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2026-05-11 - 00:05

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 Sun May 10, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
105289912131168,32cyclictest10961-21df_inode07:25:150
105309911151083,26cyclictest30507-21ntp_states11:05:241
101692570524,29sleep10-21swapper/107:21:491
102462466417,32sleep00-21swapper/007:22:360
10530992451,13cyclictest0-21swapper/107:25:141
1052899222197,22cyclictest0-21swapper/011:05:240
10530998211,38cyclictest20582-21/usr/sbin/munin10:40:161
10530998017,35cyclictest10825-21sort10:15:011
10530997810,31cyclictest24725-21switchtime12:15:281
1053099751,40cyclictest5227-21/usr/sbin/munin10:00:231
1053099742,38cyclictest26041-21fschecks_time12:20:151
1053099722,34cyclictest31554-21/usr/sbin/munin11:10:151
1053099722,34cyclictest31554-21/usr/sbin/munin11:10:151
1053099721,37cyclictest16641-21hddtemp_smartct11:55:171
1053099721,35cyclictest9399-21basename08:45:111
10530997210,29cyclictest28710-21if_eth009:35:191
1053099712,34cyclictest29608-21df_inode12:30:141
1053099711,38cyclictest27802-21/usr/sbin/munin11:00:201
1053099711,38cyclictest18600-21if_eth012:00:151
1053099711,37cyclictest5965-21chrt12:52:031
1053099711,37cyclictest15697-21if_eth007:35:191
1053099711,37cyclictest14232-21latency_hist11:50:021
1053099711,36cyclictest27930-21chrt09:34:271
1053099711,36cyclictest27904-21cut12:25:151
1053099711,36cyclictest18224-21chrt09:06:231
1053099711,35cyclictest24497-21chrt07:59:231
1053099703,38cyclictest19708-21mailstats09:10:251
1053099702,34cyclictest24117-21chrt09:23:501
1053099702,34cyclictest22497-21chrt07:53:061
1053099701,39cyclictest3334-21/usr/sbin/munin09:55:121
1053099701,36cyclictest8989-21chrt08:43:131
1053099701,36cyclictest6300-21chrt11:27:091
1053099701,36cyclictest20479-21if_eth012:05:171
1053099701,35cyclictest8789-21chrt10:09:481
1053099701,35cyclictest22036-21chrt09:16:561
1053099701,35cyclictest16680-21chrt09:04:501
1053099701,35cyclictest14172-21chrt10:21:571
1053099701,35cyclictest1330-21chrt09:50:051
1053099701,35cyclictest12574-21chrt08:51:231
1053099701,34cyclictest31890-21chrt08:17:591
1053099701,34cyclictest14406-21chrt08:55:551
1053099701,34cyclictest11144-21taskset10:15:131
1053099692,34cyclictest4025-21chrt12:46:231
1053099692,34cyclictest22615-21ntp_states12:10:221
1053099692,34cyclictest22447-21diskstats10:45:141
1053099692,33cyclictest5850-21diskstats08:35:151
1053099692,33cyclictest30869-21ntp_states09:40:231
1053099692,33cyclictest27444-21ntp_states08:05:241
1053099692,31cyclictest32413-21hddtemp_smartct09:45:161
1053099691,37cyclictest9178-21if_eth011:35:191
1053099691,37cyclictest17071-21if_eth010:30:191
1053099691,35cyclictest30119-21chrt08:14:061
1053099691,35cyclictest25771-21chrt09:26:301
1053099691,35cyclictest25185-21cut08:00:151
1053099691,35cyclictest2388-21chrt11:16:421
1053099691,35cyclictest20665-21chrt07:48:331
1053099691,35cyclictest2034-21chrt12:41:371
1053099691,35cyclictest15977-21chrt10:26:101
1053099691,35cyclictest15757-21chrt11:52:401
1053099691,35cyclictest10511-21chrt11:40:101
1053099691,34cyclictest27527-21chrt10:59:051
1053099691,34cyclictest25491-21chrt10:52:241
1053099691,34cyclictest17873-21copy07:40:281
1053099691,33cyclictest4511-21ntp_states08:30:251
1053099691,33cyclictest20169-21grep10:40:001
1053099691,32cyclictest31885-21chrt12:35:221
