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2021-10-16 - 14:09

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 100 highest latencies:
System rackaslot8.osadl.org (updated Sat Oct 16, 2021 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
45992300271,19sleep00-21swapper/019:06:090
46192278247,20sleep20-21swapper/219:06:242
47412273241,21sleep30-21swapper/319:07:573
47542271211,19sleep10-21swapper/119:08:071
71472620,0sleep20-21swapper/221:56:022
32792620,0sleep30-21swapper/322:33:033
163582560,0sleep00-21swapper/022:21:060
46172540,0sleep20-21swapper/222:14:482
219292540,0sleep00-21swapper/022:44:450
216532530,0sleep10-21swapper/100:07:421
58782190,0sleep30-21swapper/323:14:153
219462140,0sleep321949-21unixbench_multi20:55:243
50262120,0sleep10-21swapper/123:32:551
34752120,1sleep03476-21latency_hist21:35:020
313092120,0sleep30-21swapper/323:52:113
50209990,4cyclictest283-21systemd-journal00:07:543
50119990,8cyclictest16844-21ssh23:40:111
50089996,2cyclictest10868-21sh23:59:510
9548280,0sleep00-21swapper/021:18:550
50209984,3cyclictest508-21dbus-daemon20:10:003
50209983,3cyclictest283-21systemd-journal20:20:003
50169985,2cyclictest665-21snmpd21:32:332
50169984,3cyclictest283-21systemd-journal00:28:352
50169983,3cyclictest283-21systemd-journal19:11:382
50119983,2cyclictest283-21systemd-journal22:16:291
50119980,7cyclictest22887-21sh21:26:251
13401280,0sleep30-21swapper/323:37:443
10425280,0sleep30-21swapper/323:59:323
50209974,2cyclictest665-21snmpd00:25:383
50209973,3cyclictest665-21snmpd19:49:483
50209973,3cyclictest665-21snmpd00:03:553
50209973,3cyclictest283-21systemd-journal22:17:523
50209973,3cyclictest283-21systemd-journal21:27:123
50209973,3cyclictest283-21systemd-journal19:51:353
50209973,2cyclictest283-21systemd-journal21:23:323
50209971,2cyclictest283-21systemd-journal21:30:503
50209970,3cyclictest66550snmpd21:54:573
50169976,1cyclictest26920-21diskmemload23:14:152
50169975,1cyclictest24769-21ssh22:06:392
50169974,2cyclictest283-21systemd-journal19:18:352
50169973,3cyclictest665-21snmpd21:38:152
50169973,3cyclictest665-21snmpd19:34:472
50169973,3cyclictest283-21systemd-journal22:05:012
50169973,3cyclictest283-21systemd-journal20:16:592
50169973,3cyclictest0-21swapper/223:17:012
50169973,2cyclictest283-21systemd-journal00:34:392
50169972,3cyclictest283-21systemd-journal23:23:292
50169972,3cyclictest283-21systemd-journal22:50:522
50169972,3cyclictest283-21systemd-journal22:24:102
50169970,1cyclictest26920-21diskmemload23:56:282
50119974,2cyclictest283-21systemd-journal23:52:511
50119973,3cyclictest665-21snmpd19:49:121
50119973,2cyclictest283-21systemd-journal00:21:481
50119972,3cyclictest283-21systemd-journal19:45:011
50119970,7cyclictest27122-21ssh22:27:471
50089975,2cyclictest12-21ksoftirqd/019:55:000
50089973,3cyclictest508-21dbus-daemon21:45:490
50089973,3cyclictest283-21systemd-journal21:01:140
50089973,3cyclictest283-21systemd-journal20:41:110
50089973,3cyclictest283-21systemd-journal20:09:030
50089973,3cyclictest283-21systemd-journal00:24:450
50089973,1cyclictest0-21swapper/023:35:190
50089972,3cyclictest283-21systemd-journal23:20:030
50089971,4cyclictest12229-21apt-get22:00:000
50089970,1cyclictest29886-21ntpq21:50:180
50089970,1cyclictest0-21swapper/021:42:150
22578270,0sleep30-21swapper/323:04:543
10195270,2sleep012-21ksoftirqd/021:38:540
50209966,0cyclictest0-21swapper/323:05:243
50209966,0cyclictest0-21swapper/322:38:553
50209963,2cyclictest4124-21sshd00:18:063
50209963,2cyclictest28324-21latency_hist21:50:013
50209963,2cyclictest283-21systemd-journal23:20:013
50209963,2cyclictest27210-21sh21:10:043
50209963,2cyclictest24840-21if_enp4s023:25:233
50209963,2cyclictest21808-21tune2fs22:05:143
50209963,2cyclictest2045-21rm22:51:383
50209963,2cyclictest12729-21gdbus22:00:013
50209963,2cyclictest11560-21rm21:39:563
50209962,3cyclictest665-21snmpd23:20:033
50209962,3cyclictest665-21snmpd22:40:073
50209962,3cyclictest665-21snmpd22:21:413
50209962,3cyclictest665-21snmpd21:08:413
50209962,3cyclictest665-21snmpd21:03:053
50209962,3cyclictest665-21snmpd20:35:273
50209962,3cyclictest665-21snmpd19:35:513
50209962,3cyclictest665-21snmpd19:22:193
50209962,3cyclictest665-21snmpd00:37:323
50209962,3cyclictest6062-21awk21:55:273
50209962,3cyclictest4932-21cat21:15:293
50209962,3cyclictest283-21systemd-journal22:26:413
50209962,3cyclictest23675-21cat22:45:223
50209962,3cyclictest16709-21cat20:45:183
50209962,3cyclictest1637-21cut20:10:323
50209962,3cyclictest0-21swapper/300:34:143
50209962,1cyclictest0-21swapper/323:31:423
50209962,1cyclictest0-21swapper/321:40:353
50209962,1cyclictest0-21swapper/300:21:163
50209961,2cyclictest27867-21ssh00:11:073
50209960,6cyclictest0-21swapper/322:14:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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