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 Thu Dec 25, 2025 12:47:25)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1438424	2	3297	3270,17	sleep5	0	-21	swapper/5	07:05:23	5
1438740	2	2589	2529,41	sleep0	1435304	-21	kworker/0:0+events@ dbs_work_handler	07:05:36	0
1439691	99	157	27,95	cyclictest	1499010	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:30:20	0
1439691	99	151	27,86	cyclictest	1642643	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:25:19	0
1439695	99	147	134,6	cyclictest	1608770	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:56:00	1
1439695	99	147	134,6	cyclictest	1608770	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:55:59	1
1439700	99	140	126,7	cyclictest	1465045	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:25:37	2
1439691	99	138	102,28	cyclictest	1575783	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:50:59	0
1439691	99	138	102,28	cyclictest	1575783	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:50:58	0
1439700	99	136	123,7	cyclictest	1467838	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:20:37	2
1439695	99	134	119,7	cyclictest	1681219	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:06:12	1
1439695	99	134	119,7	cyclictest	1681219	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:06:12	1
1439691	99	128	100,23	cyclictest	210	-21	kswapd0	10:10:27	0
1439691	99	127	87,33	cyclictest	1575783	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:30:56	0
1439691	99	127	87,33	cyclictest	1575783	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:30:56	0
1439691	99	123	88,31	cyclictest	210	-21	kswapd0	12:25:14	0
1439691	99	123	88,31	cyclictest	210	-21	kswapd0	12:25:14	0
1439700	99	122	108,7	cyclictest	1514067	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:40:47	2
1439700	99	122	108,7	cyclictest	1514067	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:40:47	2
1439700	99	122	107,8	cyclictest	1666068	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:25:14	2
1439700	99	122	107,8	cyclictest	1666068	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:25:14	2
1439700	99	122	106,7	cyclictest	1559563	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:20:26	2
1439700	99	121	107,6	cyclictest	1592288	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:02:16	2
1439700	99	121	107,6	cyclictest	1592288	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:02:16	2
1439691	99	121	29,15	cyclictest	1480349	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:05:28	0
1439695	99	115	102,7	cyclictest	1514067	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:10:54	1
1439709	99	113	107,2	cyclictest	0	-21	swapper/4	11:41:06	4
1439691	99	113	81,24	cyclictest	1592288	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:06:01	0
1439691	99	113	63,35	cyclictest	689	50	irq/527-eth0-Tx	11:35:45	0
1439700	99	112	98,7	cyclictest	1642643	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:45:29	2
1439700	99	111	97,7	cyclictest	1514067	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:02:36	2
1439700	99	110	97,7	cyclictest	1454192	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:45:25	2
1439709	99	108	103,2	cyclictest	0	-21	swapper/4	12:25:27	4
1439709	99	108	103,2	cyclictest	0	-21	swapper/4	12:25:26	4
1439695	99	108	95,7	cyclictest	1642643	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:31:03	1
1439700	99	106	92,7	cyclictest	1635293	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:21:04	2
1439700	99	106	92,7	cyclictest	1635293	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:21:04	2
1439709	99	105	99,2	cyclictest	0	-21	swapper/4	11:45:27	4
1439695	99	104	92,6	cyclictest	1547274	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:15:56	1
1439695	99	104	92,6	cyclictest	1547274	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:15:55	1
1439691	99	104	70,27	cyclictest	1535050	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:05:05	0
1439691	99	104	70,27	cyclictest	1535050	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:05:04	0
1439709	99	103	92,6	cyclictest	1491355	-21	diskmemload-4	10:21:03	4
1439700	99	103	90,7	cyclictest	1465045	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:40:39	2
1439695	99	103	95,5	cyclictest	210	-21	kswapd0	10:42:04	1
1439691	99	103	75,24	cyclictest	210	-21	kswapd0	09:55:07	0
1439691	99	103	75,24	cyclictest	210	-21	kswapd0	09:55:06	0
1439695	99	102	89,6	cyclictest	1592288	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:11:01	1
1439695	99	102	64,8	cyclictest	1599959	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:01:10	1
1439695	99	102	64,8	cyclictest	1599959	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:01:10	1
1439691	99	102	31,32	cyclictest	1719756	-21	ssh	12:30:32	0
1439691	99	102	21,35	cyclictest	1562264	-21	acpi	10:15:11	0
1439691	99	102	21,35	cyclictest	1562264	-21	acpi	10:15:10	0
1439691	99	101	8,3	cyclictest	0	-21	swapper/0	11:10:13	0
1439691	99	101	24,45	cyclictest	1415976	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:22:51	0
1439700	99	100	87,7	cyclictest	1465045	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:35:39	2
1439691	99	100	55,37	cyclictest	1674917	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:10:33	0
1439691	99	100	55,37	cyclictest	1674917	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:10:33	0
1439691	99	100	54,21	cyclictest	1716929	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:39:55	0
1439700	99	99	86,7	cyclictest	1559563	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:25:56	2
1439691	99	99	55,36	cyclictest	1599959	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:21:02	0
1439691	99	99	55,36	cyclictest	1599959	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:21:02	0
1439704	99	98	83,8	cyclictest	1666068	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:55:13	3
1439695	99	98	86,6	cyclictest	1514067	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:46:34	1
1439695	99	98	86,6	cyclictest	1514067	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:46:34	1
1439695	99	98	84,7	cyclictest	1452211	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:40:19	1
1439691	99	98	6,8	cyclictest	0	-21	swapper/0	09:40:23	0
1439691	99	98	6,8	cyclictest	0	-21	swapper/0	09:40:23	0
1439691	99	98	37,31	cyclictest	690	50	irq/528-eth0-Tx	11:20:01	0
1439691	99	98	37,31	cyclictest	690	50	irq/528-eth0-Tx	11:20:00	0
1439709	99	97	92,2	cyclictest	0	-21	swapper/4	09:55:06	4
1439709	99	97	92,2	cyclictest	0	-21	swapper/4	09:55:06	4
1439709	99	97	83,8	cyclictest	1675205	-21	ssh	11:51:53	4
1439700	99	97	84,7	cyclictest	1674917	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:06:34	2
1439700	99	97	84,7	cyclictest	1674917	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:06:33	2
1439700	99	96	86,6	cyclictest	210	-21	kswapd0	12:35:25	2
1439700	99	96	82,7	cyclictest	1478004	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	08:45:42	2
1439691	99	96	68,21	cyclictest	1465045	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:20:35	0
1439691	99	96	57,14	cyclictest	1504287	-21	/usr/sbin/munin	09:25:28	0
1439691	99	96	55,21	cyclictest	0	-21	swapper/0	08:04:34	0
1439691	99	96	18,5	cyclictest	1574930	-21	ssh	10:25:33	0
1439695	99	95	81,7	cyclictest	1482733	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:14:35	1
1439691	99	95	10,52	cyclictest	0	-21	swapper/0	09:35:24	0
1439691	99	95	10,52	cyclictest	0	-21	swapper/0	09:35:23	0
1439709	99	94	90,2	cyclictest	0	-21	swapper/4	09:30:13	4
1439704	99	94	75,7	cyclictest	1499010	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:20:28	3
1439700	99	94	80,7	cyclictest	1449702	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:35:18	2
1439691	99	94	9,34	cyclictest	689	50	irq/527-eth0-Tx	11:55:15	0
1439691	99	94	1,46	cyclictest	690	50	irq/528-eth0-Tx	12:20:00	0
1439691	99	94	1,46	cyclictest	690	50	irq/528-eth0-Tx	12:20:00	0
1439709	99	93	87,2	cyclictest	0	-21	swapper/4	10:10:28	4
1439695	99	93	64,7	cyclictest	1642643	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:36:05	1
1439691	99	93	1,3	cyclictest	0	-21	swapper/0	08:41:04	0
1439709	99	92	82,5	cyclictest	1705921	-21	ssh	12:19:02	4
1439709	99	92	82,5	cyclictest	1705921	-21	ssh	12:19:01	4
1439691	99	92	49,21	cyclictest	0	-21	swapper/0	08:53:17	0
1439691	99	92	44,21	cyclictest	0	-21	swapper/0	09:03:42	0
1439691	99	92	20,6	cyclictest	1449702	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:38:32	0
1439691	99	91	58,25	cyclictest	1666068	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:54:08	0
1439691	99	91	55,26	cyclictest	1666068	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:45:23	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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