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 Sat Mar 14, 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
2827135	99	2829	13,2812	cyclictest	2833677	-21	kworker/3:0+events	19:30:00	3
2827124	99	2782	14,2765	cyclictest	2912261	-21	kworker/1:2+events	23:35:12	1
2827124	99	2767	13,2750	cyclictest	2843511	-21	kworker/1:0+events	20:30:00	1
2827129	99	2765	7,2754	cyclictest	2860854	-21	kworker/2:1+events	21:00:17	2
2827124	99	2742	12,2725	cyclictest	2902784	-21	kworker/1:0+events	23:10:12	1
2827129	99	2736	13,2719	cyclictest	2907291	-21	kworker/2:1+events	23:30:17	2
2827124	99	2714	13,2699	cyclictest	2920510	-21	kworker/1:2+events	00:10:16	1
2827121	99	2696	10,2683	cyclictest	2843359	-21	kworker/0:0+events	20:15:11	0
2827124	99	2679	11,2664	cyclictest	2891552	-21	kworker/1:1+events	22:45:18	1
2827121	99	2677	12,2662	cyclictest	2871905	-21	kworker/0:0+events	21:50:00	0
2827135	99	2666	13,2649	cyclictest	2882112	-21	kworker/3:2+events	22:00:16	3
2827129	99	2633	12,2617	cyclictest	2854664	-21	kworker/2:0+events	20:40:17	2
2827135	99	2590	12,2574	cyclictest	2928398	-21	kworker/3:1+events	00:21:40	3
2827121	99	2579	12,2565	cyclictest	2830690	-21	kworker/0:0+events	19:20:08	0
2827124	99	2570	12,2556	cyclictest	2865473	-21	kworker/1:1+events	21:15:05	1
2827135	99	2567	10,2554	cyclictest	2910893	-21	kworker/3:1+events	23:43:54	3
2827121	99	2552	12,2536	cyclictest	2918761	-21	kworker/0:2+events	00:03:49	0
2827121	99	2548	11,2534	cyclictest	2883405	-21	kworker/0:0+events	22:06:44	0
2827121	99	2543	12,2527	cyclictest	2880837	-21	kworker/0:1+events	22:04:49	0
2827124	99	2517	8,2505	cyclictest	2913852	-21	kworker/1:1+events	23:50:42	1
2827121	99	2499	12,2483	cyclictest	2851291	-21	kworker/0:0+events	20:37:34	0
2827135	99	2497	12,2481	cyclictest	2899483	-21	kworker/3:0+events	23:03:18	3
2827135	99	2497	0,2494	cyclictest	2915564	-21	kworker/3:0+events	00:09:31	3
2827124	99	2495	12,2479	cyclictest	2901094	-21	kworker/1:1+events	23:01:45	1
2827121	99	2495	9,2482	cyclictest	2917135	-21	kworker/0:0+events	23:49:32	0
2827135	99	2494	12,2479	cyclictest	2894517	-21	kworker/3:1+events	22:48:45	3
2827135	99	2494	12,2479	cyclictest	2845188	-21	kworker/3:2+events	20:07:57	3
2827121	99	2494	12,2479	cyclictest	2851291	-21	kworker/0:0+events	21:11:17	0
2827124	99	2493	12,2477	cyclictest	2909023	-21	kworker/1:2+events	23:23:06	1
2827124	99	2493	12,2476	cyclictest	2902784	-21	kworker/1:0+events	23:19:19	1
2827121	99	2493	12,2477	cyclictest	2888336	-21	kworker/0:0+events	22:51:47	0
2827121	99	2493	11,2478	cyclictest	2904117	-21	kworker/0:0+events	23:08:18	0
2827124	99	2492	12,2477	cyclictest	2927045	-21	kworker/1:2+events	00:27:22	1
2827124	99	2492	12,2477	cyclictest	2853159	-21	kworker/1:1+events	20:39:30	1
2827124	99	2492	12,2476	cyclictest	2927045	-21	kworker/1:2+events	00:36:10	1
2827121	99	2492	8,2481	cyclictest	2843359	-21	kworker/0:0+events	19:58:54	0
2827124	99	2491	12,2476	cyclictest	2912261	-21	kworker/1:2+events	23:47:17	1
2827124	99	2491	11,2477	cyclictest	2868729	-21	kworker/1:0+events	21:20:52	1
2827124	99	2490	12,2475	cyclictest	2886551	-21	kworker/1:0+events	22:11:42	1
2827124	99	2490	12,2474	cyclictest	2861059	-21	kworker/1:2+events	21:11:40	1
2827124	99	2490	12,2474	cyclictest	2861059	-21	kworker/1:2+events	21:05:40	1
2827124	99	2490	12,2474	cyclictest	2861059	-21	kworker/1:2+events	21:05:39	1
2827121	99	2490	12,2475	cyclictest	2828415	-21	kworker/0:2+events	19:50:54	0
2827124	99	2489	12,2473	cyclictest	2925390	-21	kworker/1:0+events	00:31:34	1
2827124	99	2489	11,2474	cyclictest	2925390	-21	kworker/1:0+events	00:21:18	1
2827121	99	2489	12,2475	cyclictest	2930216	-21	kworker/0:2+events	00:35:00	0
2827121	99	2489	12,2474	cyclictest	2910593	-21	kworker/0:1+events	23:58:56	0
2827121	99	2488	12,2472	cyclictest	2908706	-21	kworker/0:0+events	23:28:26	0
2827124	99	2486	12,2471	cyclictest	2895086	-21	kworker/1:0+events	22:55:15	1
2827121	99	2486	12,2471	cyclictest	2859168	-21	kworker/0:2+events	20:50:25	0
