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2023-06-06 - 11:38

x86 Intel Core i7-X990 @3467 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #c, 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 rackcslot1.osadl.org (updated Tue Jun 06, 2023 00:48:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3907991060,96rtkit-daemon0-21swapper/519:05:067
2452527764,7sleep10-21swapper/119:06:011
2385627765,6sleep100-21swapper/1019:05:222
2478127654,6sleep30-21swapper/319:09:405
2474827465,6sleep110-21swapper/1119:09:113
2381427360,6sleep90-21swapper/919:05:2111
2474326755,8sleep60-21swapper/619:09:078
2450226656,7sleep40-21swapper/419:05:396
267092610,1sleep70-21swapper/719:10:189
259692610,1sleep60-21swapper/622:40:208
2455226152,6sleep20-21swapper/219:06:264
2464025950,6sleep00-21swapper/019:07:360
2475725848,7sleep70-21swapper/719:09:199
144452580,0sleep60-21swapper/619:40:348
2454525646,7sleep80-21swapper/819:06:2010
194282560,1sleep90-21swapper/900:10:3411
194282560,1sleep90-21swapper/900:10:3311
194772530,1sleep10-21swapper/100:11:021
194772530,1sleep10-21swapper/100:11:011
292152440,1sleep50-21swapper/500:28:447
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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