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 Tue Mar 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
1778262	99	2890	15,2870	cyclictest	1857355	-21	kworker/2:0+events	23:40:15	2
1778262	99	2840	13,2823	cyclictest	1822805	-21	kworker/2:1+events	21:35:17	2
1778264	99	2811	12,2794	cyclictest	1812048	-21	kworker/3:1+events	21:00:19	3
1778254	99	2798	13,2781	cyclictest	1839335	-21	kworker/0:0+events	22:25:18	0
1778264	99	2796	13,2780	cyclictest	1862109	-21	kworker/3:1+events	23:35:17	3
1778254	99	2754	13,2738	cyclictest	1807544	-21	kworker/0:1+events	20:45:24	0
1778264	99	2743	11,2728	cyclictest	1860415	-21	kworker/3:0+events	23:30:21	3
1778262	99	2718	13,2702	cyclictest	1756989	-21	kworker/2:0+events	19:25:00	2
1778258	99	2717	12,2701	cyclictest	1783328	-21	kworker/1:0+events	20:15:14	1
1778254	99	2711	13,2694	cyclictest	1841060	-21	kworker/0:2+events	22:30:14	0
1778254	99	2576	12,2560	cyclictest	1836071	-21	kworker/0:2+events	22:16:11	0
1778262	99	2547	12,2532	cyclictest	1799350	-21	kworker/2:0+events	20:23:35	2
1778264	99	2539	11,2524	cyclictest	1876558	-21	kworker/3:1+events	00:15:12	3
1778254	99	2537	12,2523	cyclictest	1812063	-21	kworker/0:2+events	21:05:13	0
1778262	99	2536	5,2529	cyclictest	1857355	-21	kworker/2:0+events	23:55:01	2
1778254	99	2521	12,2505	cyclictest	1876344	-21	kworker/0:2+events	00:19:47	0
1778262	99	2514	12,2498	cyclictest	1812006	-21	kworker/2:0+events	21:24:17	2
1778262	99	2510	12,2494	cyclictest	1850379	-21	kworker/2:1+events	22:51:52	2
1778264	99	2508	9,2497	cyclictest	1878490	-21	kworker/3:2+events	00:25:08	3
1778264	99	2506	12,2491	cyclictest	1876558	-21	kworker/3:1+events	00:20:11	3
1778262	99	2497	10,2484	cyclictest	1812006	-21	kworker/2:0+events	20:53:26	2
1778262	99	2489	12,2474	cyclictest	1857355	-21	kworker/2:0+events	23:16:38	2
1778262	99	2489	12,2473	cyclictest	1828175	-21	kworker/2:0+events	21:49:01	2
1778262	99	2488	12,2473	cyclictest	1876526	-21	kworker/2:0+events	00:16:21	2
1778262	99	2487	12,2472	cyclictest	1799350	-21	kworker/2:0+events	20:19:28	2
1778262	99	2485	12,2469	cyclictest	1794621	-21	kworker/2:2+events	20:07:17	2
1778258	99	2485	11,2470	cyclictest	1826552	-21	kworker/1:0+events	21:39:07	1
1778264	99	2483	12,2467	cyclictest	1799042	-21	kworker/3:1+events	20:16:46	3
1778262	99	2483	12,2468	cyclictest	1850379	-21	kworker/2:1+events	23:00:49	2
1778262	99	2483	12,2467	cyclictest	1837520	-21	kworker/2:0+events	22:13:05	2
1778258	99	2483	8,2471	cyclictest	1840961	-21	kworker/1:0+events	22:30:36	1
1778262	99	2482	12,2467	cyclictest	1857355	-21	kworker/2:0+events	23:45:33	2
1778262	99	2482	11,2468	cyclictest	1871550	-21	kworker/2:1+events	00:01:09	2
1778264	99	2479	12,2464	cyclictest	1874924	-21	kworker/3:2+events	00:14:04	3
1778258	99	2479	12,2464	cyclictest	1783328	-21	kworker/1:0+events	19:48:13	1
1778258	99	2479	10,2465	cyclictest	1807439	-21	kworker/1:1+events	20:41:35	1
1778264	99	2476	12,2460	cyclictest	1818812	-21	kworker/3:2+events	21:18:12	3
1778264	99	2473	10,2460	cyclictest	1771441	-21	kworker/3:1+events	19:18:33	3
1778262	99	2461	12,2445	cyclictest	1861776	-21	kworker/2:2+events	23:30:45	2
1778262	99	2460	12,2444	cyclictest	1845775	-21	kworker/2:1+events	22:44:12	2
1778264	99	2455	8,2444	cyclictest	1883107	-21	kworker/3:0+events	00:36:37	3
1778262	99	2455	12,2439	cyclictest	1850379	-21	kworker/2:1+events	22:57:06	2
1778262	99	2455	11,2441	cyclictest	1815525	-21	kworker/2:1+events	21:05:35	2
1778264	99	2454	12,2438	cyclictest	1787846	-21	kworker/3:1+events	19:40:11	3
1778258	99	2454	11,2440	cyclictest	1794514	-21	kworker/1:1+events	20:00:48	1
1778262	99	2452	12,2438	cyclictest	1791126	-21	kworker/2:0+events	19:55:01	2
1778258	99	2452	12,2437	cyclictest	1874838	-21	kworker/1:0+events	00:10:12	1
1778258	99	2450	12,2434	cyclictest	1840961	-21	kworker/1:0+events	22:25:42	1
1778254	99	2450	12,2435	cyclictest	1819978	-21	kworker/0:1+events	21:17:50	0
1778254	99	2448	12,2432	cyclictest	1826581	-21	kworker/0:0+events	21:39:54	0
