OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 Sun Apr 26, 2026 12:46:38)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2111225	2	1201	1176,16	sleep4	0	-21	swapper/4	07:05:39	4
2112171	99	176	118,38	cyclictest	2314351	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:15:05	0
2112171	99	140	67,37	cyclictest	2323780	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:30:44	0
2112171	99	140	67,37	cyclictest	2323780	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:30:44	0
2112175	99	139	125,7	cyclictest	2164986	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:39:39	1
2112171	99	138	114,17	cyclictest	2217392	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:14:46	0
2112178	99	135	121,7	cyclictest	2413898	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:30:19	2
2112193	99	132	126,3	cyclictest	0	-21	swapper/5	10:14:46	5
2112175	99	132	118,7	cyclictest	2193681	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:29:48	1
2112175	99	118	105,7	cyclictest	2224920	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:09:45	1
2112175	99	118	105,7	cyclictest	2224920	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:09:44	1
2192620	2	116	0,4	sleep0	0	-21	swapper/0	09:35:38	0
2212571	2	115	0,6	sleep3	37	-21	ksoftirqd/3	09:50:45	3
2185671	2	112	0,5	sleep1	2185674	-21	latency	09:30:23	1
2112175	99	110	94,8	cyclictest	2381431	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:05:34	1
2112171	99	110	62,7	cyclictest	2224920	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:05:22	0
2112171	99	110	62,7	cyclictest	2224920	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:05:21	0
2112178	99	108	95,6	cyclictest	2388576	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:20:35	2
2112171	99	108	50,36	cyclictest	2142583	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:28:38	0
2112178	99	107	93,7	cyclictest	2343861	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:40:11	2
2112171	99	107	64,15	cyclictest	2276025	-21	aten2_r3power_v	10:40:16	0
2112171	99	107	56,28	cyclictest	2186837	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:48:05	0
2112175	99	105	91,7	cyclictest	2244361	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:49:54	1
2112175	99	105	91,7	cyclictest	2244361	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:49:54	1
2112182	99	101	87,7	cyclictest	2343861	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:35:09	3
2112182	99	101	87,7	cyclictest	2343861	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:35:08	3
2112178	99	101	88,7	cyclictest	2252030	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:10:04	2
2112171	99	101	63,31	cyclictest	2144798	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:44:41	0
2112171	99	101	63,31	cyclictest	2144798	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:44:40	0
2112171	99	99	77,6	cyclictest	2388576	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:24:52	0
2112171	99	99	64,20	cyclictest	2130355	-21	latency_hist	07:55:00	0
2112171	99	99	64,20	cyclictest	2130355	-21	latency_hist	07:55:00	0
2112171	99	99	47,28	cyclictest	2363865	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:49:30	0
2112193	99	98	93,2	cyclictest	0	-21	swapper/5	11:30:10	5
2112193	99	98	93,2	cyclictest	0	-21	swapper/5	11:30:10	5
2112182	99	98	82,8	cyclictest	2388576	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:15:16	3
2112182	99	98	82,8	cyclictest	2388576	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:15:16	3
2112178	99	97	84,7	cyclictest	2158277	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:04:32	2
2112178	99	97	74,10	cyclictest	2193681	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:00:40	2
2112193	99	96	90,3	cyclictest	0	-21	swapper/5	12:24:53	5
2112182	99	96	74,9	cyclictest	2252030	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:12:23	3
2112178	99	96	82,7	cyclictest	2193681	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:15:35	2
2112193	99	95	90,2	cyclictest	0	-21	swapper/5	11:13:42	5
2112175	99	95	81,7	cyclictest	2140313	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	08:54:32	1
2112175	99	95	75,8	cyclictest	2252030	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:31:34	1
2359067	2	94	0,5	sleep0	0	-21	swapper/0	11:45:01	0
2112178	99	94	81,6	cyclictest	2164986	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:29:37	2
2112178	99	94	81,6	cyclictest	2164986	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:29:36	2
2112171	99	94	42,28	cyclictest	2334810	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:37:39	0
