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2026-03-19 - 22:51

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 all highest latencies:
System rack9slot4s (updated Thu Mar 19, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
241009912291219,7cyclictest0-21swapper/007:26:180
241019911101101,6cyclictest0-21swapper/107:26:391
239272596518,64sleep10-21swapper/107:23:471
239662562517,30sleep00-21swapper/007:24:100
228282990,7sleep02410099cyclictest10:40:100
192482890,3sleep019244-21ssh12:50:170
252992660,3sleep125298-21ssh12:22:241
24101995918,6cyclictest22-21ksoftirqd/110:35:291
24101995827,4cyclictest22-21ksoftirqd/112:10:301
24101995616,5cyclictest22-21ksoftirqd/112:35:181
24101995416,6cyclictest22-21ksoftirqd/112:45:301
24101995411,6cyclictest22-21ksoftirqd/109:40:451
24101995311,6cyclictest22-21ksoftirqd/111:03:561
2410199525,6cyclictest22-21ksoftirqd/110:14:121
24101995218,5cyclictest22-21ksoftirqd/111:45:191
24101995215,6cyclictest22-21ksoftirqd/110:55:171
24101995215,18cyclictest22-21ksoftirqd/111:14:421
24101995214,5cyclictest22-21ksoftirqd/111:50:111
24101995214,5cyclictest22-21ksoftirqd/111:50:111
24101995214,5cyclictest22-21ksoftirqd/107:55:091
24101995213,6cyclictest22-21ksoftirqd/111:15:241
24101995212,4cyclictest22-21ksoftirqd/109:14:071
24101995211,6cyclictest22-21ksoftirqd/111:39:181
24101995118,4cyclictest22-21ksoftirqd/111:21:141
24101995117,4cyclictest22-21ksoftirqd/109:48:041
24101995115,6cyclictest22-21ksoftirqd/110:30:281
24101995114,5cyclictest22-21ksoftirqd/108:15:111
24101995113,6cyclictest22-21ksoftirqd/108:45:111
24101995113,6cyclictest22-21ksoftirqd/107:45:271
24101995113,5cyclictest22-21ksoftirqd/112:15:171
24101995113,5cyclictest22-21ksoftirqd/109:55:111
24101995112,5cyclictest22-21ksoftirqd/108:50:111
24101995111,6cyclictest22-21ksoftirqd/111:06:481
24101995110,6cyclictest22-21ksoftirqd/112:09:291
2410199507,5cyclictest22-21ksoftirqd/110:46:051
2410199504,6cyclictest22-21ksoftirqd/110:42:511
2410199504,6cyclictest22-21ksoftirqd/110:24:461
24101995018,4cyclictest22-21ksoftirqd/112:26:061
24101995016,4cyclictest22-21ksoftirqd/107:32:591
24101995014,5cyclictest22-21ksoftirqd/111:55:121
24101995013,5cyclictest22-21ksoftirqd/112:00:151
24101995013,5cyclictest22-21ksoftirqd/111:40:231
24101995013,5cyclictest22-21ksoftirqd/107:35:121
24101995012,6cyclictest22-21ksoftirqd/112:51:331
24101995012,6cyclictest22-21ksoftirqd/109:25:301
24101995012,6cyclictest22-21ksoftirqd/108:35:161
24101995011,5cyclictest22-21ksoftirqd/110:15:091
2410199492,38cyclictest40550irq/92-i91509:00:121
24101994913,6cyclictest22-21ksoftirqd/112:42:591
24101994912,6cyclictest22-21ksoftirqd/108:30:251
24101994912,5cyclictest22-21ksoftirqd/108:40:201
24101994912,5cyclictest22-21ksoftirqd/108:05:221
24101994911,6cyclictest22-21ksoftirqd/108:20:111
24101994911,11cyclictest22-21ksoftirqd/110:00:441
24101994910,7cyclictest22-21ksoftirqd/112:34:091
24101994910,7cyclictest22-21ksoftirqd/112:34:091
2410199483,6cyclictest22-21ksoftirqd/110:05:321
24101994820,4cyclictest22-21ksoftirqd/111:26:071
24101994815,6cyclictest22-21ksoftirqd/109:24:201
24101994813,6cyclictest22-21ksoftirqd/108:11:461
24101994812,5cyclictest22-21ksoftirqd/108:25:111
24101994715,6cyclictest22-21ksoftirqd/109:18:151
24101994712,4cyclictest22-21ksoftirqd/109:32:461
2410199468,6cyclictest22-21ksoftirqd/109:51:201
24101994611,6cyclictest22-21ksoftirqd/107:40:271
