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2024-11-22 - 05:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #2

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 here to display the system's profile data or here to proceed to next system.
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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 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 50 highest latencies:
System rack1slot2s.osadl.org (updated Fri Nov 22, 2024 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1471425756,0sleep20-21swapper/218:48:162
291350480,0irq/25-eth10-21swapper/318:50:243
1566523726,0sleep00-21swapper/018:51:070
1568723026,0sleep10-21swapper/118:51:201
339970,0migration/318490-21munin-node23:18:093
339970,0migration/318490-21munin-node23:18:093
249970,0watchdog/20-21swapper/221:28:452
339960,0migration/38732-21sh00:17:533
28415060,0irq/27-eth0-tx-0-21swapper/223:32:542
28415060,0irq/27-eth0-tx-0-21swapper/222:04:382
28415060,0irq/27-eth0-tx-0-21swapper/221:03:592
28415060,0irq/27-eth0-tx-0-21swapper/019:23:150
28415060,0irq/27-eth0-tx-0-21swapper/019:18:380
28405060,0irq/26-eth0-rx-633-21kthreadcore21:03:163
28405060,0irq/26-eth0-rx-2299-21seq23:52:463
249960,0watchdog/20-21swapper/221:18:372
149960,0migration/018068-21sh23:17:440
339950,0migration/39828-21idleruntime00:18:123
339950,0migration/38428-21idleruntime20:48:133
339950,0migration/37361-21kthreadcore23:33:123
339950,0migration/33540-21hwlatdetect23:53:183
339950,0migration/331052-21fschecks_time19:28:123
339950,0migration/330983-21kthreadcore23:03:163
339950,0migration/329629-21munin-node19:03:103
339950,0migration/329184-21kthreadcore19:48:153
339950,0migration/328849-21kthreadcore20:38:123
339950,0migration/328815-21sh20:59:343
339950,0migration/328805-21idleruntime22:43:113
339950,0migration/326709-21irqcore20:13:143
339950,0migration/326404-21munin-node22:18:163
339950,0migration/323935-21irqrtprio18:58:153
339950,0migration/323765-21munin-node19:43:223
339950,0migration/323378-21taskset19:21:453
339950,0migration/322326-21aten_r1power_po21:18:073
339950,0migration/321767-21latency_hist21:37:583
339950,0migration/320435-21kthreadcore20:08:133
339950,0migration/320009-21munin-node23:43:103
339950,0migration/315457-21kthreadcore20:28:143
339950,0migration/314493-21kthreadcore19:38:143
339950,0migration/312083-21munin-node23:38:113
339950,0migration/310891-21kthreadcore20:23:153
28415050,0irq/27-eth0-tx-6685-21munin-node20:23:150
28415050,0irq/27-eth0-tx-20867-21ssh21:56:492
28415050,0irq/27-eth0-tx-0-21swapper/222:33:022
28415050,0irq/27-eth0-tx-0-21swapper/221:58:112
28415050,0irq/27-eth0-tx-0-21swapper/220:58:202
28415050,0irq/27-eth0-tx-0-21swapper/200:09:112
28415050,0irq/27-eth0-tx-0-21swapper/019:41:370
28415050,0irq/27-eth0-tx-0-21swapper/019:30:120
28415050,0irq/27-eth0-tx-0-21swapper/019:17:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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