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2026-03-20 - 17:23

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 Fri Mar 20, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
241519912341225,6cyclictest0-21swapper/107:27:211
241509911271104,6cyclictest0-21swapper/007:26:560
233772762727,20sleep10-21swapper/107:20:261
236672460370,76sleep00-21swapper/007:20:310
2578321400,2sleep025784-21sleep11:50:000
2990221000,8sleep12415199cyclictest11:20:181
113262950,8sleep12415199cyclictest11:00:321
304502900,8sleep02415099cyclictest10:14:460
150422900,4sleep0111rcuc/011:38:320
15452770,3sleep10-21swapper/111:25:021
271622720,7sleep00-21swapper/012:24:440
71032680,5sleep17104-21fschecks_time09:50:151
2415199516,6cyclictest22-21ksoftirqd/109:25:591
2415199506,5cyclictest22-21ksoftirqd/110:21:181
2415199496,6cyclictest22-21ksoftirqd/110:43:211
24151994916,6cyclictest22-21ksoftirqd/110:33:001
115492490,23sleep122-21ksoftirqd/108:15:001
2415199486,6cyclictest22-21ksoftirqd/111:30:101
2415199474,6cyclictest22-21ksoftirqd/109:14:221
24151994717,6cyclictest22-21ksoftirqd/112:28:341
24151994716,5cyclictest22-21ksoftirqd/112:01:081
24151994716,5cyclictest22-21ksoftirqd/110:26:321
24151994715,5cyclictest22-21ksoftirqd/112:09:021
2415199463,10cyclictest0-21swapper/110:10:191
24151994621,4cyclictest22-21ksoftirqd/107:32:431
24151994617,5cyclictest22-21ksoftirqd/112:19:091
24151994616,8cyclictest22-21ksoftirqd/109:32:211
24151994616,6cyclictest22-21ksoftirqd/111:46:291
24151994616,6cyclictest22-21ksoftirqd/110:58:331
24151994616,6cyclictest22-21ksoftirqd/110:35:551
24151994616,5cyclictest22-21ksoftirqd/112:49:121
24151994616,5cyclictest22-21ksoftirqd/112:36:211
24151994615,6cyclictest22-21ksoftirqd/110:01:131
24151994613,4cyclictest22-21ksoftirqd/112:43:091
2415199455,6cyclictest22-21ksoftirqd/112:32:141
2415199453,10cyclictest0-21swapper/107:40:181
2415199452,10cyclictest0-21swapper/110:50:131
2415199452,10cyclictest0-21swapper/109:15:211
24151994516,5cyclictest22-21ksoftirqd/109:49:441
24151994516,5cyclictest22-21ksoftirqd/109:39:121
24151994515,6cyclictest22-21ksoftirqd/112:50:471
24151994515,5cyclictest22-21ksoftirqd/111:38:561
2415199448,3cyclictest81rcu_preempt10:08:181
2415199442,10cyclictest0-21swapper/110:18:031
24151994415,6cyclictest22-21ksoftirqd/109:44:261
24151994415,5cyclictest22-21ksoftirqd/111:13:551
24151994414,6cyclictest22-21ksoftirqd/110:46:331
24151994414,6cyclictest22-21ksoftirqd/108:34:021
2415199436,6cyclictest32201-21diskmemload11:59:451
2415199433,8cyclictest0-21swapper/111:08:031
2415199432,10cyclictest0-21swapper/112:20:251
2415199432,10cyclictest0-21swapper/111:40:331
24151994315,6cyclictest22-21ksoftirqd/111:54:251
24151994315,6cyclictest22-21ksoftirqd/111:15:061
24151994313,6cyclictest22-21ksoftirqd/108:39:321
24151994313,5cyclictest22-21ksoftirqd/109:58:011
24151994312,5cyclictest22-21ksoftirqd/109:20:411
24151994310,4cyclictest81rcu_preempt08:25:151
2415199429,4cyclictest81rcu_preempt08:20:121
2415199422,9cyclictest0-21swapper/109:01:061
2415199421,9cyclictest0-21swapper/108:15:191
2415199421,10cyclictest0-21swapper/107:55:251
2415199419,4cyclictest81rcu_preempt07:50:151
2415199411,9cyclictest0-21swapper/108:40:171
24151994111,4cyclictest81rcu_preempt07:46:141