24101994610,6cyclictest22-21ksoftirqd/111:30:071
24101994610,6cyclictest22-21ksoftirqd/109:36:431
2410199459,10cyclictest22-21ksoftirqd/110:29:261
24101994514,9cyclictest22-21ksoftirqd/110:51:581
24101994410,5cyclictest22-21ksoftirqd/107:52:221
24101994217,4cyclictest22-21ksoftirqd/108:00:111
24101994213,9cyclictest22-21ksoftirqd/108:59:001
2410199416,4cyclictest81rcu_preempt09:05:211
59392400,5sleep0111rcuc/012:35:270
2410099402,34cyclictest0-21swapper/012:07:150
24100993930,5cyclictest0-21swapper/012:19:160
2410099386,28cyclictest0-21swapper/012:20:360
2410099384,31cyclictest679-21ssh09:44:040
24100993728,5cyclictest8620-21perl10:25:150
2410099372,11cyclictest0-21swapper/011:13:510
2410099371,23cyclictest14982-21rm11:38:470
2410099362,5cyclictest81rcu_preempt10:55:270
2410099361,10cyclictest13425-21ssh09:56:210
2410099352,29cyclictest0-21swapper/009:37:150
2410099351,5cyclictest2193-21ssh12:31:560
2410099351,5cyclictest2193-21ssh12:31:550
2410099351,21cyclictest2601-21ssh11:59:450
109642351,30sleep010995-21munin-run11:35:010
24100993427,5cyclictest0-21swapper/008:00:160
24100993427,4cyclictest2403-21irqbalance10:15:560
2410099341,4cyclictest14131-21ssh09:24:360
2410099341,4cyclictest10115-21fschecks_count08:10:160
24100993411,10cyclictest10842-21python11:00:260
2410099340,4cyclictest81rcu_preempt10:02:450
182932341,5sleep00-21swapper/009:28:370
2410099334,4cyclictest81rcu_preempt10:05:160
2410099331,7cyclictest3332-21ssh09:13:050
2410099331,30cyclictest0-21swapper/011:19:160
24100993311,6cyclictest128682rm10:30:070
2410099331,11cyclictest6205-21chrt11:30:000
207202331,5sleep020734-21ssh10:37:400
311872321,26sleep031194-21iostat_ios07:40:190
2410099323,4cyclictest81rcu_preempt10:10:510
24100993224,5cyclictest14283-21netstat08:20:210
2410099322,15cyclictest19481-21ssh11:43:170
2410099321,5cyclictest0-21swapper/011:08:360
2410099321,29cyclictest0-21swapper/007:38:560
2410099321,10cyclictest81rcu_preempt10:23:250
24100993210,11cyclictest22081-21ssh09:32:050
84932311,5sleep00-21swapper/009:51:120
2410099313,4cyclictest81rcu_preempt09:19:250
24100993124,4cyclictest3-21ksoftirqd/009:46:370
2410099311,4cyclictest81rcu_preempt12:12:420
24100993111,5cyclictest29097-21sshd10:45:450
24100993110,6cyclictest23467-21ssh11:47:020
140352311,5sleep00-21swapper/012:45:020
56352301,5sleep00-21swapper/007:58:190
2410099306,3cyclictest81rcu_preempt09:07:150
2410099303,4cyclictest81rcu_preempt11:21:180
2410099303,11cyclictest10066-21perl12:40:160
24100993021,6cyclictest32156-21diskmemload11:52:470
24100993021,6cyclictest32156-21diskmemload11:52:460
2410099301,4cyclictest81rcu_preempt10:52:540
2410099301,26cyclictest0-21swapper/012:29:160
10922301,25sleep01268-21sed07:45:300
50822291,5sleep00-21swapper/012:01:110
38762291,5sleep00-21swapper/007:54:320
282262291,5sleep00-21swapper/007:32:130
242012291,5sleep00-21swapper/008:45:380
204972291,5sleep00-21swapper/008:36:240
186942291,5sleep00-21swapper/008:32:090
167802291,5sleep00-21swapper/008:26:460
126372291,5sleep00-21swapper/008:15:270
2410099283,4cyclictest81rcu_preempt08:09:130
2410099274,4cyclictest81rcu_preempt08:41:170
2410099269,5cyclictest81rcu_preempt09:00:130
24100992618,5cyclictest3-21ksoftirqd/008:59:210
24100992610,13cyclictest3-21ksoftirqd/008:50:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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