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 Fri Apr 03, 2026 00:44:16)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3895603	99	2914	6,2904	cyclictest	3995601	-21	kworker/1:1+events	00:20:18	1
3895601	99	2847	14,2830	cyclictest	3900403	-21	kworker/0:1+events	19:35:00	0
3895603	99	2846	14,2828	cyclictest	3977780	-21	kworker/1:0+events	23:25:15	1
3895611	99	2815	13,2798	cyclictest	3998958	-21	kworker/3:0+events	00:35:00	3
3895603	99	2769	13,2753	cyclictest	3937146	-21	kworker/1:2+events	21:20:01	1
3895601	99	2730	13,2712	cyclictest	3918082	-21	kworker/0:1+events	20:20:11	0
3895601	99	2679	13,2662	cyclictest	3977841	-21	kworker/0:0+events	23:30:10	0
3895603	99	2670	13,2653	cyclictest	3898839	-21	kworker/1:2+events	19:20:10	1
3895606	99	2656	12,2641	cyclictest	3922742	-21	kworker/2:2+events	20:35:15	2
3895603	99	2611	7,2600	cyclictest	3987853	-21	kworker/1:0+events	00:00:19	1
3895603	99	2595	13,2579	cyclictest	3989839	-21	kworker/1:2+events	00:05:19	1
3895611	99	2570	12,2554	cyclictest	3966511	-21	kworker/3:1+events	23:09:11	3
3895603	99	2548	11,2534	cyclictest	3919468	-21	kworker/1:0+events	20:21:20	1
3895603	99	2542	12,2527	cyclictest	3963324	-21	kworker/1:2+events	22:53:01	1
3895601	99	2538	10,2524	cyclictest	3895499	-21	kworker/0:2+events	19:19:48	0
3895603	99	2534	12,2518	cyclictest	3938797	-21	kworker/1:1+events	21:49:16	1
3895603	99	2520	11,2506	cyclictest	3964989	-21	kworker/1:0+events	22:47:41	1
3895603	99	2514	12,2498	cyclictest	3950652	-21	kworker/1:1+events	22:08:52	1
3895601	99	2506	12,2492	cyclictest	3948627	-21	kworker/0:0+events	22:20:21	0
3895601	99	2500	9,2487	cyclictest	3907161	-21	kworker/0:0+events	20:02:21	0
3895603	99	2498	11,2486	cyclictest	3922807	-21	kworker/1:0+events	21:24:56	1
3895603	99	2497	12,2481	cyclictest	3929402	-21	kworker/1:1+events	20:57:54	1
3895611	99	2496	12,2482	cyclictest	3904086	-21	kworker/3:2+events	19:40:03	3
3895603	99	2496	12,2480	cyclictest	3961656	-21	kworker/1:1+events	22:42:19	1
3895601	99	2496	12,2481	cyclictest	4000496	-21	kworker/0:1+events	00:39:55	0
3895611	99	2495	12,2480	cyclictest	3935330	-21	kworker/3:1+events	21:25:41	3
3895601	99	2493	12,2478	cyclictest	3945075	-21	kworker/0:2+events	21:46:39	0
3895601	99	2493	11,2479	cyclictest	3916480	-21	kworker/0:0+events	20:15:35	0
3895611	99	2492	12,2477	cyclictest	3968203	-21	kworker/3:2+events	22:54:34	3
3895606	99	2491	12,2477	cyclictest	3935572	-21	kworker/2:1+events	21:18:09	2
3895603	99	2491	12,2475	cyclictest	3964989	-21	kworker/1:0+events	23:00:45	1
3895601	99	2491	12,2476	cyclictest	3969601	-21	kworker/0:0+events	23:02:19	0
3895611	99	2490	12,2474	cyclictest	3919798	-21	kworker/3:1+events	20:29:03	3
3895601	99	2490	9,2478	cyclictest	3914880	-21	kworker/0:2+events	20:11:04	0
3895611	99	2489	12,2473	cyclictest	3953579	-21	kworker/3:1+events	22:07:41	3
3895606	99	2489	12,2475	cyclictest	3945253	-21	kworker/2:2+events	21:45:07	2
3895601	99	2489	12,2474	cyclictest	3984150	-21	kworker/0:2+events	23:50:49	0
3895601	99	2489	10,2476	cyclictest	3982149	-21	kworker/0:1+events	23:36:38	0
3895603	99	2488	11,2474	cyclictest	3946938	-21	kworker/1:0+events	22:02:42	1
3895611	99	2486	11,2473	cyclictest	3940218	-21	kworker/3:2+events	21:40:10	3
3895603	99	2486	12,2470	cyclictest	3910093	-21	kworker/1:1+events	20:06:06	1
3895601	99	2486	12,2471	cyclictest	3984150	-21	kworker/0:2+events	23:45:02	0
3895601	99	2486	12,2470	cyclictest	3927578	-21	kworker/0:0+events	20:51:34	0
3895603	99	2485	12,2469	cyclictest	3982580	-21	kworker/1:0+events	23:43:09	1
3895603	99	2485	12,2469	cyclictest	3938797	-21	kworker/1:1+events	21:32:33	1
3895601	99	2485	8,2473	cyclictest	3921347	-21	kworker/0:1+events	20:31:44	0
3895601	99	2485	12,2470	cyclictest	3963081	-21	kworker/0:2+events	22:48:04	0
3895611	99	2484	12,2469	cyclictest	3966511	-21	kworker/3:1+events	22:48:25	3
3895603	99	2484	12,2470	cyclictest	3895135	-21	kworker/1:0+events	19:15:13	1
3895603	99	2483	12,2467	cyclictest	3971170	-21	kworker/1:1+events	23:14:33	1
