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2024-04-18 - 19:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #8

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 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.

Total number of samples: 50 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 rack9slot8s.osadl.org (updated Thu Apr 18, 2024 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501750,0irq/47-4a1000006851-21snmpd07:09:300
81950910,0irq/47-4a10000024880-21ssh12:30:180
81950910,0irq/47-4a10000024626-21kworker/u2:211:16:090
81950910,0irq/47-4a10000020270-21ssh09:40:020
81950900,0irq/47-4a10000022609-21ssh11:06:510
81950890,0irq/47-4a1000008493-21kworker/u2:310:34:020
81950890,0irq/47-4a10000014850-21ssh09:25:070
81950880,0irq/47-4a1000009908-21kworker/u2:109:33:510
81950880,0irq/47-4a1000008349-21ssh11:50:460
81950880,0irq/47-4a10000029773-21ssh11:24:520
81950880,0irq/47-4a10000023601-21sshd07:13:420
81950880,0irq/47-4a10000022571-21ssh12:25:050
81850880,0irq/46-4a10000013864-21sh10:45:180
81950870,0irq/47-4a1000003956-21latency_hist08:35:030
81950870,0irq/47-4a10000029524-21seq07:49:180
81950870,0irq/47-4a10000026554-21kworker/u2:610:05:510
81950870,0irq/47-4a1000002605-21ssh11:37:370
81950870,0irq/47-4a10000024626-21kworker/u2:211:14:040
81950870,0irq/47-4a10000022325-21ssh09:45:140
81950870,0irq/47-4a10000014390-21ssh09:24:110
81950870,0irq/47-4a10000014302-21kworker/u2:210:54:310
81950870,0irq/47-4a10000012786-21kworker/u2:712:01:400
81950860,0irq/47-4a1000009355-21diskmemload09:12:250
81950860,0irq/47-4a10000032024-21kworker/u2:110:21:380
81950860,0irq/47-4a10000029852-21runrttasks07:50:560
81950860,0irq/47-4a10000027203-21ssh12:35:500
81950860,0irq/47-4a10000026340-21ssh09:55:420
81950860,0irq/47-4a10000026155-21runrttasks07:27:400
81950860,0irq/47-4a10000024668-21ssh09:51:270
81950860,0irq/47-4a10000019298-21ssh12:17:180
81950860,0irq/47-4a10000016832-21kworker/u2:212:11:280
81950850,0irq/47-4a1000006383-21latency_hist08:50:030
81950850,0irq/47-4a10000027688-21kworker/u2:411:40:420
81950850,0irq/47-4a1000002304-21kworker/u2:210:38:300
81950850,0irq/47-4a1000002229-21ssh10:16:330
81950850,0irq/47-4a10000021346-21rm09:42:490
81950850,0irq/47-4a10000018443-21kworker/u2:111:46:400
81950850,0irq/47-4a10000018443-21kworker/u2:111:26:090
81950850,0irq/47-4a10000012786-21kworker/u2:712:25:090
81950850,0irq/47-4a1000001149-21ssh10:14:010
81950850,0irq/47-4a10000011398-21ssh11:58:030
117662859,0sleep011775-21ssh10:40:110
81950840,0irq/47-4a1000008052-21runrttasks09:00:350
81950840,0irq/47-4a1000007847-21cron09:00:020
81950840,0irq/47-4a1000006369-21kworker/u2:010:56:330
81950840,0irq/47-4a10000029314-21rm10:03:070
81950840,0irq/47-4a10000020932-21ssh11:02:450
81950840,0irq/47-4a10000014193-21ssh12:05:100
81950840,0irq/47-4a10000012887-21apt09:20:010
81950840,0irq/47-4a1000001036-21ssh11:34:000
81950830,0irq/47-4a10000032024-21kworker/u2:110:25:190
81950830,0irq/47-4a10000031875-21idleruntime-cro08:05:020
81950830,0irq/47-4a10000027544-21kworker/u2:507:40:010
81950830,0irq/47-4a10000026690-21seq07:31:030
81950820,0irq/47-4a10000028701-21apt-get07:45:040
81950820,0irq/47-4a10000025315-21runrttasks07:21:520
81950810,0irq/47-4a1000006851-21snmpd08:39:380
81950810,0irq/47-4a1000003445-21kworker/u2:008:40:090
81950800,0irq/47-4a10000024494-21kworker/u2:707:20:030
81850800,0irq/46-4a1000009366-21idleruntime-cro09:10:020
81950790,0irq/47-4a10000029895-21kworker/u2:308:00:020
81950790,0irq/47-4a1000002634-21sshd08:25:420
81950780,0irq/47-4a1000007047-21sshd08:54:420
321412780,0sleep028695-21kworker/u2:108:06:190
24032780,0chrt28695-21kworker/u2:108:24:470
11092780,0chrt481-21kworker/u2:408:15:440
81850720,0irq/46-4a1000006851-21snmpd08:14:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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