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2024-04-25 - 21:25

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 highest latencies:
System rack9slot8s.osadl.org (updated Thu Apr 25, 2024 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501680,0irq/47-4a10000032563-21runrttasks07:08:030
3939911190,0cyclictest4987-21ssh11:05:590
3939910685,0cyclictest32599-21ssh10:54:200
3939910683,0cyclictest11326-21ssh10:05:260
3939910581,0cyclictest10803-21ssh12:31:410
3939910566,0cyclictest3478-21ssh12:14:580
3939910483,0cyclictest20222-21ssh11:39:240
3939910479,0cyclictest6851-21snmpd10:40:290
3939910472,0cyclictest3935-21ssh09:48:040
3939910467,0cyclictest26008-21rm10:39:080
3939910466,0cyclictest29946-21ssh12:01:110
3939910381,0cyclictest7107-21ssh12:23:130
3939910372,0cyclictest29243-21ssh09:31:320
3939910271,0cyclictest19162-21ssh10:23:500
3939910182,0cyclictest31896-21ssh12:05:370
3939910162,0cyclictest7741-21ssh11:12:000
3939910081,0cyclictest15245-21apt-get10:15:560
3939910080,0cyclictest31454-21ssh09:36:290
3939910080,0cyclictest12647-21ssh12:35:590
3939910079,0cyclictest4033-21awk07:30:010
3939910070,0cyclictest1298-21ssh10:56:470
393999981,0cyclictest28923-21ssh10:45:370
393999978,0cyclictest5185-21ssh12:18:530
393999977,0cyclictest24004-21sshd11:47:470
393999977,0cyclictest15210-21ssh11:28:060
393999975,0cyclictest1441-21ssh09:42:050
393999969,0cyclictest14232-21kworker/u2:008:40:320
393999879,0cyclictest9841-21ssh11:16:310
393999879,0cyclictest24474-21ssh09:20:500
393999878,0cyclictest9653-21ssh12:29:080
393999876,0cyclictest27144-21ssh11:54:590
393999876,0cyclictest19958-21ssh10:25:300
393999866,0cyclictest22287-21ssh11:44:000
393999780,0cyclictest27633-21ssh09:27:570
393999778,0cyclictest13923-21apt08:35:020
393999777,0cyclictest23980-21ssh09:19:580
393999775,0cyclictest10858-21ssh10:04:320
393999774,0cyclictest13586-21ssh10:10:510
393999773,0cyclictest6747-21ssh09:54:420
393999771,0cyclictest21669-21ssh09:14:480
393999768,0cyclictest3595-21rm11:02:520
393999766,0cyclictest12951-21ssh11:23:150
393999678,0cyclictest28159-21ssh11:57:100
393999674,0cyclictest17022-21sshd11:31:590
393999578,0cyclictest22297-21sh10:30:300
393999576,0cyclictest492-21latency_hist07:10:060
393999575,0cyclictest7777-21ssh09:57:010
393999572,0cyclictest1547-21sshd07:15:090
393999564,0cyclictest9045-21kworker/u2:308:05:010
393999377,0cyclictest7022-21chrt07:50:020
393999276,0cyclictest14667-21apt-get08:40:030
393999275,0cyclictest17851-21ls09:00:020
393999271,0cyclictest1546-21munin-node09:05:330
393999175,0cyclictest11874-21sshd08:20:310
393999174,0cyclictest13182-21apt08:30:010
393999173,0cyclictest5837-21chrt07:41:360
393999171,0cyclictest7378-21runrttasks07:50:330
393999163,0cyclictest10239-21runrttasks08:10:030
393999074,0cyclictest4761-21cron07:35:010
393999074,0cyclictest10933-21munin-run08:15:020
393999071,0cyclictest8057-21latency_hist07:55:030
393999068,0cyclictest18608-21apt-get09:05:020
393998972,0cyclictest3292-21apt07:25:020
393998972,0cyclictest11758-21latency_hist08:20:040
393998971,0cyclictest16196-21sshd08:48:480
393998870,0cyclictest16450-21latency_hist08:50:040
393998869,0cyclictest5240-21runrttasks07:38:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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