You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-01-21 - 03:40

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 50 highest latencies:
System rack0slot0.osadl.org (updated Thu Jan 21, 2021 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1324021570,4sleep71628199cyclictest22:30:067
2518821450,0sleep60-21swapper/622:19:556
2518821450,0sleep60-21swapper/622:19:546
1328621220,4sleep61627799cyclictest23:55:486
316232920,4sleep21625299cyclictest23:24:342
90682910,2sleep40-21swapper/423:21:564
17012910,0sleep10-21swapper/122:37:121
302352880,1sleep430204-21sshd22:00:134
177942870,0sleep50-21swapper/522:41:015
155402870,1sleep415539-21sshd22:48:384
63712850,0sleep70-21swapper/700:04:487
28242850,1sleep72826-21sshd23:47:407
16762850,1sleep6681ktimersoftd/622:44:546
98662840,0sleep40-21swapper/422:23:454
98662840,0sleep40-21swapper/422:23:444
77762840,1sleep618709-21nscd22:23:396
77762840,1sleep618709-21nscd22:23:386
219752840,1sleep60-21swapper/623:48:366
327522830,0sleep2311rcuc/223:35:172
290472830,0sleep60-21swapper/622:35:266
200622830,0sleep60-21swapper/600:16:086
145482830,0sleep5581rcuc/500:14:235
250742820,0sleep20-21swapper/221:52:172
202382810,0sleep40-21swapper/422:41:084
128872810,1sleep081ktimersoftd/023:17:350
315172800,0sleep70-21swapper/723:58:147
251162800,1sleep00-21swapper/021:15:270
250772800,0sleep00-21swapper/022:00:010
152292800,1sleep20-21swapper/220:15:132
152292800,1sleep20-21swapper/220:15:132
55422790,0sleep5591ktimersoftd/523:29:265
299022790,1sleep029896-21sshd22:06:180
138232790,1sleep413821-21sshd22:25:304
138232790,1sleep413821-21sshd22:25:294
30772780,0sleep40-21swapper/423:10:584
22832780,4sleep71628199cyclictest21:49:417
220092780,0sleep40-21swapper/421:16:534
173132780,1sleep30-21swapper/321:18:123
85102770,0sleep60-21swapper/623:05:076
58042770,0sleep40-21swapper/421:34:314
223132770,0sleep60-21swapper/621:19:586
244942760,0sleep50-21swapper/523:48:425
175572760,0sleep70-21swapper/700:16:027
126122760,0sleep00-21swapper/021:11:520
44122750,0sleep30-21swapper/321:20:353
185522750,4sleep71628199cyclictest22:41:047
137402750,1sleep7761rcuc/723:23:437
319422740,1sleep30-21swapper/321:54:113
310072740,1sleep10-21swapper/123:00:041
285802740,1sleep728574-21sshd23:38:117
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional