclictest3937-21java20:06:351
7193991815,2cyclictest31791-21timerwakeupswit19:50:221
719399181,2cyclictest28008-21chrt20:40:491
719399180,2cyclictest3991-21H222:10:211
719399180,17cyclictest7397-21grep21:04:591
719399180,15cyclictest3450-21gsd-color22:30:001
7191991816,1cyclictest9-21ksoftirqd/021:50:120
7191991816,1cyclictest0-21swapper/000:29:560
719199180,15cyclictest3985-21H222:10:210
7198991714,2cyclictest6556-21ls20:05:152
7198991714,2cyclictest4035-21H222:10:212
7198991714,2cyclictest3976-21H222:10:212
7198991714,2cyclictest3976-21H222:10:212
7198991714,2cyclictest30607-21fschecks_time21:45:152
7198991714,2cyclictest30478-21awk22:40:182
7198991714,2cyclictest20680-21nvmesmart_nvme023:20:202
7198991714,2cyclictest20170-21nfsd421:25:182
7198991714,2cyclictest14883-21cat19:20:222
7198991714,2cyclictest13174-21ntp_states20:15:212
7198991714,2cyclictest11832-21awk21:10:182
7198991714,2cyclictest10238-21grep22:05:162
719899171,15cyclictest57092chrt21:59:312
719899171,15cyclictest3985-21H222:10:212
719899171,15cyclictest28-21ksoftirqd/221:30:222
719899171,15cyclictest19043-21ntpq20:25:192
719899171,15cyclictest0-21swapper/222:55:152
719899171,15cyclictest0-21swapper/222:55:152
7198991711,5cyclictest0-21swapper/221:05:192
719899170,2cyclictest9079-21chrt23:57:452
719899170,2cyclictest1267-21switchtime22:45:212
719899170,1cyclictest3991-21H222:10:212
719899170,16cyclictest9678-21/usr/sbin/munin00:00:212
719899170,16cyclictest455-21plymouthd20:35:192
719899170,16cyclictest3987-21H222:10:212
719899170,16cyclictest3981-21H222:10:212
719899170,16cyclictest3976-21H222:10:212
719899170,16cyclictest27328-21awk20:40:192
719899170,16cyclictest26977-21fschecks_time22:35:152
719899170,16cyclictest2356-21smtpd19:56:102
719899170,16cyclictest2341-21/usr/sbin/munin22:50:202
719899170,16cyclictest20380-21/usr/sbin/munin20:30:102
719899170,16cyclictest20209-21ntp_kernel_err19:30:182
719899170,16cyclictest16494-21/usr/sbin/munin23:15:132
719899170,16cyclictest11704-21if_enp1s023:05:162
719399172,1cyclictest21-21ksoftirqd/123:47:141
719399172,1cyclictest0-21swapper/119:17:151
7193991716,1cyclictest21-21ksoftirqd/122:24:291
7193991716,1cyclictest21-21ksoftirqd/120:46:171
7193991715,1cyclictest21025-21cpuspeed_turbos00:20:151
7193991714,2cyclictest3991-21H222:10:211
7193991714,2cyclictest3983-21H222:10:211
7193991714,2cyclictest3976-21H222:10:211
7193991714,2cyclictest28607-21ntp_states21:40:201
7193991714,2cyclictest2519-21fschecks_count20:55:161
7193991714,2cyclictest22833-21awk19:35:191
7193991714,2cyclictest19084-21grep21:25:141
7193991714,2cyclictest14742-21apt-config20:20:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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