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2025-11-08 - 03:23

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 50 highest latencies:
System rack9slot8s.osadl.org (updated Sat Nov 08, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501770,0irq/46-4a1000005532-21seq19:08:440
57189912032,0cyclictest13227-21ssh23:00:350
57189911613,0cyclictest11714-21apt-get19:44:530
57189911547,0cyclictest81850irq/46-4a10000000:35:030
57189911429,0cyclictest25039-21ssh23:25:380
57189911335,0cyclictest20944-21latency_hist20:39:560
57189911322,0cyclictest1305-21ssh22:35:240
57189911229,0cyclictest26405-21ssh00:37:520
57189911213,0cyclictest28954-21rm22:25:170
57189911212,0cyclictest26914-21rm22:21:000
57189911128,0cyclictest20429-21ssh22:07:250
57189911127,0cyclictest24349-21ssh22:15:380
57189911125,0cyclictest24761-21munin-run21:04:550
57189911042,0cyclictest81850irq/46-4a10000000:30:010
57189911028,0cyclictest18880-21ssh00:21:440
57189911026,0cyclictest16494-21ssh21:59:140
57189911023,0cyclictest81950irq/47-4a10000019:14:570
57189911012,0cyclictest13606-21ssh00:10:310
57189910933,0cyclictest19888-21sshd20:34:500
57189910929,0cyclictest9646-21sh22:53:060
57189910928,0cyclictest6159-21ssh22:45:170
57189910927,0cyclictest16966-21ssh23:08:440
57189910911,0cyclictest3802-21ssh22:40:380
57189910827,0cyclictest17717-21apt-config20:20:010
57189910826,0cyclictest9488-21apt19:29:510
57189910826,0cyclictest29957-21ssh21:19:160
57189910824,0cyclictest31929-21ssh22:31:370
57189910812,0cyclictest26493-21ssh21:11:520
57189910811,0cyclictest15184-21lldpd23:31:020
57189910727,0cyclictest10344-21ssh21:46:080
57189910726,0cyclictest10661-21ssh00:04:250
57189910725,0cyclictest14538-21sendmail-msp19:59:530
57189910720,0cyclictest6439-21ssh21:38:010
57189910710,0cyclictest3320-21ssh21:31:220
57189910710,0cyclictest25043-21sshd21:06:220
57189910619,0cyclictest21325-21rm23:18:040
57189910612,0cyclictest20876-21sendmail-msp20:39:530
57189910612,0cyclictest11714-21apt-get19:45:150
57189910611,0cyclictest14437-21apt21:54:550
57189910610,0cyclictest22871-21ssh22:12:360
57189910526,0cyclictest7305-21kworker/u2:322:00:250
57189910524,0cyclictest2975-21ssh23:47:580
57189910512,0cyclictest18226-21ssh23:11:200
57189910511,0cyclictest23265-21munin-run20:54:540
5718991049,0cyclictest8141-21ssh21:41:290
5718991049,0cyclictest32416-21ssh21:24:260
5718991049,0cyclictest11089-21ssh22:56:050
5718991048,0cyclictest16474-21ssh00:16:410
57189910429,0cyclictest24019-21sendmail20:59:540
57189910425,0cyclictest4186-21kworker/u2:419:15:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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