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2023-02-08 - 04:23

x86 Intel Core i5-8265UE @1600 MHz, Linux 5.10.41-rt42 (Profile)

Latency plot of system in rack #a, slot #8
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 rackaslot8.osadl.org (updated Wed Feb 08, 2023 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26202294265,18sleep20-21swapper/219:05:062
44772282256,17sleep10-21swapper/119:08:261
43642278249,19sleep00-21swapper/019:06:570
44492257224,21sleep30-21swapper/319:08:053
264132640,0sleep10-21swapper/119:55:241
128352620,0sleep20-21swapper/223:12:012
216392590,0sleep30-21swapper/322:55:573
183592570,0sleep30-21swapper/300:22:333
10212560,0sleep00-21swapper/021:59:070
207752220,0sleep00-21swapper/023:17:250
173722210,0sleep10-21swapper/123:58:251
148282190,1sleep30-21swapper/320:40:223
110822180,0sleep30-21swapper/323:32:283
47099997,1cyclictest34-21ksoftirqd/321:40:023
47059994,3cyclictest31158-21munin-run23:25:002
47049994,3cyclictest283-21systemd-journal23:54:161
47019990,8cyclictest5069-21ssh23:06:490
47099983,3cyclictest283-21systemd-journal23:02:183
47099980,7cyclictest135812chrt22:29:213
47059984,3cyclictest19116-21gdbus23:05:012
47059983,3cyclictest283-21systemd-journal19:38:082
47059980,1cyclictest18339-21ssh23:59:182
47019986,1cyclictest23049-21ssh21:51:170
47019985,2cyclictest508-21dbus-daemon23:20:040
47019985,2cyclictest10202-21ssh23:31:430
47019980,7cyclictest17073-21ssh21:47:260
47019980,5cyclictest18691-21munin-run19:40:000
47099975,2cyclictest34-21ksoftirqd/321:50:013
47099974,2cyclictest30611-21systemctl22:40:233
47099973,3cyclictest963-21sshd23:25:303
47099973,3cyclictest5698-21snmpd21:42:333
47099973,3cyclictest508-21dbus-daemon21:14:293
47099973,3cyclictest1-21systemd21:07:493
47099971,5cyclictest25373-21apt-get19:55:023
47099970,3cyclictest283-21systemd-journal22:08:193
47059974,2cyclictest28237-21df00:30:172
47059974,2cyclictest18408-21ntpq22:10:232
47059973,3cyclictest5698-21snmpd21:55:322
47059973,3cyclictest508-21dbus-daemon22:27:552
47059973,3cyclictest508-21dbus-daemon20:59:592
47059973,3cyclictest283-21systemd-journal19:43:092
47059972,3cyclictest283-21systemd-journal23:37:092
47059972,3cyclictest283-21systemd-journal23:05:522
47059972,3cyclictest283-21systemd-journal20:52:472
47059972,3cyclictest283-21systemd-journal20:48:302
47059970,4cyclictest13924-21munin-plugin-st23:35:002
47049974,2cyclictest283-21systemd-journal21:34:591
47049973,3cyclictest694-21apt-get00:10:151
47049970,3cyclictest314952diskmemload00:08:521
47019976,1cyclictest0-21swapper/022:58:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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