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2026-05-12 - 08:55

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 Tue May 12, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
190089911231101,6cyclictest19384-21cstates19:25:130
185442563517,31sleep00-21swapper/019:20:430
172382452407,29sleep10-21swapper/119:20:051
1900999157151,3cyclictest0-21swapper/119:25:131
123762780,4sleep10-21swapper/121:55:251
106092460,7sleep01900899cyclictest00:44:220
19009994523,4cyclictest22-21ksoftirqd/120:30:121
19008994418,5cyclictest3-21ksoftirqd/021:27:210
1900999425,6cyclictest22-21ksoftirqd/100:35:251
1900999416,6cyclictest22-21ksoftirqd/121:15:221
1900999416,4cyclictest81rcu_preempt23:50:211
1900999407,6cyclictest22-21ksoftirqd/122:14:561
1900999407,4cyclictest81rcu_preempt20:00:151
1900999406,4cyclictest81rcu_preempt23:55:161
1900999406,4cyclictest81rcu_preempt23:35:131
1900999406,4cyclictest81rcu_preempt19:55:161
1900999406,4cyclictest81rcu_preempt00:30:131
1900999406,4cyclictest81rcu_preempt00:15:121
1900999403,6cyclictest22-21ksoftirqd/120:10:121
19009994013,6cyclictest22-21ksoftirqd/122:30:281
1900999396,4cyclictest81rcu_preempt23:40:281
1900999396,4cyclictest81rcu_preempt23:20:101
1900999396,4cyclictest81rcu_preempt21:50:201
1900999396,4cyclictest81rcu_preempt00:40:161
1900999396,25cyclictest40250irq/92-i91523:07:111
1900999395,4cyclictest81rcu_preempt23:45:171
1900999395,4cyclictest81rcu_preempt23:15:101
1900999395,4cyclictest81rcu_preempt22:40:111
1900999395,4cyclictest81rcu_preempt22:25:151
1900999395,4cyclictest81rcu_preempt22:15:211
1900999395,4cyclictest81rcu_preempt19:46:241
1900999394,5cyclictest22-21ksoftirqd/120:50:161
1900999393,6cyclictest22-21ksoftirqd/121:10:231
1900999393,6cyclictest22-21ksoftirqd/120:55:221
19009993924,4cyclictest22-21ksoftirqd/120:20:101
1900999391,7cyclictest22-21ksoftirqd/123:25:131
1900999385,4cyclictest81rcu_preempt00:10:111
1900999383,6cyclictest22-21ksoftirqd/121:20:231
1900999381,6cyclictest22-21ksoftirqd/100:05:231
19009993816,6cyclictest22-21ksoftirqd/121:45:291
1900999374,4cyclictest81rcu_preempt22:50:251
1900999374,4cyclictest81rcu_preempt21:05:191
1900999373,4cyclictest81rcu_preempt00:25:121
1900999371,7cyclictest22-21ksoftirqd/122:00:131
1900999371,7cyclictest22-21ksoftirqd/121:40:131
19009993717,4cyclictest22-21ksoftirqd/122:20:161
1900999363,5cyclictest81rcu_preempt20:40:231
1900999363,4cyclictest81rcu_preempt22:55:101
1900999362,4cyclictest81rcu_preempt21:35:111
19009993617,4cyclictest22-21ksoftirqd/121:00:081
1900999361,6cyclictest22-21ksoftirqd/122:05:121
19009993616,4cyclictest22-21ksoftirqd/100:50:271
19009993615,7cyclictest22-21ksoftirqd/119:40:141
19008993626,6cyclictest5794-21/usr/sbin/munin00:30:210
1900999357,4cyclictest81rcu_preempt19:30:181
1900999355,4cyclictest81rcu_preempt21:25:121
1900999354,6cyclictest22-21ksoftirqd/122:35:251
1900999353,4cyclictest81rcu_preempt23:10:121
1900999353,4cyclictest81rcu_preempt23:10:111
1900999353,4cyclictest81rcu_preempt22:45:201
1900999351,7cyclictest22-21ksoftirqd/120:35:131
1900999351,6cyclictest22-21ksoftirqd/120:46:551
19009993515,10cyclictest22-21ksoftirqd/100:00:101
1900999351,4cyclictest81rcu_preempt23:00:131
19008993520,5cyclictest3-21ksoftirqd/019:30:180
19008993510,5cyclictest253832/usr/sbin/munin21:05:160
1900999344,4cyclictest81rcu_preempt23:30:111
19009993420,4cyclictest22-21ksoftirqd/100:45:251
