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2025-08-26 - 16:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 792 highest latencies:
System rack9slot4s (updated Tue Aug 26, 2025 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
198199911451124,17cyclictest1299-21gzip07:59:551
198199911071087,17cyclictest20014-21wget07:25:121
194642561517,29sleep00-21swapper/007:21:540
194562464419,30sleep10-21swapper/107:21:481
1981899233224,6cyclictest0-21swapper/007:25:120
228332980,5sleep122824-21ssh10:10:311
248082960,7sleep00-21swapper/012:26:510
312202770,3sleep00-21swapper/012:00:170
19818997357,12cyclictest0-21swapper/007:59:560
257592660,2sleep125760-21needreboot09:40:241
280632580,7sleep11981999cyclictest10:50:131
19819995316,6cyclictest22-21ksoftirqd/110:05:211
117242530,2sleep111725-21sh10:00:011
19819995216,6cyclictest22-21ksoftirqd/111:29:341
1981999518,7cyclictest22-21ksoftirqd/109:59:281
1981999517,5cyclictest22-21ksoftirqd/112:46:461
1981999517,5cyclictest22-21ksoftirqd/112:46:451
1981999516,6cyclictest22-21ksoftirqd/111:49:021
19819995113,5cyclictest22-21ksoftirqd/111:14:231
1981999509,6cyclictest22-21ksoftirqd/110:20:331
1981999509,6cyclictest22-21ksoftirqd/109:28:401
1981999509,6cyclictest22-21ksoftirqd/109:17:281
1981999508,6cyclictest22-21ksoftirqd/110:18:111
1981999508,10cyclictest22-21ksoftirqd/110:26:141
19819995015,9cyclictest22-21ksoftirqd/111:04:431
19819995014,6cyclictest22-21ksoftirqd/112:35:281
1981999498,6cyclictest22-21ksoftirqd/109:47:211
1981999498,5cyclictest22-21ksoftirqd/110:42:471
1981999497,6cyclictest22-21ksoftirqd/112:50:451
19819994912,6cyclictest22-21ksoftirqd/111:40:131
1981999489,6cyclictest22-21ksoftirqd/111:23:121
1981999486,6cyclictest22-21ksoftirqd/112:20:101
1981999486,6cyclictest22-21ksoftirqd/109:23:351
19819994819,10cyclictest22-21ksoftirqd/112:40:321
19819994813,9cyclictest22-21ksoftirqd/111:31:401
19819994812,6cyclictest22-21ksoftirqd/109:10:011
19819994811,7cyclictest22-21ksoftirqd/112:27:451
1981999479,11cyclictest22-21ksoftirqd/112:11:311
1981999478,11cyclictest22-21ksoftirqd/112:19:281
19819994712,6cyclictest22-21ksoftirqd/108:15:211
19819994711,6cyclictest22-21ksoftirqd/112:07:111
19819994710,6cyclictest22-21ksoftirqd/109:50:311
19819994710,6cyclictest22-21ksoftirqd/108:00:291
19819994710,5cyclictest22-21ksoftirqd/109:00:131
1981999469,6cyclictest22-21ksoftirqd/110:30:181
1981999469,6cyclictest22-21ksoftirqd/108:45:221
1981999462,5cyclictest22-21ksoftirqd/112:30:531
19819994615,6cyclictest22-21ksoftirqd/109:35:281
19819994611,6cyclictest22-21ksoftirqd/111:38:511
19819994611,6cyclictest22-21ksoftirqd/111:09:111
1981999459,5cyclictest22-21ksoftirqd/111:55:191
1981999458,6cyclictest22-21ksoftirqd/110:55:241
1981999458,6cyclictest22-21ksoftirqd/110:45:211
1981999452,5cyclictest22-21ksoftirqd/112:00:291
19819994514,5cyclictest22-21ksoftirqd/107:45:091
1981999449,6cyclictest22-21ksoftirqd/108:40:161
1981999441,6cyclictest22-21ksoftirqd/109:10:591
1981999441,13cyclictest22-21ksoftirqd/109:32:451
19818994410,23cyclictest17653-21aten_r4power_en12:20:130
1981999439,6cyclictest22-21ksoftirqd/111:15:141
1981999438,6cyclictest22-21ksoftirqd/108:50:171
1981999437,10cyclictest22-21ksoftirqd/111:51:471
1981999429,5cyclictest22-21ksoftirqd/107:40:181
1981999427,6cyclictest22-21ksoftirqd/110:38:581
19819994221,5cyclictest22-21ksoftirqd/107:51:091
