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2025-12-25 - 20:07

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 Thu Dec 25, 2025 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32769912661239,22cyclictest0-21swapper/107:25:101
32759912431198,31cyclictest3708-21df07:25:130
32769911811155,9cyclictest18707-21apt-get08:02:041
28912693648,30sleep00-21swapper/007:21:340
21382532484,31sleep10-21swapper/107:20:241
698521170,5sleep10-21swapper/111:50:591
121512920,4sleep012148-21hddtemp_smartct07:45:180
295442880,7sleep00-21swapper/009:28:110
3275998360,20cyclictest0-21swapper/008:02:030
122612780,3sleep1201rcuc/110:50:131
227052740,4sleep041ktimersoftd/009:20:280
21822650,3sleep00-21swapper/010:40:100
327699499,3cyclictest81rcu_preempt11:16:371
327699462,9cyclictest0-21swapper/112:00:461
3276994616,6cyclictest22-21ksoftirqd/109:42:111
3276994613,4cyclictest22-21ksoftirqd/112:11:551
327699458,6cyclictest21796-21diskstats12:40:141
327699454,13cyclictest22-21ksoftirqd/111:07:221
327699454,10cyclictest0-21swapper/112:26:221
327699453,11cyclictest0-21swapper/112:34:461
327699452,9cyclictest0-21swapper/110:41:231
327699451,9cyclictest0-21swapper/111:00:081
3276994515,6cyclictest22-21ksoftirqd/112:47:301
3276994514,4cyclictest22-21ksoftirqd/111:35:121
3276994514,4cyclictest22-21ksoftirqd/107:35:391
3276994514,3cyclictest22-21ksoftirqd/112:19:541
3276994513,5cyclictest22-21ksoftirqd/111:30:441
327699443,10cyclictest0-21swapper/110:29:121
327699442,9cyclictest0-21swapper/110:55:281
327699442,9cyclictest0-21swapper/110:08:521
3276994412,4cyclictest22-21ksoftirqd/110:38:101
3276994411,4cyclictest22-21ksoftirqd/107:33:411
327699432,9cyclictest0-21swapper/112:36:371
327699432,9cyclictest0-21swapper/111:46:501
327699432,9cyclictest0-21swapper/110:17:211
327699432,8cyclictest0-21swapper/110:01:171
3276994321,4cyclictest22-21ksoftirqd/111:21:221
327699431,9cyclictest0-21swapper/111:57:281
327699431,9cyclictest0-21swapper/111:28:071
3276994316,6cyclictest22-21ksoftirqd/110:10:501
3276994312,5cyclictest22-21ksoftirqd/112:06:331
3276994311,4cyclictest22-21ksoftirqd/109:35:171
3276994311,4cyclictest22-21ksoftirqd/109:22:411
327699427,6cyclictest22-21ksoftirqd/110:21:131
327699424,5cyclictest3859-21cut08:50:011
327699422,9cyclictest0-21swapper/111:40:381
327699422,9cyclictest0-21swapper/111:10:381
327699422,9cyclictest0-21swapper/109:11:081
327699422,9cyclictest0-21swapper/109:00:111
327699421,9cyclictest0-21swapper/109:15:261
3276994216,6cyclictest22-21ksoftirqd/112:23:211
3276994215,5cyclictest22-21ksoftirqd/110:31:571
3276994213,4cyclictest22-21ksoftirqd/108:28:091
3276994211,4cyclictest22-21ksoftirqd/108:24:541
3276994211,3cyclictest22-21ksoftirqd/108:10:081
327699419,5cyclictest22-21ksoftirqd/109:58:391
327699418,9cyclictest22-21ksoftirqd/109:30:071
327699415,6cyclictest909-21ntpq08:40:251
327699413,10cyclictest0-21swapper/108:56:081
327699411,8cyclictest0-21swapper/109:45:241
3276994116,5cyclictest22-21ksoftirqd/109:28:061
3276994115,6cyclictest22-21ksoftirqd/108:05:061
3276994115,5cyclictest22-21ksoftirqd/112:50:441
327699401,8cyclictest0-21swapper/107:40:081
3276994015,5cyclictest22-21ksoftirqd/109:51:271
3276994012,9cyclictest22-21ksoftirqd/108:52:351
