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 highest latencies:

System rack7slot2.osadl.org (updated Fri Jul 03, 2026 00:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1342827	99	112	97,6	cyclictest	1478884	-21	kworker/u4:2+events_unbound	23:18:15	0
1342827	99	107	100,5	cyclictest	1363316	-21	kworker/u4:0+events_unbound	21:07:50	0
1342827	99	106	93,6	cyclictest	1341559	-21	kworker/u4:7+events_unbound	19:17:34	0
1342827	99	96	89,5	cyclictest	1359466	-21	kworker/u4:7+events_unbound	20:32:44	0
1342827	99	91	84,5	cyclictest	1478883	-21	kworker/u4:0+events_unbound	23:28:17	0
1342827	99	90	83,5	cyclictest	1365944	-21	kworker/u4:10+events_unbound	20:52:46	0
1342827	99	90	83,5	cyclictest	1364587	-21	kworker/u4:6+events_unbound	20:57:46	0
1342827	99	90	76,6	cyclictest	1465457	-21	kworker/u4:9+events_unbound	22:53:10	0
1342827	99	89	82,5	cyclictest	1356925	-21	kworker/u4:1+events_unbound	20:12:40	0
1342827	99	86	78,6	cyclictest	1448129	-21	kworker/u4:4+events_unbound	22:38:06	0
1342827	99	86	38,26	cyclictest	256	50	irq/23-42890000.ethernet	19:10:00	0
1342828	99	83	75,6	cyclictest	1394349	-21	kworker/u4:0+events_unbound	21:35:00	1
1342827	99	81	74,5	cyclictest	1360738	-21	kworker/u4:14+events_unbound	20:25:01	0
1342827	99	79	72,5	cyclictest	1351818	-21	kworker/u4:8+events_unbound	19:50:02	0
1342827	99	78	70,6	cyclictest	1353089	-21	kworker/u4:12+events_unbound	20:17:03	0
1342827	99	78	70,6	cyclictest	1353089	-21	kworker/u4:12+events_unbound	20:17:02	0
1342828	99	69	58,8	cyclictest	1527391	-21	kworker/u4:0+events_unbound	00:18:30	1
1342828	99	67	30,24	cyclictest	0	-21	swapper/1	21:45:29	1
1342828	99	64	30,22	cyclictest	0	-21	swapper/1	23:55:00	1
1342827	99	64	56,6	cyclictest	1360739	-21	kworker/u4:16+events_unbound	20:40:01	0
1342827	99	64	50,7	cyclictest	1403551	-21	kworker/u4:15+events_unbound	22:17:00	0
1342828	99	63	53,8	cyclictest	378	-21	dbus-daemon	22:18:01	1
1342828	99	62	55,5	cyclictest	1527395	-21	kworker/u4:7+events_unbound	00:28:32	1
1342828	99	62	25,19	cyclictest	0	-21	swapper/1	23:55:34	1
1342827	99	62	55,5	cyclictest	1359465	-21	kworker/u4:5+events_unbound	21:00:01	0
1342827	99	62	48,7	cyclictest	1380603	-21	kworker/u4:5+events_unbound	21:58:59	0
1342828	99	60	48,9	cyclictest	1373280	-21	sendmail_mailqu	21:05:36	1
1342827	99	60	53,5	cyclictest	1478884	-21	kworker/u4:2+events_unbound	23:10:02	0
1342828	99	59	25,18	cyclictest	0	-21	swapper/1	22:40:33	1
1342827	99	59	52,5	cyclictest	1527395	-21	kworker/u4:7+events_unbound	00:30:02	0
1342827	99	59	46,5	cyclictest	1365944	-21	kworker/u4:10+events_unbound	20:40:07	0
1342828	99	58	47,8	cyclictest	1429363	-21	/usr/sbin/munin	22:10:51	1
1342828	99	58	39,17	cyclictest	0	-21	swapper/1	23:15:12	1
1342828	99	58	22,20	cyclictest	0	-21	swapper/1	23:31:52	1
1342827	99	58	51,5	cyclictest	1360738	-21	kworker/u4:14+events_unbound	20:20:03	0
1342827	99	58	50,6	cyclictest	1525653	-21	/usr/sbin/munin	00:00:22	0
1342827	99	57	51,5	cyclictest	1527391	-21	kworker/u4:0+events_unbound	00:15:02	0
1342827	99	57	50,5	cyclictest	1491032	-21	timerandwakeup	23:20:42	0
1342827	99	57	50,5	cyclictest	1402871	-21	kworker/u4:11+events_unbound	21:42:00	0
1342828	99	56	48,5	cyclictest	1478884	-21	kworker/u4:2+events_unbound	23:08:10	1
1342827	99	56	40,6	cyclictest	1332708	-21	kworker/u4:6+events_unbound	19:41:45	0
1342828	99	55	4,40	cyclictest	1530348	-21	sh	00:05:34	1
1342828	99	54	44,7	cyclictest	1438123	-21	unixbench_multi	22:20:40	1
1342828	99	54	39,12	cyclictest	1507999	-21	if_err_eth0	23:40:21	1
1342828	99	54	38,12	cyclictest	1551835	-21	fschecks_count	00:30:20	1
1342828	99	54	19,20	cyclictest	0	-21	swapper/1	00:39:41	1
1342827	99	54	44,8	cyclictest	1379180	-21	/usr/sbin/munin	21:15:27	0
1342827	99	54	43,7	cyclictest	1460064	-21	switchtime	22:45:39	0
1342827	99	54	1,36	cyclictest	1388265	-21	ssh	21:25:27	0
1342828	99	53	42,7	cyclictest	1387523	-21	dpkg	21:25:12	1
1342828	99	53	22,16	cyclictest	0	-21	swapper/1	23:35:27	1
1342827	99	53	46,5	cyclictest	1439196	-21	kworker/u4:6+events_unbound	22:25:03	0
1342827	99	53	46,5	cyclictest	1341556	-21	kworker/u4:3+events_unbound	20:00:02	0
1342827	99	53	45,6	cyclictest	1439197	-21	kworker/u4:7+events_unbound	22:23:01	0
1342827	99	53	35,14	cyclictest	0	-21	swapper/0	21:10:26	0
1342828	99	52	39,9	cyclictest	1434677	-21	kworker/u4:3-rpciod	22:50:19	1
1342828	99	52	23,11	cyclictest	0	-21	swapper/1	22:25:20	1
1342827	99	52	46,4	cyclictest	53	-21	kswapd0	22:00:15	0
1342827	99	52	45,5	cyclictest	1376008	-21	kworker/u4:1+events_unbound	21:24:00	0
1342827	99	52	3,17	cyclictest	1502899	-21	latency_hist	23:35:01	0
1342828	99	51	41,8	cyclictest	400	-21	systemd-logind	21:12:50	1
1342827	99	51	44,5	cyclictest	1341559	-21	kworker/u4:7+events_unbound	19:11:01	0
1342827	99	51	43,6	cyclictest	1344047	-21	kworker/u4:11+events_unbound	19:25:02	0
1342827	99	51	42,6	cyclictest	1428798	-21	ntpq	22:10:35	0
1342827	99	51	39,5	cyclictest	1527395	-21	kworker/u4:7+events_unbound	00:07:00	0
1342827	99	51	34,14	cyclictest	53	-21	kswapd0	23:50:11	0
1342828	99	50	43,5	cyclictest	1459114	-21	aten_r7power_po	22:45:17	1
1342828	99	50	41,6	cyclictest	1491017	-21	timerandwakeup	23:20:41	1
1342828	99	50	1,40	cyclictest	1534670	-21	ntpq	00:10:32	1
1342827	99	50	43,5	cyclictest	1507589	-21	aten_r7power_en	23:40:15	0
1342827	99	50	42,5	cyclictest	958867	-21	kworker/u4:10+events_unbound	19:34:46	0
1342827	99	50	41,6	cyclictest	1516226	-21	latency_hist	23:50:01	0
1342827	99	50	40,5	cyclictest	0	-21	swapper/0	21:35:13	0
1342827	99	50	40,5	cyclictest	0	-21	swapper/0	21:35:13	0
1342828	99	49	40,6	cyclictest	0	-21	swapper/1	22:55:28	1
1342828	99	49	38,8	cyclictest	1512770	-21	ld	23:45:36	1
1342828	99	49	38,6	cyclictest	1361828	-21	timerandwakeup	20:20:40	1
1342828	99	49	37,9	cyclictest	1482178	-21	timerandwakeup	23:10:38	1
1342828	99	49	3,40	cyclictest	1415287	-21	ssh	21:55:30	1
1342827	99	49	41,6	cyclictest	1468069	-21	/usr/sbin/munin	22:55:16	0
1342827	99	49	41,5	cyclictest	1446976	-21	unixbench_singl	22:30:39	0
1342827	99	49	29,6	cyclictest	0	-21	swapper/0	21:50:27	0
1342827	99	49	19,17	cyclictest	15	1	ktimers/0	00:14:54	0
1342828	99	48	43,3	cyclictest	1452630	-21	kworker/u4:1+events_unbound	23:03:09	1
1342828	99	48	41,5	cyclictest	1353665	-21	gltestperf	19:50:20	1
1342828	99	48	40,5	cyclictest	1401242	-21	wget	21:40:16	1
1342828	99	48	38,8	cyclictest	1368262	-21	switchtime	20:45:35	1
1342828	99	48	37,7	cyclictest	1358223	-21	modprobe	20:10:00	1
1342828	99	48	36,10	cyclictest	1360799	-21	munin-run	20:20:00	1
1342828	99	48	36,10	cyclictest	1360799	-21	munin-run	20:20:00	1