19819994219,4cyclictest22-21ksoftirqd/107:35:251
19819994211,5cyclictest22-21ksoftirqd/108:07:571
1981999417,4cyclictest81rcu_preempt07:30:151
1981999416,4cyclictest81rcu_preempt08:20:231
1981999406,6cyclictest22-21ksoftirqd/108:30:171
19819994026,4cyclictest22-21ksoftirqd/108:25:181
19819994024,4cyclictest22-21ksoftirqd/108:55:291
1981999396,5cyclictest22-21ksoftirqd/108:10:091
19818993916,7cyclictest18915-21memory10:40:250
19819993822,4cyclictest22-21ksoftirqd/108:35:281
1981899371,14cyclictest18769-21ssh09:33:340
1981899364,4cyclictest81rcu_preempt12:36:310
1981899363,20cyclictest0-21swapper/007:50:210
1981899361,20cyclictest25586-21irqstats09:40:220
1981899356,5cyclictest81rcu_preempt11:10:340
1981899356,5cyclictest81rcu_preempt09:35:220
1981899355,5cyclictest81rcu_preempt10:48:170
1981899354,4cyclictest81rcu_preempt11:16:350
1981899351,15cyclictest0-21swapper/010:01:200
1981899351,13cyclictest0-21swapper/010:35:550
179282351,30sleep017939-21ssh11:45:560
1981899345,4cyclictest81rcu_preempt10:51:120
1981899344,4cyclictest81rcu_preempt09:56:420
1981899343,26cyclictest2838-21iostat_ios09:50:200
1981899342,16cyclictest28000-21irqstats12:30:250
1981899341,7cyclictest3339-21ssh09:17:110
167062341,29sleep016716-21ssh12:52:390
72472331,28sleep07249-21ssh09:20:490
1981899337,5cyclictest254502processes11:20:270
1981899334,4cyclictest81rcu_preempt12:07:550
1981899334,4cyclictest81rcu_preempt11:51:250
1981899334,4cyclictest81rcu_preempt10:55:250
1981899334,10cyclictest81rcu_preempt12:11:510
1981899333,4cyclictest81rcu_preempt11:04:290
1981899332,17cyclictest11689-21df_inode11:40:160
1981899331,8cyclictest0-21swapper/012:46:200
1981899331,8cyclictest0-21swapper/012:46:190
1981899331,7cyclictest3362-21munin-run10:25:000
19818993312,4cyclictest16606-21ssh10:05:060
1981899327,4cyclictest81rcu_preempt11:30:220
1981899327,12cyclictest17281-21tune2fs08:40:200
1981899324,5cyclictest81rcu_preempt12:15:220
1981899324,5cyclictest81rcu_preempt10:25:250
1981899324,4cyclictest81rcu_preempt11:55:130
1981899323,4cyclictest81rcu_preempt11:25:170
1981899323,4cyclictest81rcu_preempt10:17:300
1981899323,4cyclictest81rcu_preempt09:46:220
1981899323,4cyclictest81rcu_preempt09:11:240
1981899322,4cyclictest81rcu_preempt11:37:090
19818993223,6cyclictest10241-21ssh10:30:590
1981899322,18cyclictest26822-21irqstats09:05:260
1981899322,16cyclictest25608-21/usr/sbin/munin07:35:390
1981899321,5cyclictest81rcu_preempt10:11:590
1981899321,26cyclictest18701-21/usr/sbin/munin08:45:100
1981899321,12cyclictest135522ssh09:27:590
1981899321,11cyclictest0-21swapper/011:09:040
50822311,5sleep00-21swapper/008:07:340
1981899315,4cyclictest81rcu_preempt12:40:300
1981899312,4cyclictest81rcu_preempt07:30:150
19818993113,5cyclictest21226-21sort08:50:230
1981899311,19cyclictest16279-21taskset08:36:340
1981899310,4cyclictest81rcu_preempt08:16:220
1981899304,13cyclictest0-21swapper/008:00:220
1981899301,16cyclictest22497-21/usr/sbin/munin08:55:130
1981899301,15cyclictest10209-21/usr/sbin/munin08:20:280
1981899301,13cyclictest12183-21sort08:25:280
1981899299,6cyclictest25144-21ntpdc09:00:240
1981899292,4cyclictest81rcu_preempt08:30:290
1981899291,25cyclictest111-21usb-storage07:40:160
68232281,5sleep00-21swapper/008:11:040
19818992810,6cyclictest29704-21taskset07:47:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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