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2022-08-20 - 04:54

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 Sat Aug 20, 2022 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1835799367365,2cyclictest0-21swapper/120:36:021
1835799364363,1cyclictest5072-21kworker/1:119:59:021
1835799359358,1cyclictest24317-21kworker/1:023:11:021
1835199301299,1cyclictest20271-21gnome-shell19:21:590
1835799291288,2cyclictest20271-21gnome-shell19:26:591
18363992880,283cyclictest0-21swapper/221:28:592
1835199285285,0cyclictest1641-21kworker/0:223:48:020
1835199281279,1cyclictest20271-21gnome-shell23:35:590
1835199279277,1cyclictest20271-21gnome-shell19:17:590
1836399278273,4cyclictest0-21swapper/221:53:592
1836399277275,2cyclictest12204-21kworker/2:123:48:022
1835799275272,2cyclictest20271-21gnome-shell22:30:591
1835799274271,2cyclictest20271-21gnome-shell21:01:591
1835799274269,4cyclictest0-21swapper/119:13:591
1835199274272,1cyclictest20271-21gnome-shell23:13:590
1835199274271,2cyclictest20271-21gnome-shell20:15:590
1835799273270,2cyclictest20271-21gnome-shell23:16:591
1835199272271,1cyclictest1641-21kworker/0:223:16:010
1835199270270,0cyclictest8244-21kworker/0:121:40:020
1836399268266,1cyclictest20271-21gnome-shell22:22:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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