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2026-03-27 - 19:47

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 Mar 27, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
200229912061196,7cyclictest0-21swapper/107:27:401
200219911281097,20cyclictest0-21swapper/007:27:190
197142549504,30sleep00-21swapper/007:22:220
197002500416,69sleep10-21swapper/107:22:121
64462550,8sleep02002199cyclictest08:10:230
151892520,8sleep12002299cyclictest10:35:471
2002199401,35cyclictest0-21swapper/009:13:150
2002299396,29cyclictest0-21swapper/111:06:161
20022993926,4cyclictest22-21ksoftirqd/111:20:151
2002199392,19cyclictest0-21swapper/010:10:440
2002299386,28cyclictest0-21swapper/112:32:551
2002199381,19cyclictest20769-21fschecks_time09:35:150
260012370,8sleep02002199cyclictest09:02:590
2002299373,5cyclictest0-21swapper/111:26:161
20022993727,6cyclictest5927-21/usr/sbin/munin11:00:171
2002199372,14cyclictest15761-21df_inode09:30:150
2002199371,7cyclictest14108-21wget10:35:170
2002199371,13cyclictest24341-21grep12:25:300
2002199371,10cyclictest81rcu_preempt09:53:490
197042371,4sleep119717-21sh09:34:351
2002299369,6cyclictest133412cpuspeed_turbos08:30:121
2002299361,6cyclictest20586-21ssh10:41:351
2002199366,27cyclictest111rcuc/012:00:380
2002199365,4cyclictest81rcu_preempt10:06:420
2002199363,29cyclictest0-21swapper/011:17:150
20021993614,12cyclictest0-21swapper/009:20:450
2002199361,15cyclictest19574-21/usr/sbin/munin12:20:290
2002199361,12cyclictest173222cut11:45:220
2002299356,17cyclictest0-21swapper/112:35:331
2002299352,8cyclictest493-21munin-run09:15:011
2002199353,17cyclictest3953-21diskstats12:05:150
2002199351,5cyclictest29331-21ssh12:30:360
2002199351,21cyclictest8029-21ssh10:29:220
2002199351,20cyclictest30779-21ssh11:25:280
158412351,29sleep115855-21ssh12:17:071
99682340,7sleep00-21swapper/009:57:160
296762341,29sleep129690-21ssh10:50:501
268252340,7sleep02002199cyclictest07:40:150
2002299345,5cyclictest81rcu_preempt09:43:471
2002299345,4cyclictest81rcu_preempt11:10:221
2002299345,4cyclictest81rcu_preempt11:10:221
2002299344,5cyclictest81rcu_preempt12:22:481
2002299344,4cyclictest81rcu_preempt11:15:451
2002299342,8cyclictest0-21swapper/109:26:501
2002299342,28cyclictest0-21swapper/110:58:551
2002299341,28cyclictest21228-21ssh10:09:361
2002199343,4cyclictest81rcu_preempt10:04:430
20021993426,5cyclictest0-21swapper/012:18:360
20021993416,14cyclictest3-21ksoftirqd/008:25:440
2002199341,29cyclictest5013-21ssh10:59:560
2002199341,21cyclictest3056-21ssh10:24:100
2002199341,20cyclictest29594-21seq10:50:420
120382341,29sleep112048-21sh12:46:451
2002299333,5cyclictest81rcu_preempt12:10:171
2002299333,4cyclictest81rcu_preempt12:03:031
2002299333,28cyclictest0-21swapper/107:58:561
2002299333,27cyclictest0-21swapper/111:47:351
2002299332,5cyclictest81rcu_preempt12:54:311
2002299332,20cyclictest0-21swapper/109:22:441
2002299331,7cyclictest25225-21ssh11:53:541
20022993313,7cyclictest8472-21sleep10:30:001
2002299331,18cyclictest24424-21sh07:35:001
2002199338,5cyclictest81rcu_preempt09:25:270
2002199338,13cyclictest26295-21mailstats09:40:270
2002199338,11cyclictest2638-21iostat_ios11:30:180
2002199333,17cyclictest0-21swapper/011:23:190
20021993324,5cyclictest1968-21lldpad09:16:020
2002199332,12cyclictest0-21swapper/011:35:200
