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2026-05-18 - 14:43

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 376 highest latencies:
System rack9slot4s (updated Mon May 18, 2026 12:58:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63189911511136,12cyclictest0-21swapper/007:25:200
63199911441135,6cyclictest0-21swapper/107:25:161
61922565518,32sleep00-21swapper/007:24:150
58392513417,31sleep10-21swapper/107:20:311
863921170,5sleep18636-21aten_r4power_vo10:20:131
2563721160,10sleep0631899cyclictest11:05:120
183062890,5sleep018307-21aten_r4power_cu09:20:090
98522500,22sleep00-21swapper/007:30:240
6319994218,4cyclictest22-21ksoftirqd/107:41:091
229992391,5sleep123000-21cron10:56:001
125772397,27sleep00-21swapper/010:30:150
6319993819,4cyclictest22-21ksoftirqd/111:40:011
6319993712,6cyclictest22-21ksoftirqd/108:10:001
238592362,5sleep123868-21diskstats11:00:151
6319993525,6cyclictest10501-21perl11:50:161
6319993411,4cyclictest22-21ksoftirqd/112:21:581
631899341,11cyclictest0-21swapper/008:11:260
59552341,5sleep16010-21users10:10:301
6319993311,4cyclictest22-21ksoftirqd/112:29:501
6319993310,4cyclictest22-21ksoftirqd/111:08:181
631899331,20cyclictest8627-21runrttasks08:54:150
6319993217,8cyclictest16994-21iostat_ios09:15:201
6319993210,4cyclictest22-21ksoftirqd/111:29:161
6319993210,4cyclictest22-21ksoftirqd/108:17:311
631899322,25cyclictest24930-21python09:35:280
6319993124,5cyclictest22-21ksoftirqd/108:55:151
6319993116,12cyclictest22-21ksoftirqd/110:15:281
6319993110,4cyclictest22-21ksoftirqd/112:17:171
6319993110,4cyclictest22-21ksoftirqd/110:48:451
6319993110,3cyclictest22-21ksoftirqd/108:28:381
631899319,18cyclictest32099-21diskstats08:30:150
6318993121,7cyclictest0-21swapper/011:25:140
631899311,5cyclictest0-21swapper/012:40:290
6318993111,5cyclictest0-21swapper/012:36:060
219312311,5sleep10-21swapper/108:01:491
631999309,4cyclictest22-21ksoftirqd/112:13:321
631999309,4cyclictest22-21ksoftirqd/112:01:421
631999309,4cyclictest22-21ksoftirqd/111:24:581
631999309,4cyclictest22-21ksoftirqd/110:38:221
631999309,4cyclictest22-21ksoftirqd/110:27:261
631999308,4cyclictest22-21ksoftirqd/110:41:141
631999307,4cyclictest22-21ksoftirqd/108:51:351
6319993023,4cyclictest22-21ksoftirqd/109:48:471
6319993020,7cyclictest22-21ksoftirqd/107:32:191
6319993019,8cyclictest22-21ksoftirqd/109:20:411
6319993019,8cyclictest22-21ksoftirqd/109:10:431
631899306,5cyclictest81rcu_preempt09:05:180
631899305,4cyclictest81rcu_preempt08:15:230
631899302,4cyclictest81rcu_preempt12:50:110
631899302,4cyclictest81rcu_preempt11:55:160
631899302,14cyclictest10868-21ntp_states11:50:250
631899302,13cyclictest16132-21cut12:05:170
320302301,5sleep00-21swapper/011:20:260
288042301,5sleep10-21swapper/111:12:381
28722301,5sleep10-21swapper/108:38:191
250752301,5sleep10-21swapper/112:30:041
121432301,5sleep00-21swapper/009:01:360
119132301,24sleep111966-21grep11:55:121
64152291,5sleep00-21swapper/008:45:460
6319992923,4cyclictest22-21ksoftirqd/109:26:241
6319992922,4cyclictest22-21ksoftirqd/112:50:261
6319992922,4cyclictest22-21ksoftirqd/109:43:591
6319992922,4cyclictest22-21ksoftirqd/109:30:191
6319992922,4cyclictest22-21ksoftirqd/107:35:031
