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2023-12-05 - 15:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, slot #5

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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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackaslot5s.osadl.org (updated Tue Dec 05, 2023 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780,0rcu_preempt19-21ksoftirqd/111:37:221
81780,0rcu_preempt19-21ksoftirqd/111:37:221
10050740,0irq/346-484840054-21kswapd011:28:300
10050740,0irq/346-484840012209-1kworker/0:2H11:15:060
10050730,0irq/346-484840014785-1kworker/0:3H10:44:110
10050720,0irq/346-484840031753-1kworker/0:2H12:15:050
81710,0rcu_preempt54-21kswapd011:52:110
10050710,0irq/346-48484008952-1kworker/0:2H09:26:180
10050690,0irq/346-484840024155-1kworker/0:1H11:33:280
81680,0rcu_preempt21173-21apt-get12:01:560
10050680,0irq/346-484840013231-1kworker/0:0H11:58:560
1903499662,0cyclictest285082chrt12:10:020
10050660,0irq/346-484840024155-1kworker/0:1H11:39:450
10050660,0irq/346-484840024155-1kworker/0:1H11:39:450
1903499651,0cyclictest5355-21sshd11:07:090
10050650,0irq/346-484840028673-21ls10:57:270
1903499642,0cyclictest17700-21apt-get10:46:550
81630,0rcu_preempt10759-21ls11:12:251
1903499632,0cyclictest6384-21df12:22:040
81620,0rcu_preempt3-21ksoftirqd/008:27:020
81620,0rcu_preempt19385-21munin-node0
1903499625,0cyclictest6579-1kworker/0:1H10:02:230
1903499621,0cyclictest7481-1kworker/0:0H08:12:120
1903499621,0cyclictest25781-21diskmemload09:32:050
1903499619,0cyclictest327272sleep007:47:150
1903499616,0cyclictest31339-21ssh09:50:330
1903499616,0cyclictest0-21swapper/011:47:240
1903499615,0cyclictest0-21swapper/011:22:190
1903499612,0cyclictest0-21swapper/011:21:140
1903499612,0cyclictest0-21swapper/010:37:260
1903499612,0cyclictest0-21swapper/009:58:480
1903499612,0cyclictest0-21swapper/009:53:490
1903499612,0cyclictest0-21swapper/009:16:450
19034996113,0cyclictest18468-21seq12:36:160
19034996113,0cyclictest18468-21seq12:36:160
1903499609,0cyclictest8952-1kworker/0:2H09:26:430
1903499602,0cyclictest0-21swapper/008:32:110
1903499602,0cyclictest0-21swapper/007:52:010
1903499601,0cyclictest0-21swapper/010:52:510
81590,0rcu_preempt3-21ksoftirqd/007:07:340
1903499592,0cyclictest5810-21ssh11:43:180
1903499592,0cyclictest3274-21ssh11:05:150
1903499592,0cyclictest27084-21munin-run07:31:390
1903499592,0cyclictest0-21swapper/009:41:480
1903499592,0cyclictest0-21swapper/008:07:180
1903499591,0cyclictest5769-21runrttasks12:21:370
1903499591,0cyclictest5769-21runrttasks12:21:370
81580,0rcu_preempt3-21ksoftirqd/008:57:030
1903499585,0cyclictest28616-1kworker/0:1H10:27:530
1903499584,0cyclictest31448-21switchtime09:12:220
1903499582,0cyclictest0-21swapper/010:22:220
1903499581,0cyclictest21084-21ssh09:37:470
1903499581,0cyclictest19436-1kworker/0:0H10:33:270
1903499581,0cyclictest19436-1kworker/0:0H10:33:270
1903499573,0cyclictest0-21swapper/009:07:520
1903499572,0cyclictest0-21swapper/010:17:100
1903499572,0cyclictest0-21swapper/007:22:270
1903499571,0cyclictest22183-21ping07:17:030
1903499571,0cyclictest12937-21taskset12:29:200
81560,0rcu_preempt19-21ksoftirqd/108:21:401
81560,0rcu_preempt19-21ksoftirqd/108:21:401
1903499562,0cyclictest28202-21ls07:32:330
1903499562,0cyclictest0-21swapper/010:12:040
1903499562,0cyclictest0-21swapper/008:17:150
1903499562,0cyclictest0-21swapper/007:44:340
1903499561,0cyclictest0-21swapper/010:09:190
1903499551,0cyclictest16300-21sh08:37:010
81540,0rcu_preempt9950irq/345-484840012:10:031
81540,0rcu_preempt21862-21ls08:52:200
1903499546,0cyclictest811-21rngd07:59:460
1903499542,0cyclictest4662-21taskset08:02:000
1903499542,0cyclictest0-21swapper/009:03:500
1903499542,0cyclictest0-21swapper/007:36:580
81530,0rcu_preempt3603-21ping08:22:030
81530,0rcu_preempt3603-21ping08:22:030
81530,0rcu_preempt19-21ksoftirqd/111:47:021
81530,0rcu_preempt19-21ksoftirqd/107:37:111
1903499532,0cyclictest0-21swapper/008:46:390
1903499531,0cyclictest0-21swapper/007:12:270
1903499531,0cyclictest0-21swapper/007:12:270
10050530,0irq/346-4848400671-21ssh12:15:331
10050530,0irq/346-484840017983-21ls07:02:090
81520,0rcu_preempt31861-21kworker/u4:011:42:091
81520,0rcu_preempt19-21ksoftirqd/108:12:331
81520,0rcu_preempt19-21ksoftirqd/107:21:551
10050520,0irq/346-484840014998-21latency_hist09:31:401
81510,0rcu_preempt19-21ksoftirqd/110:26:571
81510,0rcu_preempt19-21ksoftirqd/108:17:281
81510,0rcu_preempt19-21ksoftirqd/108:02:231
81500,0rcu_preempt19-21ksoftirqd/108:07:111
81490,0rcu_preempt19-21ksoftirqd/111:31:591
81490,0rcu_preempt19-21ksoftirqd/110:47:131
81490,0rcu_preempt19-21ksoftirqd/109:57:051
81490,0rcu_preempt19-21ksoftirqd/108:26:571
10050490,0irq/346-484840019438-1kworker/1:3H10:23:061
81480,0rcu_preempt32235-21apt-get11:01:571
81480,0rcu_preempt19-21ksoftirqd/111:52:261
81480,0rcu_preempt19-21ksoftirqd/111:26:571
81480,0rcu_preempt19-21ksoftirqd/109:37:161
81480,0rcu_preempt19125-21ssh11:21:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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