2112171	99	94	42,28	cyclictest	2334810	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:37:39	0
2112178	99	93	80,7	cyclictest	2138073	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:19:23	2
2112178	99	92	79,7	cyclictest	2252030	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:39:52	2
2112175	99	92	79,7	cyclictest	2363865	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:00:15	1
2112171	99	92	63,20	cyclictest	689	50	irq/527-eth0-Tx	10:00:11	0
2112171	99	92	63,20	cyclictest	689	50	irq/527-eth0-Tx	10:00:10	0
2112171	99	92	55,19	cyclictest	2366651	-21	cut	11:50:27	0
2317791	2	91	0,5	sleep1	0	-21	swapper/1	11:12:05	1
2112193	99	91	86,2	cyclictest	0	-21	swapper/5	09:24:14	5
2112193	99	91	86,2	cyclictest	0	-21	swapper/5	09:24:13	5
2112182	99	91	78,6	cyclictest	2217392	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:20:34	3
2112178	99	91	61,7	cyclictest	2210438	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:52:39	2
2112175	99	91	78,7	cyclictest	2111872	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:25:34	1
2112175	99	91	77,7	cyclictest	2343861	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:50:14	1
2112175	99	91	60,7	cyclictest	2343861	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:55:40	1
2112171	99	90	57,14	cyclictest	689	50	irq/527-eth0-Tx	09:32:01	0
2112178	99	89	65,9	cyclictest	2186837	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:37:36	2
2112175	99	89	76,7	cyclictest	2111872	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:10:32	1
2112171	99	89	2,78	cyclictest	0	-21	swapper/0	09:20:25	0
2112171	99	89	2,78	cyclictest	0	-21	swapper/0	09:20:25	0
2112193	99	88	82,3	cyclictest	0	-21	swapper/5	11:44:07	5
2112178	99	88	73,9	cyclictest	2193681	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:40:29	2
2112171	99	88	75,7	cyclictest	2131999	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	08:10:18	0
2112171	99	88	75,6	cyclictest	2252030	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:25:41	0
2112171	99	88	60,19	cyclictest	689	50	irq/527-eth0-Tx	10:19:13	0
2112193	99	87	81,3	cyclictest	0	-21	swapper/5	12:37:42	5
2112182	99	87	72,6	cyclictest	2244361	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:45:25	3
2112182	99	87	72,6	cyclictest	2244361	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:45:24	3
2112178	99	87	74,7	cyclictest	2388576	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:11:34	2
2112178	99	87	74,6	cyclictest	2122528	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:49:34	2
2112175	99	87	48,9	cyclictest	2164986	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:20:31	1
2112175	99	87	48,9	cyclictest	2164986	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:20:30	1
2112171	99	87	78,6	cyclictest	2252030	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:13:42	0
2112178	99	86	74,6	cyclictest	2160483	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:22:14	2
2112178	99	86	74,6	cyclictest	2160483	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:22:13	2
2112178	99	86	72,7	cyclictest	2244361	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:23:34	2
2112178	99	86	65,9	cyclictest	2252030	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:55:06	2
2112171	99	86	51,28	cyclictest	2343861	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:11:56	0
2112193	99	85	78,4	cyclictest	0	-21	swapper/5	09:48:01	5
2112182	99	85	69,8	cyclictest	2381431	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:05:26	3
2112182	99	85	62,9	cyclictest	2244361	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:02:35	3
2112178	99	85	71,8	cyclictest	2334810	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:45:40	2
2112171	99	85	59,16	cyclictest	2201536	2	sleep0	09:42:37	0
2112171	99	85	51,17	cyclictest	2124659	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:45:43	0
2112171	99	85	49,27	cyclictest	2107706	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:16:46	0
2112182	99	84	70,7	cyclictest	2343861	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:55:32	3
2112182	99	84	70,7	cyclictest	2173344	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:29:39	3
2112182	99	84	70,7	cyclictest	2173344	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:29:38	3
2112178	99	84	71,7	cyclictest	2156066	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:05:35	2
2112178	99	84	71,7	cyclictest	2118644	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:39:18	2
2112178	99	84	71,7	cyclictest	2118644	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:39:18	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17