3895603	99	2481	11,2466	cyclictest	3943449	-21	kworker/1:2+events	21:36:42	1
3895601	99	2481	12,2466	cyclictest	3963081	-21	kworker/0:2+events	23:09:34	0
3895611	99	2480	12,2465	cyclictest	3930857	-21	kworker/3:1+events	21:03:39	3
3895611	99	2480	12,2465	cyclictest	3918184	-21	kworker/3:2+events	20:21:44	3
3895601	99	2480	12,2464	cyclictest	3977841	-21	kworker/0:0+events	23:28:18	0
3895611	99	2479	10,2466	cyclictest	3986314	-21	kworker/3:1+events	23:57:19	3
3895603	99	2479	12,2463	cyclictest	3922807	-21	kworker/1:0+events	20:48:53	1
3895603	99	2478	12,2462	cyclictest	3916627	-21	kworker/1:2+events	20:34:04	1
3895611	99	2476	12,2460	cyclictest	3994088	-21	kworker/3:2+events	00:15:44	3
3895601	99	2474	11,2459	cyclictest	3913283	-21	kworker/0:1+events	20:09:33	0
3895611	99	2473	11,2459	cyclictest	3986314	-21	kworker/3:1+events	00:06:28	3
3895611	99	2473	11,2458	cyclictest	3964648	-21	kworker/3:0+events	22:43:29	3
3895611	99	2472	12,2456	cyclictest	3942091	-21	kworker/3:0+events	21:47:02	3
3895601	99	2470	12,2455	cyclictest	3930767	-21	kworker/0:1+events	21:00:34	0
3895611	99	2469	12,2453	cyclictest	3982732	-21	kworker/3:2+events	23:40:30	3
3895611	99	2468	12,2453	cyclictest	3974968	-21	kworker/3:0+events	23:23:21	3
3895603	99	2465	12,2449	cyclictest	3948717	-21	kworker/1:2+events	21:58:07	1
3895603	99	2464	12,2448	cyclictest	3976127	-21	kworker/1:2+events	23:21:26	1
3895603	99	2462	12,2446	cyclictest	3998836	-21	kworker/1:1+events	00:32:22	1
3895601	99	2462	11,2447	cyclictest	3963081	-21	kworker/0:2+events	22:51:52	0
3895611	99	2459	14,2442	cyclictest	3927544	-21	kworker/3:1+events	20:48:32	3
3895601	99	2459	12,2443	cyclictest	3948627	-21	kworker/0:0+events	22:04:36	0
3895611	99	2458	9,2445	cyclictest	3913222	-21	kworker/3:1+events	20:06:54	3
3895601	99	2458	12,2442	cyclictest	3952212	-21	kworker/0:2+events	22:05:46	0
3895603	99	2457	12,2442	cyclictest	3921103	-21	kworker/1:1+events	20:26:43	1
3895603	99	2457	11,2444	cyclictest	3986099	-21	kworker/1:1+events	23:55:46	1
3895601	99	2456	12,2440	cyclictest	4000496	-21	kworker/0:1+events	00:34:37	0
3895611	99	2455	11,2441	cyclictest	3998958	-21	kworker/3:0+events	00:37:17	3
3895603	99	2455	12,2439	cyclictest	3943449	-21	kworker/1:2+events	21:41:16	1
3895603	99	2455	11,2440	cyclictest	3924562	-21	kworker/1:1+events	20:42:24	1
3895611	99	2454	11,2440	cyclictest	3898868	-21	kworker/3:0+events	19:30:50	3
3895601	99	2452	12,2437	cyclictest	3963081	-21	kworker/0:2+events	23:11:06	0
3895601	99	2452	12,2436	cyclictest	3900403	-21	kworker/0:1+events	19:41:11	0
3895603	99	2450	10,2436	cyclictest	3993997	-21	kworker/1:0+events	00:29:19	1
3895601	99	2449	9,2436	cyclictest	3936876	-21	kworker/0:0+events	21:20:46	0
3895601	99	2449	12,2434	cyclictest	3995572	-21	kworker/0:1+events	00:17:15	0
3895611	99	2447	11,2432	cyclictest	3995691	-21	kworker/3:1+events	00:23:36	3
3895601	99	2447	12,2432	cyclictest	3977841	-21	kworker/0:0+events	23:42:47	0
3895601	99	2446	9,2434	cyclictest	3972869	-21	kworker/0:1+events	23:18:44	0
3895611	99	2445	11,2430	cyclictest	3958588	-21	kworker/3:2+events	22:27:42	3
3895601	99	2445	12,2429	cyclictest	3972869	-21	kworker/0:1+events	23:20:17	0
3895611	99	2442	10,2429	cyclictest	3966511	-21	kworker/3:1+events	22:58:27	3
3895601	99	2442	11,2428	cyclictest	3992387	-21	kworker/0:0+events	00:14:33	0
3895611	99	2440	12,2424	cyclictest	3942091	-21	kworker/3:0+events	21:35:57	3
3895603	99	2440	12,2424	cyclictest	3916627	-21	kworker/1:2+events	20:37:08	1
3895603	99	2439	8,2427	cyclictest	3938797	-21	kworker/1:1+events	21:26:47	1
3895603	99	2434	10,2420	cyclictest	3908464	-21	kworker/1:0+events	19:49:53	1
3895603	99	2431	10,2417	cyclictest	3933845	-21	kworker/1:2+events	21:08:53	1
3895603	99	2423	11,2408	cyclictest	3953520	-21	kworker/1:2+events	22:11:54	1
3895611	99	2400	11,2386	cyclictest	3955218	-21	kworker/3:2+events	22:16:53	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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