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 Apr 06, 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
1129484	99	2984	11,2968	cyclictest	1169976	-21	kworker/3:2+events	21:15:15	3
1129469	99	2871	13,2852	cyclictest	1234166	-21	kworker/0:1+events	00:35:13	0
1129479	99	2821	13,2804	cyclictest	1211199	-21	kworker/2:2+events	23:25:17	2
1129473	99	2805	13,2788	cyclictest	1160589	-21	kworker/1:1+events	21:07:19	1
1129469	99	2805	13,2787	cyclictest	1222923	-21	kworker/0:0+events	00:00:11	0
1129479	99	2801	14,2782	cyclictest	1143962	-21	kworker/2:0+events	19:55:18	2
1129469	99	2786	12,2771	cyclictest	1225851	-21	kworker/0:2+events	00:15:00	0
1129484	99	2769	13,2752	cyclictest	1177751	-21	kworker/3:2+events	21:40:16	3
1129479	99	2730	13,2714	cyclictest	1137594	-21	kworker/2:2+events	19:49:59	2
1129473	99	2730	12,2714	cyclictest	1214446	-21	kworker/1:0+events	23:38:11	1
1129473	99	2695	12,2680	cyclictest	1196943	-21	kworker/1:1+events	22:40:12	1
1129473	99	2669	10,2655	cyclictest	1219356	-21	kworker/1:0+events	23:50:17	1
1129473	99	2610	12,2594	cyclictest	1227334	-21	kworker/1:2+events	00:12:17	1
1129473	99	2580	12,2565	cyclictest	1219356	-21	kworker/1:0+events	00:09:35	1
1129479	99	2573	12,2557	cyclictest	1132653	-21	kworker/2:1+events	19:30:13	2
1129469	99	2569	12,2553	cyclictest	1172959	-21	kworker/0:1+events	22:00:22	0
1129473	99	2564	12,2548	cyclictest	1190572	-21	kworker/1:0+events	22:34:35	1
1129469	99	2529	11,2515	cyclictest	1196911	-21	kworker/0:0+events	22:40:34	0
1129473	99	2521	10,2507	cyclictest	1153518	-21	kworker/1:2+events	20:32:07	1
1129484	99	2520	12,2505	cyclictest	1199620	-21	kworker/3:2+events	22:51:07	3
1129469	99	2520	12,2504	cyclictest	1160088	-21	kworker/0:2+events	20:58:36	0
1129473	99	2510	11,2496	cyclictest	1153518	-21	kworker/1:2+events	20:27:35	1
1129469	99	2509	9,2499	cyclictest	1227521	-21	kworker/0:0+events	00:16:07	0
1129473	99	2496	12,2480	cyclictest	1148964	-21	kworker/1:0+events	20:20:20	1
1129473	99	2496	11,2482	cyclictest	1227334	-21	kworker/1:2+events	00:27:10	1
1129473	99	2495	12,2480	cyclictest	1196943	-21	kworker/1:1+events	22:50:20	1
1129473	99	2495	12,2479	cyclictest	1137303	-21	kworker/1:0+events	19:50:22	1
1129473	99	2493	12,2477	cyclictest	1216080	-21	kworker/1:1+events	23:43:50	1
1129473	99	2493	12,2477	cyclictest	1160589	-21	kworker/1:1+events	20:48:44	1
1129473	99	2493	12,2477	cyclictest	1134336	-21	kworker/1:2+events	19:38:57	1
1129473	99	2491	8,2479	cyclictest	1217728	-21	kworker/1:2+events	23:55:13	1
1129473	99	2491	10,2477	cyclictest	1160589	-21	kworker/1:1+events	20:53:38	1
1129473	99	2490	11,2475	cyclictest	1187310	-21	kworker/1:2+events	22:11:22	1
1129473	99	2489	12,2474	cyclictest	1144046	-21	kworker/1:1+events	19:58:22	1
1129473	99	2488	11,2473	cyclictest	1167988	-21	kworker/1:0+events	21:40:39	1
1129484	99	2486	12,2471	cyclictest	1179439	-21	kworker/3:1+events	21:54:43	3
1129479	99	2486	11,2471	cyclictest	1190270	-21	kworker/2:2+events	22:21:35	2
1129473	99	2486	14,2469	cyclictest	1178019	-21	kworker/1:1+events	22:19:39	1
1129473	99	2484	10,2470	cyclictest	1166366	-21	kworker/1:2+events	21:02:26	1
1129469	99	2480	11,2465	cyclictest	1217550	-21	kworker/0:1+events	23:52:11	0
1129473	99	2479	10,2466	cyclictest	1160589	-21	kworker/1:1+events	21:11:49	1
1129473	99	2478	12,2462	cyclictest	1144046	-21	kworker/1:1+events	20:37:26	1
1129473	99	2477	10,2463	cyclictest	1144046	-21	kworker/1:1+events	20:13:57	1
1129479	99	2476	9,2464	cyclictest	1166393	-21	kworker/2:1+events	21:08:26	2
1129479	99	2475	5,2466	cyclictest	1204762	-21	kworker/2:0+events	23:02:09	2
1129479	99	2470	7,2460	cyclictest	1166393	-21	kworker/2:1+events	21:03:11	2
1129473	99	2470	12,2454	cyclictest	1202193	-21	kworker/1:2+events	23:01:21	1
1129469	99	2470	12,2454	cyclictest	1172959	-21	kworker/0:1+events	21:57:20	0
1129479	99	2469	14,2452	cyclictest	1174786	-21	kworker/2:2+events	21:33:26	2
1129473	99	2469	12,2453	cyclictest	1227334	-21	kworker/1:2+events	00:34:05	1
