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 Sun Jun 14, 2026 00:46:30)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1589821	2	2188	2162,9	sleep2	1589227	-21	kworker/2:1+events@ dbs_work_handler	19:05:17	2
1589821	2	2188	2162,9	sleep2	1589227	-21	kworker/2:1+events@ dbs_work_handler	19:05:16	2
1591621	99	155	119,28	cyclictest	1614089	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:53:08	0
1591621	99	151	19,110	cyclictest	1633804	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:30:13	0
1591621	99	141	64,39	cyclictest	1699751	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:27:46	0
1591621	99	135	56,40	cyclictest	1603454	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	19:39:00	0
1591621	99	134	59,38	cyclictest	1876352	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:26:05	0
1591621	99	134	59,38	cyclictest	1876352	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:26:04	0
1591621	99	132	52,43	cyclictest	1633804	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:55:40	0
1591621	99	131	69,30	cyclictest	1720377	-21	/usr/sbin/munin	22:15:21	0
1591621	99	131	66,57	cyclictest	1732392	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:05:56	0
1591630	99	128	115,7	cyclictest	1893622	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:33:56	2
1591630	99	128	115,7	cyclictest	1893622	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:33:55	2
1591621	99	128	1,107	cyclictest	0	-21	swapper/0	20:25:19	0
1591621	99	127	71,49	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:57:18	0
1591621	99	126	69,49	cyclictest	1732392	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:34:18	0
1591621	99	125	47,41	cyclictest	1633804	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:06:38	0
1591621	99	124	91,24	cyclictest	1614089	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:33:05	0
1591621	99	124	89,27	cyclictest	1591151	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:12:45	0
1591621	99	123	79,23	cyclictest	0	-21	swapper/0	21:15:42	0
1591621	99	123	67,48	cyclictest	1699751	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:06:11	0
1591621	99	122	89,26	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:53:23	0
1591621	99	122	67,39	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:45:17	0
1591621	99	122	67,39	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:45:17	0
1591621	99	121	65,48	cyclictest	1793254	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:37:44	0
1591621	99	120	88,23	cyclictest	1812523	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:57:56	0
1591621	99	120	86,24	cyclictest	1599525	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:34:45	0
1591621	99	120	43,48	cyclictest	1841178	-21	/usr/sbin/munin	23:50:42	0
1591626	99	117	104,7	cyclictest	1793254	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:13:39	1
1591621	99	117	58,34	cyclictest	1699751	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:14:51	0
1591621	99	117	1,94	cyclictest	0	-21	swapper/0	19:50:25	0
1591621	99	116	72,23	cyclictest	0	-21	swapper/0	19:20:00	0
1591621	99	116	72,21	cyclictest	689	50	irq/527-eth0-Tx	23:30:41	0
1591621	99	116	57,32	cyclictest	689	50	irq/527-eth0-Tx	23:43:35	0
1591626	99	115	102,6	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:23:15	1
1591621	99	115	59,47	cyclictest	1571023	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:21:15	0
1591621	99	115	59,47	cyclictest	1571023	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:21:14	0
1591621	99	113	76,29	cyclictest	1740330	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:36:26	0
1591621	99	113	72,33	cyclictest	1732392	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:03:35	0
1591621	99	112	80,24	cyclictest	1842537	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:10:34	0
1591630	99	111	99,6	cyclictest	1876352	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:38:56	2
1591621	99	111	52,40	cyclictest	1614089	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:15:02	0
1591630	99	109	95,7	cyclictest	1793254	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:35:34	2
1591626	99	108	95,6	cyclictest	1850176	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:58:47	1
1591626	99	108	95,6	cyclictest	1842537	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:08:49	1
1591621	99	108	77,23	cyclictest	1699751	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:03:34	0
1591621	99	108	72,15	cyclictest	1614089	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:39:55	0
1591621	99	108	72,15	cyclictest	1614089	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:39:54	0
1591621	99	108	71,16	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:28:52	0
