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2026-08-15 - 20:36
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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 Sat Aug 15, 2026 12:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26063992414,9cyclictest0-21swapper/209:35:232
2606299225,16cyclictest29048-21perf09:10:021
2606299220,18cyclictest0-21swapper/111:47:371
2606199220,21cyclictest843-21systemd-network08:15:050
26062992111,0cyclictest0-21swapper/110:48:481
2606199210,20cyclictest20401-21kernelversion09:50:170
2606199210,18cyclictest0-21swapper/008:00:420
2606399204,15cyclictest0-21swapper/210:30:172
26063992016,3cyclictest0-21swapper/209:02:082
2606199204,15cyclictest0-21swapper/007:39:410
2606199203,13cyclictest0-21swapper/010:05:510
26061992017,1cyclictest0-21swapper/008:44:280
26061992014,5cyclictest0-21swapper/009:40:000
2606199201,3cyclictest19553-21nfsd408:50:180
2606199200,5cyclictest0-21swapper/010:52:180
2606399190,4cyclictest14880-21smartctl12:30:202
2606299193,15cyclictest0-21swapper/107:20:161
2606299192,2cyclictest32726-21cat12:05:201
2606299192,16cyclictest4404-21sed11:15:201
26062991917,1cyclictest0-21swapper/111:01:321
26062991914,4cyclictest399-20systemd-journal12:22:291
26062991912,2cyclictest15126-21cron08:45:011
26061991917,1cyclictest0-21swapper/008:55:090
26061991917,1cyclictest0-21swapper/008:55:080
26061991916,2cyclictest27868-21ntp_kernel_err11:00:170
2606399182,2cyclictest14550-21snapd07:42:592
2606399182,2cyclictest14550-21snapd07:42:582
26063991816,1cyclictest0-21swapper/208:01:532
26063991815,2cyclictest21158-21cut08:55:142
26063991815,2cyclictest21158-21cut08:55:142
26063991814,3cyclictest23434-21iwlist09:55:172
26063991814,3cyclictest0-21swapper/210:15:192
2606399181,16cyclictest32070-21nfsd412:05:172
2606399180,3cyclictest1351-21lxd08:12:442
2606399180,17cyclictest0-21swapper/211:35:142
2606399180,17cyclictest0-21swapper/208:40:222
2606399180,15cyclictest0-21swapper/212:29:152
2606399180,15cyclictest0-21swapper/208:50:142
26062991816,1cyclictest0-21swapper/109:45:141
26062991814,3cyclictest8390-21netstat08:30:191
26062991814,3cyclictest8390-21netstat08:30:181
2606299181,16cyclictest426-21systemd-udevd12:30:511
26061991815,2cyclictest9042-21wc10:25:220
26061991814,3cyclictest7925-21turbostat.cron11:25:000
26061991813,4cyclictest0-21swapper/007:43:010
26061991813,4cyclictest0-21swapper/007:43:000
2606199181,2cyclictest0-21swapper/010:40:170
2606199181,16cyclictest32687-21switchtime10:10:200
2606199181,16cyclictest22589-21chrt09:55:030
2606199180,16cyclictest6542-21nfsd407:30:180
26063991715,1cyclictest0-21swapper/208:05:142
26063991715,1cyclictest0-21swapper/208:05:142
26063991714,2cyclictest9952-21timerwakeupswit07:35:222
26063991714,2cyclictest9289-21cat09:30:172
26063991714,2cyclictest4902-21cat07:30:022
26063991714,2cyclictest3874-21run-parts08:25:012
26063991714,2cyclictest31578-21/usr/sbin/munin10:10:142
26063991714,2cyclictest30019-21users12:00:222
26063991714,2cyclictest27033-21fschecks_time07:10:152
26063991714,2cyclictest18664-21expr10:45:142
26063991714,2cyclictest15740-21cpuspeed_turbos10:40:132
26063991714,2cyclictest14495-21snapd08:48:002
26063991714,2cyclictest10489-21df08:35:152
2606399171,15cyclictest24037-21cat10:55:132
2606399171,15cyclictest0-21swapper/209:20:172
2606399170,2cyclictest8577-21ntp_states08:30:202
2606399170,2cyclictest8577-21ntp_states08:30:192
2606399170,2cyclictest656-21latency11:10:172
2606399170,2cyclictest5756-21/usr/sbin/munin12:15:162
2606399170,2cyclictest4727-21latency_hist12:15:012
2606399170,2cyclictest29683-21expr09:10:142
2606399170,2cyclictest28004-21lxd11:28:452
2606399170,2cyclictest26616-21tlsmgr07:15:092
2606399170,2cyclictest24937-21apache_volume11:55:122
2606399170,2cyclictest22410-21cat11:50:142
2606399170,2cyclictest20783-21expr09:50:182
2606399170,2cyclictest19453-21egrep11:45:132
2606399170,2cyclictest14724-21fschecks_time09:40:162
2606399170,2cyclictest13671-21cut11:35:002
2606399170,16cyclictest679-21/usr/sbin/munin09:15:172
2606399170,16cyclictest5875-21cut09:25:152
2606399170,16cyclictest5066-21df10:20:152
2606399170,16cyclictest31837-21/usr/sbin/munin07:20:192
2606399170,16cyclictest27917-21cat10:05:002
2606399170,16cyclictest27212-21grep09:05:142
2606399170,16cyclictest19595-21cat07:55:132
2606399170,16cyclictest15324-21latency_hist10:40:012
2606399170,16cyclictest13664-21/usr/sbin/munin07:45:162
2606399170,16cyclictest10000-21python312:25:002
26062991715,1cyclictest0-21swapper/109:11:031
26062991714,2cyclictest7733-21cstates10:25:131
26062991714,2cyclictest4468-21/usr/sbin/munin10:20:151
26062991714,2cyclictest399-20systemd-journal08:40:021
26062991714,2cyclictest24144-21expr10:55:131
26062991714,2cyclictest21035-21grep09:50:211
26062991714,2cyclictest17602-21cut07:50:181
26062991714,2cyclictest17089-21pzem_power08:45:211
26062991714,2cyclictest15399-21ntp_kernel_err09:40:201
26062991714,2cyclictest15017-21nfsd411:35:181
26062991714,2cyclictest0-21swapper/108:55:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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