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2021-01-19 - 05:24

Intel(R) Xeon(R) CPU E3-1220L V2 @ 2.30GHz, 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 50 highest latencies:
System rackaslot0.osadl.org (updated Tue Jan 19, 2021 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2927321020,1sleep228-21rcuc/200:20:472
36332800,2sleep03031599cyclictest20:30:120
250092610,1sleep225008-21bash22:06:202
137712590,1sleep113754-21sshd21:47:401
110282590,1sleep00-21swapper/000:15:170
304632580,1sleep20-21swapper/223:31:322
298512570,0sleep010-21rcuc/000:06:440
135082560,0sleep20-21swapper/222:45:412
200802540,0sleep00-21swapper/022:05:460
71872520,0sleep30-21swapper/323:39:393
185412520,0sleep10-21swapper/122:12:441
12832520,1sleep021097-21diskmemload23:31:540
64932510,0sleep00-21swapper/023:03:500
2983025023,9sleep00-21swapper/019:07:010
291452500,0sleep30-21swapper/322:28:433
237042500,0sleep00-21swapper/021:59:160
52112490,0sleep25199-21sshd00:28:532
3652490,0sleep10-21swapper/123:28:181
2975624823,21sleep20-21swapper/219:06:082
83502470,0sleep10-21swapper/123:11:241
2994024724,9sleep10-21swapper/119:08:271
2895424724,19sleep30-21swapper/319:05:203
261752470,0sleep226174-21sshd21:14:002
199282470,1sleep219908-21sshd22:54:022
79882460,0sleep20-21swapper/222:56:192
130092460,0sleep00-21swapper/000:26:060
221802450,0sleep30-21swapper/322:35:323
101462450,0sleep30-21swapper/300:29:263
33202440,2sleep03031599cyclictest23:46:080
294332410,0sleep13031699cyclictest21:31:541
149632370,0sleep214942-21sshd21:26:502
27622330,0sleep12764-21bash21:18:281
74672220,6sleep03-21ksoftirqd/000:36:080
30317992220,1cyclictest0-21swapper/223:47:412
3031799200,19cyclictest5629-21sshd23:35:512
86502190,0sleep31495-21nfsd21:36:363
3031899199,1cyclictest0-21swapper/321:31:443
3031899190,4cyclictest0-21swapper/321:56:343
3031899190,10cyclictest24363-21bash22:02:463
30317991917,1cyclictest0-21swapper/221:44:362
62372180,3sleep26233-21grep21:50:172
62372180,3sleep26233-21grep21:50:172
3031899183,9cyclictest3728-21cp23:21:333
30317991816,1cyclictest13631-21sshd23:19:112
30317991816,1cyclictest0-21swapper/222:35:232
3031599180,17cyclictest0-21swapper/021:14:490
49922170,1sleep34972-21sshd21:15:093
3031899179,1cyclictest18457-21bash22:57:353
3031899178,2cyclictest3718-21sshd21:29:113
3031899178,1cyclictest0-21swapper/321:40:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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