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2026-06-10 - 01:52

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 Tue Jun 09, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
203919911511108,38cyclictest0-21swapper/007:25:190
203132722674,32sleep10-21swapper/107:24:461
200252543498,30sleep00-21swapper/007:21:440
2039299151144,4cyclictest21128-21iostat_ios07:25:181
284522660,5sleep00-21swapper/012:00:190
149962520,2sleep014997-21expr11:25:130
186722480,5sleep02039199cyclictest10:10:010
119692480,5sleep0111rcuc/011:15:280
257092460,7sleep02039199cyclictest10:25:280
167882371,5sleep016838-21latency_hist10:05:010
70242350,8sleep02039199cyclictest09:36:240
314002341,4sleep131460-21mailstats09:15:281
280082341,4sleep028150-21users07:40:300
2039199341,7cyclictest26477-21sshd09:04:160
99592331,28sleep010067-21df08:20:120
245802331,28sleep124581-21sshd08:59:151
20392993319,8cyclictest14135-21iostat_ios08:30:201
20391993222,6cyclictest1165-21watchsnmpd10:49:000
20391993216,13cyclictest3-21ksoftirqd/009:13:260
2039199321,19cyclictest27941-21taskset10:33:390
179072321,4sleep117910-21irqstats08:40:211
20392993124,4cyclictest10492-21missed_timers08:20:221
2039199312,24cyclictest4067-21df09:30:120
2039199311,12cyclictest0-21swapper/008:49:390
20391993110,17cyclictest32286-21taskset07:52:210
109412311,5sleep00-21swapper/009:47:570
109412311,5sleep00-21swapper/009:47:570
108552311,5sleep10-21swapper/109:47:021
108552311,5sleep10-21swapper/109:47:021
108462311,4sleep110893-21df_inode12:40:141
66342301,5sleep00-21swapper/012:29:410
317842301,5sleep00-21swapper/009:15:510
297472301,5sleep10-21swapper/110:37:571
2039199305,4cyclictest81rcu_preempt09:22:330
2039199302,13cyclictest26713-21munin-run07:40:000
2039199301,4cyclictest81rcu_preempt10:16:470
20391993012,5cyclictest23301-21memory10:20:230
20391993011,6cyclictest3286-21runrttasks11:22:450
2039199301,13cyclictest13374-21cron08:30:000
83842291,5sleep00-21swapper/012:33:240
7162291,5sleep10-21swapper/112:13:101
51502291,5sleep00-21swapper/008:05:280
44822291,5sleep00-21swapper/012:21:500
295292291,5sleep10-21swapper/112:04:151
279692291,5sleep10-21swapper/110:34:001
2039299294,9cyclictest27313-21iostat_ios09:05:201
2039299294,18cyclictest31126-21diskstats07:50:151
2039299292,23cyclictest0-21swapper/109:24:251
20392992920,5cyclictest7302-21wget11:05:131
20392992914,8cyclictest26299-21diskstats11:55:181
2039299291,25cyclictest111-21usb-storage07:40:281
20392992912,12cyclictest17480-21hwlatdetect10:05:201
2039199293,4cyclictest81rcu_preempt11:41:550
2039199291,24cyclictest22425-21taskset08:51:200
20391992911,5cyclictest17311-21/usr/sbin/munin08:40:130
200172291,5sleep10-21swapper/111:38:191
144622291,5sleep00-21swapper/009:55:320
119182291,5sleep00-21swapper/012:40:510
100132291,5sleep00-21swapper/012:35:480
91682281,5sleep10-21swapper/108:15:341
91682281,5sleep10-21swapper/108:15:331
88662281,5sleep10-21swapper/109:40:531
70152281,5sleep10-21swapper/111:04:541
38492281,5sleep00-21swapper/008:03:470
316422281,5sleep00-21swapper/012:10:070
28532281,5sleep00-21swapper/010:50:590
274332281,5sleep00-21swapper/011:57:080
258892281,5sleep10-21swapper/110:26:491
246932281,5sleep10-21swapper/107:34:011
246532281,5sleep00-21swapper/007:33:380
