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2026-05-31 - 19:25

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 all highest latencies:
System rack9slot4s (updated Sun May 31, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
324589911241089,31cyclictest1868-21munin-run07:30:001
324589911131062,46cyclictest32507-21cat07:25:011
320222497452,30sleep00-21swapper/007:21:000
3245799178155,16cyclictest1901-21munin-node07:30:010
282902820,5sleep181rcu_preempt10:00:281
3245799483,16cyclictest0-21swapper/008:53:210
3245799453,11cyclictest0-21swapper/010:30:190
3245799443,10cyclictest0-21swapper/012:50:260
3245799433,10cyclictest0-21swapper/010:10:170
3245799433,10cyclictest0-21swapper/007:51:080
3245799433,10cyclictest0-21swapper/007:30:040
3245799423,9cyclictest0-21swapper/011:35:200
3245799423,7cyclictest13470-21/usr/sbin/munin07:55:290
3245799423,10cyclictest0-21swapper/009:35:250
3245799423,10cyclictest0-21swapper/008:49:460
3245799423,10cyclictest0-21swapper/007:35:180
3245799412,10cyclictest0-21swapper/009:23:310
3245799402,9cyclictest0-21swapper/009:03:180
3245799402,9cyclictest0-21swapper/008:06:270
3245799392,19cyclictest0-21swapper/012:05:270
3245799392,10cyclictest0-21swapper/008:11:530
3245799391,8cyclictest0-21swapper/008:42:590
3245799387,3cyclictest81rcu_preempt12:15:300
32457993810,4cyclictest81rcu_preempt12:12:170
3245799372,9cyclictest0-21swapper/011:20:230
3245799371,8cyclictest0-21swapper/011:26:190
32457993710,4cyclictest81rcu_preempt12:01:210
208232370,8sleep13245899cyclictest09:40:281
3245799369,4cyclictest81rcu_preempt12:32:110
3245799362,13cyclictest0-21swapper/009:13:570
3245799361,8cyclictest0-21swapper/010:29:550
3245799361,10cyclictest0-21swapper/009:06:090
3245799353,11cyclictest0-21swapper/009:54:170
3245799352,9cyclictest0-21swapper/012:35:050
3245799347,4cyclictest81rcu_preempt10:40:480
3245799347,4cyclictest81rcu_preempt08:27:530
3245799344,4cyclictest81rcu_preempt12:27:050
3245799344,4cyclictest81rcu_preempt11:49:010
3245799342,29cyclictest0-21swapper/011:55:250
3245799342,11cyclictest0-21swapper/009:58:360
3245799341,9cyclictest0-21swapper/012:45:250
257322341,28sleep125751-21ntp_states11:20:221
97972331,5sleep19804-21df_inode12:05:161
32458993323,6cyclictest27291-21/usr/sbin/munin11:25:171
3245799336,11cyclictest3-21ksoftirqd/011:04:400
3245799334,11cyclictest81rcu_preempt12:24:110
3245799332,8cyclictest0-21swapper/010:23:070
3245799332,15cyclictest0-21swapper/008:24:190
3245799332,13cyclictest0-21swapper/010:49:180
3245799332,10cyclictest0-21swapper/008:55:550
32457993314,7cyclictest3-21ksoftirqd/010:03:470
3245799331,15cyclictest0-21swapper/012:40:230
238102332,27sleep123959-21tr08:25:131
117592331,4sleep111784-21wget10:45:111
3245799323,4cyclictest81rcu_preempt11:41:310
3245799323,10cyclictest81rcu_preempt07:48:280
3245799322,8cyclictest0-21swapper/008:30:240
3245799321,9cyclictest0-21swapper/011:15:210
3245799321,8cyclictest0-21swapper/010:05:130
3245799321,8cyclictest0-21swapper/008:35:190
168482321,9sleep10-21swapper/110:56:061
105322321,4sleep110705-21perl09:15:151
105322321,4sleep110705-21perl09:15:151
46942311,4sleep14698-21ntp_states11:50:231
3245799315,11cyclictest3-21ksoftirqd/008:15:220
3245799314,3cyclictest81rcu_preempt09:42:060