24151994110,4cyclictest22-21ksoftirqd/112:12:281
24151994110,3cyclictest81rcu_preempt09:07:151
2415199409,4cyclictest81rcu_preempt08:58:211
2415199395,4cyclictest0-21swapper/108:45:091
24151993915,5cyclictest22-21ksoftirqd/108:05:191
24151993913,6cyclictest22-21ksoftirqd/107:35:111
2415199388,4cyclictest81rcu_preempt08:03:301
24151993820,4cyclictest22-21ksoftirqd/108:52:441
2415099385,4cyclictest81rcu_preempt12:31:090
2415099381,34cyclictest0-21swapper/008:53:560
299842371,4sleep029999-21irqstats09:40:210
2711923716,6sleep03-21ksoftirqd/011:17:210
2415099366,5cyclictest81rcu_preempt11:55:180
2415099364,17cyclictest13412-21diskstats12:10:130
2415099364,10cyclictest22427-21python10:05:300
2415099362,20cyclictest0-21swapper/011:41:440
2415099361,15cyclictest0-21swapper/011:09:550
66092351,30sleep02668-21sshd10:55:450
2415099354,4cyclictest81rcu_preempt12:26:370
2415099353,5cyclictest81rcu_preempt12:45:180
2415099353,4cyclictest81rcu_preempt11:23:030
33282341,29sleep03347-21ssh09:13:020
24150993426,4cyclictest16034-21ssh09:59:560
2415099341,9cyclictest3375-21timerwakeupswit07:50:260
2415099341,30cyclictest0-21swapper/009:17:550
2415099341,21cyclictest13972-21ssh09:24:180
2415099341,11cyclictest86542ssh10:25:140
2415099335,4cyclictest81rcu_preempt10:50:010
2415099334,4cyclictest81rcu_preempt10:03:350
2415099333,4cyclictest81rcu_preempt11:34:050
2415099333,4cyclictest81rcu_preempt10:39:350
2415099333,16cyclictest744-21memory07:45:230
2415099331,30cyclictest0-21swapper/008:11:550
2415099331,29cyclictest2403-21irqbalance09:45:560
2415099331,29cyclictest0-21swapper/009:36:360
24150993312,8cyclictest6356-21sh12:35:300
2415099331,20cyclictest28138-21ssh11:51:250
2415099331,20cyclictest17855-21ssh12:15:050
234732330,4sleep041ktimersoftd/010:40:190
209832331,4sleep020993-21ssh12:51:410
324292321,5sleep00-21swapper/010:15:360
2415099327,13cyclictest0-21swapper/012:05:130
24150993225,5cyclictest0-21swapper/008:19:570
2415099321,3cyclictest5383-21ssh11:28:350
24150993213,15cyclictest3-21ksoftirqd/010:31:030
2415099321,29cyclictest0-21swapper/008:20:360
2415099321,14cyclictest7498-21taskset08:02:350
24150993211,17cyclictest19068-21wc08:35:010
2415099314,4cyclictest81rcu_preempt12:00:140
2415099314,4cyclictest81rcu_preempt11:04:130
2415099313,8cyclictest23243-21diskstats08:45:140
2415099313,4cyclictest81rcu_preempt11:10:410
2415099312,4cyclictest81rcu_preempt10:22:410
2415099311,4cyclictest81rcu_preempt09:27:050
2415099311,4cyclictest81rcu_preempt08:58:460
2415099308,4cyclictest81rcu_preempt09:30:130
2415099304,12cyclictest28297-21taskset07:32:290
2415099302,12cyclictest21902-21ntp_states08:40:230
2415099301,5cyclictest29650-21switchtime09:00:280
2415099301,4cyclictest81rcu_preempt09:51:270
2415099301,4cyclictest19339-21/usr/sbin/munin08:35:120
2415099301,26cyclictest0-21swapper/012:42:350
2415099294,4cyclictest81rcu_preempt08:09:580
24150992922,5cyclictest0-21swapper/008:26:560
56542281,5sleep00-21swapper/007:58:050
318432281,5sleep00-21swapper/009:06:240
2415099281,3cyclictest81rcu_preempt07:36:000
2415099280,4cyclictest81rcu_preempt10:50:150
2415099261,12cyclictest30690-21basename07:40:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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