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2022-01-26 - 12:14

Intel(R) Xeon(R) CPU E31220L @ 2.20GHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #5, 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 rack5slot0.osadl.org (updated Wed Jan 26, 2022 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
584221400,2sleep037099cyclictest21:30:140
3018621320,1sleep230135-21sshd21:58:542
1011721240,1sleep01877-21nfsd00:15:100
2243821220,2sleep20-21swapper/222:53:482
1276421190,4sleep137199cyclictest00:11:341
2487821080,2sleep037099cyclictest22:24:210
31828210633,69sleep10-21swapper/119:05:391
3185021020,1sleep30-21swapper/300:02:273
3185021020,1sleep30-21swapper/300:02:263
122352950,4sleep20-21swapper/222:26:322
3243929335,46sleep30-21swapper/319:06:453
59002920,6sleep20-21swapper/223:06:442
96752910,0sleep041ktimersoftd/023:37:070
36662900,2sleep23663-21sshd21:18:552
55562880,3sleep00-21swapper/022:10:460
38502860,1sleep30-21swapper/323:51:283
272112860,2sleep227199-21sshd21:14:132
97402850,2sleep10-21swapper/100:03:421
97402850,2sleep10-21swapper/100:03:411
119352850,2sleep10-21swapper/122:00:341
75732840,1sleep07572-21bash22:44:410
38162820,5sleep337399cyclictest22:10:333
228022820,1sleep20-21swapper/200:28:062
73512780,2sleep20-21swapper/222:55:412
217632780,2sleep30-21swapper/321:57:553
189982780,0sleep00-21swapper/021:53:550
171152780,2sleep10-21swapper/100:27:261
259942760,3sleep237299cyclictest21:36:052
241952740,2sleep10-21swapper/123:31:151
154072730,0sleep315406-21sshd22:41:483
153222710,1sleep20-21swapper/200:23:252
255672660,0sleep00-21swapper/023:12:460
44052640,1sleep237299cyclictest22:33:042
175292620,4sleep137199cyclictest21:31:281
3256426110,12sleep20-21swapper/219:08:202
157092600,3sleep237299cyclictest23:04:102
3257925532,11sleep00-21swapper/019:08:300
4492390,2sleep30-21swapper/322:51:133
9942370,2sleep237299cyclictest22:10:202
373993331,1cyclictest0-21swapper/321:11:043
254062300,2sleep041ktimersoftd/023:42:450
249672301,27sleep3138550irq/27-eth000:35:543
326372290,1sleep00-21swapper/000:10:140
75432280,1sleep21877-21nfsd21:34:052
311892281,25sleep3138550irq/27-eth022:06:223
311892281,25sleep3138550irq/27-eth022:06:213
293862263,18sleep1138550irq/27-eth023:20:371
258012260,2sleep125798-21sshd21:50:511
185732260,1sleep20-21swapper/222:08:412
185732260,1sleep20-21swapper/222:08:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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