244392281,5sleep00-21swapper/008:57:460
220642281,5sleep10-21swapper/111:44:501
2039299287,16cyclictest0-21swapper/110:40:251
2039299284,8cyclictest29058-21diskstats07:45:161
2039299283,18cyclictest25588-21iostat_ios07:35:191
2039199284,8cyclictest30433-21diskstats10:40:170
2039199282,12cyclictest9351-21df11:10:120
20391992811,5cyclictest0-21swapper/010:55:410
2039199281,14cyclictest27972-21uptime09:05:280
20391992810,5cyclictest23495-21unixbench_singl11:45:310
201382281,5sleep00-21swapper/011:39:350
179472281,5sleep10-21swapper/111:31:171
179402281,4sleep00-21swapper/011:31:120
167702281,5sleep10-21swapper/110:04:491
167052281,5sleep10-21swapper/108:35:401
160492281,5sleep10-21swapper/112:54:311
158892281,5sleep00-21swapper/012:52:520
128002281,5sleep00-21swapper/009:52:460
11962281,5sleep10-21swapper/110:49:211
88872271,4sleep00-21swapper/011:09:500
59972271,5sleep10-21swapper/108:10:021
51182271,5sleep10-21swapper/109:31:061
46872271,5sleep10-21swapper/112:24:001
299912271,5sleep10-21swapper/109:11:431
243092271,5sleep10-21swapper/110:24:551
23932271,4sleep00-21swapper/012:15:480
238222271,5sleep10-21swapper/111:48:361
207152271,5sleep10-21swapper/108:48:051
2039299274,17cyclictest24723-21iostat_ios11:50:211
2039299274,16cyclictest1062-21/usr/sbin/munin12:15:311
20392992715,10cyclictest22-21ksoftirqd/111:20:011
20392992714,4cyclictest22-21ksoftirqd/110:15:091
2039199279,5cyclictest18881-21wget10:10:100
2039199275,10cyclictest28842-21aten_r4power_po07:45:120
2039199272,12cyclictest30063-21diskstats12:05:130
2039199271,14cyclictest2225-21dbus-daemon11:53:450
2039199271,13cyclictest1859-21aten_r4power_po09:25:120
2039199271,13cyclictest1060-21ntpdc07:55:250
142172271,5sleep10-21swapper/111:21:301
56902261,4sleep10-21swapper/108:08:251
2039299269,13cyclictest9562-21hddtemp_smartct11:10:161
20392992615,9cyclictest22-21ksoftirqd/110:11:151
20392992614,9cyclictest22-21ksoftirqd/112:25:271
2039299261,22cyclictest1798-21/usr/sbin/munin09:25:151
2039299261,21cyclictest14720-21/usr/sbin/munin11:25:301
2039199261,15cyclictest0-21swapper/012:48:460
2039199261,12cyclictest14181-21grep08:30:220
131332261,4sleep10-21swapper/108:27:311
127572261,5sleep10-21swapper/109:52:191
2039299259,12cyclictest0-21swapper/108:00:211
20392992518,4cyclictest22-21ksoftirqd/112:05:251
20392992517,5cyclictest25590-21needreboot09:00:211
20392992517,5cyclictest22-21ksoftirqd/112:32:181
2039299251,11cyclictest0-21swapper/112:35:201
20392992510,3cyclictest0-21swapper/110:55:161
20392992510,3cyclictest0-21swapper/109:35:281
2039199259,5cyclictest15692-21df08:35:120
2039199258,5cyclictest29066-21ntp_states10:35:260
2039199251,7cyclictest20389-21cyclictest11:00:180
2039199251,15cyclictest0-21swapper/008:19:580
2039199251,15cyclictest0-21swapper/008:19:580
2039299243,16cyclictest13780-21iostat_ios09:55:201
20392992417,4cyclictest22-21ksoftirqd/112:45:251
20392992417,4cyclictest22-21ksoftirqd/110:50:171
20392992417,4cyclictest22-21ksoftirqd/108:50:231
20392992417,4cyclictest22-21ksoftirqd/107:55:151
2039199241,15cyclictest0-21swapper/009:41:300
20391992312,6cyclictest7087-21timerandwakeup08:10:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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