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2023-02-06 - 13:04

x86 Intel Xeon E3-1220L V2 @2300 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of system in rack #0, slot #1
Data to construct the above plot have been generated using the RT test utility cyclictest.
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 20 highest latencies:
System rack0slot1.osadl.org (updated Mon Feb 06, 2023 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1869521220,0sleep00-21swapper/019:14:290
1869521220,0sleep00-21swapper/019:14:290
2357621110,0sleep60-21swapper/623:29:296
58769910097,2cyclictest70-21ksoftirqd/600:07:496
214121000,1sleep52113-21starman21:06:265
179062860,1sleep232-21rcuc/221:42:302
179062860,1sleep232-21rcuc/221:42:302
179062860,1sleep232-21rcuc/221:42:302
5858998276,4cyclictest52-21ksoftirqd/421:51:564
116142770,0sleep10-21swapper/121:09:191
5836997673,2cyclictest25-21ksoftirqd/121:51:561
129512750,1sleep012943-21starman21:17:430
5885997472,1cyclictest79-21ksoftirqd/721:51:567
262532740,1sleep526246-21starman21:04:425
55362730,0sleep30-21swapper/320:00:153
275072720,1sleep627495-21sshd22:50:366
29622700,0sleep10-21swapper/122:07:281
234152680,1sleep343-21ksoftirqd/321:36:543
5876996561,2cyclictest70-21ksoftirqd/621:55:366
5842996360,2cyclictest34-21ksoftirqd/223:28:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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