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 376 highest latencies:

System rack7slot2.osadl.org (updated Thu Feb 19, 2026 12:44:10)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2018969	99	123	108,6	cyclictest	2137722	-21	kworker/u4:13+events_unbound	10:56:01	0
2018969	99	105	96,7	cyclictest	2159123	-21	kworker/u4:9+events_unbound	11:26:05	0
2018969	99	100	91,7	cyclictest	2020183	-21	kworker/u4:11+events_unbound	07:40:13	0
2018969	99	92	85,5	cyclictest	2044445	-21	kworker/u4:4+events_unbound	09:05:45	0
2018969	99	91	80,9	cyclictest	2086820	-21	kworker/u4:4+events_unbound	10:10:53	0
2018969	99	85	78,5	cyclictest	2171993	-21	kworker/u4:15+events_unbound	11:41:06	0
2018969	99	82	72,6	cyclictest	2179980	-21	kworker/u4:10+events_unbound	11:56:10	0
2018970	99	78	40,35	cyclictest	2131893	-21	cut	10:45:19	1
2018970	99	77	67,7	cyclictest	2150599	-21	kworker/u4:1+events_unbound	12:01:09	1
2018970	99	76	36,5	cyclictest	2162143	-21	threads	11:20:37	1
2018970	99	74	65,7	cyclictest	2150598	-21	kworker/u4:0+events_unbound	11:30:01	1
2018970	99	74	65,6	cyclictest	2022728	-21	kworker/u4:4+events_unbound	08:05:28	1
2018970	99	73	68,3	cyclictest	2031628	-21	kworker/u4:19+events_unbound	08:55:44	1
2018970	99	73	37,5	cyclictest	2178201	-21	df_abs	11:40:17	1
2018969	99	73	65,6	cyclictest	2048237	-21	kworker/u4:3+events_unbound	09:25:48	0
2018970	99	72	38,5	cyclictest	2123747	-21	ldconfig	10:35:26	1
2018969	99	71	64,5	cyclictest	2192803	-21	kworker/u4:8+events_unbound	12:36:15	0
2018969	99	71	63,6	cyclictest	2158506	-21	kworker/u4:8+events_unbound	11:17:01	0
2018970	99	69	35,7	cyclictest	0	-21	swapper/1	09:30:31	1
2018970	99	69	34,6	cyclictest	2084580	-21	aten_r7power_en	09:50:13	1
2018970	99	68	60,5	cyclictest	2112443	-21	kworker/u4:0+events_unbound	10:30:54	1
2018970	99	68	59,7	cyclictest	2018903	-21	kworker/u4:9+events_unbound	07:20:11	1
2018969	99	68	57,7	cyclictest	2080514	-21	tune2fs	09:45:17	0
2018970	99	67	26,10	cyclictest	0	-21	swapper/1	08:25:18	1
2018969	99	66	59,5	cyclictest	2039312	-21	kworker/u4:7+events_unbound	08:30:39	0
2018970	99	65	5,20	cyclictest	2049526	-21	diskmemload	12:05:24	1
2018969	99	65	57,6	cyclictest	2137723	-21	kworker/u4:14+events_unbound	11:06:00	0
2018970	99	63	55,5	cyclictest	2111749	-21	sshd	10:20:52	1
2018969	99	62	54,5	cyclictest	2110273	-21	/usr/sbin/munin	10:20:14	0
2018969	99	61	54,5	cyclictest	2192803	-21	kworker/u4:8+events_unbound	12:30:02	0
2018969	99	58	5,40	cyclictest	2127972	-21	ssh	10:40:23	0
2018969	99	58	48,7	cyclictest	1999743	-21	kworker/u4:6+events_unbound	07:30:13	0
2018969	99	58	43,7	cyclictest	2154833	-21	kworker/u4:5+events_unbound	11:13:22	0
2018970	99	57	41,11	cyclictest	54	-21	kswapd0	10:50:15	1
2018969	99	57	50,5	cyclictest	2016405	-21	kworker/u4:5+events_unbound	08:45:43	0
2018969	99	57	49,6	cyclictest	2144921	-21	/usr/sbin/munin	11:00:28	0
2018969	99	57	48,7	cyclictest	2121112	-21	kworker/u4:2+events_unbound	10:36:59	0
2018969	99	57	40,6	cyclictest	2041823	-21	kworker/u4:14+events_unbound	08:45:00	0
2018969	99	57	2,43	cyclictest	2036721	-21	apt-get	08:20:10	0
2018970	99	56	48,6	cyclictest	2029118	-21	kworker/u4:16+events_unbound	08:10:31	1
2018969	99	55	46,7	cyclictest	2044444	-21	kworker/u4:2+events_unbound	09:30:02	0
2018969	99	55	44,9	cyclictest	388	-21	dbus-daemon	09:40:47	0
2018969	99	55	41,10	cyclictest	37	-21	kcompactd0	10:15:13	0
