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2022-08-13 - 17:49

x86 Intel Core i3-8145UE @2200 MHz, Linux 5.10.27-rt36 (Profile)

Latency plot of system in rack #e, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 50 highest latencies:
System rackeslot5.osadl.org (updated Sat Aug 13, 2022 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3005699320,31cyclictest296-21systemd-journal10:30:003
3005699300,29cyclictest11696-21munin-run09:50:013
3005699300,29cyclictest0-21swapper/307:33:123
3005199300,29cyclictest24041-21munin-run10:15:002
3005199300,29cyclictest0-21swapper/207:48:122
30047993028,1cyclictest2664-21cron07:20:011
30047993028,1cyclictest0-21swapper/111:20:001
3004799300,29cyclictest13952-21apt-get11:03:181
3004799300,1cyclictest23217-21apt-get08:03:171
3004299300,29cyclictest10604-21apt-get12:03:180
3005699290,28cyclictest30465-21apt-get08:18:133
3005699290,0cyclictest0-21swapper/307:48:123
3005199290,28cyclictest10395-21apt-get08:43:132
3005199290,28cyclictest0-21swapper/212:13:152
3005199290,1cyclictest9044-21apt-get10:53:112
3005199290,1cyclictest4790-21apt-get08:30:012
30047992929,0cyclictest0-21swapper/109:13:181
30047992928,0cyclictest23619-21apt-get11:23:111
3004799290,28cyclictest20033-21perf07:55:011
3004799290,0cyclictest0-21swapper/107:23:211
30042992927,1cyclictest544-21dbus-daemon11:35:010
3004299290,29cyclictest0-21swapper/011:28:130
3004299290,0cyclictest0-21swapper/008:13:130
30056992828,0cyclictest0-21swapper/309:28:163
30056992828,0cyclictest0-21swapper/308:33:173
30056992828,0cyclictest0-21swapper/308:08:183
30056992827,0cyclictest20003-21apt-get07:55:023
3005699280,28cyclictest0-21swapper/309:58:163
3005699280,0cyclictest0-21swapper/311:13:113
3005699280,0cyclictest0-21swapper/310:35:013
30051992828,0cyclictest4792-21perf08:30:002
30051992828,0cyclictest0-21swapper/207:38:102
3005199280,28cyclictest0-21swapper/211:53:132
3005199280,28cyclictest0-21swapper/207:28:182
3005199280,0cyclictest18772-21apt-get11:13:112
30047992828,0cyclictest0-21swapper/108:48:141
3004799280,0cyclictest0-21swapper/110:08:171
30042992828,0cyclictest0-21swapper/010:28:120
30042992828,0cyclictest0-21swapper/010:13:160
30042992828,0cyclictest0-21swapper/009:13:180
30042992828,0cyclictest0-21swapper/007:58:130
30042992826,1cyclictest544-21dbus-daemon08:30:000
30056992727,0cyclictest30876-21apt-get11:38:173
30056992727,0cyclictest0-21swapper/312:08:183
30056992727,0cyclictest0-21swapper/309:38:153
30056992727,0cyclictest0-21swapper/308:45:023
30051992727,0cyclictest25225-21apt-get09:13:182
30051992727,0cyclictest0-21swapper/208:03:162
30051992727,0cyclictest0-21swapper/207:23:212
30047992727,0cyclictest5704-21apt-get11:53:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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