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2026-06-19 - 00:03

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 highest latencies:
System rack9slot4s (updated Thu Jun 18, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
325669912431214,25cyclictest18868-21kworker/0:307:25:120
325679911971182,12cyclictest0-21swapper/108:10:161
320942550504,30sleep00-21swapper/007:20:370
322092465370,31sleep10-21swapper/107:21:501
325669912097,18cyclictest0-21swapper/008:10:160
3256799105100,3cyclictest0-21swapper/107:25:121
1137121030,26sleep00-21swapper/009:15:280
179502810,9sleep03256699cyclictest12:25:250
8562500,4sleep10-21swapper/110:15:141
23412411,34sleep12450-21wget10:20:111
3256799396,28cyclictest40250irq/92-i91510:50:111
32567993823,11cyclictest22-21ksoftirqd/108:30:191
32567993722,6cyclictest22-21ksoftirqd/111:15:271
32567993621,11cyclictest22-21ksoftirqd/111:10:111
3256699363,26cyclictest40250irq/92-i91508:18:340
3256699361,11cyclictest81rcu_preempt11:05:300
32566993610,11cyclictest21635-21fschecks_time11:10:150
35782351,9sleep00-21swapper/008:55:240
3256699352,12cyclictest81rcu_preempt11:54:280
3256699351,11cyclictest81rcu_preempt10:34:380
286552351,30sleep028832-21/usr/sbin/munin08:35:270
168802350,4sleep0111rcuc/009:30:260
157762351,4sleep015902-21latency_hist09:30:010
3256799344,7cyclictest81rcu_preempt11:55:251
3256799343,8cyclictest81rcu_preempt09:40:291
32567993427,4cyclictest22-21ksoftirqd/112:10:161
32567993426,5cyclictest22-21ksoftirqd/110:35:181
3256699345,5cyclictest81rcu_preempt10:15:260
210862341,29sleep02401-21NetworkManager09:41:270
3256799334,7cyclictest81rcu_preempt07:30:111
3256799332,8cyclictest81rcu_preempt11:20:171
3256799332,8cyclictest81rcu_preempt08:45:271
32567993326,4cyclictest22-21ksoftirqd/112:10:001
32567993326,4cyclictest22-21ksoftirqd/110:10:151
32567993326,4cyclictest22-21ksoftirqd/109:30:251
32567993326,4cyclictest22-21ksoftirqd/109:25:111
32567993326,4cyclictest22-21ksoftirqd/108:10:001
32567993326,4cyclictest22-21ksoftirqd/108:00:211
32567993325,5cyclictest22-21ksoftirqd/112:50:211
32567993324,4cyclictest22-21ksoftirqd/111:45:111
32567993322,8cyclictest22-21ksoftirqd/109:15:201
3256799331,29cyclictest40250irq/92-i91512:40:241
3256699339,19cyclictest6387-21munin-run09:05:000
3256699331,5cyclictest27071-21latency_hist10:00:000
3256699331,28cyclictest24815-21cron11:20:010
307382331,5sleep00-21swapper/010:09:060
306242331,4sleep030628-21aten_r4power_cu11:35:120
15682331,5sleep11605-21ntp_states08:50:231
3256799323,8cyclictest81rcu_preempt11:05:251
32567993226,4cyclictest22-21ksoftirqd/108:15:291
32567993225,4cyclictest22-21ksoftirqd/112:35:101
32567993225,4cyclictest22-21ksoftirqd/112:30:261
32567993225,4cyclictest22-21ksoftirqd/112:00:141
32567993225,4cyclictest22-21ksoftirqd/111:29:591
32567993225,4cyclictest22-21ksoftirqd/110:55:181
32567993225,4cyclictest22-21ksoftirqd/110:40:111
32567993225,4cyclictest22-21ksoftirqd/110:26:431
32567993225,4cyclictest22-21ksoftirqd/109:45:271
32567993225,4cyclictest22-21ksoftirqd/109:07:111
32567993225,4cyclictest22-21ksoftirqd/109:00:131
32567993225,4cyclictest22-21ksoftirqd/108:55:151
32567993225,4cyclictest22-21ksoftirqd/108:35:141
32567993225,4cyclictest22-21ksoftirqd/108:20:261
32567993225,4cyclictest22-21ksoftirqd/108:20:251
32567993225,4cyclictest22-21ksoftirqd/107:55:121