20021993318,13cyclictest0-21swapper/012:46:390
20021993311,8cyclictest1549-21grep07:59:370
2002199331,13cyclictest9201-21fschecks_time10:30:170
291852321,27sleep029220-21ntp_states07:45:230
2002299325,14cyclictest40550irq/92-i91510:30:281
2002299323,5cyclictest81rcu_preempt10:04:321
2002299323,4cyclictest81rcu_preempt12:26:161
2002299321,4cyclictest81rcu_preempt10:48:161
2002299321,4cyclictest81rcu_preempt09:38:161
2002299321,29cyclictest0-21swapper/112:06:561
20022993211,6cyclictest28089-21diskmemload09:47:051
20022993210,9cyclictest23713-21cat08:55:291
20021993225,5cyclictest0-21swapper/007:50:360
20021993225,5cyclictest0-21swapper/007:50:350
2002199321,4cyclictest81rcu_preempt12:50:060
2002199321,4cyclictest81rcu_preempt08:56:120
2002199321,29cyclictest0-21swapper/011:12:360
2002199321,29cyclictest0-21swapper/011:12:360
2002199321,29cyclictest0-21swapper/008:52:560
2002199321,29cyclictest0-21swapper/008:16:550
262672311,26sleep126356-21wget11:55:121
2002299312,16cyclictest25313-21memory07:35:221
2002299311,4cyclictest81rcu_preempt12:42:311
2002299311,4cyclictest81rcu_preempt11:34:341
2002299311,4cyclictest81rcu_preempt08:37:101
20022993112,6cyclictest3057-21unixbench_multi08:00:281
20022993111,17cyclictest0-21swapper/110:13:111
2002199316,13cyclictest27707-21taskset09:06:140
2002199312,18cyclictest0-21swapper/011:05:240
2002199312,17cyclictest0-21swapper/012:41:050
2002199312,17cyclictest0-21swapper/010:49:480
2002199312,16cyclictest0-21swapper/008:24:080
2002199311,3cyclictest0-21swapper/010:15:160
20021993113,6cyclictest5651-21df11:00:120
2002199311,13cyclictest31144-21python09:45:280
20022993025,3cyclictest0-21swapper/111:37:351
2002299302,4cyclictest81rcu_preempt09:56:311
2002299301,4cyclictest81rcu_preempt10:24:201
2002299301,4cyclictest81rcu_preempt08:54:471
2002299301,27cyclictest0-21swapper/109:51:391
2002299301,27cyclictest0-21swapper/109:16:551
2002299301,27cyclictest0-21swapper/107:53:361
2002299301,27cyclictest0-21swapper/107:53:361
2002199307,19cyclictest0-21swapper/008:42:130
2002199306,12cyclictest15445-21taskset11:43:450
2002199305,13cyclictest5035-21sed08:05:290
2002199303,4cyclictest81rcu_preempt11:52:040
2002199302,14cyclictest3302-21runrttasks08:35:350
2002199302,13cyclictest28089-21diskmemload10:41:450
2002199301,4cyclictest81rcu_preempt12:14:540
2002199301,4cyclictest81rcu_preempt11:56:060
20021993012,5cyclictest2771-21ssh12:36:590
146052301,5sleep00-21swapper/008:32:020
281042291,5sleep10-21swapper/107:43:421
2002299293,4cyclictest81rcu_preempt08:41:271
2002299292,4cyclictest81rcu_preempt10:18:181
20022992922,5cyclictest0-21swapper/108:21:351
2002299291,5cyclictest0-21swapper/111:42:361
2002199291,24cyclictest25993-21runrttasks07:36:270
20021992911,5cyclictest2396-21iostat08:00:160
20021992910,6cyclictest22732-21wget07:30:110
52202281,5sleep10-21swapper/108:07:111
204732281,5sleep10-21swapper/108:49:171
2002299281,4cyclictest81rcu_preempt07:48:291
2002199281,23cyclictest20451-21runrttasks08:49:020
20022992715,8cyclictest0-21swapper/108:25:181
2002299271,24cyclictest0-21swapper/108:15:151
2002299263,4cyclictest81rcu_preempt09:02:191
2002299251,8cyclictest6909-21grep08:10:301
2002299251,11cyclictest26960-21irqstats09:05:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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