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2026-04-14 - 20:52
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Tue Apr 14, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8587992624,1cyclictest8738-21mii-tool10:00:171
858699252,5cyclictest22298-21date07:35:010
8587992212,10cyclictest0-21swapper/111:54:481
858899210,5cyclictest24783-21cstates08:35:152
8588992017,2cyclictest20811-21ntp_kernel_pll_10:20:172
8588992013,6cyclictest843-21systemd-network09:01:122
858799202,17cyclictest2069-21systemd-udevd12:14:521
8587992010,0cyclictest0-21swapper/107:11:191
858699203,16cyclictest31822-21cstates12:35:150
858699203,16cyclictest0-21swapper/011:50:000
858699200,19cyclictest3185-21ntp_kernel_pll_09:50:180
858899193,1cyclictest0-21swapper/208:06:412
8588991914,3cyclictest13939-21latency_hist07:20:002
8588991914,1cyclictest0-21swapper/211:10:212
858699192,2cyclictest29418-21nfsd407:45:180
858699191,1cyclictest0-21swapper/008:55:150
858699190,18cyclictest0-21swapper/009:24:480
858899183,1cyclictest0-21swapper/208:50:012
858899182,15cyclictest28-21ksoftirqd/208:15:262
858899182,15cyclictest0-21swapper/209:27:302
8588991813,3cyclictest0-21swapper/209:37:152
8587991815,2cyclictest5852-21processes10:50:191
858699182,15cyclictest0-21swapper/011:05:160
8586991815,2cyclictest993-21dbus-daemon11:10:210
8586991815,2cyclictest24768-21trivial-rewrite07:38:450
8586991815,2cyclictest14547-21cut09:15:010
858699180,17cyclictest0-21swapper/009:19:030
8588991715,1cyclictest0-21swapper/211:00:132
8588991715,1cyclictest0-21swapper/209:10:182
8588991715,1cyclictest0-21swapper/208:10:162
8588991715,1cyclictest0-21swapper/207:35:192
8588991714,2cyclictest6681-21expr11:50:132
8588991714,2cyclictest5991-21mailstats10:50:202
8588991714,2cyclictest32022-21missed_timers10:40:192
8588991714,2cyclictest2597-21awk10:45:182
8588991714,2cyclictest20210-21cat07:30:142
8588991714,2cyclictest17173-21expr10:15:142
8588991714,2cyclictest15511-21kernelversion12:05:172
8588991714,2cyclictest0-21swapper/212:35:212
858899170,2cyclictest4035-21H222:10:212
858899170,2cyclictest32660-21ntp_kernel_pll_09:45:182
858899170,2cyclictest21276-21apt-config08:29:312
858899170,2cyclictest1981-21expr09:50:142
858899170,16cyclictest9312-21ntp_states10:00:192
858899170,16cyclictest571-21cpuspeed_turbos08:50:142
858899170,16cyclictest3991-21H222:10:212
858899170,16cyclictest29911-21expr11:35:162
858899170,16cyclictest26490-21latency_hist11:30:002
858899170,16cyclictest24861-21/usr/sbin/munin10:30:122
858899170,16cyclictest23704-21sendmail_mailqu10:25:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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