1900999341,6cyclictest22-21ksoftirqd/120:25:191
1900899342,19cyclictest0-21swapper/023:02:540
19008993411,4cyclictest81rcu_preempt21:47:590
19008993411,10cyclictest32660-21kworker/0:219:58:510
19009993318,4cyclictest22-21ksoftirqd/100:20:181
1900999331,6cyclictest22-21ksoftirqd/120:17:001
1900999331,6cyclictest22-21ksoftirqd/119:35:271
1900899334,5cyclictest81rcu_preempt22:30:160
1900899332,15cyclictest27612-21python22:35:290
1900899332,14cyclictest31536-21ntpdc21:20:240
1900899331,20cyclictest15550-21expr22:05:120
157612331,5sleep015934-21ls20:40:120
1900899328,12cyclictest81rcu_preempt20:35:000
1900899327,12cyclictest16152-21grep23:30:310
114932321,4sleep011521-21fschecks_count23:20:140
19009993117,4cyclictest22-21ksoftirqd/120:05:181
19009993112,4cyclictest22-21ksoftirqd/121:30:121
19009993112,4cyclictest22-21ksoftirqd/121:30:121
1900899314,14cyclictest0-21swapper/021:10:220
1900899312,15cyclictest14094-21python23:25:280
19008993112,6cyclictest23291-21ntpdc23:50:230
1900899311,16cyclictest1411-21basename00:20:120
31852301,5sleep00-21swapper/022:57:000
1900999301,10cyclictest22-21ksoftirqd/119:50:161
1900899304,9cyclictest20023-21iostat_ios20:50:220
1900899304,23cyclictest0-21swapper/020:35:180
1900899301,4cyclictest81rcu_preempt22:26:410
19008993013,4cyclictest13722-21mailstats00:50:250
1900899301,11cyclictest0-21swapper/000:25:300
19008993010,6cyclictest21868-21if_eth020:55:180
19008993010,5cyclictest28882-21wget21:15:120
248012291,6sleep00-21swapper/021:03:560
1900899299,16cyclictest313992chrt00:11:420
1900899292,4cyclictest81rcu_preempt20:15:100
1900899292,13cyclictest20462-21munin-run23:45:010
1900899291,4cyclictest81rcu_preempt23:16:500
19008992912,4cyclictest465-21switchtime00:15:280
1900899291,23cyclictest602-21wget20:00:110
1900899291,20cyclictest0-21swapper/000:06:090
1900899291,14cyclictest12723-21sort00:50:010
187672291,5sleep00-21swapper/022:13:380
88962281,5sleep00-21swapper/023:12:320
88962281,5sleep00-21swapper/023:12:310
69932281,5sleep00-21swapper/023:07:120
206462281,5sleep00-21swapper/022:18:350
190962281,5sleep00-21swapper/020:48:190
1900899288,10cyclictest3-21ksoftirqd/022:00:530
1900899282,13cyclictest21982-21python22:20:260
1900899281,8cyclictest0-21swapper/022:48:290
1900899281,18cyclictest0-21swapper/000:39:290
1900899281,17cyclictest0-21swapper/020:05:300
1900899281,14cyclictest10131-21/usr/sbin/munin20:25:120
1900899281,14cyclictest0-21swapper/023:49:080
19008992810,6cyclictest27601-21df_inode19:45:140
19008992810,6cyclictest12174-21cut21:55:200
19008992810,4cyclictest2428-21fschecks_count21:30:150
19008992810,4cyclictest2428-21fschecks_count21:30:150
11262281,5sleep00-21swapper/022:51:100
111622281,5sleep00-21swapper/021:52:500
58372271,5sleep00-21swapper/020:12:300
1900899271,9cyclictest4370-21fschecks_count21:35:160
1900899271,18cyclictest0-21swapper/019:35:340
1900899271,14cyclictest11564-21packagekitd22:40:290
1900899271,13cyclictest6799-21wc21:40:280
19008992710,14cyclictest0-21swapper/000:03:070
1900899262,11cyclictest0-21swapper/023:56:170
1900899261,23cyclictest0-21swapper/019:41:380
1900899261,14cyclictest0-21swapper/019:50:270
1900899258,5cyclictest81rcu_preempt23:40:000
1900899251,13cyclictest8824-21/usr/sbin/munin20:20:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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