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2025-12-05 - 23:00

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 Fri Dec 05, 2025 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12489912641223,34cyclictest29996-21grep09:15:181
12479911411095,34cyclictest1892-21hddtemp_smartct07:25:160
12489911061087,15cyclictest1675-21expr07:25:131
9592557510,32sleep00-21swapper/007:22:440
7062518484,21sleep10-21swapper/107:20:031
124799199168,14cyclictest0-21swapper/009:15:180
765821100,9sleep1124899cyclictest09:59:411
249832850,9sleep1124899cyclictest10:50:281
121202840,4sleep041ktimersoftd/010:37:090
43342780,3sleep00-21swapper/009:55:270
277532780,5sleep00-21swapper/009:12:550
281352770,3sleep128136-21rm09:13:291
124899539,7cyclictest22-21ksoftirqd/110:48:401
1248995316,6cyclictest22-21ksoftirqd/112:20:111
124899527,6cyclictest22-21ksoftirqd/111:31:271
124899527,6cyclictest22-21ksoftirqd/110:04:091
1248995213,5cyclictest22-21ksoftirqd/109:23:591
124899519,6cyclictest22-21ksoftirqd/109:50:551
124899518,6cyclictest22-21ksoftirqd/110:23:271
124899512,10cyclictest22-21ksoftirqd/111:42:131
124899509,6cyclictest22-21ksoftirqd/112:02:101
124899508,6cyclictest22-21ksoftirqd/109:35:471
124899507,6cyclictest22-21ksoftirqd/110:11:351
1248995021,4cyclictest22-21ksoftirqd/110:09:301
1248995013,5cyclictest22-21ksoftirqd/109:40:501
124899498,6cyclictest22-21ksoftirqd/112:39:351
124899498,6cyclictest22-21ksoftirqd/111:27:061
1248994914,13cyclictest22-21ksoftirqd/111:07:491
1248994912,7cyclictest22-21ksoftirqd/112:11:151
1248994912,5cyclictest22-21ksoftirqd/111:45:301
1248994911,6cyclictest22-21ksoftirqd/109:45:231
124899487,6cyclictest22-21ksoftirqd/111:12:361
124899487,6cyclictest22-21ksoftirqd/110:55:111
124899487,6cyclictest22-21ksoftirqd/110:31:281
124899485,6cyclictest22-21ksoftirqd/110:42:581
1248994814,6cyclictest22-21ksoftirqd/107:32:081
1248994812,5cyclictest22-21ksoftirqd/112:50:321
160412470,7sleep10-21swapper/111:15:151
124899476,5cyclictest22-21ksoftirqd/111:35:541
124899476,4cyclictest22-21ksoftirqd/111:01:521
124899471,7cyclictest22-21ksoftirqd/112:05:101
1248994715,5cyclictest22-21ksoftirqd/109:30:021
1248994710,6cyclictest22-21ksoftirqd/112:30:131
124899461,7cyclictest22-21ksoftirqd/112:47:141
124899461,7cyclictest22-21ksoftirqd/110:19:071
124899461,6cyclictest22-21ksoftirqd/112:25:031
124899461,6cyclictest22-21ksoftirqd/109:25:441
1248994610,7cyclictest22-21ksoftirqd/112:41:411
103082460,9sleep0124799cyclictest09:28:320
124899451,6cyclictest22-21ksoftirqd/111:56:231
124899438,6cyclictest22-21ksoftirqd/111:20:171
124899437,6cyclictest22-21ksoftirqd/110:38:361
124899432,6cyclictest22-21ksoftirqd/110:27:011
124899428,16cyclictest22-21ksoftirqd/112:16:561
124899425,6cyclictest22-21ksoftirqd/108:23:431
1248994222,4cyclictest22-21ksoftirqd/107:55:201
124899417,4cyclictest81rcu_preempt08:40:241
124899416,4cyclictest81rcu_preempt11:50:301
1248994023,4cyclictest22-21ksoftirqd/108:55:181
1247994012,15cyclictest23055-21sensors_temp11:55:280
124899394,4cyclictest81rcu_preempt07:40:171
124899386,4cyclictest81rcu_preempt08:46:301
124899385,4cyclictest81rcu_preempt08:29:551
1248993819,5cyclictest22-21ksoftirqd/107:35:561
124899381,6cyclictest22-21ksoftirqd/109:03:501
