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 Jul 23, 2026 12:46:23)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1227933	2	3157	3139,10	sleep5	0	-21	swapper/5	07:05:38	5
1227933	2	3157	3139,10	sleep5	0	-21	swapper/5	07:05:37	5
1227282	2	2586	2546,18	sleep0	1224426	-21	kworker/0:3+events@ dbs_work_handler	07:05:21	0
1227282	2	2586	2546,18	sleep0	1224426	-21	kworker/0:3+events@ dbs_work_handler	07:05:20	0
1227071	2	1389	1373,6	sleep3	1224801	-21	kworker/3:3+events@ dbs_work_handler	07:05:18	3
1227071	2	1389	1373,6	sleep3	1224801	-21	kworker/3:3+events@ dbs_work_handler	07:05:18	3
1228554	2	564	546,10	sleep1	1220181	-21	kworker/1:3+events@ dbs_work_handler	07:09:24	1
1228554	2	564	546,10	sleep1	1220181	-21	kworker/1:3+events@ dbs_work_handler	07:09:24	1
1485490	2	126	0,5	sleep1	22	-21	rcuc/1	11:48:41	1
1295891	2	115	0,4	sleep4	1295874	-21	ssh	09:25:20	4
1228751	99	115	86,15	cyclictest	1405558	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:11:07	0
1228751	99	115	86,15	cyclictest	1405558	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:11:06	0
1228751	99	109	2,69	cyclictest	1283675	-21	xargs	09:15:44	0
1228776	99	102	96,3	cyclictest	0	-21	swapper/5	11:26:10	5
1228751	99	100	1,65	cyclictest	1322176	-21	aten2_r3power_p	09:45:19	0
1228751	99	99	16,50	cyclictest	1496636	-21	ssh	11:56:38	0
1228772	99	97	84,8	cyclictest	0	-21	swapper/4	11:11:07	4
1228772	99	97	84,8	cyclictest	0	-21	swapper/4	11:11:06	4
1228751	99	94	2,65	cyclictest	0	-21	swapper/0	09:45:00	0
1228751	99	94	2,65	cyclictest	0	-21	swapper/0	09:45:00	0
1228751	99	94	1,65	cyclictest	0	-21	swapper/0	12:25:41	0
1228751	99	93	29,35	cyclictest	673	50	irq/527-eth0-Tx	10:20:44	0
1228751	99	93	29,35	cyclictest	673	50	irq/527-eth0-Tx	10:20:43	0
1552178	2	92	0,2	sleep2	30	-21	ksoftirqd/2	12:39:36	2
1552178	2	92	0,2	sleep2	30	-21	ksoftirqd/2	12:39:36	2
1228776	99	91	82,5	cyclictest	0	-21	swapper/5	10:21:01	5
1228776	99	91	82,5	cyclictest	0	-21	swapper/5	10:21:00	5
1228751	99	91	2,16	cyclictest	1275510	-21	cut	09:05:18	0
1228751	99	91	1,16	cyclictest	662	-21	systemd-logind	12:01:14	0
1228751	99	90	37,39	cyclictest	673	50	irq/527-eth0-Tx	11:50:32	0
1228751	99	90	37,39	cyclictest	673	50	irq/527-eth0-Tx	11:50:32	0
1228751	99	90	1,68	cyclictest	1239725	-21	sshd	07:35:25	0
1228751	99	90	16,13	cyclictest	675	50	irq/529-eth0-Tx	12:05:45	0
1228751	99	90	13,23	cyclictest	0	-21	swapper/0	09:25:20	0
1228751	99	89	20,52	cyclictest	673	50	irq/527-eth0-Tx	10:48:49	0
1228751	99	89	1,69	cyclictest	1389398	-21	awk	10:35:41	0
1228751	99	89	1,33	cyclictest	0	-21	swapper/0	09:30:36	0
1228760	99	88	72,8	cyclictest	1324396	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:50:55	2
1228751	99	88	28,41	cyclictest	675	50	irq/529-eth0-Tx	11:00:37	0
1228751	99	88	1,75	cyclictest	0	-21	swapper/0	11:32:04	0
1228751	99	87	2,59	cyclictest	0	-21	swapper/0	08:40:25	0
1228765	99	86	73,7	cyclictest	1261500	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:35:38	3
1228756	99	86	72,7	cyclictest	1544105	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:36:19	1
1228756	99	86	72,7	cyclictest	1544105	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:36:19	1
1228751	99	86	2,19	cyclictest	0	-21	swapper/0	11:40:31	0
1228751	99	86	1,39	cyclictest	1381363	-21	/usr/sbin/munin	10:30:11	0
1228751	99	86	10,21	cyclictest	0	-21	swapper/0	11:07:08	0
1228765	99	85	71,7	cyclictest	1230002	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:25:07	3
1228751	99	85	5,25	cyclictest	210	-21	kswapd0	09:50:26	0
