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2025-12-09 - 21:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #2

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 100 highest latencies:
System rack1slot2s.osadl.org (updated Tue Dec 09, 2025 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1062726766,0sleep20-21swapper/206:35:072
1067726564,0sleep10-21swapper/106:35:381
291350350,0irq/25-eth10-21swapper/306:34:583
1069123430,0sleep00-21swapper/006:35:490
11032991616,0cyclictest18089-21sensors10:24:230
28415070,0irq/27-eth0-tx-0-21swapper/007:31:110
35160,0ktimersoftd/30-21swapper/311:44:313
339960,0migration/34437-21munin-node09:34:223
339960,0migration/332391-21sh11:59:373
339960,0migration/327225-21sh10:09:423
339960,0migration/321459-21kthreadcore10:49:183
339960,0migration/321226-21sh09:46:553
339960,0migration/320083-21sh10:07:063
339960,0migration/319076-21sh10:26:223
339960,0migration/315834-21munin-node08:39:243
339960,0migration/313662-21sh09:19:213
339960,0migration/311924-21missed_timers07:24:183
28415060,0irq/27-eth0-tx-8522-21perl09:19:122
28415060,0irq/27-eth0-tx-5571-21munin-node06:59:120
28415060,0irq/27-eth0-tx-0-21swapper/212:06:362
28415060,0irq/27-eth0-tx-0-21swapper/211:42:592
28415060,0irq/27-eth0-tx-0-21swapper/211:31:382
28415060,0irq/27-eth0-tx-0-21swapper/211:28:532
28415060,0irq/27-eth0-tx-0-21swapper/211:16:102
28415060,0irq/27-eth0-tx-0-21swapper/210:59:062
28415060,0irq/27-eth0-tx-0-21swapper/210:44:102
28415060,0irq/27-eth0-tx-0-21swapper/210:29:462
28415060,0irq/27-eth0-tx-0-21swapper/210:22:112
28415060,0irq/27-eth0-tx-0-21swapper/210:13:582
28415060,0irq/27-eth0-tx-0-21swapper/210:01:352
28415060,0irq/27-eth0-tx-0-21swapper/209:48:462
28415060,0irq/27-eth0-tx-0-21swapper/209:39:322
28415060,0irq/27-eth0-tx-0-21swapper/209:31:292
28415060,0irq/27-eth0-tx-0-21swapper/209:08:442
28415060,0irq/27-eth0-tx-0-21swapper/209:02:162
28415060,0irq/27-eth0-tx-0-21swapper/208:51:202
249960,0watchdog/28270-21ssh08:58:132
179960,0migration/16296-21needreboot07:44:191
149960,0migration/05958-21fschecks_time09:59:120
149960,0migration/025756-21munin-node10:29:190
149960,0migration/02177-21sh11:43:480
149960,0migration/020931-21sh09:45:430
149960,0migration/015768-21sh09:02:060
149960,0migration/013332-21cpu10:04:120
110339960,0cyclictest0-21swapper/111:39:261
110329960,0cyclictest0-21swapper/010:50:130
110329960,0cyclictest0-21swapper/010:36:020
8225050,0irq/24-0000:00:31995-21latency_hist07:18:592
339950,0migration/36361-21latency_hist09:38:593
339950,0migration/3574-21kthreadcore10:14:183
339950,0migration/33245-21kthreadcore06:54:203
339950,0migration/328513-21latency_hist08:28:593
339950,0migration/319607-21cpuspeed_turbos11:34:093
339950,0migration/316655-21munin-node11:04:213
339950,0migration/316558-21runrttasks08:19:163
339950,0migration/316460-21kthreadcore06:39:173
339950,0migration/310024-21kthreadcore07:49:183
28415050,0irq/27-eth0-tx-27675-21ssh10:11:172
28415050,0irq/27-eth0-tx-18416-21munin-node11:09:152
28415050,0irq/27-eth0-tx-17949-21munin-node06:44:120
28415050,0irq/27-eth0-tx-12266-21munin-node07:04:200
28415050,0irq/27-eth0-tx-0-21swapper/211:52:162
28415050,0irq/27-eth0-tx-0-21swapper/211:46:142
28415050,0irq/27-eth0-tx-0-21swapper/211:22:322
28415050,0irq/27-eth0-tx-0-21swapper/211:08:182
28415050,0irq/27-eth0-tx-0-21swapper/210:36:322
28415050,0irq/27-eth0-tx-0-21swapper/210:28:432
28415050,0irq/27-eth0-tx-0-21swapper/210:08:452
28415050,0irq/27-eth0-tx-0-21swapper/209:56:562
28415050,0irq/27-eth0-tx-0-21swapper/209:24:292
28415050,0irq/27-eth0-tx-0-21swapper/209:24:292
28415050,0irq/27-eth0-tx-0-21swapper/209:10:462
28415050,0irq/27-eth0-tx-0-21swapper/208:44:392
28415050,0irq/27-eth0-tx-0-21swapper/208:40:572
28415050,0irq/27-eth0-tx-0-21swapper/006:39:120
28405050,0irq/26-eth0-rx-5715-21kthreadcore08:54:173
28405050,0irq/26-eth0-rx-28567-21forks10:34:123
28405050,0irq/26-eth0-rx-27949-21fschecks_time10:54:143
28405050,0irq/26-eth0-rx-27719-21ssh11:39:183
28405050,0irq/26-eth0-rx-23661-21sh09:07:083
28405050,0irq/26-eth0-rx-11539-21munin-node11:29:143
28405050,0irq/26-eth0-rx-0-21swapper/312:04:543
28405050,0irq/26-eth0-rx-0-21swapper/311:49:153
28405050,0irq/26-eth0-rx-0-21swapper/311:19:183
28405050,0irq/26-eth0-rx-0-21swapper/311:10:423
28405050,0irq/26-eth0-rx-0-21swapper/310:59:123
28405050,0irq/26-eth0-rx-0-21swapper/310:44:153
28405050,0irq/26-eth0-rx-0-21swapper/310:39:553
28405050,0irq/26-eth0-rx-0-21swapper/310:19:093
28405050,0irq/26-eth0-rx-0-21swapper/310:03:033
28405050,0irq/26-eth0-rx-0-21swapper/309:33:183
28405050,0irq/26-eth0-rx-0-21swapper/309:24:163
28405050,0irq/26-eth0-rx-0-21swapper/309:24:163
28405050,0irq/26-eth0-rx-0-21swapper/308:04:153
28405050,0irq/26-eth0-rx-0-21swapper/307:19:133
259950,0migration/24390-21pmu-power09:34:212
259950,0migration/22422-21kthreadcore09:14:192
259950,0migration/221837-21kthreadcore06:44:162
259950,0migration/218450-21aten_r1power_po11:54:112
259950,0migration/214750-21fschecks_count07:54:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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