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2023-01-31 - 11:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #8

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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x86 Intel Xeon E3-1230 v2 @3300 MHz, Linux 4.19.1-rt3 (Profile)

Latency plot of shadow in rack #c, slot #8
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackcslot8s.osadl.org (updated Tue Jan 31, 2023 00:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
125391720,28ptp4l0-21swapper/119:06:061
92732650,1sleep6641ktimersoftd/622:10:006
273102630,0sleep40-21swapper/421:50:184
301352620,0sleep20-21swapper/221:54:572
125391620,31ptp4l0-21swapper/319:06:373
125391620,31ptp4l0-21swapper/219:05:032
97382610,0sleep40-21swapper/419:20:174
125391610,6ptp4l0-21swapper/719:09:257
281152600,0sleep10-21swapper/121:50:231
253762600,0sleep70-21swapper/700:36:287
353925847,6sleep40-21swapper/419:06:554
373325745,7sleep60-21swapper/619:09:236
366325332,7sleep00-21swapper/019:08:280
125391530,5ptp4l0-21swapper/519:06:365
4068993327,5cyclictest5787-21ssh21:22:024
125391320,0ptp4l0-21swapper/023:20:210
125391320,0ptp4l0-21swapper/023:20:200
4068993125,5cyclictest14860-21ssh00:23:464
125391310,0ptp4l0-21swapper/120:55:261
125391310,0ptp4l0-21swapper/120:55:261
4068993028,1cyclictest21723-21sh23:07:244
125391300,0ptp4l0-21swapper/521:34:155
125391300,0ptp4l0-21swapper/222:29:242
125391300,0ptp4l0-21swapper/122:56:161
125391300,0ptp4l0-21swapper/020:10:290
125391300,0ptp4l0-21swapper/000:15:250
125391290,3ptp4l0-21swapper/022:05:400
125391290,1ptp4l20690-21cat20:55:015
125391290,1ptp4l20690-21cat20:55:005
125391290,0ptp4l0-21swapper/521:16:465
125391290,0ptp4l0-21swapper/423:40:324
125391290,0ptp4l0-21swapper/421:25:074
125391290,0ptp4l0-21swapper/420:30:224
125391290,0ptp4l0-21swapper/100:15:191
125391280,0ptp4l0-21swapper/622:58:396
125391280,0ptp4l0-21swapper/423:46:044
125391280,0ptp4l0-21swapper/422:07:324
125391280,0ptp4l0-21swapper/421:40:524
125391280,0ptp4l0-21swapper/123:13:211
125391280,0ptp4l0-21swapper/122:07:111
125391280,0ptp4l0-21swapper/022:44:570
125391280,0ptp4l0-21swapper/022:33:250
125391280,0ptp4l0-21swapper/022:21:510
125391280,0ptp4l0-21swapper/021:11:270
125391280,0ptp4l0-21swapper/020:02:130
125391270,3ptp4l0-21swapper/000:01:330
125391270,1ptp4l0-21swapper/321:35:203
125391270,0ptp4l0-21swapper/523:44:455
125391270,0ptp4l0-21swapper/500:36:475
125391270,0ptp4l0-21swapper/423:58:304
125391270,0ptp4l0-21swapper/423:54:504
125391270,0ptp4l0-21swapper/423:36:204
125391270,0ptp4l0-21swapper/423:17:024
125391270,0ptp4l0-21swapper/423:10:574
125391270,0ptp4l0-21swapper/422:11:164
125391270,0ptp4l0-21swapper/422:02:004
125391270,0ptp4l0-21swapper/421:10:444
125391270,0ptp4l0-21swapper/400:13:344
125391270,0ptp4l0-21swapper/321:00:253
125391270,0ptp4l0-21swapper/300:02:323
125391270,0ptp4l0-21swapper/122:16:141
125391270,0ptp4l0-21swapper/121:20:511
125391270,0ptp4l0-21swapper/100:14:521
125391270,0ptp4l0-21swapper/100:09:021
125391260,2ptp4l0-21swapper/500:13:575
125391260,1ptp4l0-21swapper/421:32:364
125391260,0ptp4l0-21swapper/523:39:275
125391260,0ptp4l0-21swapper/522:42:135
125391260,0ptp4l0-21swapper/500:19:245
125391260,0ptp4l0-21swapper/423:03:524
125391260,0ptp4l0-21swapper/422:36:154
125391260,0ptp4l0-21swapper/421:39:304
125391260,0ptp4l0-21swapper/400:15:444
125391260,0ptp4l0-21swapper/321:15:173
125391260,0ptp4l0-21swapper/122:02:151
125391260,0ptp4l0-21swapper/023:55:350
125391260,0ptp4l0-21swapper/023:35:240
125391260,0ptp4l0-21swapper/023:03:280
125391260,0ptp4l0-21swapper/022:58:040
125391260,0ptp4l0-21swapper/022:49:520
125391260,0ptp4l0-21swapper/022:11:320
125391260,0ptp4l0-21swapper/022:02:000
125391260,0ptp4l0-21swapper/020:35:230
125391260,0ptp4l0-21swapper/020:30:500
125391260,0ptp4l0-21swapper/020:20:310
125391260,0ptp4l0-21swapper/019:31:120
125391260,0ptp4l0-21swapper/000:13:480
125391260,0ptp4l0-21swapper/000:08:190
125391250,4ptp4l0-21swapper/423:27:534
125391250,4ptp4l0-21swapper/423:27:524
125391250,1ptp4l2402-21fw_forwarded_lo22:00:197
125391250,0ptp4l0-21swapper/621:58:036
125391250,0ptp4l0-21swapper/523:31:445
125391250,0ptp4l0-21swapper/523:13:215
125391250,0ptp4l0-21swapper/422:46:234
125391250,0ptp4l0-21swapper/422:41:554
125391250,0ptp4l0-21swapper/422:16:324
125391250,0ptp4l0-21swapper/400:06:164
125391250,0ptp4l0-21swapper/322:50:543
125391250,0ptp4l0-21swapper/122:10:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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