You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-06-20 - 01:59

Intel(R) Xeon(R) CPU E3-1265L V2 @ 2.50GHz, Linux 4.14.28-rt23 (Profile)

Latency plot of system in rack #0, 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 -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 rack0slot0.osadl.org (updated Sun Jun 20, 2021 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
803921420,3sleep62795599cyclictest23:21:596
513921390,0sleep70-21swapper/723:40:117
2754021280,1sleep127542-21sshd00:02:591
2642521220,2sleep526428-21bash00:29:475
143821200,3sleep02791699cyclictest23:43:410
715121180,4sleep72796299cyclictest22:00:237
129682990,0sleep40-21swapper/400:17:034
87222980,2sleep4491rcuc/423:03:464
245682900,0sleep10-21swapper/121:12:321
245682900,0sleep10-21swapper/121:12:321
160272900,0sleep40-21swapper/423:27:104
296072890,1sleep70-21swapper/723:45:567
223342880,4sleep62795599cyclictest23:32:176
223342880,4sleep62795599cyclictest23:32:166
220102850,2sleep5693-21dbus-daemon22:10:405
292002840,0sleep30-21swapper/300:01:473
245362840,1sleep024527-21sshd23:38:280
245362840,1sleep024527-21sshd23:38:280
46242830,1sleep00-21swapper/022:40:240
177222830,1sleep417719-21bash23:08:584
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional