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2024-04-25 - 17:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #7

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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot7s.osadl.org (updated Thu Apr 25, 2024 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1241621212270,20sleep20-21swapper/219:07:112
1241814211971,21sleep10-21swapper/119:09:391
1241594211672,37sleep00-21swapper/019:06:530
1241753211166,19sleep30-21swapper/319:08:533
124197699260,25cyclictest0-21swapper/023:50:270
124197899255,1cyclictest0-21swapper/120:42:431
124197899240,15cyclictest0-21swapper/119:27:481
124198099228,5cyclictest0-21swapper/200:32:252
1241976992116,4cyclictest0-21swapper/021:45:180
1241980992015,4cyclictest1026-21snmpd19:14:422
1241976992010,4cyclictest1316916-21ls22:25:150
1241984991918,1cyclictest1359616-21sshd00:12:163
1241984991918,1cyclictest0-21swapper/323:33:503
124198099190,3cyclictest0-21swapper/222:14:482
124197899198,10cyclictest0-21swapper/122:39:401
124197899190,10cyclictest0-21swapper/123:06:461
124197699192,16cyclictest718200-21gsd-housekeepin21:03:550
124198499189,4cyclictest0-21swapper/323:03:043
124198499180,3cyclictest0-21swapper/322:47:313
124198099180,18cyclictest0-21swapper/200:06:422
124197899188,10cyclictest0-21swapper/121:47:021
124197899183,6cyclictest0-21swapper/100:13:541
1241976991814,4cyclictest0-21swapper/019:14:340
124197699180,3cyclictest0-21swapper/020:33:520
124198499170,16cyclictest0-21swapper/300:15:193
124198099177,4cyclictest0-21swapper/220:00:362
124198099177,10cyclictest0-21swapper/223:28:022
1241980991714,2cyclictest1026-21snmpd00:37:512
124198099170,6cyclictest0-21swapper/220:43:552
124198099170,1cyclictest0-21swapper/220:53:152
124198099170,17cyclictest0-21swapper/221:45:052
124197899177,9cyclictest0-21swapper/122:20:001
124197899177,1cyclictest0-21swapper/120:35:021
1241978991715,2cyclictest0-21swapper/100:01:321
1241978991715,1cyclictest1026-21snmpd22:05:181
1241978991715,1cyclictest0-21swapper/122:55:171
124197899170,1cyclictest0-21swapper/120:53:161
124197699177,9cyclictest0-21swapper/021:22:070
124197699177,9cyclictest0-21swapper/020:36:060
124197699170,1cyclictest0-21swapper/020:53:150
124197699170,17cyclictest0-21swapper/021:34:170
124197699170,16cyclictest0-21swapper/022:45:370
124197699170,16cyclictest0-21swapper/021:06:310
124198499166,9cyclictest0-21swapper/322:35:133
124198499166,9cyclictest0-21swapper/321:05:083
124198499162,13cyclictest0-21swapper/322:15:163
1241984991615,1cyclictest0-21swapper/300:01:323
1241984991610,6cyclictest0-21swapper/321:50:183
124198499160,16cyclictest0-21swapper/321:02:133
124198499160,16cyclictest0-21swapper/319:45:223
1241980991612,4cyclictest0-21swapper/222:50:192
1241980991612,4cyclictest0-21swapper/222:50:192
124198099160,6cyclictest0-21swapper/219:44:102
124198099160,16cyclictest0-21swapper/223:10:552
124198099160,16cyclictest0-21swapper/219:35:002
124198099160,16cyclictest0-21swapper/200:27:342
1241978991613,2cyclictest1026-21snmpd19:59:171
1241978991613,2cyclictest1026-21snmpd00:20:311
124197699166,1cyclictest0-21swapper/021:27:130
1241976991613,2cyclictest1026-21snmpd20:13:500
124197699160,7cyclictest0-21swapper/000:35:520
124197699160,16cyclictest0-21swapper/022:36:130
124197699160,16cyclictest0-21swapper/021:16:190
124197699160,15cyclictest0-21swapper/021:55:190
124198499155,10cyclictest0-21swapper/319:56:293
1241984991512,3cyclictest0-21swapper/322:20:153
1241984991512,3cyclictest0-21swapper/300:30:403
124198499150,7cyclictest0-21swapper/323:37:263
124198499150,1cyclictest0-21swapper/320:55:173
124198499150,15cyclictest0-21swapper/323:45:543
124198499150,15cyclictest0-21swapper/323:42:243
124198499150,15cyclictest0-21swapper/322:25:543
124198499150,15cyclictest0-21swapper/320:27:153
124198499150,15cyclictest0-21swapper/319:34:023
124198099153,11cyclictest1257873-21users19:55:252
124198099150,15cyclictest0-21swapper/221:16:012
124198099150,15cyclictest0-21swapper/219:50:222
124197899156,9cyclictest0-21swapper/123:21:441
124197899156,9cyclictest0-21swapper/122:12:361
124197899150,6cyclictest0-21swapper/122:26:391
124197899150,6cyclictest0-21swapper/119:37:471
124197899150,15cyclictest0-21swapper/121:23:561
124197699155,9cyclictest0-21swapper/021:13:560
1241976991513,1cyclictest0-21swapper/000:15:160
1241976991510,4cyclictest0-21swapper/023:02:580
124197699150,7cyclictest0-21swapper/023:34:500
124197699150,15cyclictest0-21swapper/021:42:290
124197699150,14cyclictest0-21swapper/020:00:300
124197699150,14cyclictest0-21swapper/000:00:220
112099150,3ntpd0-21swapper/120:30:241
112099150,0ntpd0-21swapper/023:55:170
124198499149,5cyclictest0-21swapper/323:57:443
124198499145,9cyclictest0-21swapper/300:08:243
124198499145,4cyclictest1310631-21sed22:10:123
1241984991413,1cyclictest1026-21snmpd20:01:123
1241984991411,3cyclictest0-21swapper/320:11:453
1241984991410,4cyclictest0-21swapper/320:45:143
124198499140,14cyclictest0-21swapper/319:50:253
124198499140,13cyclictest0-21swapper/320:30:113
124198099145,9cyclictest0-21swapper/223:33:412
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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