1778254	99	2447	11,2432	cyclictest	1832675	-21	kworker/0:0+events	22:01:17	0
1778264	99	2442	12,2427	cyclictest	1789766	-21	kworker/3:2+events	19:48:34	3
1778264	99	2441	12,2426	cyclictest	1824946	-21	kworker/3:1+events	21:54:43	3
1778254	99	2441	11,2426	cyclictest	1800714	-21	kworker/0:2+events	20:40:25	0
1778264	99	2437	11,2423	cyclictest	1821655	-21	kworker/3:0+events	21:31:51	3
1778254	99	2437	11,2423	cyclictest	1868379	-21	kworker/0:0+events	23:48:35	0
1778262	99	2435	12,2419	cyclictest	1834316	-21	kworker/2:2+events	22:39:22	2
1778264	99	2431	12,2415	cyclictest	1848871	-21	kworker/3:1+events	22:55:14	3
1778264	99	2426	12,2410	cyclictest	1868349	-21	kworker/3:0+events	00:05:20	3
1778254	99	2425	12,2409	cyclictest	1812063	-21	kworker/0:2+events	20:58:47	0
1778264	99	2423	11,2408	cyclictest	1855166	-21	kworker/3:1+events	23:07:00	3
1778264	99	2423	10,2409	cyclictest	1836132	-21	kworker/3:2+events	22:13:30	3
1778264	99	2422	12,2407	cyclictest	1857035	-21	kworker/3:2+events	23:19:41	3
1778264	99	2421	12,2406	cyclictest	1850967	-21	kworker/3:0+events	23:02:24	3
1778264	99	2421	12,2406	cyclictest	1824946	-21	kworker/3:1+events	21:36:27	3
1778264	99	2421	11,2407	cyclictest	1817182	-21	kworker/3:0+events	21:13:36	3
1778264	99	2420	12,2405	cyclictest	1837791	-21	kworker/3:0+events	22:47:38	3
1778264	99	2420	12,2405	cyclictest	1795353	-21	kworker/3:2+events	20:10:42	3
1778254	99	2420	12,2404	cyclictest	1850557	-21	kworker/0:2+events	23:09:18	0
1778254	99	2420	12,2404	cyclictest	1812063	-21	kworker/0:2+events	21:28:28	0
1778254	99	2420	12,2404	cyclictest	1786306	-21	kworker/0:0+events	19:37:53	0
1778254	99	2420	11,2406	cyclictest	1870013	-21	kworker/0:2+events	00:02:40	0
1778264	99	2419	11,2405	cyclictest	1832802	-21	kworker/3:0+events	22:07:47	3
1778258	99	2419	11,2405	cyclictest	1852150	-21	kworker/1:0+events	23:29:58	1
1778254	99	2419	12,2404	cyclictest	1852237	-21	kworker/0:0+events	23:11:59	0
1778264	99	2418	11,2404	cyclictest	1812048	-21	kworker/3:1+events	21:20:52	3
1778254	99	2418	12,2402	cyclictest	1881563	-21	kworker/0:1+events	00:37:22	0
1778254	99	2418	11,2402	cyclictest	1788244	-21	kworker/0:1+events	19:47:05	0
1778264	99	2417	12,2402	cyclictest	1805299	-21	kworker/3:1+events	20:43:28	3
1778254	99	2417	12,2401	cyclictest	1821807	-21	kworker/0:0+events	21:31:29	0
1778254	99	2416	12,2400	cyclictest	1878395	-21	kworker/0:0+events	00:33:11	0
1778264	99	2413	12,2397	cyclictest	1800744	-21	kworker/3:2+events	20:22:49	3
1778264	99	2412	12,2396	cyclictest	1800744	-21	kworker/3:2+events	20:35:02	3
1778264	99	2410	12,2395	cyclictest	1868349	-21	kworker/3:0+events	23:56:30	3
1778254	99	2410	12,2394	cyclictest	1871611	-21	kworker/0:0+events	00:09:49	0
1778254	99	2410	10,2396	cyclictest	1839335	-21	kworker/0:0+events	22:36:19	0
1778264	99	2409	11,2395	cyclictest	1797412	-21	kworker/3:0+events	20:06:53	3
1778254	99	2407	12,2392	cyclictest	1792693	-21	kworker/0:0+events	20:07:39	0
1778258	99	2400	9,2387	cyclictest	1807439	-21	kworker/1:1+events	20:51:10	1
1778254	99	2400	12,2385	cyclictest	1845407	-21	kworker/0:1+events	22:47:17	0
1778258	99	2399	12,2383	cyclictest	1846970	-21	kworker/1:2+events	22:58:13	1
1778258	99	2398	12,2384	cyclictest	1883379	-21	kworker/1:0+events	00:35:05	1
1778258	99	2398	12,2383	cyclictest	1829777	-21	kworker/1:1+events	21:54:20	1
1778258	99	2398	10,2385	cyclictest	1776174	-21	kworker/1:1+events	19:30:01	1
1778258	99	2397	12,2383	cyclictest	1820330	-21	kworker/1:2+events	21:25:02	1
1778258	99	2397	12,2381	cyclictest	1846970	-21	kworker/1:2+events	22:46:08	1
1778264	99	2396	12,2380	cyclictest	1848871	-21	kworker/3:1+events	22:53:22	3
1778258	99	2395	12,2380	cyclictest	1813776	-21	kworker/1:2+events	21:04:30	1
1778258	99	2395	12,2379	cyclictest	1873204	-21	kworker/1:1+events	00:09:27	1
1778258	99	2394	11,2380	cyclictest	1852150	-21	kworker/1:0+events	23:37:55	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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