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2023-01-29 - 16:12

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 Jan 29, 2023 12:50:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138332670653,13sleep00-21swapper/007:09:110
118862607586,15sleep70-21swapper/707:05:097
136512601581,15sleep20-21swapper/207:06:322
137922591571,15sleep40-21swapper/407:08:354
137982494475,15sleep10-21swapper/107:08:401
136442405384,14sleep60-21swapper/607:06:286
138562398376,17sleep30-21swapper/307:09:303
136162338317,15sleep50-21swapper/507:06:035
14336996259,2cyclictest14041-21cpuspeed_turbos08:15:175
207992570,0sleep10-21swapper/108:30:011
14335995149,1cyclictest9280-21tr08:05:164
14335995049,0cyclictest3236-21tr12:20:184
14334995048,1cyclictest19316-21cut10:40:183
14331994947,1cyclictest552-21tr12:15:160
14337994746,0cyclictest3939-21latency_hist07:55:006
14336994745,1cyclictest16519-21tr08:20:165
14333994746,0cyclictest7930-21cron11:25:002
14331994744,2cyclictest5530-21cron11:20:000
14337994644,1cyclictest23061-21cpuspeed_turbos09:40:166
14331994644,1cyclictest23429-21cron10:50:000
14338994542,1cyclictest3153-21sh11:15:007
14336994543,1cyclictest13582-21cut11:35:195
14336994515,29cyclictest27276-21grep12:00:325
14331994543,1cyclictest23470-21grep11:55:200
14336994442,1cyclictest14640-21cpuspeed_turbos07:10:175
1433199449,1cyclictest282-21systemd-journal12:30:000
14331994442,1cyclictest19327-21tr10:40:190
14333994340,2cyclictest28445-21tr08:45:172
14338994219,1cyclictest19426-21apt07:20:017
14334994240,1cyclictest924-21tr08:55:213
14333994240,1cyclictest32389-21grep08:50:312
14332994241,0cyclictest32402-21sh12:15:001
14331994240,1cyclictest3327-21cpuspeed_turbos09:00:190
14331994139,1cyclictest22470-21unixbench_multi11:50:290
14338994038,1cyclictest19467-21head11:45:247
14334994039,0cyclictest11168-21tr11:30:183
14333994038,1cyclictest32179-21cpuspeed_turbos07:45:142
14333994038,1cyclictest31995-21sh10:00:002
14332994039,0cyclictest25245-21sh12:00:001
14336993937,1cyclictest12191-21tr10:25:215
14335993938,0cyclictest6933-21tr08:00:184
14335993936,1cyclictest14039-21tr08:15:174
14333993938,0cyclictest8740-21sed10:15:292
14333993938,0cyclictest25247-21sh12:00:002
14331993938,0cyclictest31422-21tr11:05:180
14331993937,1cyclictest25702-21grep08:40:010
14338993836,1cyclictest8736-21cut11:25:227
14338993836,1cyclictest0-21swapper/708:20:017
1433899380,37cyclictest0-21swapper/710:40:007
14337993836,1cyclictest18664-21sh10:40:006
14336993836,1cyclictest17481-21turbostat.cron09:30:005
14335993837,0cyclictest13600-21cpuspeed_turbos11:35:194
14333993836,1cyclictest24106-21grep08:35:212
1433399380,1cyclictest0-21swapper/210:40:232
14331993836,1cyclictest8023-21cpuspeed_turbos12:30:180
14338993735,1cyclictest17752-21timerwakeupswit08:20:267
14338993735,1cyclictest0-21swapper/709:10:177
14337993736,0cyclictest19466-21grep11:45:246
14337993735,1cyclictest15447-21grep08:15:286
14336993735,1cyclictest27213-21cpuspeed_turbos07:35:205
14336993735,1cyclictest2377-21basename12:20:005
14335993736,0cyclictest18736-21cpuspeed_turbos11:45:174
1433599373,18cyclictest0-21swapper/412:35:284
14334993735,1cyclictest31412-21cpuspeed_turbos11:05:183
14334993735,1cyclictest23106-21wc08:35:013
1433499370,36cyclictest0-21swapper/310:50:273
14333993735,1cyclictest21704-21tr10:45:172
14332993736,0cyclictest20303-21grep09:35:001
14332993735,1cyclictest32296-21proc_pri11:05:291
14332993735,1cyclictest15922-21grep07:10:291
14332993735,1cyclictest0-21swapper/109:15:211
1433299370,36cyclictest0-21swapper/109:20:271
14331993734,1cyclictest6760-21latency_hist10:15:000
1433199370,1cyclictest0-21swapper/010:25:210
14338993635,0cyclictest24077-21tr10:50:177
14338993634,1cyclictest28217-21tr12:05:197
14338993634,1cyclictest23168-21cat11:55:007
14338993634,1cyclictest12732-21cat08:10:297
14338993634,1cyclictest12413-21cat11:30:297
14338993634,1cyclictest0-21swapper/709:25:007
14337993634,1cyclictest24893-21grep07:30:196
14336993634,1cyclictest8281-21unixbench_multi08:00:305
14336993634,1cyclictest10667-21fgrep10:20:275
14336993633,2cyclictest29253-21sed09:50:285
14335993634,1cyclictest28273-21cpuspeed_turbos12:05:184
1433599360,35cyclictest7360-21cpuspeed_turbos10:15:174
1433599360,35cyclictest25544-21cpuspeed_turbos09:45:184
1433599360,35cyclictest0-21swapper/407:15:024
1433599360,1cyclictest0-21swapper/409:10:244
14334993635,0cyclictest1689-21latency_hist07:50:013
14334993635,0cyclictest0-21swapper/310:00:163
14333993628,7cyclictest21446-21unixbench_singl07:20:282
14332993634,1cyclictest21654-21grep10:45:171
14331993633,2cyclictest21268-21tr08:30:200
14338993534,0cyclictest0-21swapper/708:35:277
14338993533,1cyclictest29447-21switchtime08:45:277
14338993533,1cyclictest27804-21unixbench_multi10:55:367
14338993533,1cyclictest19351-21tr10:40:187
14337993534,0cyclictest31999-21latency_hist10:00:006
14337993534,0cyclictest24083-21cpuspeed_turbos10:50:176
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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