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2026-04-24 - 11:57

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 here to display the system's profile data or here to proceed to next system.
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 highest latencies:
System rack5slot7s.osadl.org (updated Fri Apr 24, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30365224402207,87sleep00-21swapper19:07:240
307039916514,127cyclictest9208-21apt-get23:30:150
307039916418,121cyclictest23940-21apt-get21:46:360
307039916214,123cyclictest1904-21munin-node19:30:110
307039916117,117cyclictest19128-21apt-get00:31:240
307039915945,23cyclictest21162-21timerandwakeup21:26:040
307039915823,105cyclictest28273-21apt-get22:10:210
307039915814,25cyclictest6386-21apt-get23:16:260
307039915814,119cyclictest7856-21df20:05:250
307039915718,24cyclictest32648-21munin-run19:20:030
307039915716,20cyclictest21302-21apt-get21:30:420
307039915714,119cyclictest9040-21munin-run23:30:020
307039915618,115cyclictest15083-21df20:50:260
307039915615,23cyclictest19130-21munin-run00:30:030
307039915615,101cyclictest3577-21apt-get19:40:240
307039915613,100cyclictest20367-21diskstats00:35:420
307039915610,27cyclictest8652-21df20:10:250
307039915518,28cyclictest14187-21apt-get20:45:210
307039915515,24cyclictest12667-21df20:35:260
307039915514,101cyclictest1454-21sort22:41:020
307039915511,118cyclictest31605-21munin-node19:45:100
307039915412,118cyclictest1756-21grep19:26:040
307039915411,100cyclictest14011-21ps23:55:550
307039915320,103cyclictest13505-21diskstats20:40:330
307039915316,113cyclictest30902-21df19:10:260
307039915316,112cyclictest11799-21apt-get23:45:240
307039915315,26cyclictest28967-21apt-get22:15:410
307039915314,114cyclictest25068-21apt-get21:50:250
307039915312,119cyclictest16706-21latency_hist00:15:010
30703991529,117cyclictest8103-21sort23:21:070
307039915219,27cyclictest19153-21irqstats21:15:400
307039915217,112cyclictest16474-21apt21:00:020
307039915213,115cyclictest12784-21systemd-journal00:20:000
307039915212,26cyclictest4962-21ls23:05:230
307039915212,23cyclictest28089-21grep22:06:020
307039915211,24cyclictest22425-21/usr/sbin/munin21:35:110
307039915210,117cyclictest12467-21munin-run20:35:020
307039915110,116cyclictest3003-21grep19:35:500
30703991509,99cyclictest23973-21cat21:45:060
30703991509,100cyclictest4261-21if_eth023:00:360
307039915022,26cyclictest5457-21diskstats19:50:320
307039915015,23cyclictest7658-21apt20:05:010
307039915013,114cyclictest12784-21systemd-journal21:10:000
307039915012,23cyclictest272-21snmpd22:55:550
307039915011,27cyclictest16700-21sshd21:00:260
30703991499,118cyclictest2482-21kworker/u2:322:55:010
307039914921,29cyclictest12919-21diskstats23:50:410
307039914917,91cyclictest6388-21/usr/sbin/munin23:15:050
307039914915,111cyclictest9449-21df20:15:280
307039914914,111cyclictest2304-21head22:46:050
307039914913,38cyclictest6138-21/usr/sbin/munin19:56:000
307039914813,113cyclictest32353-21sed22:31:020
307039914812,23cyclictest10280-21df20:20:260
307039914811,114cyclictest26995-21grep22:00:490
30703991479,115cyclictest11345-21grep20:25:540
307039914720,103cyclictest11098-21diskstats23:40:350
307039914717,25cyclictest18298-21diskstats21:10:320
307039914717,104cyclictest25858-21/usr/sbin/munin21:55:460
307039914715,35cyclictest30305-21irqstats22:20:470
307039914536,89cyclictest14938-21sort00:00:590
307039914517,103cyclictest422-21diskstats19:20:290
307039914515,23cyclictest20055-21memory21:20:450
307039914414,105cyclictest17636-21/usr/sbin/munin00:20:210
307039914410,114cyclictest15756-21grep00:06:000
307039914334,88cyclictest31622-21apt22:30:020
307039914311,106cyclictest32518-21/usr/sbin/munin22:36:010
307039914213,109cyclictest10166-21apt-get23:35:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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