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2023-01-30 - 05:35

x86 Intel Xeon E3-1220L V2 @2300 MHz, Linux 4.19.8-rt6 (Profile)

Latency plot of system in rack #4, 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 rack4slot0.osadl.org (updated Fri Aug 05, 2022 12:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1426421320,2sleep0568099cyclictest09:30:420
1077121270,0sleep010770-21sshd10:48:020
980421210,0sleep20-21swapper/211:42:552
651021160,0sleep26511-21sshd12:04:352
2941821110,2sleep2568299cyclictest11:52:242
180342930,1sleep21278-21runrttasks10:30:322
200462860,2sleep1568199cyclictest09:57:451
130462830,0sleep30-21swapper/310:15:223
42612790,0sleep30-21swapper/310:54:383
252902770,1sleep325289-21sshd11:55:343
5680997673,2cyclictest24124-21ipmitool12:10:170
299352760,0sleep10-21swapper/111:45:141
151332750,0sleep30-21swapper/310:26:363
146512750,0sleep00-21swapper/010:52:060
303372730,0sleep10-21swapper/109:51:271
230312720,1sleep1231rcuc/109:28:061
3452710,0sleep0111rcuc/012:22:160
89112700,0sleep10-21swapper/110:58:491
76242690,0sleep20-21swapper/209:56:172
176122690,0sleep10-21swapper/110:01:091
5681996866,1cyclictest24055-21ipmitool10:20:201
48532680,0sleep0111rcuc/011:20:190
233722680,0sleep00-21swapper/009:24:200
135162670,0sleep10-21swapper/112:35:121
131192670,0sleep20-21swapper/209:37:542
198542630,0sleep00-21swapper/011:03:410
5680996260,1cyclictest26139-21ipmitool12:25:160
52352620,1sleep225837-21nfsd11:20:222
506525625,10sleep10-21swapper/107:05:341
165762560,0sleep20-21swapper/209:49:552
549325425,9sleep20-21swapper/207:09:362
5682994745,1cyclictest14736-21ipmitool12:20:152
5683994643,2cyclictest24058-21ipmitool10:20:193
546924625,14sleep30-21swapper/307:09:163
530624327,10sleep00-21swapper/007:07:420
5681993531,2cyclictest14705-21ipmitool12:20:151
131552290,1sleep233-21ksoftirqd/209:53:132
291922280,1sleep329184-21sshd09:32:243
568399279,2cyclictest1205-21grep09:59:203
5681992624,1cyclictest3185-21ipmitool12:15:161
175852260,0sleep00-21swapper/012:16:500
25452250,0sleep20-21swapper/211:01:422
568299242,4cyclictest24331-21bash10:09:192
568099241,5cyclictest30643-21lspci10:02:390
279422240,1sleep1231rcuc/111:11:551
568399230,4cyclictest17832-21bash09:45:393
568299239,1cyclictest29569-21grep11:48:472
568299233,1cyclictest121rcu_preempt08:10:012
5682992312,2cyclictest593-21systemd-journal09:26:302
568099233,2cyclictest0-21swapper/008:14:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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