1228751	99	85	2,65	cyclictest	1442705	-21	sed	11:15:44	0
1228751	99	85	2,65	cyclictest	1442705	-21	sed	11:15:43	0
1228751	99	85	2,17	cyclictest	1347504	-21	ssh	10:04:40	0
1228751	99	85	2,13	cyclictest	1519837	-21	ssh	12:15:01	0
1228751	99	85	1,63	cyclictest	1367925	-21	latency_hist	10:20:01	0
1228751	99	84	42,27	cyclictest	1241467	-21	basename	07:40:21	0
1228751	99	84	22,14	cyclictest	1414918	-21	awk	10:55:19	0
1228751	99	84	13,24	cyclictest	0	-21	swapper/0	11:45:18	0
1228751	99	83	33,35	cyclictest	210	-21	kswapd0	09:35:11	0
1228751	99	83	27,39	cyclictest	0	-21	swapper/0	07:30:17	0
1228751	99	83	2,34	cyclictest	1381146	-21	latency_hist	10:30:02	0
1228751	99	83	2,34	cyclictest	0	-21	swapper/0	10:40:35	0
1228751	99	83	20,13	cyclictest	0	-21	swapper/0	11:35:24	0
1228751	99	83	14,23	cyclictest	674	50	irq/528-eth0-Tx	12:20:39	0
1228751	99	83	14,23	cyclictest	674	50	irq/528-eth0-Tx	12:20:38	0
1228751	99	83	13,23	cyclictest	0	-21	swapper/0	09:10:12	0
1228751	99	83	1,13	cyclictest	1449773	-21	ssh	11:21:00	0
1228760	99	82	66,8	cyclictest	1378998	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:36:01	2
1228751	99	82	1,40	cyclictest	0	-21	swapper/0	10:10:02	0
1228751	99	81	45,24	cyclictest	1248165	-21	mailstats	07:55:41	0
1228751	99	81	32,28	cyclictest	13	-21	ksoftirqd/0	11:25:15	0
1228751	99	81	27,38	cyclictest	0	-21	swapper/0	09:55:25	0
1488397	2	80	0,4	chrt	1280572	-21	diskmemload-4	11:50:33	4
1488397	2	80	0,4	chrt	1280572	-21	diskmemload-4	11:50:32	4
1228751	99	80	18,46	cyclictest	1289516	-21	missed_timers	09:20:24	0
1228751	99	80	14,48	cyclictest	1541112	-21	ssh	12:30:32	0
1228760	99	79	65,7	cyclictest	1352228	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:10:59	2
1228760	99	79	65,7	cyclictest	1268007	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:45:43	2
1228760	99	79	65,7	cyclictest	1268007	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:45:42	2
1228751	99	79	2,31	cyclictest	1409002	-21	ssh	10:50:31	0
1228751	99	79	2,13	cyclictest	1267630	-21	awk	08:45:17	0
1228751	99	79	2,13	cyclictest	1267630	-21	awk	08:45:17	0
1228776	99	78	73,2	cyclictest	0	-21	swapper/5	10:15:59	5
1228765	99	78	66,6	cyclictest	1292485	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:30:54	3
1228760	99	78	65,7	cyclictest	1407982	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:56:04	2
1228760	99	78	36,10	cyclictest	1292485	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:35:30	2
1228760	99	77	63,7	cyclictest	1417377	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:21:09	2
1228776	99	76	69,3	cyclictest	0	-21	swapper/5	10:00:57	5
1228751	99	76	33,25	cyclictest	675	50	irq/529-eth0-Tx	12:35:30	0
1228751	99	76	33,25	cyclictest	675	50	irq/529-eth0-Tx	12:35:29	0
1228751	99	76	2,17	cyclictest	1348269	-21	/usr/sbin/munin	10:05:19	0
1228751	99	76	1,61	cyclictest	0	-21	swapper/0	08:06:09	0
1228751	99	76	1,59	cyclictest	1522132	-21	ssh	12:15:45	0
1228751	99	76	15,45	cyclictest	0	-21	swapper/0	08:30:19	0
1285767	2	75	0,5	sleep3	0	-21	swapper/3	09:17:33	3
1228751	99	74	2,20	cyclictest	1250684	-1	kworker/0:1H+mmc_complete@ mmc_blk_mq_complete_work	08:30:02	0
1228751	99	74	2,14	cyclictest	1258053	-21	ntpq	08:20:31	0
1228751	99	74	1,34	cyclictest	0	-21	swapper/0	08:50:17	0
1523164	2	73	0,5	chrt	0	-21	swapper/2	12:16:46	2
1228756	99	73	59,7	cyclictest	1292485	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:05:56	1
1228751	99	73	1,34	cyclictest	0	-21	swapper/0	07:25:18	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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