OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #3, slot #4

Click here to display the system's profile data or here to proceed to next system.

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

Characteristics of the 100 highest latencies:

System rack3slot4.osadl.org (updated Mon Jan 12, 2026 00:46:53)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1056129	2	2383	2374,4	sleep5	0	-21	swapper/5	19:06:38	5
1056535	99	154	54,67	cyclictest	1173258	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:11:56	0
1056535	99	154	54,67	cyclictest	1173258	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:11:55	0
1056535	99	129	93,28	cyclictest	1166649	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:26:57	0
1056535	99	127	99,24	cyclictest	210	-21	kswapd0	22:55:00	0
1056535	99	126	69,41	cyclictest	1295495	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:31:16	0
1056535	99	126	69,41	cyclictest	1295495	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:31:16	0
1056554	99	125	120,2	cyclictest	0	-21	swapper/4	23:15:08	4
1056535	99	120	93,23	cyclictest	210	-21	kswapd0	23:15:08	0
1056535	99	119	11,91	cyclictest	13	-21	ksoftirqd/0	23:45:44	0
1056535	99	118	51,59	cyclictest	1166649	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:07:52	0
1056547	99	116	93,9	cyclictest	1256458	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	23:25:26	3
1056535	99	115	29,72	cyclictest	689	50	irq/527-eth0-Tx	23:32:36	0
1056535	99	115	29,72	cyclictest	689	50	irq/527-eth0-Tx	23:32:35	0
1056535	99	114	86,24	cyclictest	210	-21	kswapd0	23:05:26	0
1056535	99	113	62,35	cyclictest	691	50	irq/529-eth0-Tx	21:30:12	0
1056535	99	112	68,34	cyclictest	691	50	irq/529-eth0-Tx	21:45:12	0
1056535	99	112	64,39	cyclictest	0	-21	swapper/0	20:05:24	0
1056535	99	110	28,42	cyclictest	0	-21	swapper/0	22:18:58	0
1056535	99	110	28,42	cyclictest	0	-21	swapper/0	22:18:58	0
1056535	99	109	44,14	cyclictest	13	-21	ksoftirqd/0	23:50:45	0
1056535	99	108	39,15	cyclictest	13	-21	ksoftirqd/0	22:40:16	0
1056535	99	107	74,25	cyclictest	1056259	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:10:24	0
1056535	99	107	74,25	cyclictest	1056259	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:10:24	0
1056535	99	107	59,39	cyclictest	0	-21	swapper/0	19:50:24	0
1056535	99	106	23,6	cyclictest	13	-21	ksoftirqd/0	23:30:02	0
1056543	99	105	91,7	cyclictest	1155183	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:56:52	2
1056535	99	105	37,15	cyclictest	690	50	irq/528-eth0-Tx	00:20:00	0
1056535	99	105	37,15	cyclictest	690	50	irq/528-eth0-Tx	00:20:00	0
1056535	99	105	1,85	cyclictest	13	-21	ksoftirqd/0	23:55:43	0
1056535	99	104	72,25	cyclictest	1166649	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:36:57	0
1056535	99	103	64,23	cyclictest	1289397	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:43:13	0
1056535	99	103	5,50	cyclictest	0	-21	swapper/0	22:00:39	0
1056535	99	103	36,13	cyclictest	0	-21	swapper/0	00:05:40	0
1056535	99	102	6,48	cyclictest	13	-21	ksoftirqd/0	00:35:45	0
1056535	99	102	6,48	cyclictest	13	-21	ksoftirqd/0	00:35:45	0
1056535	99	102	35,42	cyclictest	0	-21	swapper/0	23:35:36	0
1056535	99	102	35,42	cyclictest	0	-21	swapper/0	23:35:36	0
1056535	99	101	69,23	cyclictest	1100873	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:22:23	0
1056535	99	101	68,25	cyclictest	1056259	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:18:11	0
1056535	99	101	15,47	cyclictest	0	-21	swapper/0	22:30:49	0
1056535	99	101	1,51	cyclictest	0	-21	swapper/0	21:35:39	0
1056547	99	100	85,8	cyclictest	1136779	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:41:48	3
1056547	99	99	85,7	cyclictest	1310627	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:03:22	3
1056535	99	99	51,39	cyclictest	1245344	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:10:58	0
1056535	99	99	49,29	cyclictest	689	50	irq/527-eth0-Tx	21:15:26	0
1056535	99	99	24,26	cyclictest	0	-21	swapper/0	22:55:31	0
1056535	99	99	24,26	cyclictest	0	-21	swapper/0	22:55:30	0
1056554	99	97	82,8	cyclictest	1108380	-21	diskmemload-4	21:50:23	4
1056547	99	97	83,7	cyclictest	1237171	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:23:12	3
1056547	99	97	77,7	cyclictest	1230351	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:57:02	3
1056547	99	97	77,7	cyclictest	1230351	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:57:02	3
