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2024-05-23 - 20:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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: 50.5 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 rack5slot7s.osadl.org (updated Thu May 23, 2024 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6942224452203,98sleep00-21swapper07:06:230
73949916415,125cyclictest27350-21df_inode09:05:330
73949916210,49cyclictest15501-21systemd-journal11:35:010
73949916118,115cyclictest11359-21apt-get10:45:170
73949916013,105cyclictest16169-21/usr/sbin/munin11:16:060
73949915918,114cyclictest25442-21apt-get08:55:230
73949915836,23cyclictest15273-21munin-run11:10:010
73949915826,91cyclictest8991-21sshd07:16:180
73949915818,37cyclictest7491-21apt-get07:10:220
73949915816,114cyclictest17003-21apt-get11:20:170
73949915812,122cyclictest3536-21munin-run10:00:030
73949915718,23cyclictest5563-21sshd10:10:180
73949915717,23cyclictest29993-21munin-run12:40:020
73949915712,23cyclictest25734-21apt-get12:16:450
73949915711,26cyclictest32146-21wc09:35:250
73949915710,22cyclictest7414-21wc10:20:240
73949915624,21cyclictest0-21swapper08:20:090
73949915617,115cyclictest22409-21cat11:51:090
73949915615,36cyclictest4479-21wc10:02:090
73949915614,23cyclictest5452-21grep10:10:080
73949915614,116cyclictest11923-21apt-get07:35:270
73949915611,43cyclictest25631-21wc12:11:100
73949915611,28cyclictest23277-21sshd11:56:170
73949915611,122cyclictest14370-21cat11:01:110
73949915521,108cyclictest9979-21memory10:35:500
73949915519,23cyclictest19230-21apt-get08:21:380
73949915515,26cyclictest18566-21sort11:30:050
73949915515,117cyclictest28835-21apt-get09:15:190
73949915514,25cyclictest25206-21grep08:51:070
73949915514,116cyclictest15501-21systemd-journal10:20:020
73949915511,118cyclictest21946-21timerandwakeup08:31:140
73949915438,38cyclictest23660-21/usr/sbin/munin08:41:130
73949915434,21cyclictest23946-21switchtime12:01:070
73949915422,29cyclictest30470-21apt-get09:25:250
73949915419,108cyclictest28037-21apt-get09:10:170
73949915415,21cyclictest8941-21apt-get10:30:170
73949915314,23cyclictest27697-21apt-get12:25:170
73949915312,99cyclictest20278-21apt-get08:26:400
73949915310,117cyclictest27067-21sed09:01:170
73949915220,105cyclictest29673-21apt-get09:20:210
73949915219,36cyclictest13057-21df10:55:310
73949915218,111cyclictest10959-21munin-run07:30:020
73949915217,25cyclictest1847-21grep09:46:110
73949915216,112cyclictest12473-21ntp_states10:50:560
73949915215,21cyclictest11059-21apt-get07:30:180
73949915214,115cyclictest26905-21sshd12:20:180
73949915213,25cyclictest14917-21zcat07:50:590
73949915212,117cyclictest15452-21wc11:10:250
73949915134,22cyclictest7876-21snmpd07:40:140
73949915118,30cyclictest606-21irqstats09:40:420
73949915118,107cyclictest31271-21apt-get09:30:160
73949915117,29cyclictest8246-21df10:25:310
73949915110,115cyclictest21447-21wc11:46:030
73949915015,22cyclictest16124-21apt-get08:00:180
73949915014,112cyclictest17579-21users08:06:180
73949915010,23cyclictest14066-21ps07:45:570
73949914915,107cyclictest23869-21cat08:45:220
73949914913,112cyclictest20097-21sh11:40:010
73949914911,27cyclictest28904-21/usr/sbin/munin12:31:000
73949914718,25cyclictest9560-21df07:20:240
73949914717,26cyclictest17831-21df_inode08:10:320
73949914715,107cyclictest15294-21/usr/sbin/munin07:55:530
73949914713,24cyclictest24234-21/usr/sbin/munin12:05:400
73949914713,23cyclictest22605-21find08:36:000
73949914710,40cyclictest10846-21tr10:40:540
73949914611,110cyclictest20334-21/usr/sbin/munin11:40:340
73949914519,26cyclictest2137-21df09:50:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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