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2024-11-24 - 07:41

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 100 highest latencies:
System rack1slot2s.osadl.org (updated Sun Nov 24, 2024 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1169727978,0sleep20-21swapper/218:50:172
291350530,0irq/25-eth10-21swapper/318:49:123
1158723523,0sleep00-21swapper/018:48:580
1154222622,0sleep10-21swapper/118:48:271
119969988,0cyclictest6445-21snmpd20:01:281
28415070,0irq/27-eth0-tx-0-21swapper/200:04:472
119959976,0cyclictest0-21swapper/020:03:110
8225060,0irq/24-0000:00:6239-21latency_hist19:12:542
339960,0migration/39680-21irqcore22:53:113
339960,0migration/331842-21sh22:24:013
339960,0migration/321820-21munin-node22:58:113
339960,0migration/320949-21sh00:20:033
339960,0migration/317432-21sh21:36:093
28415060,0irq/27-eth0-tx-690-21ssh21:45:232
28415060,0irq/27-eth0-tx-29256-21munin-node23:43:162
28415060,0irq/27-eth0-tx-0-21swapper/223:55:012
28415060,0irq/27-eth0-tx-0-21swapper/223:51:412
28415060,0irq/27-eth0-tx-0-21swapper/223:40:062
28415060,0irq/27-eth0-tx-0-21swapper/223:33:532
28415060,0irq/27-eth0-tx-0-21swapper/223:24:502
28415060,0irq/27-eth0-tx-0-21swapper/223:18:002
28415060,0irq/27-eth0-tx-0-21swapper/223:15:442
28415060,0irq/27-eth0-tx-0-21swapper/222:42:462
28415060,0irq/27-eth0-tx-0-21swapper/222:29:502
28415060,0irq/27-eth0-tx-0-21swapper/222:24:102
28415060,0irq/27-eth0-tx-0-21swapper/222:22:142
28415060,0irq/27-eth0-tx-0-21swapper/222:17:432
28415060,0irq/27-eth0-tx-0-21swapper/222:06:142
28415060,0irq/27-eth0-tx-0-21swapper/221:55:472
28415060,0irq/27-eth0-tx-0-21swapper/221:38:052
28415060,0irq/27-eth0-tx-0-21swapper/221:33:172
28415060,0irq/27-eth0-tx-0-21swapper/221:28:112
28415060,0irq/27-eth0-tx-0-21swapper/221:27:022
28415060,0irq/27-eth0-tx-0-21swapper/221:20:142
28415060,0irq/27-eth0-tx-0-21swapper/221:03:552
28415060,0irq/27-eth0-tx-0-21swapper/220:57:592
28415060,0irq/27-eth0-tx-0-21swapper/200:20:172
28415060,0irq/27-eth0-tx-0-21swapper/200:10:492
28415060,0irq/27-eth0-tx-0-21swapper/019:45:140
28405060,0irq/26-eth0-rx-6310-21sh23:51:173
28405060,0irq/26-eth0-rx-24056-21ssh22:41:083
28405060,0irq/26-eth0-rx-10484-21perl21:53:093
27160,0ktimersoftd/20-21swapper/220:07:542
249960,0watchdog/20-21swapper/221:13:082
339950,0migration/39463-21irqcore20:03:093
339950,0migration/38743-21kthreadcore23:53:133
339950,0migration/36232-21sh23:08:333
339950,0migration/36038-21taskset19:10:483
339950,0migration/33946-21kthreadcore22:08:113
339950,0migration/331285-21missed_timers22:03:133
339950,0migration/33019-21gltestperf21:28:093
339950,0migration/329985-21fschecks_time20:43:083
339950,0migration/327830-21kthreadcore19:28:103
339950,0migration/327391-21irqcore21:03:093
339950,0migration/325030-21fschecks_time23:03:083
339950,0migration/324339-21irqrtprio00:03:113
339950,0migration/31987-21taskset20:18:203
339950,0migration/316497-21fschecks_count23:18:073
339950,0migration/316009-21munin-node20:53:143
339950,0migration/315386-21sh22:33:553
339950,0migration/314901-21kthreadcore21:13:143
339950,0migration/313549-21taskset19:39:023
339950,0migration/313536-21munin-node19:18:073
339950,0migration/31179-21ksmtuned19:54:473
339950,0migration/311105-21kthreadcore00:13:163
339950,0migration/310286-21munin-node20:28:103
339950,0migration/310050-21kthreadcore19:13:113
28415050,0irq/27-eth0-tx-29343-21munin-node20:43:070
28415050,0irq/27-eth0-tx-2029-21telnet21:48:062
28415050,0irq/27-eth0-tx-19793-21munin-node19:23:060
28415050,0irq/27-eth0-tx-0-21swapper/223:58:272
28415050,0irq/27-eth0-tx-0-21swapper/223:10:522
28415050,0irq/27-eth0-tx-0-21swapper/222:58:032
28415050,0irq/27-eth0-tx-0-21swapper/222:48:472
28415050,0irq/27-eth0-tx-0-21swapper/222:46:312
28415050,0irq/27-eth0-tx-0-21swapper/020:53:200
28405050,0irq/26-eth0-rx-31069-21vmstat22:43:173
28405050,0irq/26-eth0-rx-30525-21grep21:23:103
28405050,0irq/26-eth0-rx-24816-21grep19:23:103
28405050,0irq/26-eth0-rx-20778-21grep21:58:113
28405050,0irq/26-eth0-rx-1929-21telnet21:48:053
28405050,0irq/26-eth0-rx-11162-21kthreadcore23:13:153
28405050,0irq/26-eth0-rx-1017-21ssh21:46:123
28405050,0irq/26-eth0-rx-0-21swapper/323:28:083
28405050,0irq/26-eth0-rx-0-21swapper/322:16:223
28405050,0irq/26-eth0-rx-0-21swapper/321:38:063
28405050,0irq/26-eth0-rx-0-21swapper/321:18:043
28405050,0irq/26-eth0-rx-0-21swapper/321:08:203
28405050,0irq/26-eth0-rx-0-21swapper/320:13:103
28405050,0irq/26-eth0-rx-0-21swapper/320:13:103
28405050,0irq/26-eth0-rx-0-21swapper/300:02:513
259950,0migration/215045-21kthreadcore19:18:112
259950,0migration/212870-21kthreadcore20:28:122
259950,0migration/210231-21irqcore22:33:132
249950,0watchdog/228633-21kthreadcore23:03:122
249950,0watchdog/20-21swapper/223:32:122
249950,0watchdog/20-21swapper/222:53:362
249950,0watchdog/20-21swapper/222:08:442
249950,0watchdog/20-21swapper/221:59:242
249950,0watchdog/20-21swapper/221:10:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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