OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 Mon Feb 23, 2026 12:44:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3350919	99	76	67,6	cyclictest	3372423	-21	kworker/u4:3+events_unbound	08:40:38	1
3350919	99	71	61,8	cyclictest	3368634	-21	kworker/u4:4+events_unbound	08:50:39	1
3350918	99	69	59,7	cyclictest	3347179	-21	kworker/u4:2+events_unbound	07:44:59	0
3350919	99	67	59,6	cyclictest	3548310	-21	kworker/u4:19+events_unbound	12:36:39	1
3350919	99	66	59,5	cyclictest	3372429	-21	kworker/u4:9+events_unbound	09:20:01	1
3350918	99	62	54,6	cyclictest	3372422	-21	kworker/u4:2+events_unbound	08:35:02	0
3350919	99	60	52,6	cyclictest	3371170	-21	kworker/u4:0+events_unbound	08:35:38	1
3350919	99	60	51,6	cyclictest	3362236	-21	kworker/u4:10+events_unbound	08:10:30	1
3350919	99	60	31,10	cyclictest	3413290	-21	ldconfig	09:45:31	1
3350919	99	59	36,17	cyclictest	3481810	-21	ssh	11:05:16	1
3350919	99	58	49,6	cyclictest	3362235	-21	kworker/u4:6+events_unbound	07:55:16	1
3350919	99	58	41,11	cyclictest	3435273	-21	ssh	10:10:32	1
3350918	99	58	49,6	cyclictest	3530894	-21	kworker/u4:10+events_unbound	12:16:37	0
3350918	99	58	40,14	cyclictest	3417236	-21	fschecks_count	09:50:18	0
3350918	99	58	25,13	cyclictest	3407833	-21	munin-run	09:40:00	0
3350918	99	58	15,33	cyclictest	0	-21	swapper/0	09:45:01	0
3350919	99	57	49,5	cyclictest	3452354	-21	diskmemload	10:30:22	1
3350919	99	57	36,14	cyclictest	3495466	-21	ssh	11:20:32	1
3350918	99	57	38,17	cyclictest	3554557	-21	latency_hist	12:29:59	0
3350919	99	56	48,6	cyclictest	3459108	-21	sshd	10:38:29	1
3350919	99	56	34,15	cyclictest	3425689	-21	ssh	10:00:12	1
3350918	99	56	46,7	cyclictest	3513964	-21	kworker/u4:15+events_unbound	11:56:31	0
3350918	99	56	44,8	cyclictest	3473435	-21	df	10:55:19	0
3350918	99	56	40,13	cyclictest	54	-21	kswapd0	10:15:10	0
3350919	99	55	35,13	cyclictest	3516799	-21	rm	11:45:24	1
3350919	99	54	47,5	cyclictest	3469346	-21	gltestperf	10:50:21	1
3350919	99	54	44,8	cyclictest	0	-21	swapper/1	11:10:46	1
3350919	99	54	44,6	cyclictest	3520554	-21	aten_r7power_cu	11:50:17	1
3350919	99	54	34,15	cyclictest	3375812	-21	ntpq	08:45:25	1
3350919	99	54	34,13	cyclictest	3554848	-21	apt-get	12:30:12	1
3350919	99	54	34,13	cyclictest	3529664	-21	/usr/sbin/munin	12:00:21	1
3350919	99	54	33,17	cyclictest	3473889	-21	ssh	10:55:28	1
3350919	99	54	31,14	cyclictest	3541964	-21	ssh	12:15:13	1
3350918	99	54	49,3	cyclictest	3454116	-21	kworker/u4:0+events_unbound	10:46:11	0
3350919	99	53	46,5	cyclictest	3546675	-21	gltestperf	12:20:22	1
3350919	99	53	46,5	cyclictest	3372530	-21	sed	08:35:01	1
3350919	99	53	37,12	cyclictest	3490312	-21	apt-get	11:15:13	1
3350919	99	53	35,13	cyclictest	3498934	-21	apt-get	11:25:12	1
3350918	99	53	43,6	cyclictest	0	-21	swapper/0	10:50:12	0
3350919	99	52	45,5	cyclictest	3443812	-21	ssh	10:20:27	1
3350919	99	52	45,5	cyclictest	3403438	-21	latency_hist	09:35:00	1
3350919	99	52	44,5	cyclictest	3525373	-21	sed	11:55:24	1
