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 Mar 31, 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
3303428	99	107	92,6	cyclictest	0	-21	swapper/0	11:35:28	0
3303429	99	99	91,5	cyclictest	3385700	-21	kworker/u4:1+events_unbound	10:09:47	1
3303429	99	89	82,5	cyclictest	3381293	-21	kworker/u4:12+events_unbound	10:29:50	1
3303429	99	89	78,7	cyclictest	3419977	-21	kworker/u4:9+events_unbound	11:04:57	1
3303429	99	71	65,4	cyclictest	3381293	-21	kworker/u4:12+events_unbound	10:45:00	1
3303429	99	69	62,5	cyclictest	3305929	-21	kworker/u4:10+events_unbound	07:20:00	1
3303428	99	68	31,33	cyclictest	256	50	irq/23-42890000.ethernet	08:25:11	0
3303429	99	65	57,6	cyclictest	3471147	-21	perl	11:45:19	1
3303429	99	64	60,3	cyclictest	3322575	-21	kworker/u4:18+events_unbound	08:54:35	1
3303429	99	63	55,6	cyclictest	3455579	-21	kworker/u4:5+events_unbound	11:40:04	1
3303429	99	62	55,5	cyclictest	3307235	-21	kworker/u4:2+events_unbound	07:24:21	1
3303429	99	62	50,9	cyclictest	3488202	-21	systemd	12:05:10	1
3303428	99	62	54,6	cyclictest	3433374	-21	kworker/u4:10+events_unbound	11:05:03	0
3303429	99	61	54,5	cyclictest	3314890	-21	kworker/u4:8+events_unbound	08:00:01	1
3303429	99	60	52,5	cyclictest	3419977	-21	kworker/u4:9+events_unbound	10:49:54	1
3303429	99	59	49,7	cyclictest	3446710	-21	kworker/u4:0+events_unbound	11:30:13	1
3303428	99	59	42,12	cyclictest	53	-21	kswapd0	10:25:11	0
3303429	99	58	50,6	cyclictest	3311050	-21	kworker/u4:2+events_unbound	08:39:31	1
3303429	99	57	50,5	cyclictest	3446710	-21	kworker/u4:0+events_unbound	11:20:05	1
3303429	99	57	48,6	cyclictest	3494926	-21	kworker/u4:1+events_unbound	12:25:13	1
3303428	99	57	38,17	cyclictest	3316218	-21	idleruntime-cro	08:00:01	0
3303429	99	56	48,6	cyclictest	3361191	-21	dpkg	09:40:13	1
3303429	99	56	43,8	cyclictest	3369729	-21	modprobe	09:50:01	1
3303428	99	56	47,6	cyclictest	3479182	-21	cron	11:54:59	0
3303429	99	55	46,5	cyclictest	0	-21	swapper/1	11:05:12	1
3303429	99	55	36,6	cyclictest	3341358	-21	kworker/u4:0+events_unbound	09:34:43	1
3303429	99	54	49,4	cyclictest	3322575	-21	kworker/u4:18+events_unbound	09:10:01	1
3303428	99	54	45,6	cyclictest	3458266	-21	diskmemload	11:30:24	0
3303428	99	54	27,4	cyclictest	15	1	ktimers/0	11:10:27	0
3303429	99	53	46,5	cyclictest	3397651	-21	unixbench_singl	10:20:39	1
3303429	99	53	46,5	cyclictest	3308506	-21	kworker/u4:9+events_unbound	07:44:24	1
3303429	99	53	44,7	cyclictest	3444192	-21	systemd	11:14:58	1
3303429	99	53	42,7	cyclictest	3374559	-21	aten_r7power_cu	09:55:16	1
3303429	99	52	44,5	cyclictest	3444750	-21	cpu	11:15:17	1
3303428	99	52	8,33	cyclictest	256	50	irq/23-42890000.ethernet	12:05:26	0
3303428	99	52	44,6	cyclictest	53	-21	kswapd0	10:00:15	0
3303428	99	52	44,5	cyclictest	3505724	-21	apt-get	12:25:14	0
3303428	99	52	43,6	cyclictest	3307537	-21	aten_r7power_po	07:25:16	0
3303428	99	52	31,19	cyclictest	3320438	-21	fschecks_count	08:15:19	0
3303428	99	52	26,21	cyclictest	3431067	-21	modprobe	11:00:01	0
3303428	99	52	21,9	cyclictest	256	50	irq/23-42890000.ethernet	09:25:37	0
3303428	99	52	20,5	cyclictest	0	-21	swapper/0	12:10:34	0
3303428	99	52	12,16	cyclictest	15	1	ktimers/0	10:20:32	0
3303429	99	51	41,7	cyclictest	3343083	-21	cron	09:20:00	1
3303429	99	51	39,7	cyclictest	0	-21	swapper/1	10:00:37	1
3303429	99	51	38,8	cyclictest	3507652	-21	kworker/u4:6-rpciod	12:30:14	1
3303428	99	51	44,5	cyclictest	3413924	-21	aten2__	10:40:17	0
3303428	99	51	44,5	cyclictest	3341359	-21	kworker/u4:5+events_unbound	09:20:01	0
3303428	99	51	33,16	cyclictest	0	-21	swapper/0	11:15:21	0
