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 Thu Jun 18, 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
2173609	99	121	111,7	cyclictest	2174920	-21	kworker/u4:7+events_unbound	07:50:00	1
2173608	99	113	104,7	cyclictest	2312471	-21	kworker/u4:6+events_unbound	11:15:45	0
2173608	99	97	88,7	cyclictest	2195543	-21	kworker/u4:15+events_unbound	08:35:17	0
2173609	99	92	84,6	cyclictest	2233361	-21	kworker/u4:2+events_unbound	09:45:28	1
2173608	99	90	81,6	cyclictest	2360670	-21	kworker/u4:2+events_unbound	12:30:58	0
2173608	99	84	4,40	cyclictest	37	-21	kcompactd0	10:45:34	0
2173608	99	83	14,31	cyclictest	2173607	-21	dpkg	07:10:00	0
2173609	99	82	71,8	cyclictest	2272975	-21	kworker/u4:2+events_unbound	10:30:35	1
2173608	99	77	68,6	cyclictest	2316947	-21	kworker/u4:5+events_unbound	11:40:51	0
2173608	99	73	37,7	cyclictest	2333116	-21	/usr/sbin/munin	11:35:33	0
2173608	99	69	58,8	cyclictest	2207265	-21	kworker/u4:16+events_unbound	09:35:27	0
2173608	99	68	54,10	cyclictest	2308025	-21	kworker/u4:0+events_unbound	11:33:00	0
2173608	99	66	57,6	cyclictest	2365093	-21	kworker/u4:5+events_unbound	12:15:56	0
2173608	99	66	46,14	cyclictest	53	-21	kswapd0	11:20:09	0
2173608	99	64	55,6	cyclictest	2375810	-21	ssh	12:25:15	0
2173608	99	61	44,10	cyclictest	2173582	-21	apt-get	07:10:09	0
2173608	99	61	35,19	cyclictest	256	50	irq/23-42890000.ethernet	11:10:28	0
2173608	99	61	30,27	cyclictest	256	50	irq/23-42890000.ethernet	08:25:10	0
2173608	99	59	54,3	cyclictest	2351816	-21	kworker/u4:1+events_unbound	12:05:54	0
2173608	99	59	50,7	cyclictest	2316945	-21	kworker/u4:1+events_unbound	11:30:00	0
2173609	99	58	48,8	cyclictest	2356269	-21	kworker/u4:9+events_unbound	12:20:56	1
2173609	99	58	46,8	cyclictest	2316946	-21	kworker/u4:2+events_unbound	11:50:52	1
2173608	99	58	52,4	cyclictest	2301399	-21	latency_hist	11:00:02	0
2173609	99	57	49,6	cyclictest	2231681	-21	/usr/sbin/munin	09:40:20	1
2173609	99	57	48,7	cyclictest	2321377	-21	kworker/u4:10+events_unbound	11:25:47	1
2173608	99	57	35,16	cyclictest	0	-21	swapper/0	08:40:10	0
2173608	99	56	46,7	cyclictest	2305954	-21	dpkg	11:05:12	0
2173608	99	56	44,10	cyclictest	2249330	-21	cut	10:00:21	0
2173609	99	55	15,16	cyclictest	2329574	-21	ssh	11:31:11	1
2173608	99	55	45,6	cyclictest	2236747	-21	/usr/sbin/munin	09:45:36	0
2173608	99	55	43,9	cyclictest	2220658	-21	kworker/u4:9+events_unbound	09:30:27	0
2173608	99	55	2,42	cyclictest	2346163	-21	ntpq	11:50:31	0
2173609	99	54	21,19	cyclictest	0	-21	swapper/1	12:25:22	1
2173609	99	54	16,23	cyclictest	2384271	-21	latency_hist	12:35:02	1
2173608	99	54	36,6	cyclictest	256	50	irq/23-42890000.ethernet	09:15:10	0
2173609	99	53	46,5	cyclictest	2258095	-21	/usr/sbin/munin	10:10:20	1
2173609	99	53	17,11	cyclictest	2291912	-21	ssh	10:49:01	1
2173608	99	53	46,5	cyclictest	2154978	-21	kworker/u4:3+events_unbound	09:05:01	0
2173608	99	53	46,5	cyclictest	2154978	-21	kworker/u4:3+events_unbound	09:05:01	0
2173608	99	53	43,8	cyclictest	2183968	-21	systemd	07:49:58	0
2173608	99	53	35,16	cyclictest	2388520	-21	sh	12:40:00	0
2173609	99	52	42,7	cyclictest	0	-21	swapper/1	10:20:31	1
2173609	99	52	42,7	cyclictest	0	-21	swapper/1	10:20:31	1
2173609	99	52	18,7	cyclictest	2280393	-21	ntpq	10:35:26	1
2173609	99	52	15,11	cyclictest	2317045	-21	ssh	11:17:13	1
2173609	99	52	13,15	cyclictest	2219659	-21	ssh	09:25:59	1
2173609	99	52	13,14	cyclictest	2270817	-21	ssh	10:25:11	1