3350919	99	52	35,11	cyclictest	3465323	-21	ntpq	10:45:25	1
3350919	99	52	34,14	cyclictest	3407870	-21	ssh	09:40:00	1
3350918	99	52	43,6	cyclictest	3391242	-21	/usr/sbin/munin	09:20:25	0
3350918	99	52	29,18	cyclictest	3490326	-21	rm	11:15:14	0
3350919	99	51	44,5	cyclictest	3460819	-21	/usr/sbin/munin	10:40:21	1
3350919	99	51	35,11	cyclictest	3395615	-21	ntpq	09:25:24	1
3350919	99	51	33,14	cyclictest	3412232	-21	ssh	09:45:00	1
3350919	99	51	32,14	cyclictest	3430055	-21	apt-get	10:05:13	1
3350919	99	51	20,11	cyclictest	0	-21	swapper/1	11:00:36	1
3350918	99	51	44,5	cyclictest	3412657	-21	basename	09:45:16	0
3350918	99	51	43,6	cyclictest	3372427	-21	kworker/u4:6+events_unbound	09:15:43	0
3350918	99	51	42,7	cyclictest	3559484	-21	fschecks_count	12:35:19	0
3350918	99	51	42,7	cyclictest	3430348	-21	/usr/sbin/munin	10:05:18	0
3350919	99	50	43,5	cyclictest	3504530	-21	unixbench_singl	11:30:40	1
3350919	99	50	43,5	cyclictest	3504530	-21	unixbench_singl	11:30:40	1
3350919	99	50	41,6	cyclictest	3353910	-21	fschecks_count	07:20:20	1
3350919	99	50	30,15	cyclictest	3390627	-21	ssh	09:20:15	1
3350919	99	50	28,14	cyclictest	3534258	-21	ssh	12:05:36	1
3350918	99	50	42,6	cyclictest	3371602	-21	fschecks_count	08:30:18	0
3350918	99	50	42,5	cyclictest	3357577	-21	df_abs	07:35:16	0
3350918	99	50	41,7	cyclictest	54	-21	kswapd0	11:35:16	0
3350918	99	50	41,6	cyclictest	3402149	-21	ssh	09:32:58	0
3350918	99	50	41,6	cyclictest	3351148	-21	aten_r7power_en	07:10:15	0
3350918	99	50	40,8	cyclictest	3376614	-21	aten_r7power_vo	08:50:18	0
3350918	99	50	38,9	cyclictest	3378681	-21	unixbench-2d	08:55:37	0
3350918	99	50	38,7	cyclictest	3522747	-21	kworker/u4:6-xprtiod	12:24:25	0
3350919	99	49	42,5	cyclictest	3380612	-21	fschecks_count	09:05:25	1
3350919	99	49	30,13	cyclictest	3551396	-21	ssh	12:25:32	1
3350918	99	49	42,5	cyclictest	3503491	-21	df_abs	11:30:19	0
3350918	99	49	42,5	cyclictest	3503491	-21	df_abs	11:30:19	0
3350918	99	49	41,5	cyclictest	3460785	-21	fschecks_time	10:40:20	0
3350918	99	49	37,8	cyclictest	3425739	-21	ssh	10:00:16	0
3350918	99	49	37,10	cyclictest	0	-21	swapper/0	11:25:14	0
3350918	99	49	36,10	cyclictest	0	-21	swapper/0	11:00:32	0
3350918	99	49	33,11	cyclictest	3435267	-21	ntp_states	10:10:32	0
3350918	99	49	31,16	cyclictest	0	-21	swapper/0	12:30:37	0
3350918	99	49	27,14	cyclictest	3516795	-21	ntpq	11:45:25	0
3350919	99	48	41,5	cyclictest	3369698	-21	timerandwakeup	08:20:40	1
3350919	99	48	33,11	cyclictest	3438855	-21	sh	10:15:16	1
3350919	99	48	33,10	cyclictest	3538504	-21	ssh	12:10:33	1
3350919	99	48	33,10	cyclictest	3355951	-21	modprobe	07:30:00	1
3350919	99	48	32,12	cyclictest	3382631	-21	ssh	09:10:35	1
3350919	99	48	32,11	cyclictest	3422050	-21	ssh	09:55:30	1
3350918	99	48	41,5	cyclictest	3495703	-21	switchtime	11:20:39	0
3350918	99	48	41,5	cyclictest	3447881	-21	cut	10:25:20	0
3350918	99	48	25,15	cyclictest	3529662	-21	ssh	12:00:22	0
3350919	99	47	35,9	cyclictest	54	-21	kswapd0	11:35:14	1
3350919	99	47	32,9	cyclictest	3368148	-21	awk	08:15:38	1
