OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack7slot2.osadl.org (updated Fri May 15, 2026 12:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1360207	99	105	97,6	cyclictest	1348701	-21	kworker/u4:15+events_unbound	07:24:01	1
1360206	99	105	95,7	cyclictest	1503793	-21	kworker/u4:0+events_unbound	11:19:46	0
1360206	99	105	95,7	cyclictest	1503793	-21	kworker/u4:0+events_unbound	11:19:46	0
1360206	99	99	80,6	cyclictest	1406999	-21	kworker/u4:6+events_unbound	09:54:30	0
1360207	99	94	87,5	cyclictest	1357696	-21	kworker/u4:13+events_unbound	08:04:11	1
1360206	99	94	87,5	cyclictest	1446409	-21	kworker/u4:5+events_unbound	10:14:33	0
1360206	99	92	85,5	cyclictest	1407000	-21	kworker/u4:7+events_unbound	09:34:24	0
1360206	99	90	73,6	cyclictest	1450865	-21	kworker/u4:4+events_unbound	10:29:37	0
1360206	99	89	81,6	cyclictest	1481395	-21	kworker/u4:3+events_unbound	11:04:42	0
1360207	99	79	65,7	cyclictest	1357691	-21	kworker/u4:7+events_unbound	07:17:02	1
1360206	99	77	69,6	cyclictest	1365275	-21	kworker/u4:18+events_unbound	08:10:01	0
1360206	99	71	65,4	cyclictest	1472442	-21	kworker/u4:5+events_unbound	10:44:38	0
1360206	99	71	63,5	cyclictest	1424782	-21	kworker/u4:9+events_unbound	09:49:29	0
1360206	99	68	48,5	cyclictest	1516470	-21	kworker/u4:2+events_unbound	11:44:49	0
1360206	99	65	58,5	cyclictest	1476906	-21	kworker/u4:1+events_unbound	11:29:48	0
1360207	99	64	22,16	cyclictest	17	1	rcu_preempt	11:25:31	1
1360206	99	64	59,3	cyclictest	1547628	-21	kworker/u4:1+events_unbound	12:09:56	0
1360206	99	64	57,5	cyclictest	1551431	-21	kworker/u4:4+events_unbound	12:19:56	0
1360206	99	64	56,6	cyclictest	1529818	-21	kworker/u4:0+events_unbound	11:55:00	0
1360206	99	64	55,7	cyclictest	1547628	-21	kworker/u4:1+events_unbound	12:14:55	0
1360207	99	60	54,4	cyclictest	1441964	-21	kworker/u4:3+events_unbound	10:09:34	1
1360207	99	60	53,5	cyclictest	1357696	-21	kworker/u4:13+events_unbound	07:46:44	1
1360207	99	60	50,6	cyclictest	1575424	-21	kworker/u4:0	12:40:00	1
1360207	99	59	51,6	cyclictest	1364002	-21	kworker/u4:2+events_unbound	07:30:41	1
1360206	99	58	52,4	cyclictest	1481397	-21	kworker/u4:4+events_unbound	11:14:42	0
1360206	99	58	49,7	cyclictest	1569255	-21	kworker/u4:6+events_unbound	12:39:59	0
1360206	99	58	49,6	cyclictest	1369133	-21	modprobe	07:45:00	0
1360206	99	58	48,8	cyclictest	1389668	-21	systemd	09:04:18	0
1360206	99	58	48,8	cyclictest	1389668	-21	systemd	09:04:18	0
1360207	99	57	45,8	cyclictest	53	-21	kswapd0	11:20:01	1
1360207	99	57	45,8	cyclictest	53	-21	kswapd0	11:20:01	1
1360206	99	57	50,5	cyclictest	1357696	-21	kworker/u4:13+events_unbound	07:54:08	0
1360207	99	56	40,13	cyclictest	0	-21	swapper/1	11:55:12	1
1360207	99	56	34,20	cyclictest	27	1	ktimers/1	07:35:29	1
1360206	99	56	50,4	cyclictest	1476910	-21	kworker/u4:6+events_unbound	10:59:41	0
1360207	99	55	48,5	cyclictest	1383245	-21	kworker/u4:4+events_unbound	08:40:04	1
1360207	99	54	47,5	cyclictest	1375577	-21	kworker/u4:5+events_unbound	08:17:01	1
1360206	99	54	47,5	cyclictest	1529818	-21	kworker/u4:0+events_unbound	12:24:57	0
1360207	99	53	45,6	cyclictest	1396751	-21	/usr/sbin/munin	09:15:38	1
1360207	99	53	43,6	cyclictest	1404533	-21	latency_hist	09:25:02	1
1360207	99	53	19,21	cyclictest	0	-21	swapper/1	09:30:32	1
1360206	99	53	43,8	cyclictest	1435587	-21	cpu	10:00:17	0
1360206	99	53	43,7	cyclictest	1541544	-21	ssh	12:00:35	0
1360206	99	53	32,9	cyclictest	15	1	ktimers/0	11:31:50	0
1360206	99	53	31,20	cyclictest	1372118	-21	fschecks_count	07:55:19	0
1360207	99	52	45,5	cyclictest	1376851	-21	kworker/u4:10+events_unbound	08:51:14	1
1360207	99	52	38,6	cyclictest	1365274	-21	kworker/u4:17+events_unbound	07:50:41	1