2018970	99	54	46,5	cyclictest	2144125	-21	apt-key	11:00:01	1
2018969	99	54	46,6	cyclictest	2192803	-21	kworker/u4:8+events_unbound	12:27:59	0
2018969	99	54	46,6	cyclictest	2184202	-21	kworker/u4:2+events_unbound	11:48:44	0
2018969	99	54	46,6	cyclictest	2044445	-21	kworker/u4:4+events_unbound	08:50:44	0
2018969	99	54	46,6	cyclictest	0	-21	swapper/0	10:50:14	0
2018969	99	54	43,7	cyclictest	54	-21	kswapd0	10:25:09	0
2018969	99	54	41,6	cyclictest	2095589	-21	kworker/u4:2+events_unbound	10:02:43	0
2018970	99	53	44,7	cyclictest	2192800	-21	kworker/u4:5+events_unbound	12:11:12	1
2018970	99	53	44,6	cyclictest	2050246	-21	tail	09:10:18	1
2018969	99	53	46,5	cyclictest	2192797	-21	kworker/u4:2+events_unbound	12:13:43	0
2018969	99	53	45,6	cyclictest	2072295	-21	diskmemload	09:35:29	0
2018969	99	53	45,6	cyclictest	2072295	-21	diskmemload	09:35:28	0
2018969	99	53	44,6	cyclictest	0	-21	swapper/0	12:05:31	0
2018969	99	53	43,8	cyclictest	2215835	-21	grep	12:25:02	0
2018969	99	53	41,9	cyclictest	2119921	-21	timerandwakeup	10:30:38	0
2018969	99	53	40,6	cyclictest	2086823	-21	kworker/u4:11+events_unbound	09:54:43	0
2018969	99	53	33,18	cyclictest	2035940	-21	fschecks_time	08:15:18	0
2018970	99	52	45,5	cyclictest	2099339	-21	kworker/u4:6+events_unbound	10:28:00	1
2018970	99	52	41,8	cyclictest	54	-21	kswapd0	11:45:12	1
2018969	99	52	45,5	cyclictest	2163413	-21	kworker/u4:8+events_unbound	11:22:59	0
2018969	99	52	38,7	cyclictest	2163414	-21	kworker/u4:10+events_unbound	11:31:03	0
2018970	99	51	44,5	cyclictest	2039312	-21	kworker/u4:7+events_unbound	08:40:40	1
2018970	99	51	44,5	cyclictest	2029555	-21	fschecks_count	07:50:18	1
2018970	99	51	44,5	cyclictest	2029555	-21	fschecks_count	07:50:17	1
2018970	99	51	44,5	cyclictest	2023341	-21	gltestperf	07:25:19	1
2018970	99	51	43,5	cyclictest	2157993	-21	unixbench-2d	11:15:36	1
2018970	99	51	42,7	cyclictest	2031628	-21	kworker/u4:19+events_unbound	09:40:49	1
2018969	99	51	41,7	cyclictest	2194835	-21	apt-get	12:00:11	0
2018970	99	50	42,6	cyclictest	2020358	-21	systemd	07:15:09	1
2018970	99	50	40,7	cyclictest	2173742	-21	dpkg	11:35:12	1
2018969	99	50	43,5	cyclictest	2048237	-21	kworker/u4:3+events_unbound	09:10:03	0
2018969	99	50	41,6	cyclictest	2034990	-21	sd-accept	08:10:29	0
2018969	99	50	38,6	cyclictest	2150598	-21	kworker/u4:0+events_unbound	11:35:12	0
2018970	99	49	38,8	cyclictest	2150598	-21	kworker/u4:0-rpciod	11:10:30	1
2018970	99	49	38,6	cyclictest	0	-21	swapper/1	10:00:19	1
2018969	99	49	42,5	cyclictest	2078083	-21	kworker/u4:8+events_unbound	10:00:00	0
2018969	99	49	39,7	cyclictest	2054616	-21	/usr/sbin/munin	09:15:20	0
2018969	99	49	39,7	cyclictest	2054616	-21	/usr/sbin/munin	09:15:20	0
2018970	99	48	41,4	cyclictest	2063220	-21	fschecks_count	09:25:18	1
2018970	99	48	39,7	cyclictest	2106166	-21	aten_r7power_vo	10:15:17	1
2018970	99	48	34,8	cyclictest	2049506	-21	modprobe	09:10:01	1
2018969	99	48	41,5	cyclictest	2188510	-21	kworker/u4:3+events_unbound	11:53:01	0
2018969	99	48	40,6	cyclictest	2196494	-21	kworker/u4:9+events_unbound	12:19:00	0
2018970	99	47	40,5	cyclictest	2047443	-21	fschecks_count	09:00:20	1
2018970	99	47	39,6	cyclictest	2191826	-21	unixbench-2d	11:55:43	1
2018969	99	47	41,4	cyclictest	2097963	-21	if_eth0	10:05:22	0
2018969	99	47	40,5	cyclictest	2031628	-21	kworker/u4:19+events_unbound	09:22:00	0
