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2026-06-26 - 10:54

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 Fri Jun 26, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111429912731,6cyclictest13003-21latency_hist19:30:011
108192570526,29sleep10-21swapper/119:22:091
107672532486,30sleep00-21swapper/019:21:380
93262820,5sleep01114199cyclictest22:10:100
11142998074,3cyclictest0-21swapper/119:40:161
11141997051,16cyclictest0-21swapper/019:25:150
1114199641,49cyclictest18065-21perl19:40:150
40282560,5sleep0111rcuc/000:45:280
182412460,4sleep1201rcuc/100:00:001
31362431,4sleep03218-21sort23:20:010
7542400,5sleep0111rcuc/020:20:170
239842400,10sleep041ktimersoftd/000:15:010
11142993910,25cyclictest0-21swapper/123:45:191
325522380,4sleep01114199cyclictest00:35:280
11141993822,5cyclictest3-21ksoftirqd/000:05:040
1114299378,5cyclictest81rcu_preempt20:05:141
11141993720,6cyclictest3-21ksoftirqd/022:24:540
137292360,3sleep0111rcuc/020:55:130
11142993617,15cyclictest20450-21cron22:40:001
11141993620,5cyclictest3-21ksoftirqd/019:55:050
45612351,28sleep14625-21iostat20:30:191
260722351,30sleep011565-21gdbus22:54:510
208972351,4sleep02401-21NetworkManager19:47:130
1114199352,18cyclictest23184-21cut21:20:160
1114199351,4cyclictest81rcu_preempt20:10:000
1114199351,22cyclictest27379-21taskset00:22:290
1114199351,11cyclictest0-21swapper/000:03:410
299462341,29sleep129955-21df_inode00:30:151
140882341,29sleep114096-21df_inode19:30:131
11141993418,5cyclictest3-21ksoftirqd/021:30:150
1114199341,21cyclictest1258-21df00:40:140
1114199341,21cyclictest1258-21df00:40:140
11141993410,6cyclictest3-21ksoftirqd/020:00:180
1114299335,4cyclictest81rcu_preempt22:40:211
1114199337,14cyclictest3835-21awk21:55:120
1114199332,4cyclictest2225-21dbus-daemon19:36:190
11141993319,4cyclictest3-21ksoftirqd/020:16:380
11141993318,5cyclictest3-21ksoftirqd/021:18:320
11141993318,5cyclictest3-21ksoftirqd/021:02:270
11141993318,5cyclictest3-21ksoftirqd/020:52:060
11141993318,4cyclictest3-21ksoftirqd/021:13:210
250452321,28sleep025192-21grep00:15:300
11141993224,5cyclictest10050irq/91-xhci_hcd23:35:010
11141993217,5cyclictest3-21ksoftirqd/022:39:320
11141993217,5cyclictest3-21ksoftirqd/022:30:470
11141993216,6cyclictest3-21ksoftirqd/022:59:430
254342311,3sleep00-21swapper/021:25:230
218872311,26sleep121922-21iostat19:50:201
114572311,26sleep111461-21irqstats23:40:201
1114299316,11cyclictest2225-21dbus-daemon00:27:301
1114299315,4cyclictest81rcu_preempt00:02:071
1114299314,4cyclictest81rcu_preempt20:13:491
11141993116,5cyclictest3-21ksoftirqd/020:12:050
11141993115,5cyclictest3-21ksoftirqd/022:26:130
11141993115,5cyclictest3-21ksoftirqd/022:26:130
11141993115,5cyclictest3-21ksoftirqd/020:47:220
8242300,4sleep1211ktimersoftd/121:45:281
293032301,5sleep00-21swapper/000:28:010
245582301,5sleep10-21swapper/121:24:501
224272301,5sleep10-21swapper/121:17:181
166712301,5sleep10-21swapper/122:29:471
166712301,5sleep10-21swapper/122:29:461
121672301,4sleep012227-21/usr/sbin/munin22:15:280
1114299306,4cyclictest81rcu_preempt20:18:051
1114299304,18cyclictest32504-21iostat_ios23:10:211
11142993018,7cyclictest4088-21needreboot23:20:221
11142993015,8cyclictest22738-21iostat_ios00:10:201
1114299301,4cyclictest81rcu_preempt20:48:461
