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2022-06-25 - 03:17

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 Sat Jun 25, 2022 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
314202298268,19sleep20-21swapper/219:08:342
314562288261,18sleep10-21swapper/119:09:011
314232273241,21sleep00-21swapper/019:08:360
313642256229,17sleep30-21swapper/319:07:503
287602660,0sleep00-21swapper/021:36:260
268212580,0sleep10-21swapper/100:13:321
325132570,0sleep10-21swapper/121:39:521
253102570,0sleep10-21swapper/121:56:261
259232550,1sleep0131rcuc/000:12:350
113592550,0sleep10-21swapper/122:31:301
86812210,0sleep20-21swapper/220:40:142
146282180,0sleep10-21swapper/100:04:031
136262180,0sleep30-21swapper/320:50:163
217982150,0sleep20-21swapper/222:16:212
31647991312,1cyclictest28-21ksoftirqd/200:00:012
3164799118,2cyclictest28-21ksoftirqd/222:35:012
31647991110,1cyclictest28-21ksoftirqd/200:05:002
3164799109,1cyclictest28-21ksoftirqd/221:55:012
3164799109,1cyclictest28-21ksoftirqd/221:20:002
3164799108,1cyclictest271rcuc/200:39:592
3164799102,6cyclictest28-21ksoftirqd/200:25:202
3164799101,2cyclictest28-21ksoftirqd/222:55:112
3164799100,2cyclictest77-21kswapd022:50:112
316479998,1cyclictest28-21ksoftirqd/222:10:012
316479998,1cyclictest28-21ksoftirqd/220:55:002
316479997,2cyclictest28-21ksoftirqd/219:25:012
316479992,5cyclictest271rcuc/221:25:122
316519984,3cyclictest3051-21cron20:30:013
316519983,3cyclictest283-21systemd-journal21:22:283
316479987,1cyclictest28-21ksoftirqd/223:20:002
316479987,1cyclictest28-21ksoftirqd/223:10:002
316479987,1cyclictest28-21ksoftirqd/222:25:012
316479987,1cyclictest28-21ksoftirqd/220:30:022
316479987,1cyclictest28-21ksoftirqd/200:35:002
316479986,2cyclictest28-21ksoftirqd/223:05:002
316479986,2cyclictest28-21ksoftirqd/220:20:012
316479986,1cyclictest28-21ksoftirqd/223:25:002
316479986,1cyclictest28-21ksoftirqd/219:15:012
316479986,1cyclictest271rcuc/223:45:122
316479986,1cyclictest271rcuc/221:00:002
316479984,3cyclictest508-21dbus-daemon23:31:452
316479984,3cyclictest283-21systemd-journal19:14:522
316479984,3cyclictest11736-21in:imuxsock19:56:342
316479984,1cyclictest28-21ksoftirqd/223:11:392
316479983,4cyclictest28-21ksoftirqd/222:10:112
316479982,4cyclictest28-21ksoftirqd/219:50:012
316479982,4cyclictest28-21ksoftirqd/200:05:182
316479982,4cyclictest13498-21/usr/sbin/munin23:40:142
316479982,3cyclictest10865-21ls21:25:002
316479982,1cyclictest141rcu_preempt00:20:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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