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2026-08-01 - 05:34

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 Aug 01, 2026 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1036021140,3sleep30-21swapper/321:58:483
1036021140,3sleep30-21swapper/321:58:483
2619221050,2sleep30-21swapper/322:38:563
2619221050,2sleep30-21swapper/322:38:563
2619221050,2sleep30-21swapper/322:38:563
320021030,3sleep30-21swapper/300:33:583
320021030,3sleep30-21swapper/300:33:583
17112990,2sleep00-21swapper/020:08:500
17112990,2sleep00-21swapper/020:08:500
3482910,1chrt0-21swapper/020:03:560
3482910,1chrt0-21swapper/020:03:560
238712770,2sleep023872-21/usr/sbin/munin19:38:590
238712770,2sleep023872-21/usr/sbin/munin19:38:590
238712770,2sleep023872-21/usr/sbin/munin19:38:590
203662770,2sleep120486-21grep20:58:491
203662770,2sleep120486-21grep20:58:491
203662770,2sleep120486-21grep20:58:491
52732660,3sleep30-21swapper/323:08:593
52732660,3sleep30-21swapper/323:08:593
145982650,1sleep00-21swapper/020:43:440
145982650,1sleep00-21swapper/020:43:440
25552620,3sleep20-21swapper/220:09:002
25552620,3sleep20-21swapper/220:09:002
193972600,2chrt19396-21sshd22:22:101
193972600,2chrt19396-21sshd22:22:101
193972600,2chrt19396-21sshd22:22:101
258742540,2sleep025897-21cpu21:13:480
258742540,2sleep025897-21cpu21:13:480
222002540,2sleep10-21swapper/123:54:001
222002540,2sleep10-21swapper/123:54:001
185212540,3sleep00-21swapper/022:18:550
185212540,3sleep00-21swapper/022:18:550
185212540,3sleep00-21swapper/022:18:550
13746995346,3cyclictest0-21swapper/100:03:441
13746995346,3cyclictest0-21swapper/100:03:441
13746995346,3cyclictest0-21swapper/100:03:441
123052530,2sleep112403-21fschecks_time22:03:501
123052530,2sleep112403-21fschecks_time22:03:501
13741995233,16cyclictest24919-21latency_hist00:03:490
13741995233,16cyclictest24919-21latency_hist00:03:490
13741995233,16cyclictest24919-21latency_hist00:03:490
163872500,2chrt0-21swapper/222:13:512
163872500,2chrt0-21swapper/222:13:512
203082490,3chrt0-21swapper/222:23:522
203082490,3chrt0-21swapper/222:23:522
314592480,2sleep20-21swapper/221:28:442
314592480,2sleep20-21swapper/221:28:442
219282480,2sleep00-21swapper/019:33:570
277162460,3sleep30-21swapper/322:43:513
277162460,3sleep30-21swapper/322:43:513
160492460,2chrt0-21swapper/223:38:532
160492460,2chrt0-21swapper/223:38:532
160492460,2chrt0-21swapper/223:38:532
204882440,3sleep20-21swapper/220:58:492
204882440,3sleep20-21swapper/220:58:492
204882440,3sleep20-21swapper/220:58:492
64512430,2sleep10-21swapper/121:48:421
64512430,2sleep10-21swapper/121:48:421
13741994321,20cyclictest2620-21head23:03:500
13741994321,20cyclictest2620-21head23:03:500
245572420,4sleep30-21swapper/322:33:593
245572420,4sleep30-21swapper/322:33:593
13741994217,22cyclictest2208-21latency_hist23:03:450
13741994217,22cyclictest2208-21latency_hist23:03:450
13741994217,22cyclictest2208-21latency_hist23:03:450
13741994119,20cyclictest8745-21gltestperf21:53:510
13741994119,20cyclictest8745-21gltestperf21:53:510
13741994112,3cyclictest0-21swapper/020:20:060
13741994112,3cyclictest0-21swapper/020:20:060
235052400,3sleep30-21swapper/321:05:093
1375299402,28cyclictest24653-21taskset00:03:412
1375299402,28cyclictest24653-21taskset00:03:412
1375299402,28cyclictest24653-21taskset00:03:412
13741994018,20cyclictest0-21swapper/022:03:580
13741994018,20cyclictest0-21swapper/022:03:580
13741994017,21cyclictest0-21swapper/023:09:000
13741994017,21cyclictest0-21swapper/023:09:000
71432390,3chrt0-21swapper/123:14:001
71432390,3chrt0-21swapper/123:14:001
13741993916,20cyclictest0-21swapper/023:19:040
13741993916,20cyclictest0-21swapper/023:19:040
1374199391,15cyclictest27028-21latency_hist00:13:480
1374199391,12cyclictest14475-21ls22:08:500
1374199391,12cyclictest14475-21ls22:08:500
13741993910,4cyclictest0-21swapper/000:33:580
13741993910,4cyclictest0-21swapper/000:33:580
138422380,3sleep20-21swapper/220:38:592
138422380,3sleep20-21swapper/220:38:592
1374699386,6cyclictest281ktimers/121:10:381
1374699386,6cyclictest281ktimers/121:10:381
1374199383,29cyclictest25490-21/usr/sbin/munin00:03:560
1374199383,29cyclictest25490-21/usr/sbin/munin00:03:560
13741993813,23cyclictest15919-21kernelversion23:38:520
13741993813,23cyclictest15919-21kernelversion23:38:520
13741993813,23cyclictest15919-21kernelversion23:38:520
1374199381,12cyclictest29942-21ps22:48:540
1374199381,12cyclictest29942-21ps22:48:540
1374199381,11cyclictest18949-21sh23:48:360
1374199381,11cyclictest18949-21sh23:48:360
1374199380,10cyclictest26374-21latency_hist19:48:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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