1591621	99	108	66,15	cyclictest	1842537	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:06:14	0
1591630	99	106	93,6	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:18:13	2
1591621	99	106	73,15	cyclictest	1699751	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:26:33	0
1591621	99	106	63,24	cyclictest	1770852	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:20:09	0
1591621	99	105	75,23	cyclictest	1749055	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:41:36	0
1591621	99	105	66,19	cyclictest	1749055	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:45:10	0
1591621	99	105	66,19	cyclictest	1749055	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:45:10	0
1591621	99	105	48,37	cyclictest	1812523	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:45:02	0
1591635	99	103	68,19	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:01:51	3
1591626	99	103	89,7	cyclictest	1793254	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:31:32	1
1591621	99	103	72,15	cyclictest	1850176	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:00:52	0
1591621	99	103	67,15	cyclictest	1876352	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:31:09	0
1591621	99	103	67,15	cyclictest	1876352	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:31:09	0
1591621	99	103	66,16	cyclictest	1633804	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:44:40	0
1591644	99	102	96,3	cyclictest	0	-21	swapper/5	20:18:02	5
1591621	99	102	65,16	cyclictest	1682258	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:22:37	0
1591621	99	102	64,18	cyclictest	1614089	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:20:04	0
1591621	99	102	44,36	cyclictest	1595375	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:59:09	0
1591621	99	101	70,15	cyclictest	1876352	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:24:36	0
1591621	99	101	70,15	cyclictest	1876352	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:24:35	0
1591621	99	101	69,21	cyclictest	689	50	irq/527-eth0-Tx	00:18:42	0
1591621	99	101	66,23	cyclictest	0	-21	swapper/0	19:45:01	0
1591621	99	101	66,23	cyclictest	0	-21	swapper/0	19:45:00	0
1591621	99	101	65,16	cyclictest	1642142	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:36:18	0
1591630	99	100	84,9	cyclictest	1699751	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:28:33	2
1591626	99	100	86,7	cyclictest	1599525	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:32:50	1
1591626	99	100	86,7	cyclictest	1591151	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:10:25	1
1591626	99	100	85,7	cyclictest	1842537	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:13:50	1
1591621	99	100	2,79	cyclictest	0	-21	swapper/0	21:00:43	0
1591644	99	99	92,3	cyclictest	0	-21	swapper/5	20:53:08	5
1591626	99	99	85,7	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:06:08	1
1591621	99	99	69,14	cyclictest	1732392	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:51:17	0
1591621	99	99	69,14	cyclictest	1732392	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:51:17	0
1591621	99	99	64,15	cyclictest	1633804	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:12:19	0
1591621	99	99	2,83	cyclictest	0	-21	swapper/0	19:25:23	0
1591621	99	99	1,86	cyclictest	0	-21	swapper/0	22:10:33	0
1591630	99	98	62,8	cyclictest	1732392	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:11:25	2
1591621	99	98	65,22	cyclictest	690	50	irq/528-eth0-Tx	20:00:25	0
1591621	99	98	63,15	cyclictest	1614089	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:40:10	0
1591621	99	98	60,35	cyclictest	1793254	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:18:54	0
1591621	99	98	57,16	cyclictest	1603454	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	19:45:27	0
1591621	99	98	2,78	cyclictest	1652352	-21	ld	21:20:31	0
1591630	99	97	85,6	cyclictest	1699751	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:58:38	2
1591626	99	97	82,6	cyclictest	1646980	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:00:59	1
1591621	99	97	66,22	cyclictest	691	50	irq/529-eth0-Tx	20:10:33	0
1591621	99	97	65,16	cyclictest	1614089	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:49:55	0
1591621	99	97	65,15	cyclictest	1770852	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:59:47	0
1591621	99	97	61,15	cyclictest	1614089	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:06:45	0
1591644	99	96	90,3	cyclictest	0	-21	swapper/5	20:07:58	5
1591644	99	96	89,3	cyclictest	0	-21	swapper/5	00:01:35	5
1591630	99	96	82,8	cyclictest	1825696	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:40:33	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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