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2026-06-29 - 17:20

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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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 rackbslot8s (updated Mon Jun 29, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10814152118104,9sleep30-21swapper/307:09:253
10814512117102,10sleep10-21swapper/107:09:551
10812442116102,9sleep70-21swapper/707:06:587
10812222116101,10sleep50-21swapper/507:06:395
1081371211096,9sleep40-21swapper/407:08:464
1081201211095,10sleep20-21swapper/207:06:202
1081205210994,10sleep60-21swapper/607:06:256
1081143210995,9sleep00-21swapper/007:05:290
10816939910499,0cyclictest553-21snmpd12:25:371
10817069910399,3cyclictest553-21snmpd11:55:284
108171599102100,2cyclictest553-21snmpd12:07:266
108171099102100,2cyclictest553-21snmpd10:59:405
10817069910299,3cyclictest553-21snmpd12:35:074
10817069910299,3cyclictest553-21snmpd12:35:074
10817069910299,3cyclictest1088473-21cat07:20:164
1081706991020,100cyclictest0-21swapper/412:06:464
1081706991020,100cyclictest0-21swapper/407:18:344
10817029910299,3cyclictest553-21snmpd11:50:553
108170299102101,1cyclictest553-21snmpd10:47:073
10816939910299,3cyclictest553-21snmpd07:57:411
1081718991010,100cyclictest0-21swapper/708:51:517
1081718991010,100cyclictest0-21swapper/708:22:327
1081718991010,100cyclictest0-21swapper/708:22:327
1081718991010,100cyclictest0-21swapper/708:07:347
1081715991010,100cyclictest0-21swapper/611:16:176
10817109910199,2cyclictest553-21snmpd09:51:005
10817109910198,3cyclictest553-21snmpd10:29:275
10817109910198,3cyclictest553-21snmpd07:58:315
10817069910199,2cyclictest553-21snmpd12:02:564
10817069910199,2cyclictest553-21snmpd10:04:504
1081706991010,100cyclictest0-21swapper/409:14:504
1081706991010,100cyclictest0-21swapper/408:50:464
1081706991010,100cyclictest0-21swapper/408:20:154
1081706991010,100cyclictest0-21swapper/408:20:144
10817029910199,1cyclictest553-21snmpd12:21:383
10817029910197,4cyclictest553-21snmpd09:05:273
10816989910199,2cyclictest553-21snmpd12:18:052
10816989910199,2cyclictest553-21snmpd10:39:412
1081698991010,100cyclictest0-21swapper/210:18:512
10816939910199,2cyclictest553-21snmpd12:13:521
10816939910199,2cyclictest553-21snmpd11:48:401
1081693991010,99cyclictest0-21swapper/109:50:591
1081689991010,100cyclictest0-21swapper/007:43:240
1081718991000,99cyclictest0-21swapper/710:26:247
1081718991000,99cyclictest0-21swapper/710:13:247
1081718991000,99cyclictest0-21swapper/709:41:027
1081718991000,99cyclictest0-21swapper/709:23:387
1081718991000,99cyclictest0-21swapper/708:58:557
1081718991000,100cyclictest0-21swapper/710:40:147
1081718991000,100cyclictest0-21swapper/707:47:507
10817159910099,1cyclictest553-21snmpd11:29:416
10817159910099,1cyclictest553-21snmpd10:52:226
10817159910099,1cyclictest553-21snmpd10:21:546
10817159910099,1cyclictest553-21snmpd08:19:006
10817159910099,1cyclictest553-21snmpd08:18:596
10817159910099,1cyclictest553-21snmpd07:18:426
1081715991000,99cyclictest0-21swapper/611:50:186
1081715991000,100cyclictest0-21swapper/607:32:546
10817109910099,1cyclictest553-21snmpd12:30:445
10817109910099,1cyclictest553-21snmpd10:13:405
10817109910099,1cyclictest553-21snmpd08:37:355
10817109910099,1cyclictest553-21snmpd08:25:305
10817109910099,1cyclictest553-21snmpd07:51:255
10817109910099,1cyclictest553-21snmpd07:47:025
10817109910099,1cyclictest553-21snmpd07:39:395
10817109910099,1cyclictest1371572-21cat12:35:155
10817109910099,1cyclictest1371572-21cat12:35:155
10817109910099,1cyclictest1200313-21cat10:00:155
10817109910098,2cyclictest553-21snmpd12:06:325
10817109910098,2cyclictest553-21snmpd10:42:175
10817069910099,1cyclictest553-21snmpd11:06:354
10817069910098,2cyclictest553-21snmpd10:37:224
10817069910098,2cyclictest553-21snmpd09:23:134
10817069910097,3cyclictest553-21snmpd10:05:274
10817029910099,1cyclictest553-21snmpd10:03:053
10817029910099,1cyclictest553-21snmpd09:37:473
10817029910099,1cyclictest553-21snmpd09:13:053
10817029910099,1cyclictest553-21snmpd08:27:363
10817029910099,1cyclictest553-21snmpd07:48:043
10817029910098,2cyclictest553-21snmpd11:12:443
10817029910097,3cyclictest553-21snmpd10:13:493
10817029910097,3cyclictest553-21snmpd09:31:583
10816989910099,1cyclictest553-21snmpd11:42:152
10816989910099,1cyclictest553-21snmpd09:35:052
10816989910099,1cyclictest553-21snmpd08:46:222
10816989910098,2cyclictest553-21snmpd11:49:092
1081698991000,99cyclictest0-21swapper/211:58:312
1081698991000,99cyclictest0-21swapper/207:24:132
1081698991000,100cyclictest0-21swapper/211:06:192
1081698991000,100cyclictest0-21swapper/210:21:032
1081698991000,100cyclictest0-21swapper/209:10:162
1081698991000,100cyclictest0-21swapper/208:42:062
1081698991000,100cyclictest0-21swapper/208:33:112
1081698991000,100cyclictest0-21swapper/207:14:422
10816939910099,1cyclictest553-21snmpd11:26:571
10816939910099,1cyclictest553-21snmpd10:31:281
10816939910099,1cyclictest553-21snmpd10:23:041
10816939910099,1cyclictest1172051-21cat09:35:151
10816939910098,2cyclictest553-21snmpd11:33:511
10816939910098,2cyclictest553-21snmpd09:59:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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