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2025-09-16 - 18:22

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 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.

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 Tue Sep 16, 2025 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501900,0irq/46-4a10000014636-21kworker/0:207:08:170
14974998552,0cyclictest31525-21ssh10:14:290
14974998450,0cyclictest15166-21ssh11:57:510
14974998359,0cyclictest19688-21sshd07:37:160
14974998161,0cyclictest32648-21ssh11:25:510
14974998049,0cyclictest28779-21ssh12:26:460
14974998042,0cyclictest16174-21ntp_states07:15:060
14974997959,0cyclictest16457-21sh12:00:280
14974997954,0cyclictest30353-21sh12:30:050
14974997953,0cyclictest26886-21ssh12:22:460
14974997951,0cyclictest17043-21runrttasks10:52:430
14974997950,0cyclictest20719-21ssh11:00:300
14974997946,0cyclictest6316-21apt-get10:30:460
14974997856,0cyclictest11987-21ssh09:32:450
14974997850,0cyclictest19149-21ssh12:06:150
14974997845,0cyclictest2980-21ssh11:31:510
14974997842,0cyclictest15703-21munin-run07:14:510
14974997841,0cyclictest24714-21ssh12:18:120
14974997762,0cyclictest9-21ksoftirqd/007:25:240
14974997751,0cyclictest15376-21munin-run09:39:590
14974997747,0cyclictest19275-21ssh10:57:310
14974997740,0cyclictest27064-21ssh10:04:540
14974997656,0cyclictest908-21runrttasks12:36:350
14974997655,0cyclictest21504-21ssh12:11:160
14974997652,0cyclictest9519-21rm11:45:330
14974997645,0cyclictest8106-21ssh09:24:370
14974997643,0cyclictest4635-21ssh09:17:100
14974997642,0cyclictest9054-21munin-run11:45:010
14974997556,0cyclictest9115-21ssh10:35:400
14974997553,0cyclictest16986-21ssh09:43:110
14974997550,0cyclictest32391-21kworker/u2:209:04:530
14974997550,0cyclictest26196-21latency_hist08:19:550
14974997549,0cyclictest5615-21ssh10:28:230
14974997549,0cyclictest30595-21munin-run08:49:530
14974997455,0cyclictest24185-21ssh11:08:020
14974997453,0cyclictest4708-21ssh11:35:300
14974997453,0cyclictest30286-21ssh11:20:540
14974997453,0cyclictest29242-21ssh10:09:350
14974997452,0cyclictest929-21ssh10:18:220
14974997452,0cyclictest2486-21ssh09:12:400
14974997451,0cyclictest12046-21ssh11:51:090
14974997446,0cyclictest22539-21ssh09:55:000
14974997443,0cyclictest13253-21sh10:44:430
14974997441,0cyclictest514-21sshd09:05:190
14974997355,0cyclictest15173-21snmpd08:31:390
14974997351,0cyclictest27378-21apt-get11:15:260
14974997349,0cyclictest23455-21kworker/u2:608:04:530
14974997341,0cyclictest21244-21ssh09:52:180
14974997341,0cyclictest19107-21ssh09:47:430
14974997256,0cyclictest22981-21apt-get07:59:530
14974997254,0cyclictest8557-21ssh09:25:220
14974997249,0cyclictest27304-21sshd08:27:190
14974997240,0cyclictest3704-21ssh10:24:200
14974997153,0cyclictest25715-21ssh11:11:150
14974997149,0cyclictest13953-21ssh10:46:020
14974997143,0cyclictest17619-21idleruntime-cro07:24:490
14974997049,0cyclictest21667-21sshd07:50:160
14974996853,0cyclictest21112-21kworker/u2:108:12:230
14974996850,0cyclictest31986-21runrttasks08:59:270
14974996850,0cyclictest29011-21sshd08:39:190
14974996848,0cyclictest24457-21sshd08:08:170
14974996847,0cyclictest20689-21sshd07:44:170
14974996844,0cyclictest81950irq/47-4a10000008:43:210
14974996746,0cyclictest18709-21sshd07:30:160
14974996649,0cyclictest26902-21munin-run08:24:520
14974996638,0cyclictest21202-21chrt07:47:250
14974996537,0cyclictest30697-21date08:49:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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