2827121	99	2485	12,2470	cyclictest	2871905	-21	kworker/0:0+events	21:38:45	0
2827121	99	2485	10,2471	cyclictest	2920355	-21	kworker/0:0+events	00:14:03	0
2827121	99	2484	11,2469	cyclictest	2896398	-21	kworker/0:1+events	22:46:06	0
2827124	99	2483	12,2468	cyclictest	2886551	-21	kworker/1:0+events	22:20:47	1
2827121	99	2473	10,2460	cyclictest	2867189	-21	kworker/0:2+events	21:21:15	0
2827121	99	2471	12,2456	cyclictest	2912194	-21	kworker/0:2+events	23:39:22	0
2827124	99	2469	12,2454	cyclictest	2893286	-21	kworker/1:2+events	22:38:56	1
2827124	99	2469	12,2453	cyclictest	2875232	-21	kworker/1:0+events	21:42:55	1
2827129	99	2468	10,2454	cyclictest	2902419	-21	kworker/2:1+events	23:09:27	2
2827124	99	2466	12,2451	cyclictest	2910624	-21	kworker/1:0+events	23:28:02	1
2827124	99	2464	12,2448	cyclictest	2828758	-21	kworker/1:3+events	19:35:22	1
2827124	99	2464	10,2450	cyclictest	2859407	-21	kworker/1:1+events	20:52:41	1
2827121	99	2462	12,2447	cyclictest	2888336	-21	kworker/0:0+events	22:34:04	0
2827124	99	2461	12,2446	cyclictest	2895086	-21	kworker/1:0+events	22:52:57	1
2827121	99	2459	10,2446	cyclictest	2888336	-21	kworker/0:0+events	22:39:18	0
2827124	99	2458	12,2442	cyclictest	2839985	-21	kworker/1:2+events	19:52:05	1
2827121	99	2457	11,2443	cyclictest	2871905	-21	kworker/0:0+events	21:34:15	0
2827121	99	2457	10,2443	cyclictest	2851291	-21	kworker/0:0+events	20:49:19	0
2827121	99	2449	12,2433	cyclictest	2908706	-21	kworker/0:0+events	23:30:42	0
2827135	99	2448	12,2433	cyclictest	2857661	-21	kworker/3:2+events	20:45:13	3
2827129	99	2440	12,2424	cyclictest	2870336	-21	kworker/2:0+events	21:48:09	2
2827121	99	2427	12,2411	cyclictest	2918761	-21	kworker/0:2+events	00:09:09	0
2827135	99	2421	10,2408	cyclictest	2886732	-21	kworker/3:2+events	22:17:49	3
2827121	99	2420	12,2405	cyclictest	2910593	-21	kworker/0:1+events	23:50:20	0
2827129	99	2417	11,2403	cyclictest	2880509	-21	kworker/2:2+events	21:56:06	2
2827129	99	2412	11,2398	cyclictest	2843657	-21	kworker/2:1+events	20:05:16	2
2827129	99	2411	11,2397	cyclictest	2825099	-21	kworker/2:1+events	19:15:13	2
2827121	99	2411	9,2398	cyclictest	2900821	-21	kworker/0:2+events	23:02:07	0
2827129	99	2408	12,2393	cyclictest	2835161	-21	kworker/2:2+events	19:39:31	2
2827129	99	2408	12,2393	cyclictest	2825099	-21	kworker/2:1+events	19:10:19	2
2827124	99	2407	11,2393	cyclictest	2849787	-21	kworker/1:2+events	20:18:13	1
2827135	99	2405	10,2391	cyclictest	2859287	-21	kworker/3:1+events	20:56:03	3
2827129	99	2402	12,2387	cyclictest	2835161	-21	kworker/2:2+events	19:57:21	2
2827129	99	2400	11,2386	cyclictest	2920325	-21	kworker/2:1+events	00:20:31	2
2827129	99	2400	11,2385	cyclictest	2875394	-21	kworker/2:2+events	21:42:32	2
2827121	99	2400	9,2387	cyclictest	2841758	-21	kworker/0:1+events	20:05:37	0
2827129	99	2399	12,2383	cyclictest	2840192	-21	kworker/2:1+events	19:52:27	2
2827129	99	2398	11,2383	cyclictest	2900790	-21	kworker/2:0+events	23:00:16	2
2827129	99	2397	12,2381	cyclictest	2896078	-21	kworker/2:1+events	22:51:24	2
2827129	99	2395	12,2379	cyclictest	2870336	-21	kworker/2:0+events	21:23:54	2
2827121	99	2395	12,2379	cyclictest	2852952	-21	kworker/0:1+events	20:32:13	0
2827129	99	2393	12,2378	cyclictest	2893129	-21	kworker/2:0+events	22:44:32	2
2827129	99	2392	12,2378	cyclictest	2910989	-21	kworker/2:0+events	23:35:34	2
2827129	99	2392	12,2376	cyclictest	2889805	-21	kworker/2:2+events	22:24:57	2
2827129	99	2392	11,2377	cyclictest	2825099	-21	kworker/2:1+events	19:25:29	2
2827135	99	2390	12,2374	cyclictest	2880452	-21	kworker/3:1+events	22:12:51	3
2827129	99	2390	12,2375	cyclictest	2896078	-21	kworker/2:1+events	22:49:31	2
2827129	99	2390	12,2374	cyclictest	2883465	-21	kworker/2:1+events	22:15:32	2
2827121	99	2376	11,2361	cyclictest	2828415	-21	kworker/0:2+events	19:48:12	0
2827121	99	2375	10,2362	cyclictest	2877024	-21	kworker/0:2+events	21:59:56	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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