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2025-12-19 - 05:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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 rack2slot7s.osadl.org (updated Thu Dec 18, 2025 19:55:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1926067996447,11cyclictest2232097-21dhry2reg17:44:081
1926066996328,28cyclictest12450irq/32-eth018:09:420
1926068996048,8cyclictest2747060-21sh18:10:262
1926067995749,5cyclictest2234060-21execl17:49:561
1926066995750,4cyclictest2234061-21execl17:49:460
1926067995343,7cyclictest2148457-21sh17:39:441
1926067995343,7cyclictest2148457-21sh17:39:441
1926068995243,6cyclictest2169467-21multi.sh17:40:532
1926067995243,6cyclictest2237805-21sh17:59:451
1926066995144,4cyclictest2740707-21sh18:10:120
1926068995040,6cyclictest2736273-21rm18:10:022
1926067994940,6cyclictest2771074-21sh18:11:231
1926067994940,5cyclictest2729458-21multi.sh18:09:421
1926068994837,5cyclictest0-21swapper/217:49:562
1926066994637,7cyclictest2161598-21multi.sh17:40:350
1926066994438,4cyclictest2145848-21sh17:39:330
1926066994438,4cyclictest2145848-21sh17:39:330
1926068994334,6cyclictest2116311-21cron17:35:012
1926068994232,6cyclictest2148761-21ntpq17:39:462
1926068994232,6cyclictest2148761-21ntpq17:39:462
1926066994132,6cyclictest0-21swapper/017:58:230
1926066994129,9cyclictest0-21swapper/017:34:460
192606899402,28cyclictest2238734-21Run18:01:392
1926067994033,4cyclictest2376109-21spawn18:03:371
1926066994032,5cyclictest151ktimers/017:19:440
1926066994032,5cyclictest151ktimers/017:19:440
1926066994032,3cyclictest151ktimers/017:29:430
1926068993927,9cyclictest1927508-21munin-plugin-st17:10:012
1926066993930,7cyclictest2238829-21Run18:02:220
1926067993731,3cyclictest0-21swapper/117:50:571
1926067993731,3cyclictest0-21swapper/117:50:571
1926067993729,5cyclictest1927541-21latency_hist17:10:011
1926068993425,6cyclictest0-21swapper/217:50:172
1926068993425,6cyclictest0-21swapper/217:50:172
1926068993423,6cyclictest2236953-21fstime17:57:142
1926068993411,6cyclictest36-21ksoftirqd/217:29:412
1926067993428,4cyclictest2085052-21spawn17:34:431
1926067993426,5cyclictest2813443-21systemd-run18:20:011
1926067993425,6cyclictest564-21dbus-daemon17:30:011
1926066993426,5cyclictest1931294-21fschecks_count17:24:350
1926068993325,5cyclictest2813402-21ls18:20:002
1926068993325,5cyclictest1923588-21kworker/u8:15+xprtiod17:20:002
1926068993325,5cyclictest1923588-21kworker/u8:15+xprtiod17:20:002
1926067993327,3cyclictest0-21swapper/118:40:011
192606799331,28cyclictest1931001-21fstime17:24:451
192606699335,4cyclictest171rcu_preempt18:29:490
1926066993321,9cyclictest0-21swapper/017:50:220
1926066993321,9cyclictest0-21swapper/017:50:220
192606899329,18cyclictest351ktimers/217:14:452
192606899329,18cyclictest351ktimers/217:14:452
1926068993121,7cyclictest2813779-21aten_r2power_fr18:24:332
1926068993121,7cyclictest2813779-21aten_r2power_fr18:24:332
1926066993125,3cyclictest0-21swapper/018:20:010
1926066993023,5cyclictest2817794-21munin-plugin-st18:35:010
1926066992920,7cyclictest1928339-21needreboot17:14:410
1926066992920,7cyclictest1928339-21needreboot17:14:410
192606899289,3cyclictest171rcu_preempt17:20:452
192606899286,11cyclictest577-21mta-sts-daemon18:34:422
1926068992822,3cyclictest0-21swapper/218:40:012
1926066992823,3cyclictest1166-21mta-sts-daemon18:24:420
1926066992823,3cyclictest1166-21mta-sts-daemon18:24:420
1926066992820,6cyclictest1926982-21ntp_kernel_pll_17:09:430
1926067992718,6cyclictest563-21avahi-daemon17:19:161
1926067992718,6cyclictest563-21avahi-daemon17:19:161
192606899266,7cyclictest36-21ksoftirqd/217:05:012
192606899263,14cyclictest2815496-21if_eth018:29:362
1926067992616,7cyclictest1928968-21idleruntime-cro17:15:001
1926067992616,7cyclictest1928968-21idleruntime-cro17:15:001
1926067992516,7cyclictest2814087-21kernelversion18:24:381
1926067992516,7cyclictest2814087-21kernelversion18:24:381
1926067992515,7cyclictest2815708-21needreboot18:29:391
1926067992417,4cyclictest1168-21mta-sts-daemon18:34:321
1926066992217,3cyclictest0-21swapper/018:39:530
192606699201,17cyclictest1926065-21cyclictest17:05:010
192606999196,9cyclictest0-21swapper/317:56:463
192606999183,8cyclictest0-21swapper/318:01:133
192606999173,6cyclictest0-21swapper/317:34:423
192606999172,9cyclictest0-21swapper/317:49:423
1926067991712,2cyclictest0-21swapper/117:05:011
192606999165,6cyclictest0-21swapper/317:50:353
192606999165,6cyclictest0-21swapper/317:50:353
192606999162,8cyclictest0-21swapper/318:09:293
192606999154,5cyclictest0-21swapper/317:39:403
192606999154,5cyclictest0-21swapper/317:39:403
192606999153,8cyclictest0-21swapper/317:41:213
192606999151,8cyclictest0-21swapper/318:10:313
192606999142,7cyclictest0-21swapper/317:19:453
192606999142,7cyclictest0-21swapper/317:19:453
192606999142,6cyclictest0-21swapper/317:24:433
192606999141,6cyclictest0-21swapper/318:34:413
192606999131,7cyclictest0-21swapper/317:09:423
192606999121,6cyclictest0-21swapper/318:24:423
192606999121,6cyclictest0-21swapper/318:24:423
192606999121,6cyclictest0-21swapper/317:15:003
192606999121,6cyclictest0-21swapper/317:15:003
192606999111,6cyclictest0-21swapper/318:39:433
192606999111,6cyclictest0-21swapper/318:30:003
192606999111,6cyclictest0-21swapper/318:20:003
192606999111,6cyclictest0-21swapper/317:26:583
19260699991,4cyclictest0-21swapper/317:05:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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