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2022-07-06 - 23:54

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, Linux 4.9.20-rt16, x86_64 highest latencies:
System rackcslot8s.osadl.org (updated Wed Jul 06, 2022 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1686916441,7phc2sys0-21swapper/707:09:267
124591590,11ptp4l0-21swapper/407:05:134
1283825646,6sleep60-21swapper/607:07:166
1297625432,7sleep10-21swapper/107:09:041
1287425432,7sleep30-21swapper/307:07:473
1282525343,6sleep20-21swapper/207:07:042
124591530,5ptp4l0-21swapper/007:06:010
1279325241,7sleep50-21swapper/507:06:435
267712410,2sleep31335299cyclictest11:54:223
124591330,4ptp4l0-21swapper/409:35:214
124591330,4ptp4l0-21swapper/409:35:204
124591310,0ptp4l0-21swapper/412:32:584
124591300,0ptp4l0-21swapper/012:12:270
124591300,0ptp4l0-21swapper/009:35:170
124591300,0ptp4l0-21swapper/009:35:160
124591300,0ptp4l0-21swapper/008:45:100
124591290,0ptp4l0-21swapper/612:05:176
124591290,0ptp4l0-21swapper/510:20:235
124591290,0ptp4l0-21swapper/509:34:335
124591290,0ptp4l0-21swapper/412:07:434
124591290,0ptp4l0-21swapper/210:55:182
124591290,0ptp4l0-21swapper/209:33:192
124591290,0ptp4l0-21swapper/012:37:580
124591290,0ptp4l0-21swapper/010:50:120
124591290,0ptp4l0-21swapper/009:40:140
124591290,0ptp4l0-21swapper/009:40:140
124591290,0ptp4l0-21swapper/008:15:150
124591280,0ptp4l0-21swapper/612:17:056
124591280,0ptp4l0-21swapper/612:17:046
124591280,0ptp4l0-21swapper/612:10:476
124591280,0ptp4l0-21swapper/511:04:545
124591280,0ptp4l0-21swapper/411:33:284
124591280,0ptp4l0-21swapper/110:19:201
124591280,0ptp4l0-21swapper/009:27:310
124591270,3ptp4l0-21swapper/409:56:504
124591270,1ptp4l4453-21ssh09:10:054
124591270,0ptp4l4050-21diskmemload10:39:556
124591270,0ptp4l0-21swapper/611:48:396
124591270,0ptp4l0-21swapper/511:30:345
124591270,0ptp4l0-21swapper/412:29:064
124591270,0ptp4l0-21swapper/412:18:084
124591270,0ptp4l0-21swapper/412:18:074
124591270,0ptp4l0-21swapper/210:38:572
124591270,0ptp4l0-21swapper/012:25:240
124591270,0ptp4l0-21swapper/011:36:230
124591270,0ptp4l0-21swapper/011:34:070
124591270,0ptp4l0-21swapper/011:15:370
124591270,0ptp4l0-21swapper/011:02:520
124591270,0ptp4l0-21swapper/010:14:200
124591270,0ptp4l0-21swapper/009:52:160
124591260,3ptp4l0-21swapper/012:00:070
124591260,1ptp4l0-21swapper/612:26:076
124591260,1ptp4l0-21swapper/411:13:074
124591260,0ptp4l0-21swapper/410:00:144
124591260,0ptp4l0-21swapper/407:45:134
124591260,0ptp4l0-21swapper/211:57:202
124591260,0ptp4l0-21swapper/210:32:322
124591260,0ptp4l0-21swapper/110:53:161
124591260,0ptp4l0-21swapper/109:33:471
124591260,0ptp4l0-21swapper/109:11:001
124591260,0ptp4l0-21swapper/007:25:130
124591250,4ptp4l481ktimersoftd/410:22:274
124591250,1ptp4l4050-21diskmemload11:55:140
124591250,0ptp4l321ktimersoftd/208:50:162
124591250,0ptp4l0-21swapper/612:37:406
124591250,0ptp4l0-21swapper/612:23:576
124591250,0ptp4l0-21swapper/611:57:396
124591250,0ptp4l0-21swapper/611:01:146
124591250,0ptp4l0-21swapper/609:30:206
124591250,0ptp4l0-21swapper/511:22:365
124591250,0ptp4l0-21swapper/509:51:385
124591250,0ptp4l0-21swapper/411:40:234
124591250,0ptp4l0-21swapper/411:25:324
124591250,0ptp4l0-21swapper/411:22:414
124591250,0ptp4l0-21swapper/410:45:414
124591250,0ptp4l0-21swapper/410:12:134
124591250,0ptp4l0-21swapper/409:49:004
124591250,0ptp4l0-21swapper/409:44:544
124591250,0ptp4l0-21swapper/409:44:534
124591250,0ptp4l0-21swapper/407:10:174
124591250,0ptp4l0-21swapper/212:28:242
124591250,0ptp4l0-21swapper/112:31:321
124591250,0ptp4l0-21swapper/011:26:320
124591250,0ptp4l0-21swapper/011:06:190
124591250,0ptp4l0-21swapper/010:48:560
124591250,0ptp4l0-21swapper/010:08:410
124591250,0ptp4l0-21swapper/009:56:530
124591250,0ptp4l0-21swapper/009:33:320
124591250,0ptp4l0-21swapper/007:59:570
124591240,3ptp4l401ktimersoftd/310:41:413
124591240,1ptp4l2371-21cat10:35:180
124591240,1ptp4l16120-21interrupts09:25:181
124591240,0ptp4l49-21ksoftirqd/407:50:014
124591240,0ptp4l0-21swapper/611:43:166
124591240,0ptp4l0-21swapper/610:34:506
124591240,0ptp4l0-21swapper/610:27:036
124591240,0ptp4l0-21swapper/512:17:395
124591240,0ptp4l0-21swapper/512:17:395
124591240,0ptp4l0-21swapper/511:27:135
124591240,0ptp4l0-21swapper/509:46:565
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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