2018969	99	47	39,6	cyclictest	2034198	-21	munin-plugin-st	08:10:01	0
2018970	99	46	39,5	cyclictest	2224653	-21	df_abs	12:35:16	1
2018970	99	46	36,6	cyclictest	0	-21	swapper/1	07:15:00	1
2018969	99	46	38,6	cyclictest	2021762	-21	aten_r7power_po	07:20:16	0
2018969	99	46	37,7	cyclictest	2135648	-21	latency_hist	10:50:02	0
2018969	99	46	31,5	cyclictest	2020184	-21	kworker/u4:12+events_unbound	07:37:44	0
2018970	99	45	39,4	cyclictest	2149085	-21	/usr/sbin/munin	11:05:24	1
2018970	99	45	35,7	cyclictest	2033059	-21	latency_hist	08:05:01	1
2018970	99	45	27,6	cyclictest	2192803	-21	kworker/u4:8+events_unbound	12:21:21	1
2018969	99	45	39,4	cyclictest	2032111	-21	fschecks_count	08:00:18	0
2018969	99	45	38,5	cyclictest	2023028	-21	aten_r7power_po	07:25:14	0
2018970	99	44	6,30	cyclictest	2144244	-21	/usr/sbin/munin	11:00:11	1
2018970	99	44	38,4	cyclictest	2220884	-21	ntp_kernel_pll_	12:30:27	1
2018970	99	44	37,5	cyclictest	2131277	-21	munin-plugin-st	10:45:00	1
2018970	99	44	36,5	cyclictest	2037308	-21	fschecks_time	08:20:23	1
2018970	99	44	34,6	cyclictest	0	-21	swapper/1	09:55:28	1
2018970	99	44	33,8	cyclictest	0	-21	swapper/1	12:15:34	1
2018970	99	44	32,10	cyclictest	0	-21	swapper/1	08:35:36	1
2018970	99	44	30,11	cyclictest	0	-21	swapper/1	10:10:31	1
2018969	99	44	36,6	cyclictest	2018903	-21	kworker/u4:9+events_unbound	07:49:42	0
2018970	99	43	37,4	cyclictest	2025847	-21	fschecks_time	07:35:18	1
2018970	99	43	36,5	cyclictest	2220040	-21	date	12:30:02	1
2018970	99	43	36,5	cyclictest	2169667	-21	aten_r7power_po	11:30:15	1
2018970	99	43	36,5	cyclictest	2062629	-21	kworker/u4:19	09:24:59	1
2018970	99	43	36,5	cyclictest	2045608	-21	grep	08:50:35	1
2018970	99	43	35,6	cyclictest	2027091	-21	fschecks_count	07:40:18	1
2018970	99	43	35,5	cyclictest	0	-21	swapper/1	10:05:26	1
2018970	99	43	34,6	cyclictest	0	-21	swapper/1	09:15:12	1
2018970	99	43	34,6	cyclictest	0	-21	swapper/1	09:15:12	1
2018969	99	43	30,5	cyclictest	2016405	-21	kworker/u4:5+events_unbound	08:27:44	0
2018970	99	42	32,6	cyclictest	0	-21	swapper/1	09:45:10	1
2018969	99	42	35,5	cyclictest	2046382	-21	kernelversion	08:55:20	0
2018969	99	42	31,9	cyclictest	2020836	-21	if_eth0	07:15:19	0
2018969	99	42	23,7	cyclictest	2030374	-21	kworker/u4:18+events_unbound	07:58:58	0
2018970	99	41	33,6	cyclictest	2071627	-21	aten_r7power_cu	09:35:15	1
2018970	99	41	33,6	cyclictest	2071627	-21	aten_r7power_cu	09:35:15	1
2018970	99	41	32,6	cyclictest	0	-21	swapper/1	11:50:28	1
2018970	99	41	31,7	cyclictest	1999743	-21	kworker/u4:6-xprtiod	07:30:20	1
2018969	99	41	35,4	cyclictest	2035420	-21	kworker/u4:9+events_unbound	09:02:01	0
2018969	99	41	29,9	cyclictest	0	-21	swapper/0	08:40:01	0
2018970	99	40	32,6	cyclictest	2028197	-21	aten_r7power_vo	07:45:16	1
2018970	99	40	31,7	cyclictest	2044202	-21	switchtime	08:45:40	1
2018970	99	40	31,6	cyclictest	0	-21	swapper/1	08:30:19	1
2018969	99	40	32,5	cyclictest	0	-21	swapper/0	07:10:14	0
2018969	99	39	31,6	cyclictest	0	-21	swapper/0	07:50:19	0
2018969	99	39	31,6	cyclictest	0	-21	swapper/0	07:50:19	0
2018970	99	37	27,8	cyclictest	0	-21	swapper/1	07:55:19	1
2018970	99	37	26,9	cyclictest	0	-21	swapper/1	08:15:15	1
2018969	99	31	24,5	cyclictest	0	-21	swapper/0	07:10:02	0
2018970	99	27	20,4	cyclictest	0	-21	swapper/1	07:10:02	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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