You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-07-26 - 17:41

Intel(R) Celeron(R) CPU G1620 @ 2.70GHz, Linux 5.10.35-rt39 (Profile)

Latency plot of system in rack #8, slot #7
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack8slot7.osadl.org (updated Mon Jul 26, 2021 12:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2769599190,18cyclictest32759-21diskmemload12:03:321
2769499190,2cyclictest29536-21ssh10:24:330
2769599181,16cyclictest334-21x2golistsession09:35:211
2769499180,3cyclictest3414-21x2gosqlitewrapp09:11:310
2769599170,1cyclictest19799-21x2golistsession10:15:521
27695991614,1cyclictest26875-21cron11:44:551
2769499160,1cyclictest23967-21x2golistsession07:58:420
2769499160,1cyclictest18464-21x2golistsession11:32:420
2769499160,15cyclictest0-21swapper/010:32:260
27694991515,0cyclictest0-21swapper/011:19:360
27694991512,2cyclictest632-21irqbalance10:38:520
2769499150,15cyclictest0-21swapper/011:39:220
2769499150,15cyclictest0-21swapper/011:01:500
2769499150,15cyclictest0-21swapper/010:08:020
2769499150,15cyclictest0-21swapper/009:16:120
2769499150,14cyclictest0-21swapper/011:29:320
2769599140,13cyclictest632-21irqbalance09:41:421
27694991413,1cyclictest0-21swapper/010:28:210
27694991412,1cyclictest17743-21x2golistsession12:24:020
27694991313,0cyclictest0-21swapper/011:44:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional