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2025-12-11 - 07:34

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 all highest latencies:
System rack9slot8s.osadl.org (updated Thu Dec 11, 2025 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
818501740,0irq/46-4a10000015201-21runrttasks19:08:390
81850820,0irq/46-4a1000007853-21ssh23:39:520
81850810,0irq/46-4a10000027848-21ssh00:21:590
81850810,0irq/46-4a10000024332-21runrttasks00:14:380
81950800,0irq/47-4a10000024386-21kworker/u2:420:09:540
81850800,0irq/46-4a10000019933-21sshd19:33:130
81850800,0irq/46-4a1000001294-21ssh22:16:420
81850790,0irq/46-4a1000006272-21ssh22:27:190
81850790,0irq/46-4a1000004072-21ssh21:13:510
81850790,0irq/46-4a10000030959-21ssh00:28:440
81850790,0irq/46-4a10000026729-21ssh22:01:380
81850790,0irq/46-4a10000015896-21ssh21:38:440
81850780,0irq/46-4a10000016603-21ssh21:40:040
184362788,0sleep018445-21ssh00:02:040
81950770,0irq/47-4a1000005135-21munin-run22:24:580
81950770,0irq/47-4a10000031946-21ssh23:22:060
81850770,0irq/46-4a10000022210-21ssh23:01:220
81850770,0irq/46-4a10000021367-21runrttasks22:59:460
81850770,0irq/46-4a10000013909-21ssh23:52:340
81850770,0irq/46-4a10000013783-21ssh22:43:270
81850770,0irq/46-4a1000001010-21ssh23:25:160
81850770,0irq/46-4a10000010044-21sshd21:26:170
275822770,0sleep023608-21kworker/u2:220:23:290
81950760,0irq/47-4a10000016561-21awk19:14:510
81950760,0irq/47-4a10000015184-21lldpd21:49:550
81850760,0irq/46-4a10000032523-21seq20:55:070
81850760,0irq/46-4a10000028170-21ssh23:14:190
81850760,0irq/46-4a10000026718-21ssh00:19:450
44202760,0chrt4042-21kworker/u2:323:32:280
81950750,0irq/47-4a10000016602-21ssh23:58:150
81850750,0irq/46-4a1000009793-21runrttasks23:43:550
81850750,0irq/46-4a1000005714-21kworker/u2:122:30:000
81850750,0irq/46-4a1000005588-21ssh21:16:560
81850750,0irq/46-4a10000031863-21ssh22:12:430
81850750,0irq/46-4a10000031056-21kworker/u2:521:22:170
81850750,0irq/46-4a1000002768-21kworker/u2:523:08:590
81850750,0irq/46-4a10000011019-21ssh22:37:300
81950740,0irq/47-4a1000001432-21kworker/u2:321:34:540
81950740,0irq/47-4a10000010828-21runrttasks23:45:570
81850740,0irq/46-4a1000003845-21ssh00:40:040
81850740,0irq/46-4a10000032665-21ssh00:32:200
81850740,0irq/46-4a10000028299-21runrttasks22:04:590
81850740,0irq/46-4a10000018658-21ssh22:53:550
81850730,0irq/46-4a100000560-21kswapd000:05:420
81850730,0irq/46-4a10000023580-21latency_hist21:54:590
81850730,0irq/46-4a10000014548-21latency_hist22:45:010
302082730,0sleep023608-21kworker/u2:220:40:460
264162730,0sleep025880-21kworker/u2:020:15:150
238142730,0sleep021165-21kworker/u2:019:58:080
206012730,0chrt20390-21kworker/u2:319:37:430
81950720,0irq/47-4a10000028644-21ssh23:15:080
81850720,0irq/46-4a10000024251-21kworker/u2:021:59:580
280522720,0chrt25131-21kworker/u2:320:26:180
228262720,0chrt21916-21kworker/u2:419:51:050
210842720,0sleep020390-21kworker/u2:319:40:280
175812720,0chrt17291-21kworker/u2:519:18:490
11302720,0sleep031803-21kworker/u2:021:02:290
81950710,0irq/47-4a10000017294-21kworker/u2:719:24:510
291952710,0chrt25131-21kworker/u2:320:34:420
188412710,0chrt18822-21kworker/u2:019:26:550
81950700,0irq/47-4a10000031056-21kworker/u2:520:54:560
81950700,0irq/47-4a10000022376-21/usr/sbin/munin19:49:540
257552700,0sleep024386-21kworker/u2:420:10:520
81850690,0irq/46-4a10000031449-21cron20:49:540
81950670,0irq/47-4a10000028787-21kworker/u2:020:39:550
15836995747,0cyclictest81850irq/46-4a10000020:04:310
81950530,0irq/47-4a10000014901-21cron21:09:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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