1360207	99	52	38,6	cyclictest	1365274	-21	kworker/u4:17+events_unbound	07:41:00	1
1360206	99	52	30,20	cyclictest	1376105	-21	fschecks_time	08:10:17	0
1360207	99	51	44,5	cyclictest	1544783	-21	ssh	12:05:01	1
1360207	99	51	44,5	cyclictest	1439510	-21	awk	10:05:00	1
1360207	99	51	44,5	cyclictest	1378121	-21	kworker/u4:11+events_unbound	08:20:06	1
1360207	99	51	38,6	cyclictest	1375573	-21	kworker/u4:0+events_unbound	08:14:00	1
1360207	99	50	42,6	cyclictest	1384550	-21	kworker/u4:13+events_unbound	09:01:00	1
1360207	99	50	42,6	cyclictest	1384550	-21	kworker/u4:13+events_unbound	09:01:00	1
1360207	99	50	39,7	cyclictest	0	-21	swapper/1	09:25:11	1
1360207	99	50	36,10	cyclictest	37	-21	kcompactd0	12:17:12	1
1360207	99	50	16,20	cyclictest	0	-21	swapper/1	11:20:28	1
1360207	99	50	16,18	cyclictest	0	-21	swapper/1	11:40:30	1
1360207	99	49	43,4	cyclictest	0	-21	swapper/1	11:00:11	1
1360207	99	49	42,5	cyclictest	1475231	-21	gltestperf	10:45:20	1
1360207	99	49	41,6	cyclictest	1392514	-21	diskmemload	09:10:38	1
1360207	99	49	17,19	cyclictest	0	-21	swapper/1	11:45:24	1
1360206	99	49	42,5	cyclictest	1476137	-21	who	10:45:41	0
1360206	99	49	39,7	cyclictest	1396186	-21	/usr/sbin/munin	09:15:21	0
1360207	99	48	41,5	cyclictest	1355216	-21	kworker/u4:4+events_unbound	08:27:59	1
1360207	99	48	39,7	cyclictest	1360205	-21	cyclictest	08:32:44	1
1360207	99	48	38,7	cyclictest	0	-21	swapper/1	10:40:14	1
1360207	99	48	36,5	cyclictest	1538717	-21	kworker/u4:7+events_unbound	12:11:33	1
1360206	99	48	41,5	cyclictest	1360205	-21	cyclictest	12:25:32	0
1360206	99	48	40,5	cyclictest	1453611	-21	gcc	10:20:26	0
1360206	99	48	39,6	cyclictest	1567224	-21	/usr/sbin/munin	12:30:16	0
1360206	99	48	38,7	cyclictest	1390970	-21	diskmemload	09:10:00	0
1360206	99	48	36,9	cyclictest	1375577	-21	kworker/u4:5+events_unbound	08:23:58	0
1360206	99	48	2,36	cyclictest	1531608	-21	munin-run	11:50:01	0
1360207	99	47	40,5	cyclictest	1498129	-21	sed	11:10:39	1
1360207	99	47	38,7	cyclictest	1533095	-21	unixbench-2d	11:50:39	1
1360207	99	47	37,8	cyclictest	1435122	-21	sh	10:00:02	1
1360206	99	47	39,5	cyclictest	1466629	-21	kernelversion	10:35:25	0
1360206	99	47	38,7	cyclictest	1380712	-21	systemd	08:29:13	0
1360206	99	47	29,5	cyclictest	1446409	-21	kworker/u4:5+events_unbound	10:19:34	0
1360207	99	46	41,4	cyclictest	1357696	-21	kworker/u4:13+events_unbound	08:07:27	1
1360207	99	46	40,4	cyclictest	1448811	-21	/usr/sbin/munin	10:15:18	1
1360207	99	46	37,7	cyclictest	1466159	-21	aten_r7power_en	10:35:18	1
1360207	99	46	21,5	cyclictest	0	-21	swapper/1	12:30:24	1
1360206	99	46	41,4	cyclictest	1433056	-21	kworker/u4:2+events_unbound	10:00:00	0
1360206	99	46	40,4	cyclictest	1419015	-21	timerwakeupswit	09:40:39	0
1360206	99	46	40,4	cyclictest	0	-21	swapper/0	08:45:35	0
1360206	99	46	39,5	cyclictest	1414489	-21	mailstats	09:35:40	0
1360206	99	46	39,5	cyclictest	1392006	-21	gcc	09:10:27	0
1360207	99	45	39,4	cyclictest	1558371	-21	aten_r7power_vo	12:20:18	1
1360207	99	45	39,4	cyclictest	1462103	-21	gltestperf	10:30:20	1
1360207	99	45	39,4	cyclictest	1383246	-21	kworker/u4:5+events_unbound	08:39:01	1
1360207	99	45	38,5	cyclictest	1427029	-21	fschecks_time	09:50:19	1
1360207	99	45	38,5	cyclictest	1365275	-21	kworker/u4:18+events_unbound	07:59:45	1
1360207	99	45	37,6	cyclictest	1418660	-21	ntp_offset	09:40:30	1
1360207	99	45	35,8	cyclictest	1546416	-21	unixbench_singl	12:05:46	1
1360207	99	45	34,7	cyclictest	0	-21	swapper/1	12:25:10	1
1360207	99	45	27,14	cyclictest	1360205	-21	cyclictest	09:09:44	1
1360206	99	45	39,5	cyclictest	1525362	-21	kworker/u4:1+events_unbound	11:55:02	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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