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2022-12-08 - 20:44

x86 Intel Xeon E3-1220 @3100 MHz, Linux 4.19.1-rt3 (Profile)

Latency plot of system in rack #2, slot #0
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
Characteristics of the 20 highest latencies:
System rack2slot0.osadl.org (updated Thu Dec 08, 2022 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
210002610,1sleep0614-21dbus-daemon10:04:140
320402540,0sleep30-21swapper/311:19:063
88742520,0sleep20-21swapper/211:21:102
86722520,1sleep38669-21sshd11:21:073
239562520,0sleep30-21swapper/309:48:553
21032440,2sleep31133899cyclictest09:51:193
1089823927,7sleep00-21swapper/007:06:040
314252370,0sleep0101ktimersoftd/011:43:020
1094923422,7sleep20-21swapper/207:06:422
1093123315,7sleep10-21swapper/107:06:291
1105922917,7sleep30-21swapper/307:08:073
1133399180,16cyclictest19939-21sadc09:40:002
9452160,0sleep30-21swapper/311:43:333
180652140,0sleep10-21swapper/110:59:381
11333991414,0cyclictest13292-21kworker/2:007:25:552
211792130,0sleep00-21swapper/012:36:500
190832130,0sleep30-21swapper/309:39:463
1133899130,11cyclictest614-21dbus-daemon12:04:513
271502120,0sleep00-21swapper/007:45:190
1132799120,11cyclictest27103-21sshd09:49:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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