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2026-09-07 - 15:14

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 Mon Sep 07, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2833121290,2sleep20-21swapper/212:14:312
2833121290,2sleep20-21swapper/212:14:312
80372790,2sleep0201rcuc/011:19:340
80372790,2sleep0201rcuc/011:19:340
141992740,3sleep20-21swapper/210:09:332
191392730,3sleep10-21swapper/111:49:341
191392730,3sleep10-21swapper/111:49:341
235422620,2sleep123546-21wc10:34:331
235422620,2sleep123546-21wc10:34:331
39542600,2chrt0-21swapper/311:09:323
39542600,2chrt0-21swapper/311:09:323
323592570,2sleep30-21swapper/312:24:333
323592570,2sleep30-21swapper/312:24:333
239802520,2chrt0-21swapper/107:44:241
239802520,2chrt0-21swapper/107:44:241
12617995224,8cyclictest700-21192.168.115.40-manager08:00:021
12617995224,8cyclictest700-21192.168.115.40-manager08:00:021
145172510,3sleep20-21swapper/211:39:222
145172510,3sleep20-21swapper/211:39:222
81362480,2sleep20-21swapper/208:29:232
122682480,2sleep20-21swapper/210:04:352
122682480,2sleep20-21swapper/210:04:352
305372470,14sleep130541-21unixbench_multi12:19:331
305372470,14sleep130541-21unixbench_multi12:19:331
12617994721,11cyclictest7084-21taskset09:52:231
12617994721,11cyclictest7084-21taskset09:52:231
61232460,3sleep20-21swapper/208:24:172
61232460,3sleep20-21swapper/208:24:172
14302460,8sleep1281ktimers/111:04:231
14302460,8sleep1281ktimers/111:04:231
12617994620,9cyclictest18849-21taskset08:56:341
12617994620,9cyclictest18849-21taskset08:56:341
12617994620,12cyclictest20143-21taskset10:26:121
12617994617,11cyclictest22495-21taskset09:05:181
42662450,3sleep20-21swapper/212:39:122
12617994530,12cyclictest700-21192.168.115.40-manager10:14:021
12617994520,10cyclictest5720-21taskset08:21:411
12617994520,10cyclictest5720-21taskset08:21:411
12617994519,16cyclictest17750-21taskset11:46:551
12617994519,16cyclictest17750-21taskset11:46:551
12617994519,11cyclictest633-21cat12:29:171
12617994519,11cyclictest633-21cat12:29:171
12617994518,11cyclictest10174-21taskset11:26:001
40562440,2sleep14057-21gltestperf09:44:241
12617994419,7cyclictest0-21swapper/110:22:081
12617994419,7cyclictest0-21swapper/110:22:081
12617994418,15cyclictest10893-21taskset10:03:071
12617994418,15cyclictest10893-21taskset10:03:071
12617994418,11cyclictest8815-21chrt09:55:371
12617994418,11cyclictest8815-21chrt09:55:371
12617994418,11cyclictest3344-21chrt09:42:471
12617994418,11cyclictest3344-21chrt09:42:471
12617994417,12cyclictest15755-21taskset11:40:301
12617994417,12cyclictest15755-21taskset11:40:301
12617994416,11cyclictest26466-21switchtime07:49:321
65872430,2chrt0-21swapper/309:49:323
65872430,2chrt0-21swapper/309:49:323
59362430,3sleep20-21swapper/211:14:332
12617994336,5cyclictest700-21192.168.115.40-manager09:26:001
12617994336,5cyclictest700-21192.168.115.40-manager09:26:001
12617994335,6cyclictest700-21192.168.115.40-manager12:05:061
12617994332,9cyclictest700-21192.168.115.40-manager09:04:021
12617994332,9cyclictest700-21192.168.115.40-manager09:04:021
12617994331,10cyclictest700-21192.168.115.40-manager10:57:441
12617994320,8cyclictest2574-21sed12:34:191
12617994320,7cyclictest9389-21taskset08:30:211
12617994319,9cyclictest23132-21taskset07:41:081
12617994319,9cyclictest23132-21taskset07:41:081
35412420,2sleep03545-21switchtime12:34:310
232742420,3chrt0-21swapper/209:09:232
12617994237,3cyclictest700-21192.168.115.40-manager09:32:001
12617994237,3cyclictest700-21192.168.115.40-manager09:32:001
12617994230,9cyclictest700-21192.168.115.40-manager08:34:181
12617994230,9cyclictest700-21192.168.115.40-manager08:34:181
12617994219,10cyclictest23213-21taskset12:00:221
12617994219,10cyclictest23213-21taskset12:00:221
12617994218,8cyclictest777-21chrt11:01:261
12617994218,8cyclictest777-21chrt11:01:261
12617994218,10cyclictest3963-21taskset08:18:291
12617994217,8cyclictest27120-21taskset12:12:291
12617994133,6cyclictest700-21192.168.115.40-manager11:13:491
12617994133,6cyclictest700-21192.168.115.40-manager11:13:491
12617994131,7cyclictest700-21192.168.115.40-manager10:48:371
12617994119,8cyclictest28856-21runrttasks07:57:381
12617994118,9cyclictest21443-21seq11:56:321
12617994118,9cyclictest21443-21seq11:56:321
12617994118,10cyclictest16844-21taskset08:49:451
12617994118,10cyclictest16844-21taskset08:49:451
12611994123,5cyclictest74-21hwrng08:47:040
202202400,3sleep20-21swapper/207:34:242
202202400,3sleep20-21swapper/207:34:242
173582400,2sleep20-21swapper/208:54:162
173582400,2sleep20-21swapper/208:54:162
12617994034,5cyclictest700-21192.168.115.40-manager09:16:591
12617994034,5cyclictest700-21192.168.115.40-manager09:16:591
12617994033,5cyclictest700-21192.168.115.40-manager11:20:181
12617994033,5cyclictest700-21192.168.115.40-manager11:20:181
12617994029,9cyclictest700-21192.168.115.40-manager09:10:411
12617994029,8cyclictest24435-21df_inode10:39:231
12617994029,8cyclictest24435-21df_inode10:39:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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