1056543	99	97	86,7	cyclictest	210	-21	kswapd0	23:55:27	2
1056535	99	97	2,57	cyclictest	1101027	-21	latency_hist	21:00:01	0
1056535	99	97	18,26	cyclictest	13	-21	ksoftirqd/0	00:11:26	0
1056547	99	96	74,8	cyclictest	1118059	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:35:49	3
1056543	99	96	83,6	cyclictest	1256458	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	23:27:10	2
1056543	99	95	85,6	cyclictest	210	-21	kswapd0	22:45:14	2
1056535	99	95	70,16	cyclictest	1130514	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:53:51	0
1056535	99	95	60,32	cyclictest	1118059	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:58:27	0
1056535	99	95	55,30	cyclictest	1096874	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:11:21	0
1056535	99	95	29,41	cyclictest	0	-21	swapper/0	00:29:02	0
1056535	99	95	29,41	cyclictest	0	-21	swapper/0	00:29:01	0
1214451	2	94	0,5	sleep2	30	-21	ksoftirqd/2	22:40:42	2
1056535	99	94	2,8	cyclictest	1219696	-21	cat	22:45:27	0
1056547	99	93	78,7	cyclictest	1118059	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:05:32	3
1056535	99	93	67,17	cyclictest	1256458	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	23:21:14	0
1056535	99	93	61,24	cyclictest	1092872	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:40:15	0
1056535	99	92	64,24	cyclictest	1130514	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:44:51	0
1056543	99	91	61,7	cyclictest	1230351	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:24:28	2
1056535	99	91	61,22	cyclictest	1094759	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	20:49:14	0
1056543	99	90	75,8	cyclictest	1173258	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:15:19	2
1056543	99	90	75,8	cyclictest	1173258	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:15:18	2
1056535	99	90	54,15	cyclictest	1100873	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:25:15	0
1056535	99	90	54,15	cyclictest	1100873	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:25:15	0
1056535	99	89	57,24	cyclictest	1103063	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:07:00	0
1056535	99	89	56,24	cyclictest	1084517	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:25:34	0
1056558	99	88	81,3	cyclictest	0	-21	swapper/5	21:50:12	5
1056547	99	88	74,7	cyclictest	1295495	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:37:34	3
1056547	99	88	74,7	cyclictest	1295495	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:37:34	3
1056554	99	87	78,5	cyclictest	1188635	-21	ssh	22:20:12	4
1056554	99	87	78,5	cyclictest	1188635	-21	ssh	22:20:11	4
1056535	99	87	66,17	cyclictest	1237171	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:00:33	0
1056535	99	87	51,16	cyclictest	1090798	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:35:14	0
1056547	99	86	54,11	cyclictest	1173258	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:16:33	3
1056547	99	86	54,11	cyclictest	1173258	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:16:32	3
1056543	99	86	72,7	cyclictest	1118059	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:36:47	2
1056547	99	85	70,8	cyclictest	1070785	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:05:33	3
1056547	99	84	72,8	cyclictest	1147069	-21	bingrep	21:45:26	3
1056547	99	84	53,16	cyclictest	1230351	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:15:05	3
1056543	99	84	70,7	cyclictest	1280655	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:53:11	2
1056540	99	84	55,10	cyclictest	1124126	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:30:28	1
1056535	99	84	52,24	cyclictest	1301846	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:20:39	0
1056535	99	84	52,24	cyclictest	1301846	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:20:38	0
1055449	2	84	54,20	sleep4	0	-21	swapper/4	19:05:30	4
1056547	99	83	71,6	cyclictest	1068482	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:00:39	3
1056547	99	83	71,6	cyclictest	1068482	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:00:39	3
1056540	99	83	74,6	cyclictest	210	-21	kswapd0	23:50:25	1
1056535	99	83	43,37	cyclictest	1068482	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:00:27	0
1056535	99	83	43,37	cyclictest	1068482	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:00:27	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17