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2024-06-22 - 05:20

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

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 highest latencies:
System rack7slot3s.osadl.org (updated Fri Jun 21, 2024 15:36:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
814799793,49cyclictest21252-21fschecks_time15:08:150
8148997632,22cyclictest25014-21fschecks_time15:18:071
8147997551,4cyclictest0-21swapper/014:32:580
8147997118,17cyclictest0-21swapper/014:57:560
8147996640,5cyclictest31718-21apt15:37:490
272672660,3sleep10-21swapper/115:23:121
8148996429,21cyclictest14068-21if_eth014:48:051
8148996429,13cyclictest15434-21/usr/sbin/munin14:53:151
8147996433,5cyclictest15559-21wget14:52:590
8148996323,11cyclictest0-21swapper/115:17:501
8148996323,11cyclictest0-21swapper/115:17:501
814799633,14cyclictest0-21swapper/015:17:580
78752634,14sleep17904-21munin-run14:32:501
8150995927,12cyclictest14303-21netstat14:48:093
814799591,41cyclictest1292-21runrttasks14:48:380
8148995841,14cyclictest8146-21cyclictest14:32:511
8148995828,13cyclictest13449-21latency_hist14:47:491
814799582,32cyclictest29945-21latency_hist15:32:490
8150995731,12cyclictest20637-20Xorg15:09:373
8148995622,10cyclictest0-21swapper/115:04:071
8147995527,8cyclictest26575-21wget15:22:590
8148995428,6cyclictest20637-20Xorg15:09:381
8150995321,21cyclictest18902-21date15:02:503
8148995323,11cyclictest0-21swapper/115:01:441
8150995224,8cyclictest16257-21/usr/sbin/munin14:53:123
8150995124,13cyclictest27237-21ntpq15:23:113
8148995135,11cyclictest29267-21ls15:28:201
8148995120,13cyclictest0-21swapper/114:42:421
8147995025,6cyclictest22995-21x11perf15:13:100
8147995025,6cyclictest22995-21x11perf15:13:100
8149994920,7cyclictest22354-21seq15:10:352
8148994924,9cyclictest0-21swapper/115:34:301
8150994815,17cyclictest8150irq/56-dwc_otg_15:15:283
8150994815,17cyclictest8150irq/56-dwc_otg_15:15:283
8150994726,7cyclictest25176-21irqstats15:18:103
8150994713,19cyclictest8150irq/56-dwc_otg_14:42:493
814799471,26cyclictest20644-21idleruntime-cro15:07:490
76182473,37sleep00-21swapper/014:29:290
8150994622,17cyclictest31660-21seq15:37:203
814999456,25cyclictest0-21swapper/214:32:582
814799458,21cyclictest0-21swapper/014:38:190
814799451,15cyclictest0-21swapper/014:43:080
814999437,24cyclictest0-21swapper/215:22:592
8150994224,14cyclictest19241-21cpuspeed15:03:003
8150994130,8cyclictest28354-21apt-get15:27:593
8150994128,10cyclictest8982-21/usr/sbin/munin14:33:143
8150994128,10cyclictest13202-21sshd14:45:253
814999384,7cyclictest29-21rcuc/214:47:492
8149993614,14cyclictest0-21swapper/214:57:592
8149993511,11cyclictest301ktimersoftd/215:17:512
814999347,15cyclictest0-21swapper/215:28:012
814999339,14cyclictest29-21rcuc/215:04:132
814999336,14cyclictest0-21swapper/214:52:582
814999334,14cyclictest8150irq/56-dwc_otg_14:38:022
8149993313,9cyclictest301ktimersoftd/215:20:552
814999331,21cyclictest31002-21switchtime15:33:142
814999331,17cyclictest301ktimersoftd/215:17:502
814999326,20cyclictest31-21ksoftirqd/214:48:112
65262328,12sleep20-21swapper/214:28:012
77272283,15sleep30-21swapper/314:30:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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