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2026-06-01 - 05:59

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 Mon Jun 01, 2026 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
157312870,3sleep30-21swapper/321:58:043
157312870,3sleep30-21swapper/321:58:043
89812690,1sleep2351rcuc/223:07:582
89812690,1sleep2351rcuc/223:07:582
74592690,3sleep30-21swapper/300:33:013
74592690,3sleep30-21swapper/300:33:013
165112690,2sleep016510-21load23:27:580
165112690,2sleep016510-21load23:27:580
165112690,2sleep016510-21load23:27:580
244462680,2chrt24445-21wc20:57:470
244462680,2chrt24445-21wc20:57:470
89232600,2chrt0-21swapper/220:13:062
89232600,2chrt0-21swapper/220:13:062
32422600,2chrt3241-21interrupts22:52:571
32422600,2chrt3241-21interrupts22:52:571
17482600,2chrt0-21swapper/022:48:020
17482600,2chrt0-21swapper/022:48:020
309332580,3sleep30-21swapper/321:13:013
309332580,3sleep30-21swapper/321:13:013
309332580,3sleep30-21swapper/321:13:013
267042530,1chrt0-21swapper/222:28:022
147192530,2sleep00-21swapper/021:57:530
147192530,2sleep00-21swapper/021:57:530
66982520,2sleep30-21swapper/320:08:053
66982520,2sleep30-21swapper/320:08:053
36472520,3sleep30-21swapper/322:53:033
36472520,3sleep30-21swapper/322:53:033
163972490,2sleep30-21swapper/323:27:573
163972490,2sleep30-21swapper/323:27:573
163972490,2sleep30-21swapper/323:27:573
294062480,3sleep20-21swapper/222:37:422
294062480,3sleep20-21swapper/222:37:422
252742470,4sleep20-21swapper/220:58:012
252742470,4sleep20-21swapper/220:58:012
18178994740,5cyclictest0-21swapper/000:02:580
18178994740,5cyclictest0-21swapper/000:02:580
18178994740,5cyclictest0-21swapper/000:02:580
173722470,2sleep20-21swapper/222:03:052
173722470,2sleep20-21swapper/222:03:052
302972450,2chrt0-21swapper/300:03:103
302972450,2chrt0-21swapper/300:03:103
302972450,2chrt0-21swapper/300:03:103
18178994439,3cyclictest0-21swapper/000:02:480
18178994439,3cyclictest0-21swapper/000:02:480
291172390,3sleep20-21swapper/200:02:532
291172390,3sleep20-21swapper/200:02:532
291172390,3sleep20-21swapper/200:02:532
18178993933,4cyclictest29356-21latency_hist22:37:400
18178993933,4cyclictest29356-21latency_hist22:37:400
18178993932,5cyclictest1257-21sendmail21:22:410
9122380,3sleep30-21swapper/300:17:543
9122380,3sleep30-21swapper/300:17:543
18178993816,5cyclictest201rcuc/023:22:390
18178993816,5cyclictest201rcuc/023:22:390
55852370,3sleep016-21ksoftirqd/022:58:030
55852370,3sleep016-21ksoftirqd/022:58:030
18178993716,19cyclictest201rcuc/021:55:570
59862360,2sleep06044-21cut21:33:010
59862360,2sleep06044-21cut21:33:010
290232360,3sleep20-21swapper/221:08:022
290232360,3sleep20-21swapper/221:08:022
290232360,3sleep20-21swapper/221:08:022
18178993513,5cyclictest201rcuc/023:55:310
90882340,1sleep09147-21ntp_kernel_pll_23:08:010
90882340,1sleep09147-21ntp_kernel_pll_23:08:010
18178993427,6cyclictest10164-21unixbench-2d21:43:040
18178993427,6cyclictest10164-21unixbench-2d21:43:040
18178993427,6cyclictest10164-21unixbench-2d21:43:040
18178993411,6cyclictest171ktimers/019:54:390
18178993411,6cyclictest171ktimers/019:54:390
1818399332,22cyclictest28885-21chrt00:02:463
1818399332,22cyclictest28885-21chrt00:02:463
18179993326,5cyclictest25922-21processes19:33:021
18179993326,5cyclictest25922-21processes19:33:021
18179993325,5cyclictest10310-21latency_hist00:42:481
18178993328,4cyclictest4991-21sh21:32:400
18178993328,4cyclictest4991-21sh21:32:400
18178993328,4cyclictest4991-21sh21:32:400
18178993327,4cyclictest171ktimers/022:30:140
18178993324,7cyclictest14337-21threads20:28:040
18178993324,7cyclictest14337-21threads20:28:040
18178993324,7cyclictest10415-21fschecks_count23:12:520
18178993324,7cyclictest10415-21fschecks_count23:12:520
18178993320,3cyclictest90-1pr/ttyS019:34:050
18178993320,3cyclictest90-1pr/ttyS019:34:050
18178993318,4cyclictest90-1pr/ttyS000:17:050
18178993318,4cyclictest90-1pr/ttyS000:17:050
28212320,7chrt2824-21wc19:58:010
18179993226,4cyclictest31836-21latency_hist21:17:431
18179993226,4cyclictest31836-21latency_hist21:17:431
18179993226,4cyclictest31836-21latency_hist21:17:431
18179993226,4cyclictest27321-21cut19:37:541
18179993226,4cyclictest27321-21cut19:37:541
18178993227,3cyclictest0-21swapper/020:47:410
18178993227,3cyclictest0-21swapper/020:47:410
18178993216,4cyclictest181rcu_preempt23:38:460
18178993216,4cyclictest181rcu_preempt23:38:460
122652320,2sleep20-21swapper/220:23:032
122652320,2sleep20-21swapper/220:23:032
293922310,2sleep10-21swapper/122:37:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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