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2026-05-01 - 16:12

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 highest latencies:
System rack9slot4s (updated Fri May 01, 2026 12:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
110059912311221,7cyclictest0-21swapper/007:25:140
110069911081093,12cyclictest0-21swapper/107:25:121
105502677579,83sleep10-21swapper/107:20:491
107212629560,57sleep00-21swapper/007:22:370
110059913575,39cyclictest21305-21ntp_states10:25:240
434521070,7sleep01100599cyclictest10:05:320
203692790,8sleep01100599cyclictest12:15:250
1100599611,13cyclictest6287-21wget12:00:110
318992560,8sleep01100599cyclictest09:24:160
126022510,5sleep019072-21diskmemload10:15:260
271482500,8sleep01100599cyclictest09:18:440
178712450,8sleep01100599cyclictest09:45:130
11005993921,6cyclictest3-21ksoftirqd/012:41:170
11005993910,4cyclictest81rcu_preempt12:37:560
11005993814,5cyclictest32422-21/usr/sbin/munin11:15:230
112012370,33sleep011272-21users10:50:270
11006993710,12cyclictest27739-21timerwakeupswit09:55:271
261202361,12sleep126237-21grep08:00:261
1100699368,24cyclictest0-21swapper/110:12:411
1100699361,9cyclictest7883-21latency_hist08:40:001
1100699361,4cyclictest81rcu_preempt12:05:211
10222360,4sleep1211ktimersoftd/112:30:261
300202351,3sleep030154-21df11:50:120
13642351,4sleep11535-21fschecks_time10:40:161
1100699353,18cyclictest0-21swapper/109:14:471
1100699353,18cyclictest0-21swapper/109:14:461
1100699352,7cyclictest4703-21aten_r4power_po09:30:111
1100599359,9cyclictest0-21swapper/010:42:020
1100599357,5cyclictest81rcu_preempt12:11:050
11005993513,12cyclictest3-21ksoftirqd/010:00:280
1100599351,13cyclictest0-21swapper/007:33:330
1100599351,12cyclictest81rcu_preempt07:45:420
1100599351,12cyclictest172422timerandwakeup10:20:290
1100599351,12cyclictest172422timerandwakeup10:20:280
264902342,4sleep10-21swapper/112:22:511
238282341,4sleep123835-21ssh10:28:551
1100699348,4cyclictest81rcu_preempt11:16:241
1100699346,4cyclictest40250irq/92-i91510:39:211
1100699346,25cyclictest14290-21iostat_ios07:30:201
1100699342,18cyclictest10246-21sed09:35:291
1100599344,12cyclictest0-21swapper/011:27:230
1100599341,7cyclictest29730-21ssh09:58:340
1100599341,13cyclictest0-21swapper/011:20:280
1100599341,12cyclictest5401-21memory09:30:220
165912330,2sleep016589-21mailstats07:35:250
155842331,4sleep115594-21ssh10:19:451
11006993313,5cyclictest188582ssh10:22:541
11006993313,5cyclictest188582ssh10:22:531
1100599335,13cyclictest11565-21gdbus10:58:210
1100599334,8cyclictest6666-21python10:45:270
11005993314,6cyclictest26674-21python11:45:300
11005993314,6cyclictest26674-21python11:45:290
11005993314,5cyclictest0-21swapper/012:54:170
11005993310,6cyclictest25025-21ssh11:06:360
319382321,4sleep032108-21head08:15:300
213962321,26sleep119072-21diskmemload11:02:491
1100699321,5cyclictest81rcu_preempt12:16:581
1100699321,16cyclictest31474-21rm09:23:341
1100599324,13cyclictest11565-21gdbus10:31:380
1100599323,4cyclictest81rcu_preempt11:41:490
1100599323,15cyclictest13683-21df_inode09:40:130
11005993224,5cyclictest0-21swapper/008:36:130
1100599321,20cyclictest25910-21sh12:21:520
1100599321,11cyclictest29908-21ssh11:12:310
1100599321,11cyclictest29908-21ssh11:12:310
1100599321,10cyclictest25679-21ssh09:54:050
20032311,5sleep10-21swapper/108:24:501
1100699319,11cyclictest0-21swapper/112:12:511
1100699315,22cyclictest0-21swapper/112:47:161
1100699313,13cyclictest0-21swapper/108:26:341
