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2022-01-26 - 11:52

Intel(R) Core(TM) i5-8365UE CPU @ 1.60GHz, 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 Jan 26, 2022 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207772300271,19sleep00-21swapper/019:08:330
206262300273,17sleep20-21swapper/219:06:382
206102288257,20sleep10-21swapper/119:06:251
206322268235,21sleep30-21swapper/319:06:433
119162600,0sleep30-21swapper/322:09:393
181312590,0sleep20-21swapper/223:31:542
118172560,0sleep10-21swapper/122:29:101
73402550,0sleep27341-21sh22:25:392
127542550,0sleep10-21swapper/123:09:161
86482190,0sleep00-21swapper/000:25:220
215422150,0sleep20-21swapper/221:35:222
204112150,1sleep10-21swapper/122:34:351
191492140,0sleep00-21swapper/021:34:160
154382140,0sleep20-21swapper/221:51:082
2098399109,1cyclictest12-21ksoftirqd/000:00:000
209949994,3cyclictest283-21systemd-journal22:56:273
209949984,2cyclictest283-21systemd-journal22:27:583
209949983,3cyclictest283-21systemd-journal23:26:483
209949983,3cyclictest283-21systemd-journal22:16:333
209929983,3cyclictest31045-21turbostat00:20:002
209879985,2cyclictest22-21ksoftirqd/119:15:001
209879982,3cyclictest22090-21perf23:35:001
209879981,2cyclictest283-21systemd-journal00:20:001
209839983,2cyclictest3237-21ssh22:23:500
21212270,1sleep3331rcuc/322:35:013
209949976,1cyclictest20014-21sh23:13:333
209949976,1cyclictest0-21swapper/323:41:123
209949974,2cyclictest4054-21http20:55:003
209949973,4cyclictest514-21in:imuxsock21:32:543
209949973,3cyclictest508-21dbus-daemon23:35:003
209949973,3cyclictest508-21dbus-daemon20:40:013
209949973,3cyclictest30438-21ntpq22:00:363
209949973,2cyclictest283-21systemd-journal20:16:563
209949972,4cyclictest0-21swapper/321:35:173
209949970,7cyclictest0-21swapper/323:22:423
209929973,3cyclictest283-21systemd-journal23:30:002
209929973,3cyclictest283-21systemd-journal20:06:222
209879975,1cyclictest20774-21cron20:20:001
209879973,3cyclictest6192-21cron00:05:001
209879973,3cyclictest559-21gdbus20:10:001
209879973,3cyclictest283-21systemd-journal00:22:501
209879973,1cyclictest0-21swapper/122:45:201
209879972,3cyclictest4982-21dump-pmu-power22:45:011
209879972,2cyclictest283-21systemd-journal20:27:491
209879972,1cyclictest20574-21awk22:15:011
209879970,7cyclictest2383-1kworker/u9:222:18:081
209839975,1cyclictest131rcuc/021:20:160
209839975,1cyclictest12-21ksoftirqd/000:30:020
209839974,2cyclictest25498-21ssh21:37:500
209839973,3cyclictest665-21snmpd19:13:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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