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 Mon Jan 05, 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
2768759	99	5750	27,5719	cyclictest	2768501	-21	kworker/0:2+events	19:11:16	0
2768769	99	5722	18,5700	cyclictest	2759869	-21	kworker/3:1+events	19:11:38	3
2768762	99	3070	10,3055	cyclictest	2841023	-21	kworker/1:0+events	23:10:00	1
2768769	99	2773	13,2756	cyclictest	2840759	-21	kworker/3:1+events	22:55:17	3
2768769	99	2766	12,2750	cyclictest	2849482	-21	kworker/3:2+events	23:30:11	3
2768762	99	2763	13,2747	cyclictest	2805966	-21	kworker/1:1+events	21:45:16	1
2768759	99	2540	12,2524	cyclictest	2795916	-21	kworker/0:0+events	20:35:20	0
2768762	99	2488	10,2475	cyclictest	2812240	-21	kworker/1:0+events	21:25:17	1
2768762	99	2469	11,2455	cyclictest	2769796	-21	kworker/1:0+events	19:12:24	1
2768769	99	2437	12,2422	cyclictest	2846017	-21	kworker/3:0+events	23:20:18	3
2768766	99	2430	9,2418	cyclictest	2820161	-21	kworker/2:0+events	21:50:17	2
2768766	99	2390	12,2376	cyclictest	2836255	-21	kworker/2:1+events	23:15:01	2
2768759	99	2386	11,2372	cyclictest	2787892	-21	kworker/0:2+events	20:09:35	0
2768766	99	2315	12,2300	cyclictest	2812256	-21	kworker/2:2+events	21:30:21	2
2768762	99	2305	11,2291	cyclictest	2826683	-21	kworker/1:0+events	22:14:45	1
2768759	99	2301	11,2287	cyclictest	2799195	-21	kworker/0:1+events	20:45:29	0
2768762	99	2290	9,2277	cyclictest	2789556	-21	kworker/1:1+events	20:17:11	1
2768762	99	2283	10,2269	cyclictest	2810630	-21	kworker/1:2+events	21:20:16	1
2768759	99	2278	11,2264	cyclictest	2776882	-21	kworker/0:1+events	19:52:48	0
2768759	99	2274	7,2263	cyclictest	2816932	-21	kworker/0:0+events	21:55:16	0
2768759	99	2274	7,2263	cyclictest	2816932	-21	kworker/0:0+events	21:55:16	0
2768769	99	2266	11,2252	cyclictest	2853662	-21	kworker/3:1+events	23:39:40	3
2768759	99	2265	8,2254	cyclictest	2778543	-21	kworker/0:2+events	19:56:38	0
2768759	99	2262	11,2248	cyclictest	2826534	-21	kworker/0:1+events	22:10:34	0
2768759	99	2255	11,2242	cyclictest	2855350	-21	kworker/0:2+events	23:40:28	0
2768759	99	2228	11,2214	cyclictest	2865063	-21	kworker/0:2+events	00:10:57	0
2768769	99	2225	4,2218	cyclictest	2775579	-21	kworker/3:0+events	19:32:40	3
2768762	99	2204	11,2190	cyclictest	2873096	-21	kworker/1:0+events	00:35:14	1
2768762	99	2201	6,2192	cyclictest	2855533	-21	kworker/1:2+events	23:51:55	1
2768759	99	2199	10,2186	cyclictest	2778543	-21	kworker/0:2+events	19:42:31	0
2768759	99	2196	10,2183	cyclictest	2784578	-21	kworker/0:0+events	20:13:46	0
2768769	99	2185	11,2171	cyclictest	2789377	-21	kworker/3:2+events	20:20:15	3
2768759	99	2185	11,2171	cyclictest	2797572	-21	kworker/0:2+events	20:41:44	0
2768766	99	2169	5,2161	cyclictest	2800771	-21	kworker/2:2+events	20:55:26	2
2768759	99	2166	9,2153	cyclictest	2858671	-21	kworker/0:0+events	00:04:08	0
2768766	99	2161	9,2149	cyclictest	2846099	-21	kworker/2:0+events	23:21:26	2
2768766	99	2154	11,2140	cyclictest	2837878	-21	kworker/2:0+events	22:46:57	2
2768766	99	2154	10,2140	cyclictest	2865576	-21	kworker/2:0+events	00:13:12	2
2768766	99	2151	9,2139	cyclictest	2861815	-21	kworker/2:0+events	00:00:40	2
2768769	99	2150	9,2137	cyclictest	2859200	-21	kworker/3:2+events	23:57:17	3
2768766	99	2148	11,2134	cyclictest	2824667	-21	kworker/2:2+events	22:02:06	2
2768762	99	2146	9,2134	cyclictest	2865003	-21	kworker/1:0+events	00:18:33	1
2768762	99	2142	11,2128	cyclictest	2826683	-21	kworker/1:0+events	22:37:47	1
2768762	99	2138	9,2126	cyclictest	2805966	-21	kworker/1:1+events	21:13:27	1
2768766	99	2136	11,2122	cyclictest	2800771	-21	kworker/2:2+events	20:53:29	2
2768762	99	2132	9,2119	cyclictest	2805966	-21	kworker/1:1+events	21:19:09	1
2768762	99	2131	11,2116	cyclictest	2861849	-21	kworker/1:1+events	00:10:13	1
2768762	99	2122	11,2107	cyclictest	2826683	-21	kworker/1:0+events	22:31:16	1
2768769	99	2113	6,2104	cyclictest	2823221	-21	kworker/3:1+events	22:22:49	3
2768762	99	2113	10,2100	cyclictest	2841023	-21	kworker/1:0+events	23:13:06	1