11006993121,6cyclictest19146-21ssh12:50:581
11006993120,6cyclictest30450-21sort11:50:181
1100699311,5cyclictest81rcu_preempt11:09:421
11006993115,13cyclictest22-21ksoftirqd/108:45:511
1100699311,3cyclictest81rcu_preempt12:41:031
11006993113,5cyclictest3286-21runrttasks07:59:201
1100699311,17cyclictest22645-21ssh09:50:151
11006993111,6cyclictest0-21swapper/108:40:331
1100599318,11cyclictest4841-21latency08:30:200
1100599311,26cyclictest30605-21ssh10:35:360
1100599311,18cyclictest30694-21sh12:27:350
270752301,25sleep127085-21ssh11:45:451
270752301,25sleep127085-21ssh11:45:441
200562301,4sleep122587-1kworker/1:0H11:38:381
171802301,24sleep117201-21munin-run09:05:011
157622301,3sleep015768-21diskstats09:00:150
143132301,5sleep10-21swapper/111:31:211
1100699306,13cyclictest40250irq/92-i91509:45:251
1100699303,24cyclictest0-21swapper/110:00:161
1100699302,8cyclictest6043-21hddtemp_smartct10:45:161
1100699302,24cyclictest0-21swapper/110:51:331
1100699301,4cyclictest81rcu_preempt12:28:051
1100699301,4cyclictest81rcu_preempt11:24:131
1100599307,10cyclictest13753-21kernelversion12:45:210
1100599304,4cyclictest81rcu_preempt08:28:250
1100599304,22cyclictest10321-21sed09:35:290
1100599302,5cyclictest81rcu_preempt12:30:160
1100599302,4cyclictest81rcu_preempt09:26:160
1100599302,14cyclictest17290-21hddtemp_smartct11:35:150
1100599302,13cyclictest20026-21users11:00:300
1100599301,4cyclictest81rcu_preempt10:10:170
1100599301,12cyclictest0-21swapper/008:52:010
11005993011,15cyclictest11245-21cron08:47:000
183562290,3sleep018355-21mailstats09:05:260
1100699294,3cyclictest81rcu_preempt07:39:101
1100699292,15cyclictest0-21swapper/110:55:501
11006992915,10cyclictest22-21ksoftirqd/111:58:301
1100699291,4cyclictest81rcu_preempt07:50:171
1100699291,17cyclictest32628-21aten_r4power_en09:25:101
1100599296,11cyclictest3286-21runrttasks12:07:210
1100599292,13cyclictest2473-21irqstats11:55:200
11005992913,5cyclictest3-21ksoftirqd/011:31:410
11005992913,13cyclictest27908-21ntpdc08:05:230
11005992912,5cyclictest26063-21ntp_states08:00:250
1100599291,25cyclictest0-21swapper/008:20:120
1100599291,12cyclictest0-21swapper/009:10:070
1100599291,12cyclictest0-21swapper/009:10:060
11005992910,7cyclictest13929-21/usr/sbin/munin08:55:150
71502281,5sleep10-21swapper/112:37:501
279042281,5sleep10-21swapper/110:33:251
190182281,5sleep10-21swapper/109:09:391
130972281,5sleep10-21swapper/108:51:461
1100699286,6cyclictest0-21swapper/110:06:231
1100699285,4cyclictest81rcu_preempt08:59:051
1100699285,20cyclictest0-21swapper/111:11:481
1100699285,20cyclictest0-21swapper/111:11:481
1100699284,5cyclictest81rcu_preempt08:06:411
11006992818,6cyclictest6411-21sh12:00:111
11006992816,9cyclictest3286-21runrttasks11:26:201
11006992810,5cyclictest40250irq/92-i91511:40:161
11005992811,5cyclictest21640-21cpuspeed_turbos07:50:120
1100599281,14cyclictest29432-21/usr/sbin/munin08:10:150
1100599281,13cyclictest8050-21wget08:40:120
1100599281,13cyclictest17528-21aten_r4power_cu07:40:090
54802271,5sleep10-21swapper/108:30:501
308592271,5sleep10-21swapper/108:15:081
244112271,5sleep10-21swapper/109:15:201
211942271,5sleep10-21swapper/107:48:591
189192271,5sleep10-21swapper/107:41:581
1100699277,5cyclictest81rcu_preempt08:10:241
1100699271,21cyclictest15047-21ssh09:40:541
1100599279,5cyclictest23630-21diskstats07:55:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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