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2026-09-12 - 16:15

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 Sep 12, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
948721250,3chrt0-21swapper/210:54:392
948721250,3chrt0-21swapper/210:54:392
1703321240,2sleep10-21swapper/112:44:241
1703321240,2sleep10-21swapper/112:44:241
261321090,3sleep30-21swapper/310:39:283
261321090,3sleep30-21swapper/310:39:283
261321090,3sleep30-21swapper/310:39:283
1001121020,3sleep110014-21needreboot08:04:331
203092940,2sleep020312-21proc_pri11:24:360
317682910,2chrt31752-21timerandwakeup11:54:361
317682910,2chrt31752-21timerandwakeup11:54:361
226242850,2chrt0-21swapper/211:29:402
226242850,2chrt0-21swapper/211:29:402
139422810,3sleep20-21swapper/212:34:322
315902690,3sleep10-21swapper/110:29:291
315902690,3sleep10-21swapper/110:29:291
100862660,2sleep129-21ksoftirqd/112:24:301
230562650,2sleep30-21swapper/310:04:393
174282640,2sleep117431-21grep09:49:371
174282640,2sleep117431-21grep09:49:371
230332570,3sleep30-21swapper/311:34:153
230332570,3sleep30-21swapper/311:34:153
324812540,2sleep20-21swapper/210:29:382
324812540,2sleep20-21swapper/210:29:382
281612500,2sleep20-21swapper/208:54:272
88712480,3chrt0-21swapper/310:54:323
88712480,3chrt0-21swapper/310:54:323
58792450,3chrt0-21swapper/312:14:273
86412430,2sleep1281ktimers/109:29:191
299782430,3sleep30-21swapper/310:24:333
299782430,3sleep30-21swapper/310:24:333
235762430,3sleep20-21swapper/210:09:162
135682430,3sleep30-21swapper/312:34:303
319142420,4sleep20-21swapper/209:04:282
45412400,2sleep04635-21sort10:44:290
45412400,2sleep04635-21sort10:44:290
303762400,2sleep30-21swapper/308:59:303
303762400,2sleep30-21swapper/308:59:303
322912390,3sleep1281ktimers/109:04:311
19522390,3sleep20-21swapper/210:34:412
19522390,3sleep20-21swapper/210:34:412
23027993832,4cyclictest23025-21cyclictest08:14:151
23027993832,4cyclictest23025-21cyclictest08:14:151
200272370,3sleep30-21swapper/311:24:313
23027993528,5cyclictest9855-21idleruntime-cro10:59:151
23027993528,5cyclictest9855-21idleruntime-cro10:59:151
23027993429,3cyclictest6682-21latency_hist09:24:151
23027993429,3cyclictest6682-21latency_hist09:24:151
23027993327,4cyclictest729-21dbus-daemon11:29:381
23027993327,4cyclictest729-21dbus-daemon11:29:381
23027993326,5cyclictest3044-21kernelversion10:39:321
23027993326,5cyclictest3044-21kernelversion10:39:321
23027993326,5cyclictest3044-21kernelversion10:39:321
23027993325,6cyclictest23025-21cyclictest12:09:311
23026993325,6cyclictest545-21in:imuxsock08:29:380
23026993325,6cyclictest545-21in:imuxsock08:29:380
252992320,4sleep10-21swapper/108:44:371
23027993225,5cyclictest9315-21cron12:24:161
23027993225,5cyclictest9315-21cron12:24:161
23027993225,5cyclictest19263-21latency_hist11:24:161
23027993225,5cyclictest19263-21latency_hist11:24:161
23027993224,6cyclictest14412-21latency_hist09:44:241
23026993225,5cyclictest7158-21fschecks_time09:24:290
55012310,4sleep20-21swapper/210:44:392
55012310,4sleep20-21swapper/210:44:392
23027993125,4cyclictest1784-21cron12:04:151
23027993125,4cyclictest1784-21cron12:04:151
23027993125,4cyclictest1784-21cron12:04:151
23027993124,5cyclictest27130-21fschecks_count11:44:291
23027993124,5cyclictest27130-21fschecks_count11:44:291
23026993122,7cyclictest2636-21processes07:44:360
23027993024,5cyclictest29307-21unixbench_singl08:54:381
23027993024,4cyclictest0-21swapper/109:44:151
23027993023,5cyclictest31170-21unixbench_singl08:59:391
23027993023,5cyclictest31170-21unixbench_singl08:59:391
23027993023,5cyclictest27725-21cut10:19:271
23027993023,5cyclictest27725-21cut10:19:271
23026993023,5cyclictest26442-21processes10:14:350
23027992924,4cyclictest14678-21systemd-journal09:11:381
23027992924,4cyclictest14678-21systemd-journal09:11:381
23027992923,4cyclictest14738-21latency_hist08:19:151
23026992925,3cyclictest23025-21cyclictest08:49:290
23026992921,6cyclictest9488-21fschecks_count08:04:280
23026992921,6cyclictest2413-21latency_hist10:39:180
23026992921,6cyclictest2413-21latency_hist10:39:180
23026992920,7cyclictest2882-21processes12:04:380
23026992920,7cyclictest2882-21processes12:04:380
23026992920,7cyclictest17865-21threads08:24:370
295872280,2sleep029765-21idleruntime10:24:310
295872280,2sleep029765-21idleruntime10:24:310
23027992824,2cyclictest0-21swapper/110:49:151
23027992824,2cyclictest0-21swapper/110:49:151
23027992822,5cyclictest31000-21kernelversion07:34:321
23027992822,5cyclictest31000-21kernelversion07:34:321
23027992822,5cyclictest26110-21threads11:39:361
23027992822,5cyclictest26110-21threads11:39:361
23027992822,4cyclictest643-21ntp_kernel_pll_07:39:351
23027992822,4cyclictest643-21ntp_kernel_pll_07:39:351
23027992822,4cyclictest23025-21cyclictest10:02:051
23027992822,4cyclictest23025-21cyclictest10:02:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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