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2025-11-13 - 06:35

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 Thu Nov 13, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4015224242193,87sleep00-21swapper19:07:110
43779916317,122cyclictest5185-21munin-node19:15:090
43779916313,41cyclictest23520-21grep21:06:030
43779916017,119cyclictest26178-21apt-get21:25:280
43779915815,117cyclictest18207-21apt-get23:55:170
43779915716,114cyclictest25365-21munin-run00:40:020
43779915713,119cyclictest6159-21uname19:21:150
43779915512,116cyclictest3515-21/usr/sbin/munin22:25:450
43779915419,108cyclictest20461-21apt-get20:50:180
43779915418,97cyclictest2596-21apt22:20:010
43779915414,116cyclictest18717-21awk20:36:100
43779915412,117cyclictest20359-21apt20:50:010
4377991538,122cyclictest16493-21sshd23:42:530
43779915322,30cyclictest23783-21diskstats21:10:350
43779915322,104cyclictest9491-21diskstats23:00:420
43779915316,38cyclictest8397-21apt-get22:55:240
43779915311,27cyclictest15603-21cat20:20:060
43779915283,45cyclictest6713-21latency_hist22:45:050
43779915216,21cyclictest5653-21munin-run19:20:020
43779915214,23cyclictest7498-21apt19:30:010
43779915211,41cyclictest22476-21ls00:20:420
43779915211,116cyclictest21507-21ls00:15:220
43779915210,118cyclictest7171-21awk22:46:010
4377991519,117cyclictest941-21head22:06:040
43779915118,28cyclictest12543-21diskstats20:00:360
43779915116,25cyclictest12307-21apt20:00:020
43779915116,24cyclictest10189-21irqstats19:45:420
43779915111,25cyclictest32181-21grep22:00:430
43779915111,117cyclictest29609-21wc21:45:240
43779915041,88cyclictest27520-21processes21:31:070
43779915015,32cyclictest13541-21ntpq20:05:510
43779915011,113cyclictest15261-21sort23:35:470
43779915010,27cyclictest10956-21latency_hist23:10:050
43779914932,18cyclictest0-21swapper21:35:500
43779914921,99cyclictest25415-21diskstats21:20:340
43779914921,26cyclictest7911-21ntp_states19:30:500
43779914917,34cyclictest14722-21munin-run20:15:020
43779914915,109cyclictest24467-21/usr/sbin/munin21:15:540
43779914914,112cyclictest19734-21munin-run00:05:000
43779914913,96cyclictest20079-21memory00:05:440
43779914913,109cyclictest2718-21/usr/sbin/munin22:20:240
43779914912,114cyclictest8077-21sort22:51:000
43779914911,23cyclictest9103-21munin-run19:40:030
43779914910,24cyclictest17689-21awk20:30:580
43779914819,27cyclictest13398-21apt-get23:25:250
43779914819,27cyclictest10813-21apt-get19:50:220
43779914817,25cyclictest22192-21diskstats21:00:350
43779914814,23cyclictest14195-21/usr/sbin/munin23:30:300
43779914814,21cyclictest17641-21sshd23:50:410
43779914813,110cyclictest30814-21mailstats21:50:590
43779914811,29cyclictest17133-21/usr/sbin/munin23:46:010
43779914714,21cyclictest20804-21irqstats00:10:390
43779914712,20cyclictest21913-21/usr/sbin/munin20:56:060
43779914711,27cyclictest31819-21cron22:00:020
43779914710,23cyclictest1517-21sendmail_mailqu22:10:590
43779914624,24cyclictest29234-21cut21:40:590
43779914616,23cyclictest4487-21irqstats22:30:410
43779914615,105cyclictest5111-21/usr/sbin/munin22:36:020
43779914614,27cyclictest16759-21ntpq20:25:540
43779914614,24cyclictest12397-21head23:16:030
43779914614,108cyclictest11080-21df_inode23:10:300
43779914612,96cyclictest9220-21/usr/sbin/munin19:40:580
43779914516,105cyclictest18980-21diskstats20:40:330
43779914514,106cyclictest24469-21grep00:31:040
43779914416,21cyclictest12841-21memory23:20:440
43779914413,23cyclictest23167-21df_inode00:25:290
43779914335,88cyclictest16386-21latency_hist20:25:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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