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2024-06-13 - 04:12

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 Wed Jun 12, 2024 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501850,0irq/47-4a10000032379-21runrttasks07:06:180
81950860,0irq/47-4a1000002912-21ssh09:53:490
102332859,0sleep010238-21ssh11:46:240
81950810,0irq/47-4a10000023024-21ssh09:19:580
81950790,0irq/47-4a1000007945-21ssh10:07:300
81950790,0irq/47-4a10000011969-21ssh11:51:180
81950780,0irq/47-4a1000007731-1kworker/u3:210:30:030
81950780,0irq/47-4a1000003661-21ssh09:55:350
81950780,0irq/47-4a10000030671-21kworker/u2:211:11:400
81950780,0irq/47-4a10000027780-21ssh09:33:280
81850780,0irq/46-4a10000016500-21kworker/u2:010:45:020
81950770,0irq/47-4a10000032527-21ssh09:45:580
81950770,0irq/47-4a10000011956-21kworker/u2:112:25:010
81950760,0irq/47-4a10000030808-21ssh09:41:210
81950760,0irq/47-4a10000023793-21kworker/u2:309:22:390
81950760,0irq/47-4a10000021779-21kworker/u2:110:16:420
81950760,0irq/47-4a10000016845-21ssh12:06:240
81950750,0irq/47-4a1000007643-21ssh11:39:260
81950750,0irq/47-4a10000021896-21kworker/u2:410:49:580
81950750,0irq/47-4a10000021091-21ssh12:19:110
81950750,0irq/47-4a1000002054-21cron12:33:000
81850750,0irq/46-4a1000009-21ksoftirqd/010:33:480
81850750,0irq/46-4a100000303-21ssh11:17:260
81950740,0irq/47-4a1000009616-21kworker/u2:410:13:530
81950740,0irq/47-4a10000015333-21kworker/u2:612:04:170
81950740,0irq/47-4a10000013711-21kworker/u2:211:58:000
81850740,0irq/46-4a10000025620-1kworker/u3:311:06:100
81850740,0irq/46-4a10000016472-1kworker/u3:308:50:390
81950730,0irq/47-4a1000003771-21ssh11:28:000
81950730,0irq/47-4a10000025357-21kworker/u2:212:35:570
81950730,0irq/47-4a1000002117-21sendmail-mta07:32:560
81950730,0irq/47-4a10000011599-21cron08:20:000
81850730,0irq/46-4a1000008684-1kworker/u3:211:44:090
81850730,0irq/46-4a10000025393-1kworker/u3:209:36:190
81850730,0irq/46-4a1000000-21swapper10:01:500
101730,0ktimersoftd/025698-21ssh09:27:450
81950720,0irq/47-4a10000023793-21kworker/u2:010:51:560
81950720,0irq/47-4a10000018815-21kworker/u2:109:10:250
81850720,0irq/46-4a1000009-21ksoftirqd/010:38:080
81850720,0irq/46-4a1000000-21swapper11:01:320
101720,0ktimersoftd/05480-21ssh11:33:000
101720,0ktimersoftd/018237-21ssh12:10:300
101720,0ktimersoftd/014281-21sshd08:37:390
101710,0ktimersoftd/023990-21ssh12:27:390
101710,0ktimersoftd/01789-21runrttasks11:21:500
81950700,0irq/47-4a10000026547-21ssh10:59:470
81850700,0irq/46-4a1000009-21ksoftirqd/007:40:420
81850700,0irq/46-4a1000003968-21kworker/u2:010:20:420
81850690,0irq/46-4a1000008157-1kworker/u3:008:00:010
101690,0ktimersoftd/07151-21latency_hist07:50:030
101690,0ktimersoftd/010567-21chrt08:12:540
81850680,0irq/46-4a1000000-21swapper08:05:390
81950670,0irq/47-4a1000007403-21kworker/u2:208:01:540
101670,0ktimersoftd/017460-21sshd08:57:390
81850660,0irq/46-4a10000016104-21apt-get08:50:030
101660,0ktimersoftd/06851-21snmpd09:05:590
101660,0ktimersoftd/018454-21sshd09:04:290
101660,0ktimersoftd/015411-21latency_hist08:45:040
101650,0ktimersoftd/07521-21sshd07:52:390
101650,0ktimersoftd/012493-21chrt08:25:060
101640,0ktimersoftd/03554-21sshd07:27:390
81850630,0irq/46-4a10000031667-1kworker/u3:407:11:430
101630,0ktimersoftd/02280-21runrttasks07:35:320
101630,0ktimersoftd/01582-21munin-node07:15:140
81950590,0irq/47-4a1000002054-21cron07:21:010
101580,0ktimersoftd/02280-21runrttasks08:32:300
101580,0ktimersoftd/02280-21runrttasks08:24:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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