124799386,15cyclictest2220-21dbus-daemon09:05:570
124899376,4cyclictest81rcu_preempt08:20:001
124899376,4cyclictest81rcu_preempt08:04:091
1248993720,4cyclictest22-21ksoftirqd/108:10:191
1247993710,4cyclictest81rcu_preempt10:29:220
1248993619,4cyclictest22-21ksoftirqd/108:31:091
1248993617,4cyclictest22-21ksoftirqd/108:06:391
124799363,4cyclictest81rcu_preempt11:30:290
1247993620,5cyclictest27383-21iostat_ios12:00:190
1247993611,12cyclictest24357-21diskmemload11:10:290
269622350,2sleep026960-21tr09:45:230
133132351,30sleep013330-21diskstats10:05:150
1247993515,6cyclictest5697-21diskstats12:45:170
124799351,21cyclictest28657-21switchtime10:20:290
124899345,4cyclictest81rcu_preempt09:09:351
124799345,5cyclictest81rcu_preempt09:35:020
124799343,14cyclictest2220-21dbus-daemon10:56:300
124899336,4cyclictest81rcu_preempt08:51:241
124899334,4cyclictest81rcu_preempt07:53:281
124799339,4cyclictest81rcu_preempt10:17:110
124799338,13cyclictest20783-21taskset08:50:530
124799336,5cyclictest81rcu_preempt11:15:120
124799336,4cyclictest81rcu_preempt11:46:560
124799336,4cyclictest81rcu_preempt07:32:160
124799334,4cyclictest81rcu_preempt11:20:020
124799334,4cyclictest81rcu_preempt10:00:260
124799333,4cyclictest81rcu_preempt10:13:270
1247993312,6cyclictest8422-21ntp_states11:40:240
124799331,15cyclictest0-21swapper/012:09:590
58592320,5sleep05846-21munin-run11:05:010
208262321,27sleep020837-21ssh11:53:530
124799324,4cyclictest81rcu_preempt12:52:170
124799323,4cyclictest81rcu_preempt12:30:240
124799323,4cyclictest81rcu_preempt09:40:380
124799323,15cyclictest2920-21diskstats11:35:130
124799322,4cyclictest81rcu_preempt12:24:290
124799321,4cyclictest81rcu_preempt12:15:400
1247993213,5cyclictest0-21swapper/011:07:260
1247993213,14cyclictest27698-21ssh11:26:480
92102311,5sleep00-21swapper/010:34:560
260312311,26sleep026045-21ssh10:51:220
12672311,5sleep00-21swapper/009:52:350
1248993116,4cyclictest22-21ksoftirqd/107:50:011
124899311,11cyclictest22-21ksoftirqd/108:38:371
124799313,5cyclictest81rcu_preempt12:35:110
124799312,5cyclictest81rcu_preempt10:40:250
124799311,18cyclictest12781-21python09:30:300
1247993110,5cyclictest5443-21unixbench_singl12:10:320
124799305,13cyclictest81rcu_preempt12:25:190
124799303,4cyclictest81rcu_preempt09:23:430
124799301,18cyclictest6926-21pidof07:41:000
1247993011,6cyclictest19998-21ssh10:45:240
1247993011,6cyclictest12647-21needreboot08:10:240
1247993010,7cyclictest1934-21grep12:40:380
124799299,7cyclictest3020-21runrttasks07:59:280
124799297,5cyclictest3020-21runrttasks07:39:460
124799291,23cyclictest16064-21python08:25:270
124799291,11cyclictest0-21swapper/008:40:200
112912291,5sleep00-21swapper/008:05:300
110842291,5sleep00-21swapper/008:04:540
83792281,5sleep00-21swapper/007:53:030
178972281,5sleep00-21swapper/008:38:430
146252281,5sleep00-21swapper/008:22:190
124799283,13cyclictest0-21swapper/008:47:500
124799281,14cyclictest8021-21wc07:50:000
170002271,5sleep00-21swapper/008:30:580
124799271,12cyclictest2220-21dbus-daemon08:19:430
124799268,6cyclictest30944-21snmpd09:01:170
124799261,17cyclictest0-21swapper/008:55:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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