1129469	99	2469	12,2453	cyclictest	1160088	-21	kworker/0:2+events	21:05:47	0
1129473	99	2463	12,2448	cyclictest	1227334	-21	kworker/1:2+events	00:24:51	1
1129469	99	2460	12,2445	cyclictest	1209777	-21	kworker/0:0+events	23:24:56	0
1129469	99	2460	12,2445	cyclictest	1187097	-21	kworker/0:0+events	22:18:32	0
1129469	99	2460	12,2444	cyclictest	1184385	-21	kworker/0:2+events	22:10:37	0
1129469	99	2455	12,2439	cyclictest	1160088	-21	kworker/0:2+events	21:03:54	0
1129484	99	2454	12,2438	cyclictest	1181040	-21	kworker/3:0+events	21:49:46	3
1129479	99	2453	12,2438	cyclictest	1191929	-21	kworker/2:1+events	22:28:25	2
1129473	99	2452	12,2437	cyclictest	1160589	-21	kworker/1:1+events	20:55:57	1
1129479	99	2451	12,2435	cyclictest	1182493	-21	kworker/2:0+events	21:59:36	2
1129469	99	2451	12,2435	cyclictest	1172959	-21	kworker/0:1+events	21:30:22	0
1129469	99	2451	12,2435	cyclictest	1150386	-21	kworker/0:2+events	20:29:28	0
1129473	99	2450	12,2435	cyclictest	1178019	-21	kworker/1:1+events	22:25:21	1
1129469	99	2450	12,2435	cyclictest	1217550	-21	kworker/0:1+events	23:46:55	0
1129469	99	2450	12,2435	cyclictest	1142545	-21	kworker/0:1+events	19:49:39	0
1129469	99	2449	12,2434	cyclictest	1153697	-21	kworker/0:0+events	20:41:36	0
1129484	99	2448	12,2432	cyclictest	1155271	-21	kworker/3:0+events	20:50:14	3
1129469	99	2448	10,2435	cyclictest	1167959	-21	kworker/0:0+events	21:13:19	0
1129469	99	2446	12,2430	cyclictest	1124312	-21	kworker/0:2+events	19:20:22	0
1129484	99	2445	11,2431	cyclictest	1207964	-21	kworker/3:2+events	23:16:54	3
1129469	99	2445	12,2430	cyclictest	1169903	-21	kworker/0:2+events	21:25:29	0
1129469	99	2445	12,2429	cyclictest	1191958	-21	kworker/0:2+events	22:30:44	0
1129469	99	2445	10,2432	cyclictest	1191958	-21	kworker/0:2+events	22:38:43	0
1129484	99	2444	11,2431	cyclictest	1229543	-21	kworker/3:2+events	00:25:15	3
1129469	99	2443	10,2430	cyclictest	1214304	-21	kworker/0:1+events	23:34:00	0
1129469	99	2442	6,2432	cyclictest	1220751	-21	kworker/0:2+events	23:57:05	0
1129469	99	2441	12,2425	cyclictest	1179381	-21	kworker/0:0+events	21:47:06	0
1129469	99	2441	11,2427	cyclictest	1172959	-21	kworker/0:1+events	21:44:48	0
1129484	99	2439	11,2425	cyclictest	1179439	-21	kworker/3:1+events	21:56:56	3
1129469	99	2439	12,2424	cyclictest	1198643	-21	kworker/0:1+events	22:47:21	0
1129484	99	2438	12,2423	cyclictest	1185593	-21	kworker/3:0+events	22:09:02	3
1129469	99	2437	12,2421	cyclictest	1169903	-21	kworker/0:2+events	21:17:09	0
1129484	99	2435	9,2423	cyclictest	1160005	-21	kworker/3:1+events	20:46:28	3
1129484	99	2433	12,2418	cyclictest	1142682	-21	kworker/3:3+events	19:57:13	3
1129484	99	2431	12,2415	cyclictest	1149010	-21	kworker/3:2+events	20:10:52	3
1129484	99	2431	10,2418	cyclictest	1145559	-21	kworker/3:1+events	20:01:42	3
1129469	99	2431	12,2416	cyclictest	1144137	-21	kworker/0:0+events	20:00:15	0
1129479	99	2430	11,2415	cyclictest	1229004	-21	kworker/2:1+events	00:32:09	2
1129484	99	2429	12,2413	cyclictest	1153550	-21	kworker/3:1+events	20:29:51	3
1129484	99	2429	10,2416	cyclictest	1134365	-21	kworker/3:0+events	19:47:02	3
1129473	99	2429	12,2414	cyclictest	1167988	-21	kworker/1:0+events	21:16:22	1
1129469	99	2429	12,2413	cyclictest	1144137	-21	kworker/0:0+events	20:08:12	0
1129484	99	2427	12,2411	cyclictest	1203262	-21	kworker/3:1+events	23:06:19	3
1129484	99	2426	12,2411	cyclictest	1166508	-21	kworker/3:0+events	21:04:16	3
1129484	99	2426	11,2412	cyclictest	1160005	-21	kworker/3:1+events	20:43:28	3
1129473	99	2426	12,2411	cyclictest	1209837	-21	kworker/1:1+events	23:26:03	1
1129484	99	2425	12,2409	cyclictest	1187220	-21	kworker/3:2+events	22:19:16	3
1129484	99	2424	12,2409	cyclictest	1192046	-21	kworker/3:1+events	22:27:39	3
1129484	99	2423	11,2409	cyclictest	1203262	-21	kworker/3:1+events	23:02:29	3
1129484	99	2420	11,2406	cyclictest	1220633	-21	kworker/3:2+events	23:58:39	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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