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2022-07-06 - 17:21

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, Linux 4.9.20-rt16, x86_64 highest latencies:
System rackcslot3s (updated Wed Jul 06, 2022 12:50:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
292602574562,6sleep40-21swapper/407:09:314
291542504483,14sleep20-21swapper/207:08:012
269472504482,15sleep70-21swapper/707:05:007
279792439419,14sleep30-21swapper/307:05:203
290492436414,15sleep00-21swapper/007:06:300
292712408386,15sleep60-21swapper/607:09:416
292252369351,13sleep50-21swapper/507:09:005
291062348329,13sleep10-21swapper/107:07:201
134252920,0sleep40-21swapper/409:55:194
294452700,1sleep10-21swapper/111:35:131
29735996260,1cyclictest11410-21cpuspeed_turbos12:05:134
29731996260,1cyclictest15429-21tr07:45:130
29737995955,2cyclictest11841-21sendmail11:00:006
249232590,0sleep20-21swapper/210:19:592
29736995755,1cyclictest25838-21cron09:15:015
29731995654,1cyclictest29467-21tr11:35:120
29736995250,1cyclictest888-21grep07:15:285
29732995250,1cyclictest6229-21tr09:40:131
29736995149,1cyclictest5258-21cpuspeed_turbos10:45:145
124612510,0sleep10-21swapper/112:05:331
29738995049,0cyclictest8659-21grep09:45:117
29738995048,1cyclictest26990-21cat08:10:017
29738995047,1cyclictest25161-21cat12:34:597
29737994948,0cyclictest26076-21grep10:20:226
29735994948,0cyclictest25837-21sh09:15:014
29734994948,0cyclictest16275-21sh08:55:003
29732994947,1cyclictest10787-21needreboot10:55:241
29738994846,1cyclictest29342-21grep10:25:317
29738994846,1cyclictest10983-21fgrep10:55:287
29735994846,1cyclictest2665-21tr10:40:124
29731994846,1cyclictest27408-21needreboot09:15:240
29738994745,1cyclictest918-21grep07:15:297
29738994619,12cyclictest0-21swapper/711:23:397
29736994638,7cyclictest16067-21tr12:15:145
29737994543,1cyclictest29181-21grep09:20:266
29736994543,1cyclictest29989-21grep08:15:135
29736994543,1cyclictest29989-21grep08:15:125
29736994543,1cyclictest13430-21cpuspeed_turbos09:55:195
29735994544,0cyclictest9352-21head09:45:214
29738994442,1cyclictest5668-21cpuspeed_turbos07:25:137
29736994442,1cyclictest17454-21tr11:10:125
29736994410,19cyclictest0-21swapper/508:44:185
2973499440,25cyclictest0-21swapper/312:05:483
29732994443,0cyclictest27409-21cut09:15:231
29733994341,1cyclictest9794-21tr08:40:142
29736994139,1cyclictest30299-21tr10:30:135
29734994139,1cyclictest4988-21tr08:30:153
29733994037,2cyclictest28802-21sh11:35:002
29731994025,1cyclictest14383-21cut09:55:340
2973899398,20cyclictest0-21swapper/712:26:087
29738993937,1cyclictest19133-21missed_timers12:20:247
29737993914,14cyclictest0-21swapper/610:44:516
29735993937,1cyclictest17566-21sh10:05:014
29735993937,1cyclictest0-21swapper/411:25:274
29733993937,1cyclictest6008-21grep10:45:232
29731993937,1cyclictest22415-21head09:05:270
29738993835,1cyclictest5568-21grep11:50:307
29737993836,1cyclictest13778-21tr12:10:116
29735993837,0cyclictest19015-21grep12:20:214
29735993836,1cyclictest3786-21cpuspeed_turbos09:35:114
29735993836,1cyclictest23979-21wc08:00:364
29735993836,1cyclictest21211-21wc10:10:234
29734993837,0cyclictest12168-21cpuspeed_turbos08:45:143
29734993836,1cyclictest1334-21latency_hist11:45:003
29733993835,1cyclictest15473-21cut07:45:132
2973299389,8cyclictest0-21swapper/110:19:171
29732993837,0cyclictest2623-21run-parts07:20:001
29738993735,1cyclictest7685-21grep11:55:307
2973799377,15cyclictest0-21swapper/610:00:476
29737993735,1cyclictest4658-21grep07:20:396
29737993735,1cyclictest23668-21grep11:20:346
29737993710,7cyclictest0-21swapper/609:58:226
29736993735,1cyclictest20152-21ps09:00:285
29736993735,1cyclictest1705-21grep10:35:325
29736993735,1cyclictest12491-21tr11:00:135
29735993735,1cyclictest7617-21grep09:40:304
29735993735,1cyclictest31457-21cat11:39:594
2973599372,18cyclictest0-21swapper/412:00:324
29734993735,1cyclictest9793-21grep08:40:143
29734993735,1cyclictest19262-21latency_hist11:15:003
29733993735,1cyclictest9807-21turbostat.cron07:35:002
29733993735,1cyclictest0-21swapper/210:05:272
29732993735,1cyclictest5224-21grep09:35:311
29731993735,1cyclictest26566-21unixbench_multi08:05:380
2973899367,16cyclictest0-21swapper/711:02:137
2973899360,1cyclictest0-21swapper/708:50:317
2973799368,4cyclictest0-21swapper/609:28:196
29737993634,1cyclictest875-21cpuspeed_turbos07:15:286
29737993634,1cyclictest16935-21cpuspeed_turbos08:55:146
29737993634,1cyclictest1427-21cpuspeed_turbos09:30:136
29736993634,1cyclictest8103-21tr07:30:145
29736993634,1cyclictest26631-21cpuspeed_turbos09:15:135
29736993634,1cyclictest15126-21head12:10:325
2973599369,10cyclictest0-21swapper/410:05:184
29735993634,1cyclictest31513-21grep10:30:354
29735993634,1cyclictest11535-21latency_hist08:45:004
2973599360,1cyclictest0-21swapper/408:55:224
29734993634,1cyclictest27058-21latency_hist08:10:013
29734993634,1cyclictest12457-21cut11:00:123
2973299360,35cyclictest0-21swapper/110:35:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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