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2025-12-16 - 16:07

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 Tue Dec 16, 2025 13:37:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
95021110,2sleep30-21swapper/311:02:053
95021110,2sleep30-21swapper/311:02:053
748321050,2sleep30-21swapper/311:21:553
748321050,2sleep30-21swapper/311:21:553
17132900,3chrt0-21swapper/112:32:011
17132900,3chrt0-21swapper/112:32:011
117992890,3sleep30-21swapper/310:06:533
117992890,3sleep30-21swapper/310:06:533
306662790,2sleep20-21swapper/212:22:052
120712760,2sleep20-21swapper/208:40:042
120712760,2sleep20-21swapper/208:40:042
317802680,3chrt0-21swapper/312:26:563
228882680,3sleep122889-21cut07:41:541
228882680,3sleep122889-21cut07:41:541
271782670,2sleep10-21swapper/110:47:001
104202640,3sleep30-21swapper/310:01:593
104202640,3sleep30-21swapper/310:01:593
231072630,3sleep30-21swapper/307:41:563
231072630,3sleep30-21swapper/307:41:563
69072620,3sleep20-21swapper/208:26:532
69072620,3sleep20-21swapper/208:26:532
189302620,3sleep30-21swapper/307:31:553
189302620,3sleep30-21swapper/307:31:553
103442620,3sleep20-21swapper/210:01:592
103442620,3sleep20-21swapper/210:01:592
86342610,3chrt0-21swapper/309:57:003
207802560,3sleep30-21swapper/311:56:573
207802560,3sleep30-21swapper/311:56:573
139092560,3chrt0-21swapper/310:11:563
139092560,3chrt0-21swapper/310:11:563
321092530,3sleep131786-21/usr/sbin/munin08:06:541
321092530,3sleep131786-21/usr/sbin/munin08:06:541
302462530,2chrt30248-21grep08:01:550
283832530,4chrt0-21swapper/310:51:523
283832530,4chrt0-21swapper/310:51:523
121992530,3chrt0-21swapper/210:06:562
121992530,3chrt0-21swapper/210:06:562
38272520,3sleep20-21swapper/211:11:572
38272520,3sleep20-21swapper/211:11:572
221302520,1sleep10-21swapper/112:01:541
221302520,1sleep10-21swapper/112:01:541
14272520,3sleep30-21swapper/308:11:553
14272520,3sleep30-21swapper/308:11:553
17582510,4sleep11760-21fschecks_time11:06:541
17582510,4sleep11760-21fschecks_time11:06:541
125372480,3chrt0-21swapper/111:35:241
125372480,3chrt0-21swapper/111:35:241
227122470,4sleep30-21swapper/312:02:003
227122470,4sleep30-21swapper/312:02:003
11243994723,23cyclictest9384-21latency_hist10:00:040
205122450,3sleep20-21swapper/209:01:592
205122450,3sleep20-21swapper/209:01:592
187902450,3sleep20-21swapper/208:57:012
11243994420,22cyclictest0-21swapper/011:56:520
11243994420,22cyclictest0-21swapper/011:56:520
11243994416,3cyclictest30899-21sshd09:30:480
11243994416,3cyclictest30899-21sshd09:30:480
17502430,2sleep11751-21/usr/sbin/munin08:11:571
17502430,2sleep11751-21/usr/sbin/munin08:11:571
326662410,3sleep20-21swapper/212:28:522
11243994117,4cyclictest1641-21unixbench_multi09:37:030
11243994117,4cyclictest1641-21unixbench_multi09:37:030
11243994112,9cyclictest2190-21ls11:06:570
11243994112,9cyclictest2190-21ls11:06:570
13902400,3sleep20-21swapper/211:05:102
13902400,3sleep20-21swapper/211:05:102
11244993832,4cyclictest14198-21sh11:40:041
11244993832,4cyclictest14198-21sh11:40:041
11243993728,7cyclictest24704-21unixbench-2d09:12:040
11243993728,7cyclictest24704-21unixbench-2d09:12:040
11244993630,4cyclictest19258-21find10:40:381
11244993630,4cyclictest19258-21find10:40:381
240462350,3chrt0-21swapper/209:11:562
240462350,3chrt0-21swapper/209:11:562
11243993528,5cyclictest14218-21latency_hist11:40:040
11243993528,5cyclictest14218-21latency_hist11:40:040
11244993430,3cyclictest19258-21find12:37:011
11244993430,3cyclictest19258-21find12:37:011
11244993426,6cyclictest32260-21threads12:27:021
11243993326,5cyclictest547-21rs:main0
11243993326,5cyclictest547-21rs:main0
11244993226,4cyclictest18308-21runrttasks07:28:221
11244993226,4cyclictest18308-21runrttasks07:28:221
11243993225,5cyclictest25873-21latency_hist07:50:040
11243993225,5cyclictest22634-21switchtime09:07:030
11243993225,5cyclictest22634-21switchtime09:07:030
11243993224,6cyclictest22194-21fschecks_time12:01:540
11243993224,6cyclictest22194-21fschecks_time12:01:540
11244993124,5cyclictest30673-21ntp_offset08:02:001
11243993126,3cyclictest9913-21head08:32:040
11243993126,3cyclictest9913-21head08:32:040
11243993125,4cyclictest29867-21latency_hist10:55:040
11243993125,4cyclictest29867-21latency_hist10:55:040
181822300,2sleep3431rcuc/308:56:543
11244993026,3cyclictest11242-21cyclictest08:30:041
11244993026,3cyclictest11242-21cyclictest08:30:041
11244993025,3cyclictest32426-21kworker/u9:3-xprtiod10:35:041
11244993025,3cyclictest32426-21kworker/u9:3-xprtiod10:35:041
11244993024,4cyclictest30639-21idleruntime-cro09:30:041
11244993024,4cyclictest30639-21idleruntime-cro09:30:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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