1053099681,35cyclictest2225-21dbus-daemon11:20:161
1053099681,34cyclictest2435-21ls08:25:231
1053099681,33cyclictest13079-21munin-node07:30:061
1053099681,32cyclictest643-21ntp_states08:20:251
1053099652,36cyclictest7230-21hddtemp_smartct11:30:171
10528994424,4cyclictest40250irq/92-i91510:58:460
226722430,21sleep01052899cyclictest12:10:230
10528994134,4cyclictest3-21ksoftirqd/011:40:000
1052899407,5cyclictest3-21ksoftirqd/007:54:440
1052899403,7cyclictest1953-21cut09:50:190
1052899401,16cyclictest16733-21taskset07:38:510
1052899397,5cyclictest81rcu_preempt10:20:310
1052899391,4cyclictest81rcu_preempt10:47:180
10528993914,4cyclictest81rcu_preempt08:30:210
10528993826,4cyclictest40250irq/92-i91508:40:250
10528993811,14cyclictest20775-21/usr/sbin/munin09:15:120
10528993810,4cyclictest81rcu_preempt09:49:400
1052899374,18cyclictest31850-21diskstats11:10:150
1052899374,18cyclictest31850-21diskstats11:10:140
10528993720,4cyclictest3-21ksoftirqd/009:25:260
10528993710,4cyclictest81rcu_preempt12:49:550
10528993710,4cyclictest81rcu_preempt11:04:390
1052899367,4cyclictest81rcu_preempt09:10:250
1052899361,7cyclictest3-21ksoftirqd/010:42:200
1052899361,6cyclictest3-21ksoftirqd/009:08:060
10528993611,4cyclictest81rcu_preempt09:43:260
10528993610,4cyclictest81rcu_preempt11:40:280
1052899358,4cyclictest81rcu_preempt12:50:060
1052899358,4cyclictest81rcu_preempt12:22:120
1052899358,4cyclictest81rcu_preempt12:16:390
1052899358,10cyclictest3-21ksoftirqd/011:20:270
1052899356,8cyclictest3-21ksoftirqd/008:03:520
1052899355,9cyclictest3-21ksoftirqd/010:04:050
1052899355,4cyclictest81rcu_preempt08:56:050
1052899351,6cyclictest3-21ksoftirqd/012:31:250
1052899351,6cyclictest10525-21cyclictest09:55:150
1052899351,4cyclictest81rcu_preempt11:15:120
10528993512,4cyclictest81rcu_preempt12:26:350
10528993512,4cyclictest81rcu_preempt08:48:410
1052899347,4cyclictest81rcu_preempt12:02:540
1052899347,4cyclictest81rcu_preempt08:50:560
1052899346,4cyclictest81rcu_preempt08:25:380
1052899346,4cyclictest81rcu_preempt07:31:520
1052899345,14cyclictest11837-21kworker/0:107:40:240
1052899341,6cyclictest3-21ksoftirqd/010:18:230
10528993412,4cyclictest81rcu_preempt11:55:310
10528993411,4cyclictest81rcu_preempt10:09:520
10528993411,4cyclictest81rcu_preempt09:34:080
10528993325,5cyclictest3-21ksoftirqd/007:55:200
1052899331,6cyclictest3-21ksoftirqd/010:51:370
1052899331,4cyclictest81rcu_preempt11:53:230
1052899331,4cyclictest81rcu_preempt08:10:160
1052899326,4cyclictest81rcu_preempt12:40:340
10528993213,6cyclictest20932-21python12:05:270
1052899321,15cyclictest27836-21unixbench_singl08:05:280
10528993211,4cyclictest81rcu_preempt10:36:360
10528993210,4cyclictest81rcu_preempt11:34:350
104162321,5sleep00-21swapper/010:12:140
1052899319,3cyclictest81rcu_preempt11:49:410
1052899317,4cyclictest81rcu_preempt07:46:020
1052899315,8cyclictest3-21ksoftirqd/009:03:410
1052899315,4cyclictest81rcu_preempt11:27:380
1052899315,4cyclictest81rcu_preempt08:17:330
1052899314,8cyclictest3-21ksoftirqd/010:34:150
1052899311,4cyclictest81rcu_preempt09:20:260
10528993111,4cyclictest81rcu_preempt12:35:090
1052899308,3cyclictest81rcu_preempt09:38:120
1052899302,4cyclictest81rcu_preempt08:39:370
1052899301,4cyclictest81rcu_preempt08:20:330
1052899292,13cyclictest3-21ksoftirqd/010:25:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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