3245799311,8cyclictest0-21swapper/011:05:240
3245799311,19cyclictest0-21swapper/009:45:190
183502310,2sleep118349-21sendmail_mailqu11:00:271
65782301,25sleep16605-21hddtemp_smartct10:30:171
60992301,5sleep10-21swapper/109:02:571
3245899304,19cyclictest9716-21munin-run10:40:001
3245899304,19cyclictest21814-21diskstats09:45:151
3245899302,24cyclictest3632-21ntp_states07:30:251
32458993020,6cyclictest529-21cron08:49:591
3245799306,6cyclictest3-21ksoftirqd/007:40:250
3245799305,7cyclictest3-21ksoftirqd/010:55:240
3245799305,7cyclictest3-21ksoftirqd/010:15:250
3245799302,4cyclictest81rcu_preempt10:36:350
3245799301,8cyclictest0-21swapper/009:15:230
3245799301,8cyclictest0-21swapper/009:15:230
3245799301,8cyclictest0-21swapper/008:00:220
3245799301,3cyclictest81rcu_preempt11:10:110
262822301,5sleep10-21swapper/112:49:471
223032301,5sleep10-21swapper/112:37:571
195832301,5sleep10-21swapper/108:12:361
127772301,5sleep10-21swapper/112:11:381
3245899293,19cyclictest23716-21memory11:15:221
3245899293,19cyclictest19880-21iostat_ios11:05:201
3245899292,13cyclictest22973-21df12:40:141
3245799296,6cyclictest3-21ksoftirqd/011:30:240
3245799295,7cyclictest3-21ksoftirqd/011:50:220
3245799295,7cyclictest3-21ksoftirqd/009:25:220
3245799294,7cyclictest3-21ksoftirqd/009:30:140
234402291,5sleep10-21swapper/108:23:301
166512291,5sleep10-21swapper/112:22:401
134732291,5sleep00-21swapper/010:50:000
13152291,5sleep10-21swapper/111:40:571
122772291,5sleep10-21swapper/107:54:531
79232281,5sleep10-21swapper/109:07:241
47252281,5sleep10-21swapper/107:35:121
3245899284,8cyclictest21451-21diskstats11:10:141
3245899283,9cyclictest7933-21diskstats12:00:131
32458992818,6cyclictest21152-21unixbench_multi08:15:301
3245899281,22cyclictest13354-21grep09:20:301
322592281,5sleep10-21swapper/111:39:581
205702281,5sleep10-21swapper/112:34:251
17432281,5sleep10-21swapper/110:16:461
172512281,5sleep10-21swapper/109:31:341
98552271,5sleep10-21swapper/109:12:561
83102271,5sleep10-21swapper/107:44:531
34102271,5sleep10-21swapper/111:46:581
325882271,5sleep10-21swapper/110:14:351
3245899274,16cyclictest12753-21diskstats07:55:151
3245899272,7cyclictest3286-21runrttasks08:42:061
3245899271,22cyclictest2695-21snmpd10:22:191
3245899271,22cyclictest16232-21/usr/sbin/munin08:05:231
3245899271,13cyclictest26471-21/usr/sbin/munin12:50:321
267412271,5sleep10-21swapper/109:57:341
21842271,5sleep10-21swapper/108:52:321
183842271,5sleep10-21swapper/112:26:081
158572271,5sleep10-21swapper/108:02:531
152812271,5sleep10-21swapper/109:25:351
146402271,5sleep10-21swapper/112:16:291
3245899268,14cyclictest0-21swapper/108:35:251
32458992612,10cyclictest0-21swapper/107:45:211
3245899261,12cyclictest2612-21/usr/sbin/munin08:55:271
32458992610,12cyclictest0-21swapper/110:40:231
190822261,4sleep10-21swapper/109:36:041
153382261,5sleep10-21swapper/110:54:591
32458992518,4cyclictest25982-21fschecks_count08:30:181
32458992515,6cyclictest29503-21fschecks_time10:05:181
3245899251,21cyclictest0-21swapper/111:30:031
32458992510,11cyclictest4674-21fschecks_time10:25:161
3245899242,18cyclictest0-21swapper/111:55:151
3245899238,3cyclictest0-21swapper/109:50:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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