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 100 highest latencies:

System rackfslot7s.osadl.org (updated Wed Apr 08, 2026 00:44:18)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2078554	99	3284	16,3263	cyclictest	2177107	-21	kworker/1:1+events	00:20:16	1
2078549	99	3255	16,3234	cyclictest	2138331	-21	kworker/0:1+events	22:45:15	0
2078549	99	3190	13,3172	cyclictest	2138331	-21	kworker/0:1+events	22:15:15	0
2078554	99	3049	14,3030	cyclictest	2171801	-21	kworker/1:0+events	00:10:02	1
2078554	99	3049	14,3030	cyclictest	2171801	-21	kworker/1:0+events	00:10:01	1
2078557	99	2969	13,2952	cyclictest	2179384	-21	kworker/2:0+events	00:25:13	2
2078557	99	2816	11,2801	cyclictest	2118527	-21	kworker/2:1+events	21:15:15	2
2078549	99	2809	13,2792	cyclictest	2167096	-21	kworker/0:0+events	23:45:17	0
2078549	99	2809	13,2792	cyclictest	2123540	-21	kworker/0:1+events	21:38:03	0
2078549	99	2806	13,2789	cyclictest	2160777	-21	kworker/0:0+events	23:32:25	0
2078557	99	2800	11,2787	cyclictest	2164158	-21	kworker/2:0+events	23:55:12	2
2078557	99	2800	11,2786	cyclictest	2179384	-21	kworker/2:0+events	00:30:14	2
2078557	99	2773	13,2758	cyclictest	2150816	-21	kworker/2:2+events	23:05:01	2
2078554	99	2750	13,2734	cyclictest	2149289	-21	kworker/1:1+events	22:50:12	1
2078549	99	2668	15,2650	cyclictest	2133224	-21	kworker/0:0+events	22:00:11	0
2078549	99	2638	13,2623	cyclictest	2112365	-21	kworker/0:3+events	21:05:15	0
2078554	99	2632	12,2617	cyclictest	2131243	-21	kworker/1:2+events	22:20:11	1
2078549	99	2580	12,2564	cyclictest	2091224	-21	kworker/0:2+events	19:48:52	0
2078549	99	2579	12,2563	cyclictest	2167096	-21	kworker/0:0+events	23:41:53	0
2078549	99	2575	12,2560	cyclictest	2173563	-21	kworker/0:1+events	00:13:46	0
2078549	99	2575	12,2560	cyclictest	2173563	-21	kworker/0:1+events	00:13:45	0
2078554	99	2574	12,2560	cyclictest	2123627	-21	kworker/1:2+events	21:35:01	1
2078554	99	2569	12,2553	cyclictest	2155655	-21	kworker/1:2+events	23:28:14	1
2078549	99	2564	12,2548	cyclictest	2173563	-21	kworker/0:1+events	00:09:38	0
2078549	99	2564	12,2548	cyclictest	2173563	-21	kworker/0:1+events	00:09:38	0
2078549	99	2557	12,2543	cyclictest	2092884	-21	kworker/0:0+events	20:01:23	0
2078549	99	2552	12,2536	cyclictest	2170295	-21	kworker/0:2+events	00:29:51	0
2078549	99	2552	12,2536	cyclictest	2099637	-21	kworker/0:1+events	20:19:19	0
2078549	99	2550	6,2540	cyclictest	2167096	-21	kworker/0:0+events	23:51:52	0
2078554	99	2549	12,2533	cyclictest	2108267	-21	kworker/1:2+events	20:59:58	1
2078554	99	2548	12,2532	cyclictest	2115614	-21	kworker/1:1+events	21:16:00	1
2078549	99	2548	11,2533	cyclictest	2146214	-21	kworker/0:0+events	22:41:05	0
2078549	99	2541	12,2526	cyclictest	2104136	-21	kworker/0:0+events	20:48:31	0
2078557	99	2533	8,2524	cyclictest	2150816	-21	kworker/2:2+events	23:06:32	2
2078557	99	2526	9,2513	cyclictest	2162431	-21	kworker/2:1+events	23:29:00	2
2078549	99	2521	12,2505	cyclictest	2160777	-21	kworker/0:0+events	23:25:34	0
2078554	99	2518	12,2502	cyclictest	2100966	-21	kworker/1:2+events	20:18:09	1
2078557	99	2514	12,2498	cyclictest	2086451	-21	kworker/2:0+events	19:36:38	2
2078554	99	2514	12,2498	cyclictest	2177107	-21	kworker/1:1+events	00:27:31	1
2078549	99	2514	12,2498	cyclictest	2099637	-21	kworker/0:1+events	20:35:00	0
2078557	99	2510	12,2494	cyclictest	2162431	-21	kworker/2:1+events	23:39:13	2
2078557	99	2508	12,2492	cyclictest	2130038	-21	kworker/2:1+events	21:55:12	2
2078549	99	2505	12,2489	cyclictest	2173563	-21	kworker/0:1+events	00:15:19	0
2078549	99	2505	12,2489	cyclictest	2173563	-21	kworker/0:1+events	00:15:18	0
2078557	99	2503	12,2488	cyclictest	2079814	-21	kworker/2:1+events	19:27:25	2
2078554	99	2498	12,2482	cyclictest	2155655	-21	kworker/1:2+events	23:19:09	1
2078554	99	2498	12,2482	cyclictest	2141231	-21	kworker/1:0+events	22:38:27	1
2078549	99	2497	12,2481	cyclictest	2134843	-21	kworker/0:1+events	22:08:08	0
2078554	99	2495	12,2480	cyclictest	2108267	-21	kworker/1:2+events	21:13:00	1
