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2023-03-27 - 16:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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 
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x86 Intel Pentium G4400 @3300 MHz, Linux 4.19.37-rt19 (Profile)

Latency plot of shadow in rack #8, slot #7
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 rack8slot7s.osadl.org (updated Mon Mar 27, 2023 12:43:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
92632470,0sleep10-21swapper/109:35:251
59642310,0sleep10-21swapper/109:25:191
1990899220,16cyclictest0-21swapper/109:30:191
1990799220,8cyclictest4462-21apt-get12:20:120
1990799220,8cyclictest21185-21apt-get08:40:120
19908992121,0cyclictest0-21swapper/110:18:121
1990899210,16cyclictest0-21swapper/109:45:131
1990899210,15cyclictest0-21swapper/110:45:151
1990899210,14cyclictest0-21swapper/112:10:131
1990799210,18cyclictest31988-21diskmemload11:46:080
1990899200,17cyclictest0-21swapper/110:35:301
1990899200,17cyclictest0-21swapper/107:10:131
1990899200,15cyclictest0-21swapper/111:05:191
1990899200,14cyclictest0-21swapper/111:10:191
1990899200,14cyclictest0-21swapper/107:20:171
1990799202,8cyclictest29024-21apt-get10:30:180
1990899191,17cyclictest0-21swapper/110:25:201
1990899190,18cyclictest0-21swapper/110:50:171
1990899190,16cyclictest0-21swapper/107:35:131
1990899190,15cyclictest0-21swapper/111:35:101
1990899190,14cyclictest0-21swapper/108:10:161
1990899190,12cyclictest0-21swapper/112:25:131
1990899190,12cyclictest0-21swapper/110:05:131
1990899190,0cyclictest0-21swapper/107:25:131
1990799196,7cyclictest9438-21apt-get11:05:190
1990799190,18cyclictest31988-21diskmemload12:11:520
1990799190,18cyclictest31988-21diskmemload10:01:210
1990799190,10cyclictest26669-21apt-get08:55:130
1990899182,15cyclictest0-21swapper/109:50:131
1990899181,15cyclictest0-21swapper/107:15:011
1990899180,1cyclictest0-21swapper/111:30:201
1990899180,16cyclictest0-21swapper/111:20:171
1990899180,15cyclictest0-21swapper/111:15:221
1990899180,13cyclictest0-21swapper/108:15:131
1990899180,12cyclictest0-21swapper/112:35:171
1990899180,12cyclictest0-21swapper/112:20:121
1990899180,12cyclictest0-21swapper/111:55:241
1990899180,10cyclictest0-21swapper/111:45:111
1990899180,10cyclictest0-21swapper/110:40:131
1990899180,0cyclictest0-21swapper/107:50:231
1990799182,15cyclictest31988-21diskmemload10:41:110
1990799180,8cyclictest29535-21apt-get12:00:130
1990799180,11cyclictest26004-21apt-get07:25:130
1990899175,7cyclictest0-21swapper/110:20:211
1990899172,11cyclictest0-21swapper/108:35:151
1990899171,15cyclictest0-21swapper/110:30:271
1990899170,2cyclictest0-21swapper/109:40:221
1990899170,16cyclictest0-21swapper/112:15:221
1990899170,16cyclictest0-21swapper/109:11:341
1990899170,16cyclictest0-21swapper/108:44:421
1990899170,16cyclictest0-21swapper/108:00:171
1990899170,13cyclictest0-21swapper/112:00:121
1990899170,13cyclictest0-21swapper/109:05:141
1990899170,13cyclictest0-21swapper/108:58:161
1990899170,12cyclictest0-21swapper/109:55:141
1990899170,12cyclictest0-21swapper/108:30:211
1990899170,11cyclictest0-21swapper/110:00:121
1990899170,10cyclictest0-21swapper/108:20:131
1990799178,4cyclictest19931-21apt-get07:10:130
1990799173,4cyclictest7095-21apt-get09:30:180
1990799172,7cyclictest5783-21apt-get10:55:170
1990799171,9cyclictest29702-21apt-get07:35:130
189012171,3sleep018989-21sensors_temp07:05:240
1990899165,9cyclictest0-21swapper/111:54:041
1990899162,13cyclictest0-21swapper/109:15:191
1990899162,10cyclictest0-21swapper/112:30:191
1990899160,15cyclictest0-21swapper/112:05:231
1990899160,13cyclictest0-21swapper/108:50:131
1990899160,12cyclictest0-21swapper/107:42:551
1990899160,11cyclictest0-21swapper/110:55:181
1990899160,10cyclictest24241-21chrt08:45:271
1990899160,10cyclictest0-21swapper/107:55:131
1990899160,0cyclictest0-21swapper/109:20:251
1990799165,5cyclictest3948-21apt-get10:50:170
1990799162,6cyclictest27201-21apt-get10:25:200
19907991610,5cyclictest547-21in:imuxsock11:40:000
1990799160,15cyclictest19949-21meminfo08:35:170
1990899153,11cyclictest29147-21chrt07:31:231
1990899150,9cyclictest0-21swapper/111:40:131
1990899150,14cyclictest0-21swapper/111:25:161
1990899150,11cyclictest0-21swapper/107:45:201
1990899150,0cyclictest0-21swapper/109:00:121
1990799157,7cyclictest7603-21apt-get11:00:130
1990799155,4cyclictest23535-21apt-get10:15:140
1990799153,8cyclictest27836-21apt-get07:30:130
1990799151,9cyclictest28495-21apt-get09:00:130
1990799150,6cyclictest15700-21apt-get08:25:140
1990799150,14cyclictest32229-21meminfo07:40:240
1990799150,10cyclictest27328-21seq11:52:500
1990899142,9cyclictest0-21swapper/108:05:131
1990899141,12cyclictest0-21swapper/110:10:141
1990899141,12cyclictest0-21swapper/108:25:141
1990899140,12cyclictest0-21swapper/111:00:131
1990799146,7cyclictest10749-21apt-get09:40:200
1990799143,6cyclictest1589-21apt-get09:15:190
1990799142,8cyclictest13083-21apt-get11:15:140
1990799141,8cyclictest16741-21apt-get11:25:120
1990799141,8cyclictest13873-21apt-get08:20:120
1990799141,8cyclictest12043-21apt-get08:15:140
1990799140,5cyclictest2116-21apt-get10:45:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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