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2022-07-06 - 17:25

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel

x86 Intel Atom D510 @1667 MHz, Linux 3.12.61-rt81 (Profile)

Latency plot of shadow in rack #1, slot #6
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Wed Jul 06, 2022 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273621290,4sleep12738-21find07:31:391
238199990,5rtkit-daemon0-21swapper/307:36:382
2931299904,24cyclictest0-21swapper/108:36:101
2931299903,22cyclictest6797-21fschecks_time07:41:281
29312999015,8cyclictest7533-21uniq08:51:261
238199870,5rtkit-daemon34-21rcuc/305:46:353
2931299863,22cyclictest1333-21snmpd06:50:141
2931299854,58cyclictest0-21swapper/107:17:011
2931299854,56cyclictest0-21swapper/109:51:301
2931299854,56cyclictest0-21swapper/109:51:301
2931299844,63cyclictest0-21swapper/105:15:421
2931299844,22cyclictest0-21swapper/110:11:221
2931299843,73cyclictest0-21swapper/105:26:171
29312998328,49cyclictest24288-21cpuspeed_turbos07:11:241
29312998230,45cyclictest2775-21cut08:41:261
29312998226,49cyclictest20462-21cpuspeed_turbos08:11:221
29312998225,49cyclictest27232-21timerwakeupswit06:06:471
29312998222,53cyclictest32078-21gltestperf07:26:301
29312998217,12cyclictest0-21swapper/106:45:311
2931299814,70cyclictest0-21swapper/109:51:071
2931299814,70cyclictest0-21swapper/105:41:421
2931299814,70cyclictest0-21swapper/105:41:421
2931299814,69cyclictest4606-21hwlatdetect07:36:301
2931299814,69cyclictest0-21swapper/108:46:341
29312998128,46cyclictest23270-21cut08:16:261
29312998125,49cyclictest29691-21cpuspeed_turbos05:06:301
29312998124,50cyclictest20100-21fschecks_count10:26:201
29312998122,52cyclictest15746-21gltestperf10:16:231
2931299804,68cyclictest0-21swapper/106:01:421
2931299803,70cyclictest0-21swapper/106:36:151
29312998026,47cyclictest591-21df_abs06:21:281
29312998026,47cyclictest591-21df_abs06:21:281
29312998022,51cyclictest10210-21hwlatdetect08:56:271
29312998021,52cyclictest21905-21cpuspeed_turbos07:06:251
2931299794,67cyclictest0-21swapper/110:31:181
29312997931,42cyclictest19620-21unixbench_multi08:06:431
29312997930,42cyclictest8521-21cut10:01:221
2931299793,21cyclictest1431-21runrttasks06:16:541
29312997927,46cyclictest19625-21head09:16:271
29312997924,48cyclictest12192-21fschecks_time05:36:331
29312997922,50cyclictest12392-21fschecks_time09:01:251
2931299784,56cyclictest0-21swapper/109:21:391
2931299783,66cyclictest22563-21unixbench-2d05:56:481
29312997825,45cyclictest0-21swapper/106:11:361
29312997823,48cyclictest15361-21fschecks_time06:51:301
29312997820,50cyclictest28444-21cpuspeed_turbos09:36:191
2931299779,12cyclictest0-21swapper/105:16:341
2931299774,23cyclictest0-21swapper/109:27:151
2931299774,12cyclictest0-21swapper/107:56:411
2931299773,24cyclictest0-21swapper/109:32:481
2931299773,16cyclictest25824-21gltestperf08:21:271
29312997723,47cyclictest6842-21fgrep09:56:361
29312997723,47cyclictest27530-21cpuspeed_turbos08:26:221
29312997723,47cyclictest27530-21cpuspeed_turbos08:26:221
29312997721,9cyclictest19367-21gltestperf05:51:331
29312997720,49cyclictest16631-21tr09:11:201
29312997720,49cyclictest16631-21tr09:11:201
2931299764,21cyclictest0-21swapper/110:06:341
2931299763,20cyclictest1431-21runrttasks09:46:021
29312997623,46cyclictest17785-21timerwakeupswit05:46:491
29312997622,10cyclictest1431-21runrttasks07:04:591
29312997622,10cyclictest1431-21runrttasks07:04:591
29312997614,9cyclictest17450-21cpuspeed_turbos10:21:171
29312997611,15cyclictest0-21swapper/108:01:431
2931299753,20cyclictest0-21swapper/107:51:291
29312997521,10cyclictest1431-21runrttasks06:57:571
238199750,6rtkit-daemon0-21swapper/207:09:542
2931299743,24cyclictest15912-21sshd09:07:331
2931299743,11cyclictest0-21swapper/105:31:301
29312997423,44cyclictest32280-21cut08:36:211
29312997416,9cyclictest8376-21gltestperf06:36:311
2931299733,23cyclictest29706-21grep07:21:321
29312997316,8cyclictest0-21swapper/106:26:271
29312997215,9cyclictest7501-21gltestperf05:26:361
238199720,9rtkit-daemon0-21swapper/207:11:242
29312997113,9cyclictest9147-21fschecks_time07:46:291
29312997113,9cyclictest9147-21fschecks_time07:46:291
238199710,8rtkit-daemon0-21swapper/206:51:322
238199700,8rtkit-daemon0-21swapper/206:15:192
238199700,6rtkit-daemon0-21swapper/207:04:242
238199700,6rtkit-daemon0-21swapper/207:04:242
238199700,6rtkit-daemon0-21swapper/205:36:352
2931399696,24cyclictest0-21swapper/207:51:122
2931399696,24cyclictest0-21swapper/207:51:122
238199690,9rtkit-daemon0-21swapper/206:26:262
238199680,9rtkit-daemon0-21swapper/305:31:352
29309996726,16cyclictest0-21swapper/010:01:080
238199670,9rtkit-daemon0-21swapper/205:41:423
238199670,9rtkit-daemon0-21swapper/205:41:423
238199670,7rtkit-daemon0-21swapper/206:11:263
238199670,7rtkit-daemon0-21swapper/205:54:423
238199670,7rtkit-daemon0-21swapper/205:06:513
238199660,6rtkit-daemon0-21swapper/207:51:453
238199650,7rtkit-daemon0-21swapper/207:43:452
238199650,7rtkit-daemon0-21swapper/207:26:232
238199650,7rtkit-daemon0-21swapper/207:00:392
238199650,6rtkit-daemon0-21swapper/206:33:182
238199650,6rtkit-daemon0-21swapper/206:20:482
29309996444,13cyclictest0-21swapper/005:06:460
238199640,7rtkit-daemon0-21swapper/207:23:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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