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2023-01-28 - 10:06

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 50 highest latencies:
System rackaslot0.osadl.org (updated Sat Jan 28, 2023 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1668621070,0sleep016689-21id21:45:050
297862900,2sleep22260499cyclictest22:26:052
227692830,0sleep20-21swapper/221:16:512
59232810,0sleep25925-21id00:32:052
290522650,1sleep315420-21diskmemload23:46:393
205822640,0sleep041ktimersoftd/021:35:230
264172630,1sleep126418-21sshd21:26:271
113502630,1sleep311328-21sshd00:21:563
8042610,1sleep0802-21bash23:18:030
33302600,1sleep03301-21sshd21:21:080
196062590,1sleep219588-21sshd21:55:162
72492580,1sleep30-21swapper/300:32:143
73162570,2sleep041ktimersoftd/000:07:460
2222925736,18sleep00-21swapper/019:08:320
2222725735,18sleep30-21swapper/319:08:313
116192570,0sleep111620-21sshd23:38:351
212782560,0sleep021274-21bash00:19:370
174942560,1sleep215420-21diskmemload22:11:432
135842550,1sleep113554-21sshd22:01:161
165702540,5sleep230-21ksoftirqd/223:03:352
2210825327,9sleep20-21swapper/219:07:022
136972530,1sleep20-21swapper/222:18:002
116932520,0sleep311692-21bash00:01:043
307402510,1sleep030742-21unixbench_singl20:30:260
2229025125,9sleep10-21swapper/119:09:221
126132510,0sleep10-21swapper/121:54:381
60042500,1sleep015420-21diskmemload23:02:320
315172500,0sleep30-21swapper/323:40:303
230942500,0sleep00-21swapper/000:23:140
173382500,1sleep00-21swapper/022:37:490
139982500,1sleep213993-21sshd22:24:372
111072500,0sleep015420-21diskmemload21:54:300
271482490,0sleep20-21swapper/223:23:542
249962490,1sleep20-21swapper/221:35:502
237672490,0sleep00-21swapper/022:48:100
172032490,0sleep20-21swapper/223:42:162
135112480,0sleep00-21swapper/023:22:310
141852470,1sleep31787-21runrttasks23:28:593
106402460,0sleep10-21swapper/122:56:371
8522440,0sleep10-21swapper/123:30:511
275842410,0sleep230-21ksoftirqd/222:55:052
189782380,1sleep115420-21diskmemload21:19:421
34422230,1sleep33439-21bash21:53:413
22602992321,1cyclictest7661-21sshd23:54:140
2260599220,21cyclictest0-21swapper/322:38:183
22604992119,1cyclictest0-21swapper/200:20:052
2260399215,15cyclictest22910-21sshd00:30:231
22603992010,5cyclictest23196-21sshd21:23:091
2260399200,14cyclictest3641-21sshd21:56:551
2260299200,14cyclictest0-21swapper/022:10:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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