3303428	99	51	29,19	cyclictest	0	-21	swapper/0	09:15:01	0
3303428	99	51	17,31	cyclictest	3356761	-21	ssh	09:35:16	0
3303428	99	51	12,12	cyclictest	3331156	-21	ntpq	08:55:32	0
3303429	99	50	43,5	cyclictest	3309738	-21	unixbench_singl	07:30:38	1
3303429	99	50	42,6	cyclictest	3411717	-21	kworker/u4:5+events_unbound	10:50:16	1
3303429	99	50	42,6	cyclictest	1066	-21	snmpd	10:15:01	1
3303429	99	50	41,7	cyclictest	3464457	-21	kworker/u4:12+events_unbound	11:55:08	1
3303429	99	50	33,15	cyclictest	0	-21	swapper/1	11:35:21	1
3303428	99	50	43,5	cyclictest	3449611	-21	ntp_kernel_pll_	11:20:25	0
3303428	99	50	36,11	cyclictest	53	-21	kswapd0	10:20:01	0
3303428	99	50	31,15	cyclictest	53	-21	kswapd0	12:30:08	0
3303429	99	49	42,5	cyclictest	3494927	-21	kworker/u4:2+events_unbound	12:18:42	1
3303429	99	49	42,5	cyclictest	3343483	-21	/usr/sbin/munin	09:20:15	1
3303429	99	49	42,5	cyclictest	3343483	-21	/usr/sbin/munin	09:20:14	1
3303429	99	49	40,6	cyclictest	3392325	-21	fschecks_count	10:15:21	1
3303429	99	49	23,17	cyclictest	3322839	-21	sshd	08:25:11	1
3303428	99	49	34,11	cyclictest	340	-21	systemd-udevd	11:26:41	0
3303428	99	49	10,6	cyclictest	15	1	ktimers/0	12:20:33	0
3303429	99	48	41,5	cyclictest	3407303	-21	kworker/u4:3+events_unbound	10:35:33	1
3303429	99	48	41,5	cyclictest	3371041	-21	diskmemload	09:50:37	1
3303429	99	48	41,5	cyclictest	3356900	-21	aten_r7power_vo	09:35:17	1
3303429	99	48	40,6	cyclictest	3331578	-21	kworker/u4:9+events_unbound	09:04:36	1
3303428	99	48	8,36	cyclictest	3483908	-21	ssh	12:00:14	0
3303428	99	48	42,5	cyclictest	3307235	-21	kworker/u4:2+events_unbound	07:24:43	0
3303428	99	48	39,5	cyclictest	3387982	-21	/usr/sbin/munin	10:10:20	0
3303428	99	48	37,8	cyclictest	3494926	-21	kworker/u4:1-rpciod	12:15:40	0
3303428	99	48	37,8	cyclictest	3311095	-21	munin-run	07:40:00	0
3303428	99	48	33,9	cyclictest	3365303	-21	modprobe	09:45:00	0
3303428	99	48	32,9	cyclictest	3477145	-21	kworker/u4:6-rpciod	11:59:42	0
3303429	99	47	41,4	cyclictest	3322347	-21	threads	08:20:37	1
3303429	99	47	41,4	cyclictest	3322347	-21	threads	08:20:37	1
3303429	99	47	40,5	cyclictest	3454270	-21	mailstats	11:25:37	1
3303429	99	47	39,6	cyclictest	3335106	-21	/usr/sbin/munin	09:10:20	1
3303429	99	47	39,5	cyclictest	3305929	-21	kworker/u4:10+events_unbound	08:20:00	1
3303428	99	47	40,5	cyclictest	3418851	-21	/usr/sbin/munin	10:45:23	0
3303428	99	47	14,17	cyclictest	0	-21	swapper/0	07:30:19	0
3303429	99	46	40,4	cyclictest	3317898	-21	fschecks_count	08:05:19	1
3303429	99	46	37,7	cyclictest	3406336	-21	unixbench_multi	10:30:39	1
3303429	99	46	37,7	cyclictest	3329051	-21	systemd	08:49:32	1
3303428	99	46	39,5	cyclictest	3470892	-21	aten_r7power_vo	11:45:16	0
3303428	99	46	36,8	cyclictest	3409504	-21	aten2__	10:35:13	0
3303429	99	45	39,4	cyclictest	3336836	-21	kworker/u4:1+events_unbound	09:26:00	1
3303429	99	45	36,6	cyclictest	3331649	-21	sendmail	08:59:59	1
3303429	99	45	31,9	cyclictest	0	-21	swapper/1	08:40:29	1
3303429	99	45	28,5	cyclictest	3455578	-21	kworker/u4:4+events_unbound	11:50:08	1
3303428	99	45	9,17	cyclictest	15	1	ktimers/0	10:05:02	0
3303428	99	45	37,5	cyclictest	3344633	-21	unixbench-2d	09:20:39	0
3303428	99	45	37,5	cyclictest	3344633	-21	unixbench-2d	09:20:38	0
3303428	99	45	36,6	cyclictest	3411717	-21	kworker/u4:5-rpciod	10:50:15	0
3303428	99	45	32,7	cyclictest	0	-21	swapper/0	11:44:56	0
3303428	99	45	15,5	cyclictest	15	1	ktimers/0	12:35:25	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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