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2021-08-01 - 20:10

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 
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ARMv7 Processor rev 2 (v7l), Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #9, slot #8
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
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 alll highest latencies:
System rack9slot8s.osadl.org (updated Sun Aug 01, 2021 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501920,0irq/46-4a1000008426-21kworker/0:307:05:260
225339912549,0cyclictest81850irq/46-4a10000010:15:330
22533999433,0cyclictest0-21swapper09:30:410
81850810,0irq/46-4a10000011268-21latency10:56:080
81850780,0irq/46-4a10000022164-21ssh10:11:140
81850780,0irq/46-4a10000020140-21runrttasks11:14:400
81850760,0irq/46-4a10000017964-21mailstats12:16:160
81850760,0irq/46-4a10000012183-21kworker/u2:111:22:370
81950740,0irq/47-4a100000560-21kswapd012:26:580
81850740,0irq/46-4a100000516-21apt09:25:180
81850740,0irq/46-4a1000004128-21ps10:41:090
81850740,0irq/46-4a10000026228-21ssh12:33:420
81850740,0irq/46-4a1000002006-21ssh11:43:500
81850730,0irq/46-4a1000005681-21modprobe11:51:130
81850730,0irq/46-4a10000026335-21rm09:11:070
81850730,0irq/46-4a10000018898-21ntp_states08:45:430
81850730,0irq/46-4a10000015649-21head12:11:190
81850730,0irq/46-4a10000014793-21unixbench_singl08:30:540
81950720,0irq/47-4a10000029272-21cat10:26:020
81950720,0irq/47-4a1000002453-21apt-get11:47:010
81850720,0irq/46-4a1000009527-21rm10:51:460
81850720,0irq/46-4a1000003199-1kworker/u3:008:10:200
81850720,0irq/46-4a10000028745-21ssh11:31:220
81850720,0irq/46-4a10000027948-21ssh10:23:110
81850720,0irq/46-4a10000026922-21kworker/u2:807:25:270
81850720,0irq/46-4a1000002645-21ntp_states07:50:450
81850720,0irq/46-4a10000014976-21kworker/u2:308:35:290
35050720,0irq/20-490000007805-21ssh11:55:420
81950710,0irq/47-4a1000008235-21apt10:50:010
81850710,0irq/46-4a1000006431-21apt-get08:05:390
81850710,0irq/46-4a1000004238-21kworker/u2:309:35:430
81850710,0irq/46-4a10000029391-21chrt09:16:540
81850710,0irq/46-4a10000028533-21kworker/u2:1107:30:160
81850710,0irq/46-4a10000025456-21kworker/u2:007:20:050
81850710,0irq/46-4a10000013375-21ssh12:07:030
81850710,0irq/46-4a10000011543-21meminfo08:21:060
81850710,0irq/46-4a10000010837-21sshd08:19:540
81850700,0irq/46-4a10000030717-21awk11:36:050
81850700,0irq/46-4a10000028625-21ssh12:38:230
81850700,0irq/46-4a10000025148-21kworker/u2:509:45:410
81850700,0irq/46-4a10000023030-21ntp_states07:10:450
81850700,0irq/46-4a10000018596-21kworker/u2:412:20:080
81850700,0irq/46-4a10000015341-21ssh11:04:570
81850700,0irq/46-4a10000012328-21kworker/u2:1009:55:350
81850690,0irq/46-4a10000030790-21ssh09:20:350
81850690,0irq/46-4a10000030643-21kworker/u2:810:30:220
81850690,0irq/46-4a10000025540-21diskmemload09:52:270
81850680,0irq/46-4a10000032741-21kworker/u2:007:45:210
81850670,0irq/46-4a1000009-21ksoftirqd/011:05:190
81850670,0irq/46-4a10000020445-21kworker/u2:610:39:180
81850670,0irq/46-4a10000020445-21kworker/u2:610:07:570
81850670,0irq/46-4a10000013634-21sshd08:27:530
81850670,0irq/46-4a10000011245-21kworker/u2:012:04:350
81850670,0irq/46-4a1000000-21swapper11:18:330
81850660,0irq/46-4a1000000-21swapper11:26:320
22533996653,0cyclictest81850irq/46-4a10000009:45:080
81950640,0irq/47-4a10000014973-21kworker/u2:008:40:410
81850640,0irq/46-4a1000003202-1kworker/u3:307:55:580
81850640,0irq/46-4a10000015588-1kworker/u3:110:01:250
81850620,0irq/46-4a10000018047-1kworker/u3:408:50:440
81850600,0irq/46-4a1000009-21ksoftirqd/009:02:540
81850600,0irq/46-4a1000000-21swapper07:40:520
22533995947,0cyclictest81850irq/46-4a10000008:55:350
22533995744,0cyclictest81850irq/46-4a10000007:35:230
22533995744,0cyclictest81850irq/46-4a10000007:20:530
22533995545,0cyclictest101ktimersoftd/008:00:200
22533995241,0cyclictest81850irq/46-4a10000009:05:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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