OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #7

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
Special All - All RT - Optimization - Ethernet - Thumbnails

Click here to display the system's profile data.

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: 100 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 rackfslot7s.osadl.org (updated Thu May 21, 2026 00:44:17)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1571448	99	3631	19,3609	cyclictest	1587534	-21	kworker/0:1+events	20:15:18	0
1571453	99	3177	14,3158	cyclictest	1664319	-21	kworker/1:2+events	00:00:01	1
1571453	99	3117	10,3102	cyclictest	1653127	-21	kworker/1:2+events	23:35:16	1
1571453	99	2967	13,2949	cyclictest	1666091	-21	kworker/1:1+events	00:05:17	1
1571448	99	2798	13,2780	cyclictest	1641848	-21	kworker/0:0+events	22:55:18	0
1571448	99	2782	12,2766	cyclictest	1574904	-21	kworker/0:2+events	19:20:16	0
1571459	99	2774	9,2761	cyclictest	1632185	-21	kworker/3:2+events	22:25:36	3
1571453	99	2764	13,2746	cyclictest	1590998	-21	kworker/1:1+events	20:14:09	1
1571453	99	2762	13,2745	cyclictest	1587653	-21	kworker/1:0+events	20:08:02	1
1571448	99	2752	6,2742	cyclictest	1618095	-21	kworker/0:1+events	22:20:17	0
1571456	99	2739	12,2724	cyclictest	1646559	-21	kworker/2:2+events	23:30:00	2
1571459	99	2562	12,2547	cyclictest	1622619	-21	kworker/3:2+events	21:54:54	3
1571453	99	2556	11,2541	cyclictest	1603592	-21	kworker/1:1+events	20:50:13	1
1571459	99	2555	12,2539	cyclictest	1597193	-21	kworker/3:1+events	20:49:27	3
1571459	99	2550	8,2538	cyclictest	1582930	-21	kworker/3:1+events	19:54:16	3
1571459	99	2544	9,2532	cyclictest	1642031	-21	kworker/3:2+events	23:02:32	3
1571459	99	2544	12,2528	cyclictest	1622619	-21	kworker/3:2+events	22:08:30	3
1571448	99	2541	11,2526	cyclictest	1659459	-21	kworker/0:0+events	23:52:45	0
1571453	99	2537	12,2521	cyclictest	1646751	-21	kworker/1:1+events	23:11:15	1
1571453	99	2537	12,2521	cyclictest	1613106	-21	kworker/1:2+events	21:19:13	1
1571453	99	2532	12,2516	cyclictest	1672744	-21	kworker/1:1+events	00:29:58	1
1571453	99	2531	12,2516	cyclictest	1632217	-21	kworker/1:1+events	22:47:59	1
1571453	99	2530	9,2517	cyclictest	1628609	-21	kworker/1:0+events	22:09:14	1
1571453	99	2530	12,2514	cyclictest	1632217	-21	kworker/1:1+events	22:17:59	1
1571453	99	2530	11,2515	cyclictest	1632217	-21	kworker/1:1+events	22:25:14	1
1571453	99	2525	11,2512	cyclictest	1666091	-21	kworker/1:1+events	00:13:36	1
1571453	99	2524	12,2508	cyclictest	1576468	-21	kworker/1:2+events	19:30:54	1
1571453	99	2523	12,2508	cyclictest	1675759	-21	kworker/1:0+events	00:34:31	1
1571448	99	2514	12,2499	cyclictest	1619692	-21	kworker/0:2+events	21:41:43	0
1571448	99	2508	9,2496	cyclictest	1659459	-21	kworker/0:0+events	23:46:44	0
1571456	99	2507	9,2494	cyclictest	1642205	-21	kworker/2:0+events	23:07:53	2
1571456	99	2507	12,2492	cyclictest	1667635	-21	kworker/2:0+events	00:08:44	2
1571459	99	2505	11,2490	cyclictest	1627591	-21	kworker/3:0+events	22:10:44	3
1571448	99	2505	9,2492	cyclictest	1613436	-21	kworker/0:0+events	21:29:30	0
1571456	99	2504	11,2490	cyclictest	1650375	-21	kworker/2:0+events	23:24:00	2
1571448	99	2504	12,2488	cyclictest	1587534	-21	kworker/0:1+events	20:09:10	0
1571453	99	2503	10,2490	cyclictest	1632217	-21	kworker/1:1+events	22:41:12	1
1571453	99	2502	12,2487	cyclictest	1654720	-21	kworker/1:0+events	23:29:14	1
1571448	99	2502	12,2487	cyclictest	1581129	-21	kworker/0:0+events	19:40:31	0
1571459	99	2501	14,2484	cyclictest	1632185	-21	kworker/3:2+events	22:34:18	3
1571459	99	2501	12,2485	cyclictest	1618046	-21	kworker/3:2+events	21:33:20	3
1571456	99	2501	12,2485	cyclictest	1581250	-21	kworker/2:1+events	19:48:51	2
1571448	99	2498	9,2486	cyclictest	1663574	-21	kworker/0:2+events	00:09:07	0
1571456	99	2496	12,2480	cyclictest	1638770	-21	kworker/2:1+events	22:49:34	2
1571453	99	2495	11,2482	cyclictest	1605226	-21	kworker/1:0+events	21:00:06	1
1571459	99	2494	12,2479	cyclictest	1674163	-21	kworker/3:2+events	00:30:45	3
1571453	99	2493	11,2478	cyclictest	1613106	-21	kworker/1:2+events	21:21:28	1
1571453	99	2492	10,2481	cyclictest	1664319	-21	kworker/1:2+events	00:02:15	1
1571459	99	2491	12,2476	cyclictest	1636907	-21	kworker/3:1+events	22:44:35	3
1571459	99	2491	12,2475	cyclictest	1666004	-21	kworker/3:2+events	00:07:59	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2024-07-29 - 23:00