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2026-03-14 - 04:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

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 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack4slot6s.osadl.org (updated Sat Mar 14, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
567921610,3sleep05681-21missed_timers00:35:180
973921410,4chrt9737-21memory22:45:190
370121330,3sleep03702-21basename20:15:260
2452021210,3chrt24522-21swap19:30:260
2892121170,4chrt28920-21munin-node00:00:110
2143821170,4chrt21439-21latency_hist19:20:020
185821120,3chrt1861-21missed_timers00:20:220
946721110,4chrt9468-21latency_hist22:45:020
2250321110,4chrt22504-21df23:35:120
1917921080,3chrt19181-21sed23:20:260
2831821050,4chrt28320-21timerandwakeup21:50:260
139142980,4sleep013983-21/usr/sbin/munin23:00:250
45592900,4sleep04588-21cpu20:20:090
214532864,9sleep021459-21ntp_states23:30:200
303882855,8sleep030438-21df22:00:100
257732857,66sleep0288-21snmpd19:35:260
18252828,62sleep01838-21latency_hist20:10:010
254222806,62sleep025486-21/usr/sbin/munin21:40:180
295912774,61sleep029660-21uptime21:55:270
1774827521,30sleep017763-21memory19:05:150
261902724,58sleep026212-21latency_hist23:50:000
18780996731,27cyclictest4657-21/usr/sbin/munin22:25:200
317882655,48sleep031789-21ntp_states00:10:230
1878099618,18cyclictest27922-21/usr/sbin/munin19:45:250
1878099618,18cyclictest22766-21/usr/sbin/munin19:25:170
18780996134,16cyclictest12074-21runrttasks20:49:200
18780996123,14cyclictest30209-21/usr/sbin/munin00:05:160
18780996110,24cyclictest29260-21df19:50:120
1878099609,16cyclictest5668-21/usr/sbin/munin22:30:280
1878099608,20cyclictest5845-21/usr/sbin/munin20:25:120
1878099607,16cyclictest305-21/usr/sbin/munin00:15:250
18780996034,15cyclictest17683-21/usr/sbin/munin23:15:230
18780996012,15cyclictest14879-21/usr/sbin/munin21:00:300
1878099599,15cyclictest19708-21sshd19:12:200
18780995927,22cyclictest5249-21runrttasks00:34:100
18780995927,22cyclictest209-21dbus-daemon21:20:010
18780995911,15cyclictest20259-21memory21:20:170
1878099589,16cyclictest3401-21/usr/sbin/munin22:20:220
1878099589,16cyclictest22633-21/usr/sbin/munin21:30:230
1878099589,15cyclictest635-21irqstats22:10:150
1878099588,18cyclictest31679-21/usr/sbin/munin22:05:240
1878099588,16cyclictest19886-21/usr/sbin/munin23:25:300
1878099587,15cyclictest26642-21/usr/sbin/munin19:40:220
18780995835,15cyclictest3175-21/usr/sbin/munin00:25:190
18780995835,15cyclictest24247-21/usr/sbin/munin21:35:240
18780995834,16cyclictest9261-21runrttasks20:37:300
18780995810,17cyclictest27608-21/usr/sbin/munin23:55:130
18780995810,17cyclictest21496-21irqstats21:25:160
1878099579,15cyclictest16757-21/usr/sbin/munin21:05:250
1878099579,14cyclictest1960-21/usr/sbin/munin20:10:110
1878099578,16cyclictest13573-21/usr/sbin/munin20:55:170
1878099578,15cyclictest23761-21/usr/sbin/munin23:40:310
1878099576,14cyclictest10828-21/usr/sbin/munin22:50:280
18780995732,16cyclictest15210-21/usr/sbin/munin23:05:280
18780995711,15cyclictest288-21snmpd20:31:210
18780995711,15cyclictest288-21snmpd20:01:190
1878099569,15cyclictest2496-21seq22:16:200
1878099568,16cyclictest6952-21/usr/sbin/munin22:35:130
1878099568,15cyclictest288-21snmpd19:55:320
1878099558,15cyclictest26573-21/usr/sbin/munin23:50:190
1878099557,14cyclictest12285-21/usr/sbin/munin20:50:150
18780995510,17cyclictest10313-21users20:40:290
1878099549,14cyclictest17508-21cpu21:10:110
1878099548,19cyclictest16295-21chrt23:10:220
1878099548,17cyclictest26906-21/usr/sbin/munin21:45:260
1878099548,13cyclictest22652-21modprobe19:25:010
18780995427,17cyclictest12786-21runrttasks22:56:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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