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2021-01-21 - 02:23

Intel(R) Xeon(R) CPU E5620 @ 2.40GHz, Linux 4.19.127-rt55 (Profile)

Latency plot of system in rack #c, 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 -Up99 -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 rackcslot0.osadl.org (updated Wed Jan 20, 2021 00:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20996212392,26sleep10-21swapper/119:10:311
209922123108,10sleep140-21swapper/1419:10:286
209282122105,13sleep110-21swapper/1119:09:373
209512118102,12sleep80-21swapper/819:09:5014
210602116103,8sleep50-21swapper/519:11:2311
1511321160,0sleep110-21swapper/1122:39:323
20867211392,13sleep90-21swapper/919:08:4715
2188221110,1sleep50-21swapper/523:10:1211
2188221110,1sleep50-21swapper/523:10:1211
2139821100,1sleep70-21swapper/721:56:2413
21019211093,13sleep20-21swapper/219:10:488
20837211093,12sleep70-21swapper/719:08:2813
1006621100,6sleep42159299cyclictest22:53:2010
2990321070,1sleep50-21swapper/523:06:4311
2990321070,1sleep50-21swapper/523:06:4311
18685210690,9sleep30-21swapper/319:07:209
1691621050,5sleep12158899cyclictest21:30:541
1571021050,1sleep120-21swapper/1223:48:504
2711221030,6sleep112160299cyclictest22:21:373
2101121020,1sleep140-21swapper/1400:17:136
325552960,1sleep60-21swapper/600:36:2112
103142950,2sleep60-21swapper/621:49:4212
93552940,1sleep150-21swapper/1523:47:497
220062940,0sleep110-21swapper/1123:05:293
220062940,0sleep110-21swapper/1123:05:293
40422930,1sleep120-21swapper/1221:58:224
33372920,2sleep143339-2110-uname23:47:166
227262920,1sleep00-21swapper/000:30:060
2090729272,4sleep130-21swapper/1319:09:235
161122920,0sleep60-21swapper/600:29:0712
117512920,1sleep100-21swapper/1023:38:062
249232910,0sleep110-21swapper/1123:50:253
226202910,0sleep50-21swapper/522:35:5811
155762910,3sleep774-21ksoftirqd/722:00:0913
18392900,3sleep22159099cyclictest22:37:318
2100528976,9sleep100-21swapper/1019:10:402
325842880,1sleep140-21swapper/1421:53:036
209512880,0sleep60-21swapper/622:50:0912
215472860,1sleep131211ktimersoftd/1300:05:265
251282850,0sleep20-21swapper/222:55:588
2094928575,6sleep60-21swapper/619:09:4812
138712850,1sleep20-21swapper/221:55:158
30312840,0sleep60-21swapper/622:07:3712
2105928375,4sleep40-21swapper/419:11:2210
2102928372,6sleep120-21swapper/1219:10:584
2084528375,4sleep150-21swapper/1519:08:377
2079528272,4sleep00-21swapper/019:07:490
250982810,1sleep90-21swapper/920:02:1515
128682760,0sleep10-21swapper/123:48:231
237622670,1sleep10-21swapper/122:50:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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