1114299301,19cyclictest0-21swapper/121:35:081
1114299301,15cyclictest3393-21fschecks_time00:45:151
11141993016,4cyclictest3-21ksoftirqd/023:10:490
11141993016,4cyclictest3-21ksoftirqd/021:40:330
11141993015,5cyclictest3-21ksoftirqd/023:38:550
11141993015,4cyclictest3-21ksoftirqd/020:41:460
11141993014,5cyclictest3-21ksoftirqd/023:26:190
11141993014,5cyclictest3-21ksoftirqd/022:47:350
36432291,5sleep00-21swapper/020:27:390
315272291,5sleep10-21swapper/123:07:491
300152291,5sleep00-21swapper/023:05:050
168542291,5sleep10-21swapper/122:30:061
152582291,5sleep00-21swapper/019:32:170
11312291,5sleep00-21swapper/021:46:000
1114299295,4cyclictest81rcu_preempt20:40:491
1114299294,4cyclictest81rcu_preempt00:15:341
11142992920,6cyclictest5871-21diskstats22:00:141
1114299291,23cyclictest6198-21df_inode20:35:141
1114199298,4cyclictest17225-21aten_r4power_cu21:05:120
1114199294,20cyclictest29660-21/usr/sbin/munin21:35:290
1114199293,16cyclictest3-21ksoftirqd/000:31:480
1114199292,14cyclictest11564-21packagekitd00:54:130
1114199291,7cyclictest4767-21runrttasks23:22:060
11141992914,5cyclictest3-21ksoftirqd/023:51:450
11141992913,6cyclictest3-21ksoftirqd/019:50:520
1114199291,14cyclictest4921-21taskset20:30:260
85742281,5sleep10-21swapper/122:05:321
52742281,5sleep10-21swapper/121:58:501
37312281,5sleep10-21swapper/120:28:341
33932281,5sleep00-21swapper/021:53:470
28672281,5sleep10-21swapper/123:17:111
242392280,4sleep1211ktimersoftd/122:50:001
18012281,5sleep10-21swapper/120:24:101
162182281,5sleep10-21swapper/123:53:561
145802281,5sleep10-21swapper/122:22:311
124972281,5sleep00-21swapper/023:44:130
1114299288,7cyclictest0-21swapper/122:15:161
1114299285,4cyclictest81rcu_preempt19:55:481
1114299285,13cyclictest40250irq/92-i91500:50:161
1114299283,4cyclictest81rcu_preempt22:50:351
1114299282,21cyclictest12784-21head20:50:281
11142992818,6cyclictest16768-21cat19:35:291
1114299281,6cyclictest27632-21pidof00:25:001
1114299281,5cyclictest81rcu_preempt21:33:411
1114299281,4cyclictest81rcu_preempt22:12:391
1114299281,22cyclictest14043-21uname20:55:191
1114199284,17cyclictest6264-21memory22:00:230
11141992814,4cyclictest3-21ksoftirqd/023:03:390
11141992813,5cyclictest3-21ksoftirqd/023:55:050
11141992812,14cyclictest0-21swapper/023:46:390
90322271,4sleep00-21swapper/022:08:410
86282271,5sleep10-21swapper/123:33:141
67792271,5sleep10-21swapper/123:28:321
58952271,5sleep00-21swapper/020:35:020
263422270,5sleep11114299cyclictest22:55:131
25522271,5sleep10-21swapper/100:43:171
25522271,5sleep10-21swapper/100:43:161
207602271,5sleep10-21swapper/119:45:511
166562271,5sleep10-21swapper/121:00:581
1114299274,9cyclictest28446-21diskstats23:00:151
1114299274,7cyclictest17814-21iostat_ios21:05:201
1114299271,4cyclictest81rcu_preempt00:37:011
1114299271,22cyclictest9238-21df23:35:121
1114199278,5cyclictest21372-21grep22:40:210
31422261,5sleep10-21swapper/121:51:161
264022261,5sleep10-21swapper/121:29:281
1114299266,5cyclictest40250irq/92-i91500:06:221
11142992618,5cyclictest30612-21cstates21:40:111
1114299243,19cyclictest0-21swapper/121:10:021
11142992415,5cyclictest25795-21cat20:00:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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