6319992915,8cyclictest29797-21iostat_ios11:15:211
631899296,4cyclictest81rcu_preempt09:40:120
631899294,19cyclictest15209-21memory09:10:230
631899293,4cyclictest81rcu_preempt07:39:080
631899292,14cyclictest30756-21ntp_states08:25:240
631899291,4cyclictest81rcu_preempt10:43:570
6318992913,4cyclictest81rcu_preempt11:00:260
631899291,15cyclictest6110-21munin-plugin-st11:40:000
631899291,14cyclictest15347-21tune2fs07:45:160
631899290,4cyclictest81rcu_preempt12:03:420
307132291,5sleep00-21swapper/011:17:560
291632291,5sleep00-21swapper/009:47:340
263802291,6sleep00-21swapper/012:30:420
252352291,5sleep10-21swapper/109:35:581
202602291,5sleep10-21swapper/107:59:091
191282291,24sleep019179-21if_err_eth007:55:170
136672291,5sleep10-21swapper/110:31:391
98162281,5sleep00-21swapper/011:49:280
95942281,5sleep10-21swapper/111:47:071
80972281,5sleep00-21swapper/010:17:290
631999288,3cyclictest22-21ksoftirqd/109:01:261
631999287,4cyclictest22-21ksoftirqd/107:54:031
631999287,3cyclictest22-21ksoftirqd/107:47:141
631999286,18cyclictest0-21swapper/109:07:571
631999284,9cyclictest24577-21diskstats08:10:161
6319992822,4cyclictest22-21ksoftirqd/112:06:021
6319992822,4cyclictest22-21ksoftirqd/109:55:221
6319992822,4cyclictest22-21ksoftirqd/108:32:511
6319992821,5cyclictest0-21swapper/111:33:301
6319992821,4cyclictest22-21ksoftirqd/111:43:181
631899289,5cyclictest32214-21netstat09:55:220
631899283,4cyclictest81rcu_preempt10:23:120
631899283,21cyclictest0-21swapper/009:50:210
631899283,12cyclictest0-21swapper/012:30:010
631899282,13cyclictest2225-21dbus-daemon09:30:060
631899281,4cyclictest81rcu_preempt12:49:270
631899281,4cyclictest81rcu_preempt10:58:380
631899281,4cyclictest81rcu_preempt09:27:000
631899281,19cyclictest0-21swapper/010:36:240
631899280,4cyclictest81rcu_preempt11:40:060
50972281,5sleep10-21swapper/108:45:031
43582281,5sleep10-21swapper/110:07:431
43512281,5sleep00-21swapper/010:07:380
295362281,5sleep10-21swapper/108:22:431
286402281,5sleep00-21swapper/011:10:560
237522281,5sleep00-21swapper/008:06:150
21882281,5sleep00-21swapper/010:00:410
214742281,5sleep10-21swapper/110:54:401
190012281,5sleep00-21swapper/012:12:100
180402281,5sleep00-21swapper/010:45:130
177422281,5sleep00-21swapper/009:16:140
6319992720,4cyclictest22-21ksoftirqd/112:35:281
6319992720,4cyclictest22-21ksoftirqd/110:00:111
6319992720,4cyclictest22-21ksoftirqd/108:40:141
631899273,7cyclictest0-21swapper/010:25:180
6318992720,4cyclictest17555-21ntpdc07:50:240
6318992710,15cyclictest0-21swapper/012:22:410
631899270,4cyclictest81rcu_preempt08:22:160
47202271,5sleep00-21swapper/008:42:420
631999268,5cyclictest3286-21runrttasks12:40:121
6319992619,4cyclictest22-21ksoftirqd/109:50:461
6318992615,6cyclictest13840-21ntp_states07:40:260
631899261,17cyclictest0-21swapper/010:12:010
631899261,12cyclictest21119-21iostat08:00:190
6318992610,12cyclictest20121-21fschecks_count10:50:150
631999258,4cyclictest22-21ksoftirqd/112:45:261
6318992514,7cyclictest1819-21iostat08:35:210
631899246,4cyclictest81rcu_preempt11:30:230
631899242,17cyclictest19734-21diskstats12:15:140
631899232,16cyclictest9332-21perl08:55:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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