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2022-07-03 - 19:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #3

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 AMD Ryzen XXXX @3300 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #c, slot #3
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 highest latencies:
System rackcslot3s (updated Sun Jul 03, 2022 12:50:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
326162616604,8sleep70-21swapper/707:06:307
3232603594,4sleep20-21swapper/207:08:582
3832510497,9sleep40-21swapper/407:09:474
326832450435,8sleep00-21swapper/007:07:270
3082437416,15sleep50-21swapper/507:08:445
3932385367,12sleep30-21swapper/307:09:553
3762362346,12sleep60-21swapper/607:09:426
327292324303,15sleep10-21swapper/107:08:081
859997978,0cyclictest18243-21cron10:00:002
861997271,0cyclictest2568-21grep07:10:404
253312590,1sleep40-21swapper/408:00:004
864995856,1cyclictest24189-21apt09:05:007
214442580,0sleep20-21swapper/212:20:162
214442580,0sleep20-21swapper/212:20:162
864995733,22cyclictest27792-21latency_hist10:19:597
857995736,20cyclictest975-21head09:20:360
862995529,25cyclictest10535-21cut10:50:125
864995352,0cyclictest29543-21tr09:15:137
863995352,0cyclictest5524-21grep08:25:146
864995222,29cyclictest11594-21grep12:00:127
862995149,1cyclictest29719-21tr11:30:145
863995048,1cyclictest32492-21taskset08:15:016
862995048,1cyclictest2571-21unixbench_singl07:10:415
85899505,33cyclictest0-21swapper/109:27:101
864994846,1cyclictest20847-21cut11:10:227
863994816,16cyclictest0-21swapper/612:38:366
861994846,1cyclictest10948-21sh12:00:004
857994846,1cyclictest32159-21unixbench_multi10:25:320
862994644,1cyclictest22491-21grep11:15:125
861994644,1cyclictest23600-21tr10:10:124
864994543,1cyclictest13794-21tr07:35:137
86399457,13cyclictest0-21swapper/611:15:126
863994443,0cyclictest12919-21tr08:40:136
857994442,1cyclictest29054-21cat09:15:000
862994341,1cyclictest20957-21cpuspeed_turbos07:50:155
861994342,0cyclictest17773-21grep12:10:374
861994342,0cyclictest17773-21grep12:10:374
86099437,28cyclictest0-21swapper/310:11:573
85999430,42cyclictest0-21swapper/209:30:342
858994313,14cyclictest0-21swapper/112:20:041
858994313,14cyclictest0-21swapper/112:20:041
857994340,2cyclictest21982-21needreboot10:05:230
863994232,6cyclictest71-21ksoftirqd/610:32:576
860994240,1cyclictest11297-21grep08:35:343
858994240,1cyclictest14309-21unixbench_multi10:55:321
857994240,1cyclictest10575-21cpuspeed_turbos10:50:120
863994140,0cyclictest22267-21grep10:05:326
862994139,1cyclictest32043-21cpuspeed_turbos09:20:135
862994139,1cyclictest21375-21grep08:55:365
859994139,1cyclictest8313-21head09:35:322
859994139,1cyclictest25614-21needreboot11:20:242
859994139,1cyclictest23381-21tr07:55:142
858994140,0cyclictest24434-21cat11:20:001
857994139,1cyclictest5946-21cat08:25:230
864994032,7cyclictest11332-21cut07:30:157
862994038,1cyclictest31344-21apt09:20:005
85999404,17cyclictest0-21swapper/207:15:022
85899404,32cyclictest0-21swapper/109:52:011
857994038,1cyclictest32463-21latency_hist08:15:010
864993937,1cyclictest28269-21tr12:35:137
864993928,9cyclictest9043-21cpuspeed_turbos07:25:147
86399394,24cyclictest0-21swapper/609:28:096
862993937,1cyclictest17740-21tr11:05:135
86299390,38cyclictest0-21swapper/509:44:595
86199395,23cyclictest0-21swapper/412:00:204
860993924,13cyclictest15130-21unixbench_multi07:35:333
857993937,1cyclictest14885-21wc07:35:320
864993828,9cyclictest32738-21latency_hist10:30:007
864993812,8cyclictest0-21swapper/711:59:577
863993837,0cyclictest9018-21cpuspeed_turbos07:25:136
863993812,12cyclictest0-21swapper/611:08:326
862993836,1cyclictest29189-21latency_hist09:15:005
861993837,0cyclictest17295-21timerandwakeup07:40:364
860993837,0cyclictest25135-21latency_hist08:00:013
859993836,1cyclictest22459-21cpuspeed_turbos09:00:142
858993836,1cyclictest23626-21cpuspeed_turbos10:10:131
857993836,1cyclictest10353-21wc11:55:330
857993835,1cyclictest2228-21tr09:25:140
864993735,1cyclictest21975-21grep10:05:247
863993735,1cyclictest3592-21cat07:15:026
863993735,1cyclictest24244-21grep12:25:236
863993735,1cyclictest24244-21grep12:25:226
863993735,1cyclictest18555-21wc08:50:326
863993729,3cyclictest5497-21snmpd09:05:046
862993735,1cyclictest21677-21wc12:20:215
862993735,1cyclictest21677-21wc12:20:215
861993736,0cyclictest21220-21tr12:20:134
861993736,0cyclictest21220-21tr12:20:134
861993735,1cyclictest20625-21grep12:20:004
861993735,1cyclictest20625-21grep12:19:594
861993735,1cyclictest0-21swapper/410:35:364
86099370,36cyclictest0-21swapper/310:45:133
859993735,1cyclictest6836-21tr11:50:122
859993735,1cyclictest663-21timerandwakeup09:20:352
859993735,1cyclictest0-21swapper/212:25:162
859993735,1cyclictest0-21swapper/212:25:162
859993714,1cyclictest19602-21strings10:00:242
858993736,0cyclictest15746-21sh12:10:001
857993735,1cyclictest25938-21grep12:30:130
857993735,1cyclictest16642-21head08:45:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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