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2025-08-30 - 00:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #7

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.

Note that this system runs a non-RT kernel.
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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackbslot7s.osadl.org (updated Fri Aug 29, 2025 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13199241996,4108sleep110209-21kworker/1:211:44:341
31903288032,751sleep132054-21apt-config07:38:381
31898263322,599sleep131942-21ntpq09:19:031
2071525028,457sleep120761-21ntpq08:44:031
303624500,48sleep122059-21cyclictest07:48:591
10341241323,356sleep1362-21snmpd11:38:001
2152224117,367sleep1195-21jbd2/mmcblk2p2-12:13:211
29300239826,356sleep117255-21kworker/u8:307:29:011
23629237039,241sleep123733-21cpu07:13:391
27483235713,205sleep127625-21unixbench_multi09:04:091
24104234354,242sleep124247-21unixbench_multi08:54:081
29189229156,144sleep129251-21fschecks_time10:53:551
17446226310,87sleep10-21swapper/111:59:521
10507222737,92sleep10-21swapper/109:54:081
25401222542,100sleep125414-21fschecks_count08:59:451
22668222025,138sleep121833-21/usr/sbin/munin08:49:151
2472122158,146sleep124739-21grep10:38:571
12016220911,181sleep10-21swapper/111:43:371
23577220718,171sleep023628-21sed07:13:380
28905220147,96sleep10-21swapper/109:09:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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