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2024-09-16 - 01:04

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 50 highest latencies:
System rack1slot2s.osadl.org (updated Sun Sep 15, 2024 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2807725857,0sleep00-21swapper/006:53:280
291350530,0irq/25-eth10-21swapper/306:51:203
2803823525,0sleep20-21swapper/206:52:572
2810223127,0sleep10-21swapper/106:53:411
339970,0migration/323831-21sh09:11:043
339960,0migration/38707-21sh09:02:313
339960,0migration/36673-21sh09:43:553
339960,0migration/35158-21sh10:03:003
339960,0migration/331160-21sh09:38:423
339960,0migration/328214-21sh10:40:293
339960,0migration/328214-21sh10:40:293
339960,0migration/323032-21sh12:17:113
28415060,0irq/27-eth0-tx-18509-21ssh10:54:202
28415060,0irq/27-eth0-tx-0-21swapper/211:41:562
28415060,0irq/27-eth0-tx-0-21swapper/209:19:222
28415060,0irq/27-eth0-tx-0-21swapper/209:09:202
28415060,0irq/27-eth0-tx-0-21swapper/008:57:570
283299960,0cyclictest0-21swapper/211:35:512
283219966,0cyclictest26536-21diskmemload11:19:501
283219960,0cyclictest0-21swapper/111:25:211
283179960,0cyclictest0-21swapper/010:25:390
27160,0ktimersoftd/219382-21ssh11:15:412
249960,0watchdog/20-21swapper/211:35:172
249960,0watchdog/20-21swapper/210:37:332
249960,0watchdog/20-21swapper/209:27:172
8225050,0irq/24-0000:00:25523-21latency_hist08:30:262
339950,0migration/37343-21sh09:45:283
339950,0migration/37213-21munin-node10:05:413
339950,0migration/36206-21kthreadcore11:45:453
339950,0migration/331089-21fschecks_time07:45:413
339950,0migration/330567-21latency_hist10:00:263
339950,0migration/330232-21kthreadcore08:55:413
339950,0migration/329599-21aten_r1power_po07:20:383
339950,0migration/327226-21needreboot10:15:453
339950,0migration/326098-21kthreadcore07:15:443
339950,0migration/325779-21if_eth1.208:05:413
339950,0migration/324825-21munin-node08:25:483
339950,0migration/322501-21runrttasks09:30:513
339950,0migration/322195-21kthreadcore10:35:433
339950,0migration/321520-21munin-node07:10:453
339950,0migration/321270-21kthreadcore08:00:433
339950,0migration/320651-21kthreadcore07:35:433
339950,0migration/31978-21taskset11:04:373
339950,0migration/317971-21latency_hist08:00:263
339950,0migration/316526-21taskset07:31:293
339950,0migration/313264-21munin-node10:30:393
339950,0migration/311630-21kthreadcore09:05:423
339950,0migration/311052-21taskset11:10:423
339950,0migration/31060-21fschecks_count12:05:403
28415050,0irq/27-eth0-tx-4722-21munin-node07:50:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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