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2025-12-04 - 04:12

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 Thu Dec 04, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818502160,0irq/46-4a10000018379-21kworker/0:319:05:100
218809910574,0cyclictest13745-21ssh23:39:260
218809910474,0cyclictest16061-21ssh21:26:330
218809910471,0cyclictest21050-21ssh22:46:080
218809910372,0cyclictest24753-21ssh00:02:250
218809910370,0cyclictest32147-21ssh23:09:310
218809910369,0cyclictest26797-21ssh21:49:420
218809910268,0cyclictest8671-21ssh21:11:090
218809910181,0cyclictest24486-21ssh21:44:430
218809910170,0cyclictest31699-21ssh00:17:070
218809910168,0cyclictest13288-21ssh21:20:490
218809910069,0cyclictest12207-21ssh21:18:430
218809910068,0cyclictest6874-21ssh23:24:460
218809910068,0cyclictest27981-21ssh21:52:060
218809910068,0cyclictest25909-21ssh22:56:250
218809910068,0cyclictest22340-21ssh23:57:220
218809910067,0cyclictest6541-21ssh22:15:170
218809910067,0cyclictest10330-21ssh23:32:020
21880999978,0cyclictest19790-21ssh21:34:420
21880999978,0cyclictest15244-21ssh22:34:080
21880999977,0cyclictest22284-21ssh21:39:580
21880999969,0cyclictest3678-21ssh00:26:250
21880999967,0cyclictest30490-21ssh21:57:310
21880999967,0cyclictest28618-21ssh23:01:590
21880999966,0cyclictest3294-21ssh22:08:460
21880999876,0cyclictest15840-21gpg-connect-age22:35:060
21880999875,0cyclictest3638-21ssh23:17:500
21880999868,0cyclictest17505-21ssh23:47:050
21880999868,0cyclictest12703-21ssh22:28:430
21880999780,0cyclictest6019-21ssh22:14:400
21880999777,0cyclictest25055-21ssh22:54:460
21880999767,0cyclictest28723-21ssh00:10:450
21880999767,0cyclictest2480-21ssh00:23:590
21880999767,0cyclictest10050-21munin-run00:40:030
21880999766,0cyclictest19260-21ssh23:50:460
21880999766,0cyclictest14410-21ssh23:40:170
21880999761,0cyclictest28254-21sh00:09:580
21880999675,0cyclictest7157-21ssh00:33:530
21880999674,0cyclictest32520-21ssh23:10:050
21880999578,0cyclictest32567-21ssh22:01:530
21880999575,0cyclictest10502-21ssh22:24:030
21880999574,0cyclictest20369-21ssh22:44:510
21880999478,0cyclictest7806-21ssh23:26:370
21880999475,0cyclictest7375-21sshd21:05:310
21880999472,0cyclictest26190-21seq19:34:160
21880999376,0cyclictest500-21/usr/sbin/munin20:19:540
21880999372,0cyclictest22602-21apt-get19:15:260
21880999274,0cyclictest5703-21munin-run20:54:540
21880999176,0cyclictest2746-21modprobe20:34:530
21880999173,0cyclictest30448-21sshd20:02:390
21880999172,0cyclictest6245-21sshd20:58:310
21880999171,0cyclictest27053-21sendmail-msp19:39:530
21880999171,0cyclictest24803-21munin-run19:24:510
21880999171,0cyclictest22602-21apt-get19:14:510
21880999170,0cyclictest29299-21latency_hist19:54:530
21880998972,0cyclictest7181-21modprobe21:04:530
21880998972,0cyclictest31475-21/usr/sbin/munin20:09:530
21880998970,0cyclictest30011-21grep19:59:520
21880998970,0cyclictest25451-21sshd19:29:210
21880998872,0cyclictest4796-21seq20:48:390
21880998870,0cyclictest15201-21runrttasks19:47:480
21880998870,0cyclictest1046-21chrt20:23:150
21880998867,0cyclictest3898-21chrt20:42:190
21880998867,0cyclictest1992-21chrt20:29:530
21880998862,0cyclictest3052-21runrttasks20:36:360
21880998769,0cyclictest31769-21sshd20:11:300
21880998765,0cyclictest27301-21seq19:41:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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