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2022-05-28 - 15:11

x86 Intel Xeon E3-1220L V2 @2300 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #a, 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 -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 rackaslot0.osadl.org (updated Sat May 28, 2022 12:44:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150322840,1sleep11776-21runrttasks11:11:221
69382570,0sleep20-21swapper/211:07:322
41532570,1sleep116528-21diskmemload11:16:321
175452540,0sleep20-21swapper/209:19:242
162962540,1sleep00-21swapper/010:09:170
38272530,1sleep33791-21sshd11:25:463
31462530,0sleep016528-21diskmemload10:17:220
1395025331,18sleep20-21swapper/207:08:082
106652530,1sleep310656-21sshd11:04:443
308692520,1sleep119-21rcuc/110:32:261
284132520,0sleep10-21swapper/111:49:481
143382520,1sleep214304-21sshd12:38:122
126922520,1sleep012687-21bash10:02:400
218982510,0sleep121893-21sshd09:32:171
51332500,1sleep228-21rcuc/211:53:462
30212500,0sleep10-21swapper/112:09:071
1409025028,18sleep30-21swapper/307:09:453
10122500,1sleep11011-21sshd11:00:411
183052490,0sleep00-21swapper/010:46:470
172332490,0sleep20-21swapper/209:34:572
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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