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2025-07-19 - 06:29

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 Sat Jul 19, 2025 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819501740,0irq/47-4a1000007158-21sshd19:07:390
81950830,0irq/47-4a10000020462-21kworker/u2:420:40:020
81850800,0irq/46-4a1000002424-21modprobe23:45:000
81850800,0irq/46-4a10000010738-21grep21:44:590
3116328011,0sleep031172-21ssh22:28:070
81950790,0irq/47-4a10000014109-21latency_hist00:10:030
81850790,0irq/46-4a1000004331-21ssh23:49:070
81850790,0irq/46-4a10000028206-21ssh21:13:310
297872785,0sleep029792-21ssh21:16:470
81850770,0irq/46-4a1000007732-21ssh21:38:470
81850770,0irq/46-4a1000006441-21ssh22:44:270
81850770,0irq/46-4a10000017797-21ssh23:08:230
81850770,0irq/46-4a10000015173-21snmpd20:34:190
81850770,0irq/46-4a1000001501-21ssh21:25:280
81850770,0irq/46-4a10000013985-21apt-key19:49:560
219982770,0chrt18793-21kworker/u2:200:26:430
156762770,0chrt11399-21kworker/u2:221:55:200
81850760,0irq/46-4a1000009005-21seq23:59:100
81850760,0irq/46-4a10000029657-21ssh22:24:570
81850760,0irq/46-4a10000020690-21ssh22:05:550
81850760,0irq/46-4a10000019236-21ssh00:20:440
81850760,0irq/46-4a10000014087-21ssh23:00:110
81850750,0irq/46-4a1000003710-21sh22:38:420
81850750,0irq/46-4a10000018717-21ssh23:10:120
81850750,0irq/46-4a10000013776-21apt-get23:00:010
81950740,0irq/47-4a10000012116-21kworker/u2:700:16:200
81850740,0irq/46-4a10000025109-21ssh23:24:040
81850740,0irq/46-4a10000015173-21snmpd21:24:350
81950730,0irq/47-4a100000306-21kworker/u2:022:31:350
81950730,0irq/47-4a10000015051-21kworker/u2:000:15:030
81850730,0irq/46-4a1000009986-21seq21:43:290
81850730,0irq/46-4a1000005433-21ssh21:33:560
81850730,0irq/46-4a10000027856-21munin-run23:30:000
81850730,0irq/46-4a10000026414-21kworker/u2:123:36:250
81850730,0irq/46-4a10000023733-21ssh00:30:230
175782730,0sleep017435-21kworker/u2:020:12:150
81850720,0irq/46-4a100000560-21kswapd021:05:220
81850720,0irq/46-4a10000026543-21kworker/u2:400:37:490
81850720,0irq/46-4a10000023362-21ssh22:11:350
81850720,0irq/46-4a10000014985-21chrt21:54:030
81850720,0irq/46-4a10000010300-21ssh00:01:480
81850710,0irq/46-4a1000007620-21kworker/u2:223:19:150
81850710,0irq/46-4a10000028797-21kworker/u2:223:32:220
81850710,0irq/46-4a10000024782-21munin-run20:59:540
79342710,0sleep07620-21kworker/u2:222:47:310
200802710,0chrt19713-21kworker/u2:320:29:270
171592710,0sleep014329-21kworker/u2:520:09:500
153062710,0chrt14166-21kworker/u2:219:58:280
103562710,0sleep07424-21kworker/u2:119:25:550
96802700,0sleep09618-21kworker/u2:619:21:240
110802700,0chrt10364-21kworker/u2:819:30:520
81950690,0irq/47-4a1000008979-21kworker/u2:022:04:110
81850690,0irq/46-4a1000007620-21kworker/u2:222:51:260
81850690,0irq/46-4a1000003063-21kworker/u2:023:55:010
251712690,0chrt25072-21kworker/u2:421:02:040
135752690,0sleep013383-21kworker/u2:119:48:000
81850680,0irq/46-4a10000026900-21ssh22:19:110
81850680,0irq/46-4a1000002-21kthreadd20:00:210
210062680,0sleep017435-21kworker/u2:020:35:030
81950670,0irq/47-4a1000008959-1kworker/u3:419:19:010
81950670,0irq/47-4a10000021209-1kworker/u3:320:54:540
81950650,0irq/47-4a10000023210-21runrttasks20:49:140
81850640,0irq/46-4a10000016065-1kworker/u3:220:19:520
81950630,0irq/47-4a1000008958-1kworker/u3:219:36:140
7472995034,0cyclictest7557-21latency_hist19:09:510
7472994934,0cyclictest19283-21runrttasks20:23:550
7472994934,0cyclictest13144-21latency_hist19:44:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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