327699398,6cyclictest22-21ksoftirqd/110:45:011
327699398,6cyclictest22-21ksoftirqd/110:45:011
3276993815,6cyclictest22-21ksoftirqd/108:33:051
3276993814,8cyclictest22-21ksoftirqd/108:18:071
3276993812,4cyclictest22-21ksoftirqd/107:51:471
3276993812,3cyclictest22-21ksoftirqd/107:55:521
3276993811,4cyclictest22-21ksoftirqd/108:38:361
327599386,18cyclictest40550irq/92-i91511:48:080
3276993722,4cyclictest22-21ksoftirqd/109:05:121
3276993713,4cyclictest22-21ksoftirqd/107:46:061
12942370,23sleep03-21ksoftirqd/009:32:160
108502371,32sleep010861-21ssh09:41:500
47142361,31sleep03955-21/usr/sbin/munin08:50:230
327599367,7cyclictest20930-21ssh10:59:240
327599365,4cyclictest81rcu_preempt08:58:510
327599365,28cyclictest0-21swapper/012:09:150
3275993610,13cyclictest3890-21latency_hist08:50:010
3275993527,6cyclictest0-21swapper/011:55:560
327599351,31cyclictest0-21swapper/011:03:160
327599351,22cyclictest10894-21ssh12:29:110
149322350,3sleep0111rcuc/012:00:110
107712350,5sleep0111rcuc/011:21:340
327599345,4cyclictest81rcu_preempt09:50:120
3275993425,5cyclictest28663-21ssh11:06:360
327599342,4cyclictest11316-21diskmemload11:35:150
327599342,10cyclictest0-21swapper/010:50:130
327599341,5cyclictest631-21ssh12:18:360
327599341,29cyclictest15933-21kworker/0:209:38:350
3275993411,5cyclictest81rcu_preempt12:40:130
3275993410,12cyclictest0-21swapper/010:47:060
3275993410,12cyclictest0-21swapper/010:47:050
285922341,4sleep028661-21cat08:30:000
134152345,4sleep081rcu_preempt11:25:110
47462331,28sleep04757-21ssh10:09:340
327599338,12cyclictest15246-21basename07:55:000
327599336,4cyclictest81rcu_preempt09:12:510
327599334,4cyclictest81rcu_preempt12:10:150
327599334,4cyclictest81rcu_preempt08:40:120
327599333,16cyclictest0-21swapper/011:50:170
327599332,28cyclictest0-21swapper/012:36:360
327599332,27cyclictest0-21swapper/012:47:550
3275993313,6cyclictest30614-21ntp_states10:35:240
327599331,30cyclictest0-21swapper/010:13:160
327599331,30cyclictest0-21swapper/007:38:560
327599328,4cyclictest81rcu_preempt12:20:140
327599324,4cyclictest81rcu_preempt10:30:450
327599323,4cyclictest81rcu_preempt09:58:440
327599322,25cyclictest31965-21irqstats11:10:200
327599321,5cyclictest81rcu_preempt10:29:460
327599321,28cyclictest0-21swapper/011:41:160
327599315,4cyclictest12065-21df_inode12:30:140
327599314,4cyclictest81rcu_preempt11:34:060
327599313,15cyclictest0-21swapper/010:20:200
327599311,4cyclictest81rcu_preempt09:08:520
3275993112,5cyclictest7727-21/usr/sbin/munin09:00:250
3275993110,11cyclictest0-21swapper/010:02:140
326312314,4sleep024232-21kworker/0:012:52:210
128652311,5sleep00-21swapper/010:17:150
327599308,6cyclictest30497-21gdbus08:08:480
3275993024,3cyclictest0-21swapper/009:15:160
327599301,4cyclictest81rcu_preempt08:24:540
327599301,26cyclictest111-21usb-storage07:30:360
3275993011,6cyclictest11316-21diskmemload11:16:580
327599296,5cyclictest40550irq/92-i91508:18:070
327599293,13cyclictest13625-21df09:45:130
3275992910,6cyclictest28757-21taskset08:30:080
321892291,5sleep00-21swapper/008:38:190
228572291,5sleep00-21swapper/008:14:030
327599271,4cyclictest81rcu_preempt07:41:320
167492271,5sleep00-21swapper/007:56:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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