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2025-08-27 - 09:30

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 376 highest latencies:
System rack9slot8s.osadl.org (updated Wed Aug 27, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501570,0irq/47-4a10000015180-21lldpd19:07:030
147869912112,0cyclictest16718-21sendmail-msp19:19:500
147869911531,0cyclictest15555-21awk22:49:570
147869911530,0cyclictest29924-21ssh23:20:160
147869911425,0cyclictest6366-21ssh21:20:290
147869911330,0cyclictest23053-21munin-run00:15:000
147869911326,0cyclictest26244-21ssh22:03:180
147869911322,0cyclictest24931-21/usr/sbin/munin23:10:000
147869911311,0cyclictest9370-21sshd23:45:300
147869911230,0cyclictest15173-21snmpd20:54:290
147869911223,0cyclictest29714-21sendmail-msp23:19:590
147869911147,0cyclictest101ktimersoftd/023:40:070
147869911129,0cyclictest26033-21rm23:12:150
147869911123,0cyclictest891-21ssh23:27:390
147869911112,0cyclictest15173-21snmpd19:54:150
147869911111,0cyclictest23554-21/usr/sbin/munin20:04:530
147869911030,0cyclictest20243-21sendmail-msp22:59:580
147869911026,0cyclictest4722-21ssh23:35:190
147869910929,0cyclictest14904-21ssh21:39:040
147869910928,0cyclictest28653-21ssh00:26:530
147869910921,0cyclictest22209-21ssh21:54:430
147869910828,0cyclictest25709-21ssh00:20:290
147869910827,0cyclictest32629-21apt21:04:530
147869910825,0cyclictest30208-21munin-run20:49:530
147869910820,0cyclictest29481-21idleruntime-cro20:44:530
147869910818,0cyclictest20580-21sh23:00:330
147869910812,0cyclictest31678-21sendmail20:59:530
147869910719,0cyclictest4464-21ssh21:16:500
147869910719,0cyclictest25763-21apt20:19:520
14786991069,0cyclictest16943-21ssh22:52:520
147869910626,0cyclictest8496-21ssh21:25:090
147869910624,0cyclictest24642-21latency_hist22:00:010
147869910622,0cyclictest18909-21ssh00:05:550
147869910621,0cyclictest30670-21ssh00:31:120
147869910620,0cyclictest15173-21snmpd22:30:130
147869910615,0cyclictest10870-21apt22:39:580
147869910612,0cyclictest16691-21ssh21:42:460
14786991058,0cyclictest31999-21ssh22:15:320
14786991057,0cyclictest14924-21ssh23:57:320
147869910532,0cyclictest10696-21latency_hist21:29:580
147869910527,0cyclictest11508-21ssh23:50:050
147869910515,0cyclictest18905-21apt-get19:35:250
147869910513,0cyclictest3295-21ssh22:23:370
147869910512,0cyclictest28409-21sshd20:37:310
147869910512,0cyclictest18379-21ssh21:46:210
14786991048,0cyclictest30494-21ssh22:12:240
14786991048,0cyclictest2238-21ssh23:30:230
147869910428,0cyclictest15032-21ntpd20:28:500
147869910422,0cyclictest5593-21ssh22:28:360
147869910416,0cyclictest27919-21ssh22:06:500
147869910411,0cyclictest16642-21ssh00:01:040
147869910329,0cyclictest21337-21kworker/u2:000:20:010
147869910328,0cyclictest2136-21sh21:11:560
147869910229,0cyclictest22306-21runrttasks19:56:030
147869910227,0cyclictest31243-21kworker/u2:021:04:590
147869910226,0cyclictest17727-21kworker/u2:119:29:510
147869910222,0cyclictest81950irq/47-4a10000020:34:530
147869910215,0cyclictest15024-21kworker/u2:219:34:520
147869910210,0cyclictest593-21ssh00:36:190
147869910114,0cyclictest11483-21ssh22:41:050
147869910111,0cyclictest19416-21kworker/u2:319:44:520
147869910023,0cyclictest81950irq/47-4a10000020:21:220
14786999915,0cyclictest16690-21latency_hist19:19:540
14786999913,0cyclictest24692-21sshd20:12:240
14786999910,0cyclictest11367-21kworker/u2:019:14:500
14786999818,0cyclictest20188-21kworker/u2:020:09:510
1478699969,0cyclictest14986-21sendmail-mta19:46:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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