2078549	99	2495	12,2479	cyclictest	2157142	-21	kworker/0:2+events	23:19:54	0
2078549	99	2495	12,2479	cyclictest	2092884	-21	kworker/0:0+events	19:56:01	0
2078549	99	2494	12,2478	cyclictest	2149553	-21	kworker/0:0+events	23:12:16	0
2078549	99	2494	12,2478	cyclictest	2099637	-21	kworker/0:1+events	20:43:07	0
2078557	99	2493	12,2478	cyclictest	2091284	-21	kworker/2:0+events	20:04:01	2
2078549	99	2492	12,2477	cyclictest	2089626	-21	kworker/0:1+events	19:51:55	0
2078554	99	2491	12,2475	cyclictest	2104375	-21	kworker/1:2+events	20:34:37	1
2078549	99	2491	11,2476	cyclictest	2170295	-21	kworker/0:2+events	00:38:37	0
2078549	99	2491	11,2476	cyclictest	2092884	-21	kworker/0:0+events	20:11:41	0
2078549	99	2490	12,2475	cyclictest	2112365	-21	kworker/0:3+events	21:11:50	0
2078554	99	2489	12,2474	cyclictest	2168925	-21	kworker/1:1+events	23:53:20	1
2078554	99	2489	12,2474	cyclictest	2086633	-21	kworker/1:1+events	19:54:54	1
2078549	99	2489	12,2474	cyclictest	2123540	-21	kworker/0:1+events	21:31:35	0
2078554	99	2488	11,2473	cyclictest	2128036	-21	kworker/1:0+events	21:49:56	1
2078549	99	2488	12,2472	cyclictest	2180743	-21	kworker/0:1+events	00:33:59	0
2078549	99	2488	11,2474	cyclictest	2086391	-21	kworker/0:2+events	19:40:51	0
2078549	99	2487	12,2471	cyclictest	2112365	-21	kworker/0:3+events	21:03:21	0
2078549	99	2486	11,2472	cyclictest	2141354	-21	kworker/0:2+events	22:28:34	0
2078549	99	2486	10,2472	cyclictest	2127060	-21	kworker/0:2+events	22:13:22	0
2078554	99	2485	12,2469	cyclictest	2086633	-21	kworker/1:1+events	19:42:25	1
2078549	99	2485	8,2474	cyclictest	2147835	-21	kworker/0:2+events	22:50:37	0
2078554	99	2483	12,2467	cyclictest	2073532	-21	kworker/1:0+events	19:30:28	1
2078549	99	2483	12,2469	cyclictest	2112365	-21	kworker/0:3+events	21:16:46	0
2078549	99	2483	12,2468	cyclictest	2149553	-21	kworker/0:0+events	22:55:30	0
2078554	99	2482	12,2467	cyclictest	2131243	-21	kworker/1:2+events	22:15:38	1
2078554	99	2482	12,2466	cyclictest	2115614	-21	kworker/1:1+events	21:22:30	1
2078549	99	2482	12,2468	cyclictest	2127060	-21	kworker/0:2+events	21:52:57	0
2078554	99	2481	12,2465	cyclictest	2171801	-21	kworker/1:0+events	00:08:31	1
2078554	99	2481	12,2465	cyclictest	2171801	-21	kworker/1:0+events	00:08:30	1
2078557	99	2478	12,2463	cyclictest	2138186	-21	kworker/2:0+events	22:16:00	2
2078554	99	2478	10,2465	cyclictest	2177107	-21	kworker/1:1+events	00:32:10	1
2078554	99	2477	10,2463	cyclictest	2153939	-21	kworker/1:1+events	23:14:32	1
2078554	99	2476	12,2462	cyclictest	2115614	-21	kworker/1:1+events	21:30:05	1
2078554	99	2476	12,2460	cyclictest	2097499	-21	kworker/1:1+events	20:07:05	1
2078554	99	2475	11,2460	cyclictest	2158865	-21	kworker/1:0+events	23:22:56	1
2078554	99	2474	12,2460	cyclictest	2131243	-21	kworker/1:2+events	22:05:02	1
2078554	99	2474	12,2459	cyclictest	2155655	-21	kworker/1:2+events	23:31:17	1
2078554	99	2474	12,2459	cyclictest	2128036	-21	kworker/1:0+events	21:44:58	1
2078549	99	2471	10,2458	cyclictest	2121936	-21	kworker/0:0+events	21:28:58	0
2078554	99	2468	12,2452	cyclictest	2168925	-21	kworker/1:1+events	23:58:13	1
2078554	99	2468	11,2454	cyclictest	2134961	-21	kworker/1:0+events	22:13:45	1
2078554	99	2467	11,2452	cyclictest	2094269	-21	kworker/1:0+events	20:03:37	1
2078554	99	2466	11,2452	cyclictest	2108267	-21	kworker/1:2+events	20:54:12	1
2078557	99	2465	10,2452	cyclictest	2105714	-21	kworker/2:0+events	20:42:44	2
2078557	99	2462	12,2447	cyclictest	2110528	-21	kworker/2:2+events	20:57:17	2
2078549	99	2460	12,2444	cyclictest	2167096	-21	kworker/0:0+events	00:01:35	0
2078557	99	2458	11,2444	cyclictest	2115647	-21	kworker/2:2+events	21:20:13	2
2078557	99	2457	12,2442	cyclictest	2177286	-21	kworker/2:1+events	00:21:24	2
2078554	99	2457	12,2442	cyclictest	2133163	-21	kworker/1:1+events	22:01:17	1
2078557	99	2451	11,2436	cyclictest	2115647	-21	kworker/2:2+events	21:04:52	2
2078557	99	2450	12,2435	cyclictest	2105714	-21	kworker/2:0+events	20:36:07	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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