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2023-05-28 - 07:55

x86 Intel Celeron G1620 @2700 MHz, Linux 5.4.17-rt9 (Profile)

Latency plot of system in rack #9, slot #5
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack9slot5.osadl.org (updated Sun May 28, 2023 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318252890,0sleep031823-21x2gosqlitewrapp19:04:020
24552680,0sleep10-21swapper/122:03:241
324302490,0sleep10-21swapper/123:33:061
284932460,1sleep128491-21tune2fs21:36:211
160252420,0sleep016026-21x2gopath21:50:510
76542400,3sleep1422799cyclictest20:58:511
249322315,4sleep10-21swapper/118:21:471
38392196,10sleep00-21swapper/018:25:310
264599160,1rtkit-daemon2644-21rtkit-daemon22:31:000
422699150,1cyclictest10236-21x2gosqlitewrapp18:33:240
422699150,14cyclictest28156-21x2gosqlitewrapp19:44:340
264599150,0rtkit-daemon2644-21rtkit-daemon21:59:380
4227991412,1cyclictest22201-21ssh21:09:141
4226991412,1cyclictest6788-21x2golistsession19:14:340
422699140,13cyclictest0-21swapper/023:05:350
264599140,1rtkit-daemon2644-21rtkit-daemon22:12:220
264599140,1rtkit-daemon2644-21rtkit-daemon19:29:041
4227991313,0cyclictest0-21swapper/121:51:441
4227991310,2cyclictest29799-21irqstats19:46:241
422799130,13cyclictest0-21swapper/122:40:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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