32567993225,4cyclictest22-21ksoftirqd/107:50:121
32567993225,4cyclictest22-21ksoftirqd/107:45:021
32567993225,4cyclictest22-21ksoftirqd/107:35:161
32567993224,5cyclictest22-21ksoftirqd/110:30:111
32566993212,7cyclictest22178-21wc08:20:120
32566993212,7cyclictest22178-21wc08:20:110
32566993211,6cyclictest24953-21df12:45:140
164352321,5sleep116503-21users12:20:281
90702311,26sleep09131-21switchtime10:35:280
32567993125,4cyclictest22-21ksoftirqd/109:55:161
32567993124,4cyclictest22-21ksoftirqd/112:45:161
32567993124,4cyclictest22-21ksoftirqd/112:27:421
32567993124,4cyclictest22-21ksoftirqd/112:15:261
32567993124,4cyclictest22-21ksoftirqd/111:50:121
32567993124,4cyclictest22-21ksoftirqd/111:43:581
32567993124,4cyclictest22-21ksoftirqd/110:05:161
32567993124,4cyclictest22-21ksoftirqd/110:00:111
32567993124,4cyclictest22-21ksoftirqd/109:50:161
32567993124,4cyclictest22-21ksoftirqd/109:35:111
32567993124,4cyclictest22-21ksoftirqd/109:20:151
32567993124,4cyclictest22-21ksoftirqd/108:40:281
32567993124,4cyclictest22-21ksoftirqd/108:25:161
32567993123,4cyclictest22-21ksoftirqd/107:45:101
3256699312,15cyclictest11056-21/usr/sbin/munin07:50:160
3256699311,4cyclictest40250irq/92-i91507:45:150
32566993111,7cyclictest7737-21ntp_states07:40:240
237722311,3sleep023922-21fschecks_time09:50:150
32567993024,4cyclictest22-21ksoftirqd/109:10:101
32567993023,4cyclictest22-21ksoftirqd/111:35:151
32567993023,4cyclictest22-21ksoftirqd/111:30:161
32567993023,4cyclictest22-21ksoftirqd/110:45:121
3256699308,11cyclictest27440-21if_eth011:25:180
3256699301,4cyclictest81rcu_preempt07:57:070
23492301,5sleep00-21swapper/008:53:210
62362291,5sleep00-21swapper/007:36:570
5652291,5sleep00-21swapper/008:49:370
45352291,5sleep00-21swapper/007:34:090
37322291,5sleep00-21swapper/010:20:440
32567992922,4cyclictest22-21ksoftirqd/111:00:161
3256699293,19cyclictest27931-21memory10:00:230
3256699292,23cyclictest21693-21ntp_states12:35:230
3256699292,14cyclictest24113-21df08:25:130
3256699291,4cyclictest81rcu_preempt12:52:470
3256699291,4cyclictest81rcu_preempt10:54:030
3256699291,23cyclictest5771-21taskset10:27:250
32566992910,6cyclictest12437-21irqstats10:45:210
263252291,5sleep00-21swapper/011:21:000
189132291,5sleep00-21swapper/011:02:100
176012291,5sleep00-21swapper/008:05:420
168812291,5sleep00-21swapper/010:55:450
13552291,5sleep00-21swapper/011:40:350
131372291,5sleep00-21swapper/012:14:360
92652281,5sleep00-21swapper/012:03:200
3256699289,7cyclictest6206-21tune2fs11:55:130
3256699289,5cyclictest29345-21sshd11:30:200
3256699282,5cyclictest81rcu_preempt09:05:260
3256699281,23cyclictest2225-21dbus-daemon10:12:010
3256699281,22cyclictest19080-21taskset12:30:110
3256699281,13cyclictest30487-21python08:40:270
150992281,4sleep00-21swapper/012:20:010
150072281,5sleep00-21swapper/012:19:310
136372281,5sleep00-21swapper/009:22:130
3256699279,6cyclictest3675-21chrt11:48:570
3256699278,6cyclictest23587-21ntp_states12:40:230
3256699272,3cyclictest0-21swapper/012:05:060
32566992718,5cyclictest26052-21fschecks_count08:30:140
3256699271,12cyclictest22238-21sort09:45:190
3256699268,14cyclictest18903-21timerandwakeup09:35:280
3256699251,16cyclictest0-21swapper/009:13:140
3256699251,12cyclictest15794-21chrt08:01:230
32566992510,5cyclictest11219-21users10:40:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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