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2025-11-23 - 01:28
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack9slot2.osadl.org (updated Sat Nov 22, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
57692313276,24sleep00-21swapper/00
60402311274,24sleep20-21swapper/22
6231992981,2cyclictest27894-21idleruntime-cro1
6231992981,2cyclictest27894-21idleruntime-cro1
60492263227,24sleep10-21swapper/11
60662246210,23sleep30-21swapper/33
622799149142,5cyclictest27893-21tr0
622799149142,5cyclictest27893-21tr0
623699136129,5cyclictest27880-21perf2
623699136129,5cyclictest27880-21perf2
62399910298,2cyclictest27879-21idleruntime-cro3
62399910298,2cyclictest27879-21idleruntime-cro3
95622670,1sleep19565-21idleruntime1
307902580,2sleep10-21swapper/11
83752560,4sleep2623699cyclictest2
36892430,2sleep30-21swapper/33
36892430,2sleep30-21swapper/33
201992270,4sleep2623699cyclictest2
623699233,17cyclictest23889-21latency_hist2
623699233,17cyclictest13611-21cat2
6236992315,5cyclictest2082-21systemd-journal2
6236992315,4cyclictest505-21dbus-daemon2
622799238,12cyclictest12421-21readlink0
75352220,1sleep30-21swapper/33
623699224,17cyclictest15800-21awk2
623699223,17cyclictest8323-21latency_hist2
623699223,17cyclictest6291-21latency_hist2
623699223,17cyclictest19992-21cat2
623699223,17cyclictest17429-21awk2
623699222,15cyclictest9532-21apt-get2
6236992215,4cyclictest32322-21sh2
623699221,18cyclictest25523-21munin-run2
623699221,18cyclictest17817-21perf2
6227992217,3cyclictest21812-21grep0
6227992217,3cyclictest21812-21grep0
6227992215,4cyclictest2082-21systemd-journal0
6239992115,4cyclictest8941-21users3
6239992115,4cyclictest505-21dbus-daemon3
6239992115,4cyclictest27183-21cat3
6239992115,4cyclictest23878-21cut3
6239992115,4cyclictest19927-21cat3
6239992115,4cyclictest18101-21pmu-power3
6239992115,3cyclictest20531-21diskstats3
623699213,16cyclictest3304-21cat2
623699212,12cyclictest17671-21chrt2
6236992115,4cyclictest8234-21expr2
6236992115,4cyclictest11999-21awk2
623699211,3cyclictest4049-1kworker/2:0H2
623699211,3cyclictest27162-21munin-run2
6236992113,5cyclictest2082-21systemd-journal2
623699211,17cyclictest1134-21dump-pmu-power2
6227992116,3cyclictest24397-21kernelversion0
6227992115,4cyclictest4963-21seq0
6227992115,4cyclictest15677-21seq0
6227992115,3cyclictest1463-21aten2.4-expect0
146252210,1sleep10-21swapper/11
6239992016,2cyclictest2315-21idleruntime3
6239992015,3cyclictest31526-21proc_pri3
6239992015,3cyclictest14511-21pluginstate3
6239992015,3cyclictest14511-21pluginstate3
6239992015,3cyclictest14237-21cat3
6239992014,4cyclictest4677-21ntp_kernel_pll_3
6239992014,4cyclictest4296-21ntpq3
6239992014,4cyclictest1474-21cut3
6239992014,4cyclictest1425-21find3
6239992014,3cyclictest5730-21ls3
6239992014,3cyclictest11082-21find3
6239992013,4cyclictest26881-21expr3
6239992013,4cyclictest10537-21cat3
623699203,15cyclictest2082-21systemd-journal2
623699202,16cyclictest3146-21latency_hist2
6236992015,3cyclictest4233-21expr2
6236992015,3cyclictest28-21ksoftirqd/22
6236992015,3cyclictest22869-21latency_hist2
6236992015,3cyclictest22869-21latency_hist2
6236992015,3cyclictest12843-21ntp_states2
6236992015,2cyclictest292-21jbd2/mmcblk0p2-2
623699201,3cyclictest23149-21latency_hist2
6236992013,5cyclictest29988-21sed2
623699201,16cyclictest7233-21latency_hist2
623699201,16cyclictest29530-21apt-get2
6236992010,6cyclictest505-21dbus-daemon2
623699200,3cyclictest3959-21perf2
623699200,3cyclictest31919-21cron2
6231992015,3cyclictest32286-21gltestperf1
6231992015,3cyclictest19398-21seq1
6231992015,3cyclictest18406-21timerwakeupswit1
6231992014,4cyclictest9178-21cat1
6231992014,4cyclictest17217-21seq1
6231992014,4cyclictest16280-21ls1
6231992014,4cyclictest12308-21seq1
6231992013,4cyclictest3157-21sh1
622799209,5cyclictest321952chrt0
6227992015,3cyclictest25113-21seq0
6227992015,3cyclictest2274-21sed0
6227992014,4cyclictest2498-21ls0
6227992014,4cyclictest15122-21/usr/sbin/munin0
6227992014,4cyclictest15122-21/usr/sbin/munin0
6227992014,4cyclictest14046-21fw_packets0
6227992014,4cyclictest14046-21fw_packets0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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