3350919	99	47	32,11	cyclictest	3357999	-21	ntpq	07:35:30	1
3350919	99	47	30,11	cyclictest	3378356	-21	awk	08:55:30	1
3350919	99	47	28,15	cyclictest	3352891	-21	ntpq	07:15:26	1
3350919	99	47	13,11	cyclictest	0	-21	swapper/1	10:25:19	1
3350918	99	47	40,5	cyclictest	3452732	-21	grep	10:30:36	0
3350918	99	47	40,5	cyclictest	3366303	-21	aten_r7power_po	08:10:16	0
3350918	99	47	39,6	cyclictest	3355961	-21	apt	07:30:01	0
3350918	99	47	38,6	cyclictest	3538859	-21	grep	12:10:39	0
3350918	99	47	38,6	cyclictest	3445372	-21	kworker/u4:5-rpciod	10:35:39	0
3350918	99	47	38,6	cyclictest	0	-21	swapper/0	09:05:42	0
3350918	99	47	36,9	cyclictest	3421660	-21	fschecks_time	09:55:21	0
3350918	99	47	36,8	cyclictest	3520800	-21	cut	11:50:19	0
3350919	99	46	38,6	cyclictest	3417386	-21	gltestperf	09:50:19	1
3350919	99	46	34,8	cyclictest	3365583	-21	ntpq	08:05:34	1
3350919	99	46	29,8	cyclictest	1	-21	systemd	08:00:12	1
3350919	99	46	27,14	cyclictest	3361545	-21	gltestperf	07:50:21	1
3350918	99	46	40,4	cyclictest	3482204	-21	fschecks_time	11:05:21	0
3350918	99	46	38,6	cyclictest	3353918	-21	fschecks_time	07:20:19	0
3350918	99	46	35,9	cyclictest	3382200	-21	fschecks_time	09:10:21	0
3350918	99	46	35,8	cyclictest	3375452	-21	grep	08:45:16	0
3350918	99	46	34,9	cyclictest	3364791	-21	sh	08:05:01	0
3350919	99	45	39,4	cyclictest	0	-21	swapper/1	07:45:20	1
3350919	99	45	37,5	cyclictest	0	-21	swapper/1	11:40:26	1
3350918	99	45	38,5	cyclictest	3356895	-21	cat	07:30:35	0
3350918	99	45	36,6	cyclictest	3360608	-21	proc_pri	07:45:34	0
3350919	99	44	37,5	cyclictest	3359753	-21	munin-run	07:44:59	1
3350919	99	44	26,14	cyclictest	3380235	-21	cat	09:05:01	1
3350918	99	44	38,3	cyclictest	0	-21	swapper/0	11:10:29	0
3350918	99	44	36,6	cyclictest	3362532	-21	aten_r7power_po	07:55:16	0
3350918	99	44	35,6	cyclictest	0	-21	swapper/0	09:00:35	0
3350918	99	44	33,8	cyclictest	3444110	-21	uname	10:20:38	0
3350918	99	44	30,11	cyclictest	3511819	-21	apt-get	11:40:14	0
3350919	99	43	26,13	cyclictest	3370498	-21	gltestperf	08:25:21	1
3350919	99	43	26,13	cyclictest	3356821	-21	ps	07:30:34	1
3350919	99	43	23,15	cyclictest	3351016	-21	latency_hist	07:10:02	1
3350918	99	43	37,4	cyclictest	3533745	-21	fschecks_count	12:05:20	0
3350918	99	43	36,5	cyclictest	3369649	-21	switchtime	08:20:41	0
3350918	99	43	33,7	cyclictest	3370132	-21	aten2__	08:25:15	0
3350918	99	43	27,13	cyclictest	3361175	-21	apt-get	07:50:12	0
3350918	99	42	34,5	cyclictest	3372428	-21	kworker/u4:7-rpciod	08:45:01	0
3350918	99	42	32,8	cyclictest	3352346	-21	aten2__	07:15:17	0
3350918	99	42	31,9	cyclictest	3364969	-21	aten2__	08:05:17	0
3350918	99	42	23,12	cyclictest	3368147	-21	ntpq	08:15:38	0
3350918	99	42	23,11	cyclictest	3396229	-21	head	09:25:39	0
3350919	99	41	28,9	cyclictest	3351687	-21	ntpq	07:10:29	1
3350918	99	39	12,9	cyclictest	3350933	-21	latency_hist	07:10:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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