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 Tue Jan 13, 2026 12:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1154427	99	239	225,9	cyclictest	1331940	-21	kworker/u4:8+events_unbound	12:10:22	0
1154428	99	102	85,7	cyclictest	1242112	-21	kworker/u4:3+events_unbound	10:49:56	1
1154428	99	97	88,7	cyclictest	1323363	-21	kworker/u4:13+events_unbound	11:55:10	1
1154428	99	97	86,8	cyclictest	54	-21	kswapd0	11:05:01	1
1154427	99	88	74,5	cyclictest	1242113	-21	kworker/u4:4+events_unbound	10:24:51	0
1154427	99	88	74,5	cyclictest	1242113	-21	kworker/u4:4+events_unbound	10:24:51	0
1154427	99	86	76,7	cyclictest	1185409	-21	xargs	09:10:40	0
1154428	99	84	74,8	cyclictest	1276327	-21	kworker/u4:3+events_unbound	11:10:02	1
1154428	99	83	74,7	cyclictest	1327652	-21	kworker/u4:14+events_unbound	12:00:10	1
1154428	99	82	73,7	cyclictest	1340482	-21	kworker/u4:3+events_unbound	12:25:15	1
1154428	99	80	72,6	cyclictest	1153167	-21	kworker/u4:3+events_unbound	07:54:21	1
1154428	99	75	69,4	cyclictest	1153168	-21	kworker/u4:4+events_unbound	07:15:01	1
1154428	99	73	64,7	cyclictest	1233330	-21	kworker/u4:2+events_unbound	10:29:52	1
1154427	99	73	65,6	cyclictest	1190733	-21	kworker/u4:2+events_unbound	09:39:38	0
1154428	99	72	66,4	cyclictest	1255141	-21	kworker/u4:14+events_unbound	10:34:53	1
1154428	99	72	66,4	cyclictest	1255141	-21	kworker/u4:14+events_unbound	10:34:53	1
1154428	99	72	61,8	cyclictest	1344791	-21	kworker/u4:4+events_unbound	12:20:00	1
1154428	99	72	56,6	cyclictest	1302353	-21	kworker/u4:4+events_unbound	11:30:07	1
1154428	99	71	64,5	cyclictest	1153168	-21	kworker/u4:4+events_unbound	07:29:18	1
1154428	99	70	64,4	cyclictest	1233330	-21	kworker/u4:2+events_unbound	10:09:49	1
1154427	99	70	51,16	cyclictest	1261641	-21	fschecks_count	10:40:19	0
1154428	99	69	61,6	cyclictest	1293110	-21	kworker/u4:7+events_unbound	11:40:07	1
1154428	99	68	61,5	cyclictest	1298051	-21	kworker/u4:2+events_unbound	11:25:05	1
1154428	99	66	58,6	cyclictest	1242114	-21	kworker/u4:7+events_unbound	10:19:52	1
1154428	99	66	57,5	cyclictest	1150757	-21	kworker/u4:5+events_unbound	07:35:02	1
1154428	99	66	51,7	cyclictest	1194152	-21	kworker/u4:4+events_unbound	09:25:01	1
1154428	99	64	55,6	cyclictest	1145866	-21	kworker/u4:15+events_unbound	07:44:19	1
1154428	99	64	54,7	cyclictest	1158274	-21	kworker/u4:10+events_unbound	09:09:34	1
1154428	99	64	53,9	cyclictest	54	-21	kswapd0	12:10:14	1
1154428	99	64	47,7	cyclictest	1155724	-21	kworker/u4:7+events_unbound	08:14:25	1
1154427	99	64	57,5	cyclictest	0	-21	swapper/0	11:15:30	0
1154428	99	63	48,6	cyclictest	1153167	-21	kworker/u4:3+events_unbound	07:40:01	1
1154427	99	63	54,7	cyclictest	1211868	-21	kworker/u4:8+events_unbound	10:04:46	0
1154428	99	61	53,5	cyclictest	1158273	-21	kworker/u4:8+events_unbound	08:20:01	1
1154428	99	61	52,5	cyclictest	1188738	-21	wget	09:15:14	1
1154427	99	61	54,5	cyclictest	1190733	-21	kworker/u4:2+events_unbound	09:34:38	0
1154427	99	61	53,6	cyclictest	1190733	-21	kworker/u4:2+events_unbound	09:54:43	0
1154428	99	60	50,7	cyclictest	1226852	-21	dpkg	10:00:11	1
1154428	99	59	51,5	cyclictest	1211229	-21	kworker/u4:7+events_unbound	09:45:02	1
1154428	99	59	50,7	cyclictest	1175051	-21	kworker/u4:4+events_unbound	09:05:00	1
1154428	99	58	40,14	cyclictest	1265233	-21	ssh	10:44:56	1
1154427	99	58	51,5	cyclictest	1	-21	systemd	11:05:01	0
1154427	99	58	50,6	cyclictest	1158274	-21	kworker/u4:10+events_unbound	09:15:03	0
1154427	99	58	30,22	cyclictest	54	-21	kswapd0	10:25:13	0
1154428	99	56	47,7	cyclictest	314	-21	systemd-journal	11:50:08	1
1154427	99	56	48,6	cyclictest	1242113	-21	kworker/u4:4+events_unbound	10:32:13	0
1154427	99	56	48,6	cyclictest	1242113	-21	kworker/u4:4+events_unbound	10:32:13	0
