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2023-02-06 - 14:16

x86 Intel Core i7-3770K @3500 MHz, Linux 5.4.102-rt53 (Profile)

Latency plot of system in rack #c, slot #6
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 -h200 -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 rackcslot6.osadl.org (updated Mon Feb 06, 2023 00:46:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
148288123160,4sleep121-21ksoftirqd/119:05:261
14816722136117,17sleep40-21swapper/419:05:144
14818412123117,3sleep60-21swapper/619:05:166
15987982910,1sleep656-21ksoftirqd/621:51:136
148353428769,12sleep50-21swapper/519:09:405
148328428465,12sleep30-21swapper/319:06:093
148326028359,12sleep70-21swapper/719:05:497
1483731998011,44cyclictest21-21ksoftirqd/122:47:081
1483731997916,39cyclictest0-21swapper/100:17:081
1483731997915,35cyclictest0-21swapper/121:02:081
148343427956,12sleep00-21swapper/019:08:150
16708102780,0sleep121-21ksoftirqd/122:56:121
148325527856,11sleep20-21swapper/219:05:432
1483731997714,38cyclictest0-21swapper/119:32:081
17181962710,0sleep40-21swapper/423:40:134
15134372670,0sleep50-21swapper/520:00:185
1483746996616,39cyclictest0-21swapper/321:27:083
1483772996516,38cyclictest0-21swapper/622:57:076
1483772996416,38cyclictest0-21swapper/622:02:076
1483772996316,40cyclictest0-21swapper/622:37:086
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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