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2026-06-11 - 23:38

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 Thu Jun 11, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
186989911881179,6cyclictest0-21swapper/007:25:170
186999911851152,29cyclictest19130-21diskstats07:25:141
172862644597,31sleep00-21swapper/007:20:150
183112426381,30sleep10-21swapper/107:21:311
804521070,3sleep1211ktimersoftd/109:45:151
804521070,3sleep1211ktimersoftd/109:45:151
16082860,3sleep0111rcuc/010:55:110
265082820,4sleep0111rcuc/012:00:160
265082820,4sleep0111rcuc/012:00:150
1869899381,15cyclictest3286-21runrttasks08:50:200
18698993725,8cyclictest26875-21grep10:35:160
253522364,2sleep10-21swapper/110:30:211
1869899361,8cyclictest13870-21unixbench_multi12:50:280
18698993510,6cyclictest11886-21/usr/sbin/munin12:45:270
18699993418,12cyclictest30115-21/usr/sbin/munin07:50:311
1869899349,7cyclictest1107-21python09:25:270
1869899345,15cyclictest0-21swapper/011:09:350
1869899341,4cyclictest22258-21/usr/sbin/munin07:30:250
1869899341,15cyclictest21248-21/usr/sbin/munin08:55:220
1869899341,14cyclictest7942-21/usr/sbin/munin11:10:170
1869899333,17cyclictest0-21swapper/009:24:110
1869899332,5cyclictest11564-21packagekitd11:25:420
1869899332,13cyclictest22910-21perl11:50:150
1869899331,6cyclictest27740-21awk09:10:240
1869899331,5cyclictest25756-21/usr/sbin/munin09:05:230
1869899331,5cyclictest16876-21wget11:35:120
1869899331,5cyclictest12260-21fschecks_time08:30:160
107672330,7sleep10-21swapper/112:45:001
83652320,7sleep11869999cyclictest08:20:131
1869899328,5cyclictest20014-21cut10:15:270
1869899327,5cyclictest4228-21latency_hist08:10:010
18698993222,6cyclictest6782-21taskset12:34:200
1869899321,14cyclictest30292-21taskset10:45:000
1869899321,14cyclictest25378-21threads11:55:260
1869899321,14cyclictest24496-21chrt09:01:160
1869899321,12cyclictest22492-21taskset10:23:420
230942311,3sleep023256-21fschecks_time10:25:160
1869899319,10cyclictest0-21swapper/009:52:520
1869899318,6cyclictest15572-21uniq10:05:140
1869899317,7cyclictest16770-21sed08:40:290
1869899314,24cyclictest0-21swapper/009:31:010
1869899313,24cyclictest0-21swapper/009:17:450
1869899311,5cyclictest30511-21runrttasks07:53:310
1869899311,5cyclictest17592-21fschecks_time10:10:160
1869899311,14cyclictest2225-21dbus-daemon07:40:150
1869899311,13cyclictest9170-21taskset09:47:090
1869899311,13cyclictest9170-21taskset09:47:080
1869899311,13cyclictest5182-21head09:35:300
1869899311,13cyclictest23669-21fschecks_count07:35:150
1869899311,13cyclictest12477-21taskset11:21:020
1869899311,11cyclictest16368-21taskset11:32:300
131812311,5sleep10-21swapper/109:59:531
109172311,26sleep111086-21df12:45:111
1869899307,4cyclictest4701-21taskset12:27:100
1869899303,12cyclictest0-21swapper/008:37:360
18698993021,5cyclictest9907-21cat11:15:200
18698993018,7cyclictest32638-21ntp_kernel_pll_12:15:220
1869899301,4cyclictest5957-21taskset08:14:190
18698993014,4cyclictest7021-21ntpq08:15:230
1869899301,14cyclictest9790-21ps12:40:260
1869899301,14cyclictest0-21swapper/009:55:560
1869899301,10cyclictest0-21swapper/012:20:330
87582291,5sleep10-21swapper/111:11:421
75412291,5sleep10-21swapper/109:44:451
323532291,5sleep10-21swapper/109:24:401
20202291,5sleep00-21swapper/008:03:310
18699992919,6cyclictest21658-21grep10:20:221
18699992915,8cyclictest12675-21ntp_states08:30:251