1342828	99	48	14,9	cyclictest	0	-21	swapper/1	20:40:34	1
1342827	99	48	42,4	cyclictest	1527391	-21	kworker/u4:0+events_unbound	00:37:00	0
1342827	99	48	41,6	cyclictest	1518459	-21	kworker/u4:1+events_unbound	23:59:30	0
1342827	99	48	41,5	cyclictest	1478884	-21	kworker/u4:2+events_unbound	23:09:00	0
1342827	99	48	38,6	cyclictest	1552825	-21	unixbench_singl	00:30:42	0
1342828	99	47	40,5	cyclictest	1526240	-21	timerwakeupswit	00:00:39	1
1342828	99	47	40,5	cyclictest	1410026	-21	acpi	21:50:11	1
1342828	99	47	40,5	cyclictest	1349205	-21	cut	19:35:00	1
1342828	99	47	38,6	cyclictest	1447003	-21	unixbench_singl	22:30:39	1
1342828	99	47	32,9	cyclictest	0	-21	swapper/1	22:05:26	1
1342827	99	47	38,7	cyclictest	1423940	-21	fschecks_time	22:05:20	0
1342827	99	47	27,18	cyclictest	1406759	-21	timerwakeupswit	21:45:41	0
1342828	99	46	38,6	cyclictest	1372348	-21	systemd	21:02:48	1
1342828	99	46	36,6	cyclictest	1355817	-21	latency_hist	20:00:02	1
1342828	99	46	35,7	cyclictest	1346854	-21	aten2__	19:25:14	1
1342828	99	46	30,12	cyclictest	0	-21	swapper/1	19:40:26	1
1342828	99	46	30,11	cyclictest	0	-21	swapper/1	21:15:27	1
1342827	99	46	35,8	cyclictest	1392037	-21	/usr/sbin/munin	21:30:12	0
1342827	99	46	34,10	cyclictest	256	50	irq/23-42890000.ethernet	22:40:29	0
1342828	99	45	37,6	cyclictest	1494641	-21	fschecks_count	23:25:21	1
1342828	99	45	36,7	cyclictest	1454399	-21	latency_hist	22:40:01	1
1342828	99	45	36,7	cyclictest	1397776	-21	unixbench-2d	21:35:41	1
1342828	99	45	36,7	cyclictest	1397776	-21	unixbench-2d	21:35:41	1
1342828	99	45	35,8	cyclictest	1369120	-21	gltestperf	20:50:19	1
1342827	99	45	38,5	cyclictest	1347894	-21	kworker/u4:17+events_unbound	20:09:01	0
1342827	99	45	35,8	cyclictest	1473277	-21	processes	23:00:42	0
1342828	99	44	37,5	cyclictest	1420210	-21	/usr/sbin/munin	22:00:39	1
1342828	99	44	35,6	cyclictest	1359291	-21	timerwakeupswit	20:10:37	1
1342828	99	44	35,5	cyclictest	1332708	-21	kworker/u4:6-xprtiod	19:40:01	1
1342828	99	44	32,8	cyclictest	0	-21	swapper/1	21:20:27	1
1342827	99	44	37,5	cyclictest	1352414	-21	gltestperf	19:45:21	0
1342827	99	44	31,10	cyclictest	19	1	rcuc/0	19:35:14	0
1342827	99	44	16,6	cyclictest	17	1	rcu_preempt	00:20:31	0
1342827	99	44	12,5	cyclictest	17	1	rcu_preempt	19:20:34	0
1342828	99	43	32,7	cyclictest	0	-21	swapper/1	20:35:33	1
1342828	99	43	27,11	cyclictest	1371095	-21	munin-run	21:00:01	1
1342827	99	43	35,6	cyclictest	1354961	-21	gltestperf	19:55:19	0
1342827	99	43	34,5	cyclictest	1504081	-21	mailstats	23:35:38	0
1342828	99	42	35,5	cyclictest	1543145	-21	gltestperf	00:20:20	1
1342827	99	42	35,5	cyclictest	1367240	-21	kworker/u4:17+events_unbound	20:48:59	0
1342828	99	41	33,6	cyclictest	1363652	-21	wget	20:30:17	1
1342828	99	41	31,6	cyclictest	0	-21	swapper/1	19:10:39	1
1342828	99	40	33,5	cyclictest	1352666	-21	sshd	19:45:34	1
1342828	99	39	32,4	cyclictest	0	-21	swapper/1	19:20:00	1
1342828	99	39	29,7	cyclictest	0	-21	swapper/1	19:10:01	1
1342828	99	39	26,11	cyclictest	1356720	-21	timerandwakeup	20:00:37	1
1342828	99	38	30,5	cyclictest	1345544	-21	acpi	19:20:12	1
1342828	99	38	29,6	cyclictest	1342825	-21	cyclictest	20:25:27	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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