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2026-03-28 - 09:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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: 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 100 highest latencies:
System rack4slot1s.osadl.org (updated Sat Mar 28, 2026 00:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
301362850,3sleep20-21swapper/223:56:542
301362850,3sleep20-21swapper/223:56:542
236892830,3sleep20-21swapper/222:12:032
236892830,3sleep20-21swapper/222:12:032
168972790,2sleep30-21swapper/323:21:543
168972790,2sleep30-21swapper/323:21:543
168972790,2sleep30-21swapper/323:21:543
157512770,2sleep115838-21sort21:51:571
78432760,2chrt7846-21acpi21:31:530
78432760,2chrt7846-21acpi21:31:530
4792720,3chrt0-21swapper/021:11:550
4792720,3chrt0-21swapper/021:11:550
132852690,3sleep30-21swapper/300:37:033
132852690,3sleep30-21swapper/300:37:033
132852690,3sleep30-21swapper/300:37:033
146502680,2chrt14653-21unixbench_multi21:47:211
188262590,3chrt0-21swapper/122:01:401
188262590,3chrt0-21swapper/122:01:401
188262590,3chrt0-21swapper/122:01:401
13172590,2chrt0-21swapper/200:06:552
90912550,3sleep00-21swapper/020:06:590
90912550,3sleep00-21swapper/020:06:590
6192550,2sleep0171ktimers/022:37:010
6192550,2sleep0171ktimers/022:37:010
6192550,2sleep0171ktimers/022:37:010
42542550,1sleep20-21swapper/222:47:002
42542550,1sleep20-21swapper/222:47:002
42542550,1sleep20-21swapper/222:47:002
42542550,1sleep20-21swapper/222:47:002
201202540,3sleep20-21swapper/223:31:422
201202540,3sleep20-21swapper/223:31:422
290292530,3chrt0-21swapper/223:52:042
290292530,3chrt0-21swapper/223:52:042
306482520,2sleep00-21swapper/021:06:400
306482520,2sleep00-21swapper/021:06:400
72432460,3chrt6629-21/usr/sbin/munin00:21:570
72432460,3chrt6629-21/usr/sbin/munin00:21:570
20425994637,5cyclictest1346-21avahi-daemon00:02:340
20425994637,5cyclictest1346-21avahi-daemon00:02:340
250122450,3chrt0-21swapper/222:16:532
250122450,3chrt0-21swapper/222:16:532
20425994540,3cyclictest0-21swapper/000:01:460
20425994540,3cyclictest0-21swapper/000:01:460
220822440,2chrt0-21swapper/220:41:542
220822440,2chrt0-21swapper/220:41:542
158392440,3sleep20-21swapper/221:51:572
92872430,3sleep30-21swapper/320:07:023
92872430,3sleep30-21swapper/320:07:023
3462410,3sleep30-21swapper/300:02:063
3462410,3sleep30-21swapper/300:02:063
38602400,1sleep13909-21awk21:21:421
38602400,1sleep13909-21awk21:21:421
38602400,1sleep13909-21awk21:21:421
11612400,3sleep10-21swapper/100:06:551
5132390,3sleep30-21swapper/322:37:003
5132390,3sleep30-21swapper/322:37:003
5132390,3sleep30-21swapper/322:37:003
195632390,2sleep20-21swapper/220:36:482
269602380,2sleep20-21swapper/222:21:552
269602380,2sleep20-21swapper/222:21:552
269602380,2sleep20-21swapper/222:21:552
110032380,3sleep30-21swapper/321:37:283
110032380,3sleep30-21swapper/321:37:283
20432993721,3cyclictest16119-21kworker/u9:3-xprtiod00:01:531
20425993628,6cyclictest13675-21cut21:46:530
20432993526,7cyclictest6904-21fschecks_time00:21:541
20432993526,7cyclictest6904-21fschecks_time00:21:541
20425993528,5cyclictest24283-21fschecks_time23:41:520
20425993521,12cyclictest0-21swapper/020:36:540
20425993521,12cyclictest0-21swapper/020:36:540
2044799341,27cyclictest31417-21chrt00:01:463
2044799341,27cyclictest31417-21chrt00:01:463
2043299342,27cyclictest31531-21/usr/sbin/munin00:01:561
2043299342,27cyclictest31531-21/usr/sbin/munin00:01:561
20425993427,5cyclictest10566-21wc21:37:010
20425993427,5cyclictest10566-21wc21:37:010
277612330,1sleep127765-21gzip20:56:581
277612330,1sleep127765-21gzip20:56:581
20432993328,4cyclictest320-21needreboot22:36:561
20432993328,4cyclictest320-21needreboot22:36:561
20432993328,4cyclictest320-21needreboot22:36:561
20425993327,4cyclictest572-21cups-browsed22:02:020
20425993327,4cyclictest572-21cups-browsed22:02:020
20425993326,5cyclictest1743-21netstat00:07:000
20425993326,5cyclictest16787-21fschecks_time23:21:530
20425993326,5cyclictest16787-21fschecks_time23:21:530
20425993326,5cyclictest16787-21fschecks_time23:21:530
20425993326,4cyclictest142-21systemd-journal22:36:410
34812320,3sleep20-21swapper/222:46:522
34812320,3sleep20-21swapper/222:46:522
34812320,3sleep20-21swapper/222:46:522
20425993226,4cyclictest29710-21fschecks_count19:36:540
20425993226,4cyclictest29710-21fschecks_count19:36:540
20425993225,5cyclictest20418-21cyclictest23:48:340
258912310,3sleep30-21swapper/322:17:023
258912310,3sleep30-21swapper/322:17:023
20432993125,4cyclictest20418-21cyclictest23:06:581
20432993125,4cyclictest20418-21cyclictest23:06:581
20425993126,3cyclictest0-21swapper/020:21:410
20425993126,3cyclictest0-21swapper/020:21:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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