2173609	99	52	12,15	cyclictest	2365650	-21	ssh	12:13:14	1
2173609	99	52	12,14	cyclictest	2249770	-21	ssh	10:00:38	1
2173608	99	52	42,7	cyclictest	2189297	-21	aten2__	08:10:15	0
2173608	99	52	39,10	cyclictest	2280964	-21	unixbench_singl	10:35:39	0
2173609	99	51	45,4	cyclictest	2184898	-21	sendmail_mailqu	07:50:36	1
2173609	99	51	44,5	cyclictest	2355326	-21	unixbench_singl	12:00:41	1
2173609	99	51	44,5	cyclictest	2355326	-21	unixbench_singl	12:00:41	1
2173609	99	51	44,5	cyclictest	2179250	-21	df_abs	07:30:16	1
2173609	99	51	44,5	cyclictest	2179250	-21	df_abs	07:30:16	1
2173609	99	51	15,11	cyclictest	2224947	-21	ssh	09:32:24	1
2173609	99	51	14,11	cyclictest	2287390	-21	ssh	10:43:48	1
2173609	99	51	14,10	cyclictest	2196383	-21	ntpq	08:35:32	1
2173609	99	51	13,14	cyclictest	2369422	-21	ssh	12:17:18	1
2173609	99	51	11,14	cyclictest	2309726	-21	ssh	11:09:30	1
2173608	99	51	43,6	cyclictest	2214826	-21	/usr/sbin/munin	09:20:38	0
2173608	99	51	43,6	cyclictest	2198658	-21	fschecks_count	08:45:18	0
2173608	99	51	42,7	cyclictest	2178865	-21	systemd	07:29:55	0
2173609	99	50	43,5	cyclictest	2178853	-21	kworker/u4:4+events_unbound	08:15:11	1
2173609	99	50	13,11	cyclictest	2343844	-21	ssh	11:48:01	1
2173609	99	50	13,11	cyclictest	2313130	-21	ssh	11:12:59	1
2173609	99	50	13,11	cyclictest	2263797	-21	ssh	10:16:20	1
2173609	99	50	12,14	cyclictest	2294646	-21	ssh	10:51:28	1
2173609	99	50	12,14	cyclictest	2248098	-21	ssh	09:59:23	1
2173609	99	50	12,13	cyclictest	2360547	-21	ssh	12:07:00	1
2173609	99	50	12,11	cyclictest	2229325	-21	ssh	09:37:27	1
2173609	99	50	11,15	cyclictest	2351134	-21	ssh	11:55:52	1
2173608	99	50	43,5	cyclictest	2292905	-21	aten_r7power_cu	10:50:15	0
2173608	99	50	32,11	cyclictest	2251214	-21	kworker/u4:10-rpciod	10:15:18	0
2173609	99	49	12,13	cyclictest	2206498	-21	ssh	09:11:03	1
2173608	99	49	43,4	cyclictest	2261773	-21	latency_hist	10:15:01	0
2173608	99	49	42,5	cyclictest	2254181	-21	proc_pri	10:05:37	0
2173608	99	49	42,5	cyclictest	2244765	-21	fschecks_count	09:55:20	0
2173609	99	48	44,3	cyclictest	27	1	ktimers/1	12:36:50	1
2173609	99	48	41,5	cyclictest	2297541	-21	grep	10:55:19	1
2173609	99	48	41,5	cyclictest	0	-21	swapper/1	09:50:37	1
2173609	99	48	13,12	cyclictest	1073	-21	snmpd	08:32:51	1
2173609	99	48	13,12	cyclictest	1073	-21	snmpd	08:32:51	1
2173609	99	48	10,14	cyclictest	2338293	-21	ssh	11:41:05	1
2173608	99	48	6,32	cyclictest	256	50	irq/23-42890000.ethernet	11:45:33	0
2173608	99	48	40,5	cyclictest	2372256	-21	ssh	12:20:31	0
2173609	99	47	9,13	cyclictest	2256106	-21	ssh	10:08:06	1
2173609	99	47	40,5	cyclictest	2213874	-21	/usr/sbin/munin	09:20:16	1
2173609	99	47	38,7	cyclictest	2209740	-21	fschecks_count	09:15:24	1
2173609	99	47	10,13	cyclictest	2334943	-21	ssh	11:37:42	1
2173608	99	47	41,4	cyclictest	2175898	-21	cat	07:15:39	0
2173608	99	47	40,5	cyclictest	2187473	-21	cat	08:00:35	0
2173608	99	47	39,6	cyclictest	2231524	-21	/usr/sbin/munin	09:40:17	0
2173608	99	47	37,7	cyclictest	2266529	-21	aten_r7power_cu	10:20:15	0
2173608	99	47	37,7	cyclictest	2266529	-21	aten_r7power_cu	10:20:15	0
2173609	99	46	8,13	cyclictest	2175699	-21	ld	07:15:29	1
2173609	99	46	38,6	cyclictest	2202041	-21	sendmail	09:00:00	1
2173608	99	46	38,5	cyclictest	2185474	-21	aten_r7power_cu	07:55:15	0
2173608	99	46	37,7	cyclictest	2176440	-21	aten2__	07:20:14	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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