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2023-02-06 - 13:19

x86 Intel Core i5-7300U @2600 MHz, Linux 5.0.21-rt16 (Profile)

Latency plot of system in rack #1, slot #1
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 rack1slot1.osadl.org (updated Mon Feb 06, 2023 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
42662226159,54sleep30-21swapper/319:07:473
41192208137,55sleep00-21swapper/019:05:510
41932199160,25sleep20-21swapper/219:06:502
42962184151,21sleep10-21swapper/119:08:101
87192810,0sleep10-21swapper/123:40:581
97292680,1sleep3818-21lldpd23:09:153
454399200,19cyclictest0-21swapper/122:35:121
455099160,13cyclictest8308-21sed23:40:232
4537991610,6cyclictest0-21swapper/023:00:210
4537991513,1cyclictest818-21lldpd23:45:140
455699140,13cyclictest17937-21awk23:50:213
4550991412,1cyclictest818-21lldpd23:30:192
4550991412,1cyclictest0-21swapper/223:05:222
455099140,13cyclictest793-21snmpd22:35:202
455099140,13cyclictest26037-21diskmemload23:50:182
454399140,13cyclictest0-21swapper/100:00:281
4537991412,1cyclictest0-21swapper/022:40:210
453799141,0cyclictest9-21ksoftirqd/019:18:350
453799140,13cyclictest793-21snmpd22:25:260
453799140,13cyclictest23730-21sed00:30:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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