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2022-05-28 - 13:37

x86 Intel Celeron N3350 @1100 MHz, Linux 5.15.32-rt39 (Profile)

Latency plot of system in rack #6, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 26416 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -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 rack6slot4.osadl.org (updated Sat May 28, 2022 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
347899342339,2cyclictest0-21swapper/021:58:100
347899337334,2cyclictest16676-21kworker/0:223:36:390
3478993350,1cyclictest0-21swapper/018:42:480
347899334331,2cyclictest8100-21kworker/0:123:58:560
347899334331,2cyclictest29764-21kworker/0:123:26:060
347899334331,2cyclictest0-21swapper/022:02:000
347899333330,2cyclictest11568-21kworker/0:120:49:280
347899332329,2cyclictest26216-21kworker/0:123:45:560
347899331329,1cyclictest0-21swapper/021:09:540
347899331328,2cyclictest10746-21kworker/0:222:50:090
3478993310,329cyclictest0-21swapper/021:35:350
3478993310,1cyclictest0-21swapper/019:32:060
347899330328,1cyclictest0-21swapper/019:40:360
347899330327,2cyclictest29764-21kworker/0:123:08:490
3478993300,328cyclictest0-21swapper/019:37:370
347899327324,2cyclictest0-21swapper/019:09:330
347899326323,2cyclictest0-21swapper/022:47:240
3478993260,1cyclictest0-21swapper/021:19:280
347899325323,1cyclictest0-21swapper/023:19:380
347899325322,2cyclictest21941-21kworker/0:119:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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