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2026-06-03 - 11:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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.

Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 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 50 highest latencies:
System rackbslot7s.osadl.org (updated Wed Jun 03, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1870228587,835sleep318745-21ntpq20:49:053
25006276714,733sleep01113-21kworker/u8:122:53:320
25006276714,733sleep01113-21kworker/u8:122:53:320
22228269216,658sleep022236-21/usr/sbin/munin00:28:360
4494251112,484sleep14502-21ntpq20:03:471
12392241936,357sleep312483-21fschecks_time22:13:363
19313241222,372sleep119432-21/usr/sbin/munin22:33:471
19313241222,372sleep119432-21/usr/sbin/munin22:33:471
4853240830,363sleep24938-21users20:03:522
2255223939,372sleep322599-21ntpq00:28:433
27423228616,253sleep327510-21wc21:18:193
5462279102,63sleep30-21swapper/323:18:373
19902227018,234sleep319916-21fschecks_count20:53:333
22962225316,220sleep022957-21apt-get21:03:310
23048224014,209sleep123100-21fschecks_count21:03:361
29971223791,25sleep30-21swapper/319:43:193
10987222315,192sleep111104-21latency_hist23:53:181
11512219812,82sleep311552-21latency23:53:523
11512219812,82sleep311552-21latency23:53:523
2476219431,74sleep30-21swapper/319:58:323
20682219110,167sleep320762-21cat22:38:463
20682219110,167sleep320762-21cat22:38:463
27746218625,139sleep00-21swapper/021:18:360
23847218229,60sleep30-21swapper/322:48:473
23847218229,60sleep30-21swapper/322:48:473
22643217612,141sleep322657-21modprobe19:13:163
29867217415,140sleep329661-21/usr/sbin/munin23:08:363
25509216915,138sleep325585-21awk22:53:473
25509216915,138sleep325585-21awk22:53:473
32121216613,63sleep332157-21ntpq19:48:393
9847216011,47sleep30-21swapper/323:48:403
8316216086,23sleep30-21swapper/323:43:353
9271215894,21sleep30-21swapper/320:18:463
9271215894,21sleep30-21swapper/320:18:463
27927215873,37sleep327949-21kernelversion21:18:393
27082215717,125sleep327171-21awk19:29:223
27082215717,125sleep327171-21awk19:29:223
25837215413,128sleep325950-21latency_hist21:13:183
17744215213,56sleep30-21swapper/320:48:163
12010215014,110sleep30-21swapper/322:13:153
12010215014,110sleep30-21swapper/322:13:153
17219214816,120sleep317272-21sort00:13:173
31560214722,21sleep30-21swapper/319:48:193
1160214717,55sleep30-21swapper/319:53:403
1673214515,115sleep01744-21latency_hist23:23:180
32701214410,121sleep332748-21ntpq21:33:403
1426214414,50sleep30-21swapper/321:38:333
427721428,70sleep34340-21latency_hist21:48:173
427721428,70sleep34340-21latency_hist21:48:173
7127213512,52sleep30-21swapper/320:13:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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