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2025-07-04 - 05:02

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 100 highest latencies:
System rack9slot8s.osadl.org (updated Fri Jul 04, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501670,0irq/46-4a10000032448-21kworker/0:119:05:110
81850830,0irq/46-4a1000002757-21ssh21:40:380
81850790,0irq/46-4a100000443-21ssh21:35:520
81850780,0irq/46-4a10000031449-21ssh22:40:560
81850780,0irq/46-4a1000001665-21kworker/u2:022:48:500
81850780,0irq/46-4a10000012099-21ssh23:08:340
81850770,0irq/46-4a1000008340-21ssh23:00:300
81850770,0irq/46-4a1000004782-21ssh22:53:110
81850770,0irq/46-4a10000023872-21sh23:33:240
81850770,0irq/46-4a10000018550-21ssh22:14:000
81850770,0irq/46-4a10000018171-21ssh00:30:120
81850770,0irq/46-4a10000017659-21latency_hist23:20:020
81850770,0irq/46-4a10000013544-21ssh00:20:270
81850760,0irq/46-4a1000009641-21ssh21:55:070
81850760,0irq/46-4a10000021074-21ssh23:27:210
81850760,0irq/46-4a10000015828-21ssh00:25:120
81850760,0irq/46-4a10000013837-21sh23:12:100
81850750,0irq/46-4a1000007513-21ssh21:50:390
81850750,0irq/46-4a1000005530-21ssh21:46:300
81850750,0irq/46-4a1000003433-21ssh23:59:030
81850750,0irq/46-4a10000028493-21ssh22:34:570
81850750,0irq/46-4a10000023779-21ssh21:16:460
81850750,0irq/46-4a10000012000-21ssh22:00:020
81850740,0irq/46-4a10000028663-21ssh22:35:040
81850740,0irq/46-4a10000022679-21apt00:40:010
81850740,0irq/46-4a10000021638-21ssh22:20:160
81850740,0irq/46-4a10000015173-21snmpd20:43:170
81850730,0irq/46-4a1000006720-21ssh22:57:130
81850730,0irq/46-4a10000030929-21kworker/u2:021:33:490
81850730,0irq/46-4a10000025667-21ssh23:37:100
81850730,0irq/46-4a10000018402-21ssh23:21:360
81950720,0irq/47-4a10000030296-21kworker/u2:100:03:320
81950720,0irq/47-4a10000019942-21kworker/u2:222:26:450
81950720,0irq/47-4a10000015084-21kworker/u2:122:18:190
81850720,0irq/46-4a10000020386-21apt-get21:10:320
81950710,0irq/47-4a10000032231-21kworker/u2:223:52:110
81850710,0irq/46-4a1000009592-21apt-get20:00:170
81850710,0irq/46-4a1000006798-21sh00:06:040
81850710,0irq/46-4a1000002069-21kworker/u2:519:14:500
81850710,0irq/46-4a10000020369-21kworker/u2:221:20:030
81850710,0irq/46-4a10000017010-21kworker/u2:121:27:560
132182710,0chrt10878-21kworker/u2:420:20:580
81850700,0irq/46-4a10000019290-21chrt21:02:070
81850700,0irq/46-4a10000015892-21kworker/u2:323:43:020
81850700,0irq/46-4a10000012652-21kworker/u2:522:05:310
63122700,0sleep01294-21kworker/u2:319:37:220
203412700,0sleep018143-21kworker/u2:321:09:420
140322700,0chrt13979-21kworker/u2:020:26:380
81850690,0irq/46-4a10000011751-21kworker/u2:000:20:000
77872690,0sleep07665-21kworker/u2:019:47:150
108562690,0chrt10130-21kworker/u2:120:06:320
81850680,0irq/46-4a1000008777-21chrt00:10:160
53402680,0chrt3236-21kworker/u2:219:30:260
35372680,0sleep03239-21kworker/u2:419:18:510
305842680,0chrt30296-21kworker/u2:123:47:390
81850640,0irq/46-4a10000010879-1kworker/u3:120:11:500
81950630,0irq/47-4a1000009-21ksoftirqd/020:15:180
81850610,0irq/46-4a1000003238-1kworker/u3:419:21:380
1780995746,0cyclictest81850irq/46-4a10000020:55:150
1780995337,0cyclictest0-21swapper19:43:490
1780995242,0cyclictest101ktimersoftd/019:58:380
1780995136,0cyclictest81850irq/46-4a10000019:52:000
1780995040,0cyclictest101ktimersoftd/020:52:130
101480,0ktimersoftd/00-21swapper20:32:140
1780994715,0cyclictest81950irq/47-4a10000020:39:530
1780994631,0cyclictest17435-21latency_hist20:49:540
1780994621,0cyclictest0-21swapper19:26:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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