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2023-12-09 - 00:37

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 100 highest latencies:
System rack9slot8s.osadl.org (updated Fri Dec 08, 2023 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501710,0irq/46-4a1000009241-21seq07:09:220
81950880,0irq/47-4a10000022865-21ssh11:37:500
81950870,0irq/47-4a1000009439-21ssh11:08:270
81850870,0irq/46-4a1000005811-21kworker/u2:212:21:270
81850850,0irq/46-4a100000339-21ssh09:21:380
81850850,0irq/46-4a10000022214-21runrttasks08:30:360
81850850,0irq/46-4a10000017553-21kworker/u2:512:38:110
81950840,0irq/47-4a1000001889-21ssh10:50:170
81950840,0irq/47-4a10000015055-21ssh12:31:430
71582848,0sleep03498-21kworker/u2:112:14:370
81950830,0irq/47-4a10000031534-21ssh11:56:470
81950830,0irq/47-4a10000010131-21kworker/u2:511:11:440
81950820,0irq/47-4a1000008785-21kworker/u2:111:16:000
81950820,0irq/47-4a1000008076-21ssh12:16:280
81950820,0irq/47-4a10000015111-21ssh11:20:410
81850820,0irq/46-4a10000017698-21kworker/u2:011:43:430
300502827,0sleep030051-21ssh09:14:340
81950810,0irq/47-4a10000028353-21diskmemload09:55:050
81950810,0irq/47-4a10000019174-21ssh10:11:370
81950810,0irq/47-4a10000017357-21kworker/u2:110:29:010
81850810,0irq/46-4a10000024405-21apt-get10:25:060
81850810,0irq/46-4a1000001734-21runrttasks09:25:090
81950800,0irq/47-4a1000004988-21ssh09:34:420
81950800,0irq/47-4a1000004399-21ssh10:56:390
81950800,0irq/47-4a1000002284-21lldpd08:26:160
81950800,0irq/47-4a10000020681-21runrttasks08:21:370
81950800,0irq/47-4a10000017698-21kworker/u2:012:01:360
81850800,0irq/46-4a10000019821-21runrttasks11:31:050
81850800,0irq/46-4a10000017393-21munin-run08:00:030
81950790,0irq/47-4a1000009380-21ssh09:45:440
81950790,0irq/47-4a1000007289-21ssh09:40:130
81950790,0irq/47-4a1000003498-21kworker/u2:112:07:520
81950790,0irq/47-4a10000028985-21ssh10:36:350
81950790,0irq/47-4a10000026229-21apt-get10:30:240
81950790,0irq/47-4a10000022360-21kworker/u2:111:51:560
81950790,0irq/47-4a10000018768-21ssh11:28:540
81950790,0irq/47-4a10000013042-21rm09:55:050
81850790,0irq/46-4a1000006738-21kworker/u2:007:15:160
272252790,0sleep017698-21kworker/u2:011:47:220
81950780,0irq/47-4a1000006675-21ssh11:02:000
81950780,0irq/47-4a10000030783-21ssh09:16:160
81950780,0irq/47-4a10000028353-21diskmemload09:10:050
81950780,0irq/47-4a10000024070-21sshd08:43:330
81950780,0irq/47-4a10000022125-21ssh10:19:220
81950780,0irq/47-4a10000015848-21seq07:49:360
81950780,0irq/47-4a10000012859-21ssh12:26:540
81950780,0irq/47-4a10000011559-21runrttasks07:21:230
81850780,0irq/46-4a10000032750-21kworker/u2:509:35:260
81850780,0irq/46-4a10000017492-21ssh10:07:150
81850780,0irq/46-4a10000011558-21kworker/u2:010:45:520
81950770,0irq/47-4a10000011558-21kworker/u2:010:45:020
81850770,0irq/46-4a10000011558-21kworker/u2:010:02:220
142422770,0chrt14038-21kworker/u2:107:38:410
81950760,0irq/47-4a10000024752-21sshd08:46:330
200362760,0chrt17712-21kworker/u2:608:17:340
81950750,0irq/47-4a10000018880-21munin-run08:10:010
81950750,0irq/47-4a10000018458-21kworker/u2:008:15:030
81950750,0irq/47-4a10000013290-21kworker/u2:007:35:020
81950750,0irq/47-4a10000011600-21kworker/u2:007:25:050
81850750,0irq/46-4a1000009783-21runrttasks07:12:330
232412750,0chrt23049-21kworker/u2:108:38:000
161252750,0chrt15434-21kworker/u2:007:50:540
145802750,0sleep013290-21kworker/u2:007:40:150
81950740,0irq/47-4a10000027295-21sshd09:02:320
81950740,0irq/47-4a10000023508-21kworker/u2:609:00:010
81950720,0irq/47-4a10000025516-21kworker/u2:208:55:040
180722720,0sleep016183-21kworker/u2:208:04:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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