1154427	99	56	47,7	cyclictest	388	-21	dbus-daemon	11:25:04	0
1154427	99	56	39,14	cyclictest	1304852	-21	ssh	11:30:28	0
1154427	99	56	33,21	cyclictest	1343017	-21	ntp_kernel_pll_	12:15:30	0
1154428	99	55	47,6	cyclictest	1211229	-21	kworker/u4:7+events_unbound	09:57:59	1
1154428	99	55	44,8	cyclictest	37	-21	kcompactd0	10:50:14	1
1154428	99	55	44,8	cyclictest	1235737	-21	aten_r7power_po	10:10:21	1
1154427	99	55	47,6	cyclictest	933734	-21	kworker/u4:2+events_unbound	07:19:16	0
1154427	99	55	47,5	cyclictest	0	-21	swapper/0	10:45:11	0
1154427	99	55	46,7	cyclictest	1165922	-21	kworker/u4:20+events_unbound	08:54:33	0
1154428	99	54	48,4	cyclictest	1207454	-21	kworker/u4:5+events_unbound	09:37:59	1
1154427	99	54	45,7	cyclictest	1276329	-21	kworker/u4:5+events_unbound	11:11:44	0
1154428	99	53	46,5	cyclictest	1201311	-21	gltestperf	09:30:23	1
1154427	99	53	41,9	cyclictest	1278221	-21	grep	11:00:00	0
1154428	99	52	43,7	cyclictest	1257798	-21	/usr/sbin/munin	10:35:33	1
1154428	99	52	43,7	cyclictest	1257798	-21	/usr/sbin/munin	10:35:33	1
1154427	99	52	44,6	cyclictest	1319090	-21	kworker/u4:0+events_unbound	11:50:02	0
1154427	99	52	33,5	cyclictest	1210452	-21	grep	09:40:40	0
1154427	99	52	33,5	cyclictest	1210452	-21	grep	09:40:40	0
1154428	99	51	44,5	cyclictest	1352816	-21	kworker/u4:8+events_unbound	12:36:00	1
1154427	99	51	44,5	cyclictest	1153167	-21	kworker/u4:3+events_unbound	07:49:21	0
1154427	99	51	43,6	cyclictest	1154423	-21	cyclictest	11:05:35	0
1154427	99	51	42,7	cyclictest	1289366	-21	kworker/u4:1+events_unbound	11:20:04	0
1154427	99	51	39,9	cyclictest	1357086	-21	kworker/u4:1+events_unbound	12:35:17	0
1154427	99	51	31,17	cyclictest	0	-21	swapper/0	12:05:27	0
1154428	99	50	43,5	cyclictest	1190733	-21	kworker/u4:2+events_unbound	09:40:59	1
1154428	99	50	43,5	cyclictest	1190733	-21	kworker/u4:2+events_unbound	09:40:59	1
1154428	99	50	42,6	cyclictest	1255139	-21	kworker/u4:11+events_unbound	10:56:44	1
1154427	99	50	44,4	cyclictest	0	-21	swapper/0	10:50:31	0
1154427	99	50	43,5	cyclictest	1313262	-21	uname	11:40:22	0
1154427	99	50	43,5	cyclictest	1162081	-21	sh	07:40:00	0
1154427	99	50	30,18	cyclictest	1180473	-21	aten_r7power_po	08:55:16	0
1154428	99	49	42,5	cyclictest	1172547	-21	systemd	08:24:26	1
1154428	99	49	41,6	cyclictest	1165920	-21	kworker/u4:18+events_unbound	08:40:01	1
1154428	99	49	41,5	cyclictest	1314798	-21	kworker/u4:12+events_unbound	11:46:00	1
1154428	99	49	40,7	cyclictest	1276329	-21	kworker/u4:5+events_unbound	11:15:34	1
1154427	99	49	42,5	cyclictest	1346609	-21	aten_r7power_cu	12:20:15	0
1154427	99	49	42,5	cyclictest	1242111	-21	kworker/u4:1+events_unbound	10:20:01	0
1154427	99	49	42,5	cyclictest	1186248	-21	kworker/u4:3+events_unbound	09:28:58	0
1154427	99	49	36,10	cyclictest	0	-21	swapper/0	08:45:01	0
1154427	99	49	30,17	cyclictest	0	-21	swapper/0	10:10:23	0
1154428	99	48	41,5	cyclictest	1334186	-21	grep	12:05:17	1
1154428	99	48	37,8	cyclictest	0	-21	swapper/1	11:40:01	1
1154427	99	48	41,5	cyclictest	1172577	-21	munin-plugin-st	08:25:00	0
1154427	99	48	37,9	cyclictest	54	-21	kswapd0	11:50:08	0
1154427	99	48	27,18	cyclictest	255	50	irq/23-42890000.ethernet	11:35:17	0
1154427	99	48	25,20	cyclictest	0	-21	swapper/0	07:14:59	0
1154428	99	47	40,5	cyclictest	1348512	-21	kworker/u4:9+events_unbound	12:30:17	1
1154428	99	47	40,5	cyclictest	1218358	-21	cpu	09:50:17	1
1154428	99	47	38,7	cyclictest	1346574	-21	aten2__	12:20:14	1
1154428	99	47	36,7	cyclictest	1168489	-21	unixbench_singl	08:00:36	1
1154428	99	47	36,7	cyclictest	0	-21	swapper/1	11:05:19	1
1154427	99	47	29,16	cyclictest	1176459	-21	sendmail	08:40:00	0
1154428	99	46	39,5	cyclictest	1197052	-21	ldconfig	09:25:20	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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