2768762	99	2109	9,2097	cyclictest	2779981	-21	kworker/1:0+events	19:45:57	1
2768762	99	2109	10,2096	cyclictest	2771808	-21	kworker/1:1+events	19:23:50	1
2768762	99	2108	8,2097	cyclictest	2804296	-21	kworker/1:0+events	20:59:40	1
2768762	99	2103	5,2095	cyclictest	2850699	-21	kworker/1:0+events	23:41:57	1
2768759	99	2103	10,2090	cyclictest	2795916	-21	kworker/0:0+events	20:51:34	0
2768762	99	2101	9,2089	cyclictest	2832888	-21	kworker/1:1+events	22:29:44	1
2768759	99	2100	3,2094	cyclictest	2849134	-21	kworker/0:2+events	23:26:03	0
2768762	99	2099	7,2088	cyclictest	2771808	-21	kworker/1:1+events	19:27:18	1
2768762	99	2099	10,2085	cyclictest	2794113	-21	kworker/1:1+events	20:31:56	1
2768759	99	2099	9,2087	cyclictest	2784578	-21	kworker/0:0+events	20:03:27	0
2768762	99	2097	10,2084	cyclictest	2844147	-21	kworker/1:1+events	23:27:14	1
2768759	99	2097	9,2085	cyclictest	2824605	-21	kworker/0:2+events	22:09:48	0
2768762	99	2095	9,2083	cyclictest	2844147	-21	kworker/1:1+events	23:23:46	1
2768762	99	2095	10,2082	cyclictest	2784845	-21	kworker/1:1+events	20:00:27	1
2768759	99	2095	10,2082	cyclictest	2836040	-21	kworker/0:0+events	23:02:27	0
2768766	99	2094	10,2082	cyclictest	2778596	-21	kworker/2:1+events	19:45:10	2
2768769	99	2092	8,2080	cyclictest	2789377	-21	kworker/3:2+events	20:14:10	3
2768762	99	2092	8,2081	cyclictest	2805966	-21	kworker/1:1+events	21:39:34	1
2768759	99	2088	8,2078	cyclictest	2845870	-21	kworker/0:1+events	23:10:24	0
2768762	99	2084	10,2070	cyclictest	2781606	-21	kworker/1:2+events	19:52:26	1
2768766	99	2080	11,2066	cyclictest	2826594	-21	kworker/2:0+events	22:20:56	2
2768759	99	2078	10,2065	cyclictest	2871586	-21	kworker/0:1+events	00:38:17	0
2768762	99	2077	6,2068	cyclictest	2797634	-21	kworker/1:0+events	20:43:38	1
2768759	99	2077	8,2065	cyclictest	2800895	-21	kworker/0:2+events	21:05:24	0
2768762	99	2075	7,2065	cyclictest	2852327	-21	kworker/1:2+events	23:30:33	1
2768759	99	2075	9,2063	cyclictest	2855350	-21	kworker/0:2+events	23:52:41	0
2768769	99	2074	9,2062	cyclictest	2849482	-21	kworker/3:2+events	23:26:50	3
2768762	99	2074	9,2062	cyclictest	2848919	-21	kworker/1:2+events	23:18:51	1
2768762	99	2074	8,2063	cyclictest	2865003	-21	kworker/1:0+events	00:09:04	1
2768759	99	2074	9,2062	cyclictest	2795916	-21	kworker/0:0+events	20:33:48	0
2768759	99	2073	9,2061	cyclictest	2784578	-21	kworker/0:0+events	20:22:07	0
2768769	99	2072	10,2059	cyclictest	2805907	-21	kworker/3:1+events	21:16:04	3
2768759	99	2072	7,2063	cyclictest	2868298	-21	kworker/0:2+events	00:20:04	0
2768759	99	2072	4,2065	cyclictest	2800895	-21	kworker/0:2+events	21:42:36	0
2768769	99	2071	7,2061	cyclictest	2807598	-21	kworker/3:2+events	21:14:33	3
2768759	99	2071	9,2058	cyclictest	2829931	-21	kworker/0:1+events	22:23:12	0
2768769	99	2069	10,2056	cyclictest	2868548	-21	kworker/3:1+events	00:24:16	3
2768769	99	2069	10,2056	cyclictest	2857007	-21	kworker/3:0+events	23:50:24	3
2768769	99	2069	10,2056	cyclictest	2804221	-21	kworker/3:0+events	21:01:11	3
2768759	99	2069	5,2061	cyclictest	2852062	-21	kworker/0:0+events	23:37:43	0
2768759	99	2069	10,2056	cyclictest	2860333	-21	kworker/0:1+events	23:56:52	0
2768759	99	2069	10,2056	cyclictest	2818584	-21	kworker/0:1+events	21:48:46	0
2768759	99	2069	10,2056	cyclictest	2805730	-21	kworker/0:0+events	21:04:37	0
2768769	99	2068	5,2060	cyclictest	2866871	-21	kworker/3:0+events	00:31:49	3
2768769	99	2068	10,2055	cyclictest	2805907	-21	kworker/3:1+events	21:08:05	3
2768759	99	2067	8,2056	cyclictest	2800895	-21	kworker/0:2+events	21:35:41	0
2768759	99	2067	7,2057	cyclictest	2809380	-21	kworker/0:0+events	21:29:58	0
2768759	99	2067	4,2060	cyclictest	2829931	-21	kworker/0:1+events	22:26:39	0
2768759	99	2067	3,2061	cyclictest	2773583	-21	kworker/0:1+events	19:27:42	0
2768759	99	2067	10,2054	cyclictest	2855350	-21	kworker/0:2+events	23:47:45	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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