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 Fri Jul 10, 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
117840	99	3078	15,3057	cyclictest	122743	-21	kworker/3:1+events	19:25:13	3
117834	99	2984	6,2974	cyclictest	156585	-21	kworker/1:0+events	21:20:22	1
117834	99	2896	13,2881	cyclictest	168171	-21	kworker/1:1+events	21:55:21	1
117840	99	2874	15,2856	cyclictest	137386	-21	kworker/3:2+events	20:14:49	3
117831	99	2810	0,2806	cyclictest	135784	-21	kworker/0:1+events	20:49:05	0
117840	99	2799	13,2782	cyclictest	197266	-21	kworker/3:1+events	23:15:56	3
117831	99	2799	13,2782	cyclictest	132495	-21	kworker/0:2+events	20:01:03	0
117831	99	2798	13,2781	cyclictest	181156	-21	kworker/0:2+events	22:40:11	0
117831	99	2794	13,2777	cyclictest	211572	-21	kworker/0:0+events	00:01:09	0
117831	99	2794	13,2777	cyclictest	171153	-21	kworker/0:0+events	22:14:06	0
117831	99	2779	13,2762	cyclictest	154757	-21	kworker/0:1+events	21:07:06	0
117831	99	2773	13,2756	cyclictest	171153	-21	kworker/0:0+events	21:55:44	0
117831	99	2768	13,2751	cyclictest	171153	-21	kworker/0:0+events	22:24:16	0
117831	99	2765	12,2749	cyclictest	198695	-21	kworker/0:2+events	23:37:58	0
117834	99	2759	14,2741	cyclictest	210148	-21	kworker/1:0+events	23:58:28	1
117840	99	2756	13,2738	cyclictest	150155	-21	kworker/3:1+events	21:00:00	3
117831	99	2746	9,2733	cyclictest	135784	-21	kworker/0:1+events	20:23:13	0
117831	99	2746	9,2733	cyclictest	135784	-21	kworker/0:1+events	20:23:13	0
117836	99	2737	15,2718	cyclictest	205154	-21	kworker/2:0+events	23:40:14	2
117831	99	2737	13,2720	cyclictest	171153	-21	kworker/0:0+events	22:01:31	0
117831	99	2731	13,2714	cyclictest	119259	-21	kworker/0:2+events	19:36:41	0
117834	99	2730	13,2715	cyclictest	222925	-21	kworker/1:1+events	00:35:09	1
117834	99	2713	13,2697	cyclictest	156585	-21	kworker/1:0+events	21:14:17	1
117836	99	2702	13,2687	cyclictest	188910	-21	kworker/2:1+events	23:00:20	2
117834	99	2701	13,2686	cyclictest	160348	-21	kworker/1:1+events	21:25:18	1
117836	99	2700	13,2683	cyclictest	143395	-21	kworker/2:1+events	20:28:34	2
117836	99	2695	13,2678	cyclictest	168295	-21	kworker/2:0+events	21:50:49	2
117834	99	2694	13,2677	cyclictest	156585	-21	kworker/1:0+events	22:06:53	1
117836	99	2691	13,2674	cyclictest	188910	-21	kworker/2:1+events	22:49:12	2
117831	99	2691	13,2674	cyclictest	214815	-21	kworker/0:1+events	00:09:24	0
117831	99	2688	12,2673	cyclictest	159971	-21	kworker/0:1+events	21:37:05	0
117831	99	2687	13,2670	cyclictest	162892	-21	kworker/0:0+events	21:30:15	0
117834	99	2686	9,2673	cyclictest	168171	-21	kworker/1:1+events	21:47:02	1
117836	99	2674	13,2657	cyclictest	224401	-21	kworker/2:2+events	00:39:19	2
117834	99	2674	12,2658	cyclictest	182693	-21	kworker/1:1+events	22:34:49	1
117840	99	2672	13,2656	cyclictest	114284	-21	kworker/3:0+events	19:19:10	3
117836	99	2664	13,2647	cyclictest	211481	-21	kworker/2:0+events	23:57:44	2
117836	99	2664	11,2649	cyclictest	134507	-21	kworker/2:2+events	20:11:23	2
117834	99	2664	13,2647	cyclictest	162951	-21	kworker/1:2+events	21:30:39	1
117840	99	2663	13,2646	cyclictest	131156	-21	kworker/3:2+events	19:57:35	3
117836	99	2661	13,2644	cyclictest	147244	-21	kworker/2:1+events	20:50:14	2
117836	99	2660	11,2646	cyclictest	194096	-21	kworker/2:2+events	23:05:18	2
117834	99	2660	13,2645	cyclictest	158433	-21	kworker/1:2+events	21:15:04	1
117834	99	2660	13,2643	cyclictest	146837	-21	kworker/1:0+events	20:48:22	1
117834	99	2659	13,2644	cyclictest	135482	-21	kworker/1:1+events	20:16:23	1
117840	99	2642	13,2625	cyclictest	126329	-21	kworker/3:1+events	19:38:58	3
117831	99	2640	13,2623	cyclictest	171153	-21	kworker/0:0+events	22:09:55	0
117840	99	2633	12,2617	cyclictest	189087	-21	kworker/3:0+events	22:56:52	3
117836	99	2633	12,2617	cyclictest	177735	-21	kworker/2:2+events	22:21:36	2
117840	99	2631	13,2614	cyclictest	185814	-21	kworker/3:2+events	22:52:40	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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