You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2022-11-27 - 16:42

x86 Intel Core i7-8565U @1800 MHz, Linux 5.4.17-rt9 (Profile)

Latency plot of system in rack #d, 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 -n -p99 -i200 -h400 -a0-2 -t3 -q done
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 rackdslot0.osadl.org (updated Sun Nov 27, 2022 12:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1287199465460,2cyclictest0-21swapper/109:51:021
12871994600,459cyclictest0-21swapper/107:43:021
1287199456454,1cyclictest0-21swapper/111:00:011
1287199451450,1cyclictest7744-21kworker/1:112:04:011
1287199446444,0cyclictest0-21swapper/110:28:021
1287199443443,0cyclictest0-21swapper/110:55:021
1287999424422,2cyclictest0-21swapper/209:24:022
1287999423418,3cyclictest0-21swapper/210:28:022
1287999422421,0cyclictest0-21swapper/207:43:022
1287999422419,2cyclictest0-21swapper/211:59:022
1287999421419,2cyclictest0-21swapper/209:51:022
1287999421417,2cyclictest0-21swapper/210:55:022
1287999411410,1cyclictest13570-21kworker/2:111:00:012
1286699403401,2cyclictest0-21swapper/009:24:020
1286699400400,0cyclictest0-21swapper/007:43:020
1286699400398,2cyclictest0-21swapper/008:20:020
1286699399398,1cyclictest22943-21kworker/0:211:59:020
1286699398396,1cyclictest5227-21kworker/0:007:48:010
12879993110,310cyclictest0-21swapper/210:18:592
12871993100,309cyclictest0-21swapper/110:49:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional