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 50 highest latencies:

System rack3slot4.osadl.org (updated Sat Aug 29, 2026 00:46:31)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2178013	2	2690	2677,6	sleep2	2177759	-21	kworker/2:0+events@ dbs_work_handler	19:07:36	2
2178013	2	2690	2677,6	sleep2	2177759	-21	kworker/2:0+events@ dbs_work_handler	19:07:35	2
2176545	2	1131	1109,13	sleep1	2176039	-21	kworker/1:1+events@ dbs_work_handler	19:05:16	1
2176545	2	1131	1109,13	sleep1	2176039	-21	kworker/1:1+events@ dbs_work_handler	19:05:15	1
2177387	2	173	153,11	sleep3	2174121	-21	kworker/3:1+events@ dbs_work_handler	19:05:36	3
2177387	2	173	153,11	sleep3	2174121	-21	kworker/3:1+events@ dbs_work_handler	19:05:35	3
2178352	99	138	102,28	cyclictest	2425269	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:23:37	0
2178371	99	132	123,5	cyclictest	0	-21	swapper/4	22:41:20	4
2178352	99	123	88,27	cyclictest	2322520	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:11:28	0
2178357	99	122	109,6	cyclictest	2228952	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:26:05	1
2178357	99	122	109,6	cyclictest	2228952	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:26:05	1
2178352	99	121	82,19	cyclictest	2262116	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:56:12	0
2178371	99	116	104,7	cyclictest	2259536	-21	ssh	21:36:07	4
2178371	99	112	105,3	cyclictest	0	-21	swapper/4	22:11:15	4
2178371	99	112	105,3	cyclictest	0	-21	swapper/4	22:11:15	4
2178361	99	111	96,7	cyclictest	2322520	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:31:18	2
2178357	99	111	98,6	cyclictest	2385394	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:16:28	1
2178352	99	110	2,83	cyclictest	2398680	-21	wc	23:25:25	0
2178352	99	107	29,45	cyclictest	2247768	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:28:31	0
2178352	99	107	29,45	cyclictest	2247768	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:28:31	0
2178357	99	105	89,8	cyclictest	2322520	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:01:24	1
2178352	99	105	2,90	cyclictest	0	-21	swapper/0	19:30:41	0
2377728	2	104	0,4	sleep1	0	-21	swapper/1	23:09:19	1
2178357	99	101	86,8	cyclictest	2400443	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:47:03	1
2178352	99	101	1,88	cyclictest	0	-21	swapper/0	22:53:35	0
2178352	99	101	1,88	cyclictest	0	-21	swapper/0	22:53:35	0
2178361	99	100	87,6	cyclictest	2175960	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:10:39	2
2178352	99	100	68,22	cyclictest	674	50	irq/528-eth0-Tx	23:50:29	0
2178352	99	100	2,87	cyclictest	0	-21	swapper/0	20:25:29	0
2178352	99	100	2,87	cyclictest	0	-21	swapper/0	20:25:29	0
2178352	99	100	1,81	cyclictest	0	-21	swapper/0	22:00:27	0
2178352	99	99	65,25	cyclictest	673	50	irq/527-eth0-Tx	22:25:45	0
2178357	99	98	83,7	cyclictest	2226339	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:11:03	1
2178352	99	98	37,39	cyclictest	2216635	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:53:35	0
2363273	2	97	0,9	sleep2	30	-21	ksoftirqd/2	22:57:24	2
2363273	2	97	0,9	sleep2	30	-21	ksoftirqd/2	22:57:24	2
2178357	99	95	82,6	cyclictest	2226339	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:46:10	1
2178352	99	95	44,27	cyclictest	674	50	irq/528-eth0-Tx	23:45:29	0
2178366	99	94	80,7	cyclictest	2489951	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:38:44	3
2178352	99	94	1,82	cyclictest	0	-21	swapper/0	22:24:29	0
2178352	99	93	37,17	cyclictest	2344973	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:45:15	0
2178352	99	93	37,17	cyclictest	2344973	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:45:14	0
2331339	2	92	0,6	sleep4	2331338	-21	ssh	22:32:35	4
2178352	99	92	6,56	cyclictest	2296671	-21	ntpq	22:05:31	0
2178352	99	92	6,56	cyclictest	2296671	-21	ntpq	22:05:31	0
2178352	99	92	47,25	cyclictest	2360075	-21	awk	22:55:19	0
2178352	99	92	47,25	cyclictest	2360075	-21	awk	22:55:19	0
2178352	99	91	74,14	cyclictest	2226339	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:06:03	0
2178352	99	91	54,24	cyclictest	0	-21	swapper/0	21:15:01	0
2178352	99	91	33,36	cyclictest	2226339	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:16:26	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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