18699992913,13cyclictest22-21ksoftirqd/112:39:211
18699992913,12cyclictest0-21swapper/112:30:241
1869999291,23cyclictest14929-21chrt08:35:291
18699992910,15cyclictest25807-21kernelversion07:40:201
18698992922,4cyclictest31661-21cron12:15:000
18698992920,5cyclictest19622-21find11:40:250
1869899291,25cyclictest0-21swapper/009:40:420
1869899291,15cyclictest0-21swapper/010:52:550
17822291,5sleep10-21swapper/109:29:451
95912281,5sleep00-21swapper/008:22:500
302602281,5sleep10-21swapper/109:17:371
293692281,5sleep10-21swapper/112:05:401
260182281,5sleep00-21swapper/010:31:190
203652281,5sleep10-21swapper/110:16:201
190672281,5sleep00-21swapper/008:48:350
187612281,5sleep10-21swapper/110:14:091
1869999283,22cyclictest0-21swapper/112:15:191
1869999281,22cyclictest6095-21irqstats11:05:211
1869999281,14cyclictest9967-21/usr/sbin/munin08:25:151
18698992818,6cyclictest5326-21cron11:05:000
18698992818,6cyclictest29660-21unixbench_singl10:40:310
18698992817,6cyclictest28184-21grep12:05:120
1869899281,14cyclictest0-21swapper/007:55:400
38082271,5sleep10-21swapper/108:06:261
314432271,5sleep10-21swapper/112:12:451
240622271,5sleep10-21swapper/110:25:321
227172271,5sleep10-21swapper/107:31:071
18699992717,6cyclictest27339-21grep09:10:161
18699992717,6cyclictest20578-21grep08:50:291
1869899276,17cyclictest10386-21fschecks_time08:25:140
1869899274,17cyclictest21145-21iostat_ios11:45:180
147142271,5sleep00-21swapper/010:01:040
191762261,5sleep10-21swapper/108:49:441
1869999265,17cyclictest0-21swapper/110:00:121
1869999263,7cyclictest21544-21diskstats08:55:141
1869999262,20cyclictest0-21swapper/110:55:281
18699992615,6cyclictest23142-21runrttasks09:00:081
1869999261,21cyclictest1975-21/usr/sbin/munin09:30:231
1869999261,21cyclictest16770-21/usr/sbin/munin11:35:231
18699992611,11cyclictest0-21swapper/109:50:191
18699992610,12cyclictest0-21swapper/108:15:241
1869899261,4cyclictest86422chrt12:39:100
141152261,5sleep10-21swapper/112:52:031
1869999259,12cyclictest0-21swapper/111:15:171
1869999258,14cyclictest16254-21seq11:31:201
1869999256,16cyclictest0-21swapper/110:50:111
1869999253,17cyclictest0-21swapper/110:05:171
18699992516,6cyclictest22-21ksoftirqd/110:37:421
18699992516,5cyclictest4978-21cat08:10:201
18699992516,5cyclictest29187-21needreboot10:40:251
18699992515,6cyclictest26320-21seq09:05:441
18699992515,5cyclictest23509-21cpuspeed_turbos07:35:121
18699992514,6cyclictest31212-21cut07:55:151
1869999251,20cyclictest0-21swapper/111:50:171
1869999251,20cyclictest0-21swapper/110:45:261
1869999251,13cyclictest442-21/usr/sbin/munin08:00:111
18699992510,12cyclictest14747-21pidof11:30:001
18699992510,11cyclictest3286-21runrttasks12:29:291
18699992510,11cyclictest3286-21runrttasks11:48:551
1869899253,19cyclictest0-21swapper/007:48:340
18699992416,5cyclictest22-21ksoftirqd/111:00:441
18699992415,6cyclictest22-21ksoftirqd/112:03:161
18699992415,6cyclictest22-21ksoftirqd/112:03:161
18699992414,6cyclictest15936-21fschecks_count08:40:151
18699992413,7cyclictest2225-21dbus-daemon11:20:191
18699992413,7cyclictest0-21swapper/112:20:101
1869999241,19cyclictest0-21swapper/109:35:311
1869999234,15cyclictest25319-21python11:55:261
1869999232,17cyclictest0-21swapper/111:43:351
18699992315,5cyclictest22-21ksoftirqd/107:45:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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