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2025-12-13 - 12:33

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 376 highest latencies:
System rack5slot7s.osadl.org (updated Fri Dec 12, 2025 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28832224242188,97sleep00-21swapper19:08:220
290609916319,27cyclictest14490-21diskstats00:15:350
290609915917,117cyclictest19495-21df_inode21:30:310
290609915630,21cyclictest14159-21cat00:11:080
290609915616,116cyclictest5597-21df_inode20:05:300
290609915612,43cyclictest5242-21sshd23:20:220
290609915611,121cyclictest27557-21munin-run22:20:020
290609915518,112cyclictest4802-21/usr/sbin/munin23:16:010
290609915516,25cyclictest1483-21apt-get19:40:150
290609915515,120cyclictest30246-21irqstats19:15:340
290609915512,25cyclictest17653-21cpuspeed00:35:250
290609915510,119cyclictest2277-21/usr/sbin/munin19:45:410
290609915418,107cyclictest11987-21apt-get00:00:180
290609915417,117cyclictest29853-21munin-run19:15:060
290609915413,43cyclictest20416-21ls21:35:400
290609915375,55cyclictest23715-21grep21:55:540
290609915325,37cyclictest0-21swapper20:20:010
290609915317,25cyclictest1879-21apt-get23:00:230
290609915317,22cyclictest25714-21apt-get22:10:360
290609915316,23cyclictest1759-21munin-run23:00:010
290609915315,115cyclictest27726-21apt-get22:20:230
290609915238,92cyclictest31696-21timerwakeupswit22:41:060
290609915214,24cyclictest12894-21diskstats00:05:330
290609915214,100cyclictest6844-21latency_hist23:30:050
290609915213,97cyclictest6599-21diskstats20:10:540
290609915118,108cyclictest11862-21apt00:00:010
290609915115,114cyclictest23301-21munin-run21:55:010
290609915114,117cyclictest6997-21apt-get23:30:260
290609915112,116cyclictest30926-21head22:36:040
290609915111,25cyclictest10476-21/usr/sbin/munin23:50:300
290609915111,116cyclictest4033-21cat23:11:060
29060991509,116cyclictest21012-21apt-get21:40:230
290609915020,28cyclictest2919-21memory23:05:470
290609915017,94cyclictest8657-21munin-run23:40:020
290609915017,36cyclictest16860-21munin-run21:15:020
290609915016,109cyclictest25123-21df22:05:310
290609915015,112cyclictest32028-21df_inode22:45:290
290609915015,112cyclictest11790-21wc20:40:560
290609915012,98cyclictest10267-21munin-run23:50:010
290609915012,115cyclictest10432-21latency_hist20:35:020
290609915011,114cyclictest3074-21/usr/sbin/munin19:51:100
290609915010,99cyclictest17671-21cron21:20:010
290609914931,22cyclictest13634-21cron20:55:010
290609914922,100cyclictest366-21diskstats22:50:370
290609914917,106cyclictest17795-21/usr/sbin/munin21:20:570
290609914913,112cyclictest9071-21awk23:40:480
290609914912,39cyclictest17054-21grep00:30:500
290609914911,114cyclictest4236-21grep19:55:530
29060991489,27cyclictest9664-21cat20:30:040
290609914832,23cyclictest24763-21threads22:01:040
290609914820,29cyclictest29366-21users22:26:170
290609914819,28cyclictest16251-21memory00:25:470
290609914817,26cyclictest32451-21irqstats19:30:390
290609914817,102cyclictest12155-21apt-get20:45:200
290609914816,20cyclictest16064-21munin-run21:10:010
290609914812,113cyclictest31151-21mailstats19:21:060
29060991479,114cyclictest726-21ls19:35:230
290609914730,20cyclictest0-21swapper20:35:260
290609914716,24cyclictest8250-21df_inode20:20:300
290609914713,28cyclictest22090-21/usr/sbin/munin21:45:470
290609914711,24cyclictest15210-21/usr/sbin/munin00:20:560
290609914710,25cyclictest5307-21grep20:01:040
290609914618,26cyclictest13922-21irqstats20:55:420
290609914615,23cyclictest18910-21ntp_states21:25:520
290609914611,26cyclictest32030-21timerandwakeup19:26:000
290609914512,21cyclictest29728-21sort22:30:460
290609914412,108cyclictest15184-21grep21:01:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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