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2025-12-15 - 01:02

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 Sun Dec 14, 2025 13:37:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
83822900,2sleep19201-21cyclictest10:01:561
83822900,2sleep19201-21cyclictest10:01:561
264882850,3chrt0-21swapper/309:22:023
264882850,3chrt0-21swapper/309:22:023
102292800,3sleep20-21swapper/210:06:552
52812770,4sleep20-21swapper/211:21:532
313412710,3chrt31346-21gltestperf12:31:530
211262680,3sleep20-21swapper/207:41:562
211262680,3sleep20-21swapper/207:41:562
321722620,2sleep10-21swapper/109:38:281
321722620,2sleep10-21swapper/109:38:281
174872620,1chrt0-21swapper/107:31:581
267522600,3sleep20-21swapper/207:57:002
267522600,3sleep20-21swapper/207:57:002
307822590,3chrt0-21swapper/111:01:581
307822590,3chrt0-21swapper/111:01:581
325072570,2sleep30-21swapper/308:11:593
325072570,2sleep30-21swapper/308:11:593
51582540,5sleep15153-21unixbench_multi09:52:031
174312540,3sleep20-21swapper/209:00:022
174312540,3sleep20-21swapper/209:00:022
274622510,3chrt27466-21gltestperf09:26:540
274622510,3chrt27466-21gltestperf09:26:540
295532500,3sleep30-21swapper/309:31:553
280212500,3chrt0-21swapper/309:27:013
280212500,3chrt0-21swapper/309:27:013
94642490,3sleep10-21swapper/111:31:571
94642490,3sleep10-21swapper/111:31:571
147522480,4sleep114749-21grep08:51:571
147522480,4sleep114749-21grep08:51:571
147522480,4sleep114749-21grep08:51:571
316642470,3sleep30-21swapper/311:05:053
316642470,3sleep30-21swapper/311:05:053
236902460,2sleep30-21swapper/309:16:523
236902460,2sleep30-21swapper/309:16:523
236902460,2sleep30-21swapper/309:16:523
260752420,4sleep20-21swapper/210:50:052
260752420,4sleep20-21swapper/210:50:052
242442420,1sleep10-21swapper/110:45:051
84692410,4sleep30-21swapper/310:01:583
84692410,4sleep30-21swapper/310:01:583
188752410,3sleep30-21swapper/309:02:003
188752410,3sleep30-21swapper/309:02:003
188752410,3sleep30-21swapper/309:02:003
224662390,3chrt0-21swapper/312:06:563
154912390,3sleep20-21swapper/211:47:012
134032390,2sleep10-21swapper/110:16:511
134032390,2sleep10-21swapper/110:16:511
160202370,2sleep116022-21sed11:50:061
9202993628,6cyclictest10086-21kernelversion10:06:540
9203993529,5cyclictest572-21cups-browsed08:36:591
9203993529,5cyclictest572-21cups-browsed08:36:591
9203993527,6cyclictest446-21fschecks_time09:41:521
148292350,4sleep30-21swapper/311:46:543
9202993427,5cyclictest19534-21latency_hist12:00:020
35642340,3sleep20-21swapper/208:21:552
35642340,3sleep20-21swapper/208:21:552
35642340,3sleep20-21swapper/208:21:552
304632340,1sleep030575-21load11:01:540
304632340,1sleep030575-21load11:01:540
274342340,3sleep30-21swapper/312:21:513
266932340,1sleep126026-21/usr/sbin/munin07:56:591
266932340,1sleep126026-21/usr/sbin/munin07:56:591
9203993329,3cyclictest29672-21kernelversion12:26:531
9203993329,3cyclictest29672-21kernelversion12:26:531
9202993325,6cyclictest19307-21netstat07:36:560
9202993325,6cyclictest19307-21netstat07:36:560
9203993226,4cyclictest9201-21cyclictest09:17:021
9203993226,4cyclictest9201-21cyclictest09:17:021
9203993226,4cyclictest9201-21cyclictest09:17:021
9203993226,4cyclictest1346-21avahi-daemon09:22:001
9203993226,4cyclictest1346-21avahi-daemon09:22:001
9203993225,5cyclictest9201-21cyclictest12:31:521
9203993223,7cyclictest22244-21kernelversion12:06:531
9203993222,8cyclictest17456-21latency_hist09:00:021
9203993222,8cyclictest17456-21latency_hist09:00:021
9202993224,6cyclictest20876-21unixbench_singl09:07:030
9202993224,6cyclictest20876-21unixbench_singl09:07:030
9202993222,7cyclictest21493-21processes10:36:570
190232320,3sleep20-21swapper/210:31:522
190232320,3sleep20-21swapper/210:31:522
9203993125,4cyclictest18896-21timerwakeupswit09:02:001
9203993125,4cyclictest18896-21timerwakeupswit09:02:001
9203993125,4cyclictest18896-21timerwakeupswit09:02:001
9203993124,5cyclictest9201-21cyclictest11:43:541
9203993123,6cyclictest11815-21sshd08:44:091
9203993123,6cyclictest11815-21sshd08:44:091
9203993123,6cyclictest11292-21sshd10:10:091
9203993123,6cyclictest11292-21sshd10:10:091
9202993123,6cyclictest10165-21latency_hist08:40:060
9202993123,6cyclictest10165-21latency_hist08:40:060
158912310,2sleep115892-21ntp_offset10:21:581
9203993023,5cyclictest9201-21cyclictest11:07:211
9203993021,7cyclictest5508-21netstat08:26:571
9203993021,7cyclictest5508-21netstat08:26:571
9203993021,7cyclictest5508-21netstat08:26:571
9202993025,4cyclictest26386-21cron12:17:020
9202993018,10cyclictest550-21cron10:25:020
9203992925,2cyclictest0-21swapper/111:55:021
9203992923,5cyclictest3661-21kernelversion11:16:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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