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 Mon Jan 12, 2026 00:44:11)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3266940	99	93	83,7	cyclictest	3457418	-21	kworker/u4:6+events_unbound	00:38:50	1
3266938	99	89	80,7	cyclictest	3338437	-21	kworker/u4:4+events_unbound	22:06:52	0
3266938	99	88	81,5	cyclictest	3419273	-21	kworker/u4:6+events_unbound	23:42:12	0
3266938	99	82	74,6	cyclictest	3351465	-21	kworker/u4:9+events_unbound	22:16:53	0
3266938	99	77	69,6	cyclictest	3329746	-21	kworker/u4:6+events_unbound	21:46:46	0
3266940	99	72	53,11	cyclictest	3387149	-21	modprobe	22:55:00	1
3266938	99	70	64,4	cyclictest	3410706	-21	kworker/u4:8+events_unbound	23:30:00	0
3266938	99	69	62,5	cyclictest	3279616	-21	kworker/u4:16+events_unbound	20:05:01	0
3266940	99	68	51,10	cyclictest	3412652	-21	modprobe	23:25:01	1
3266940	99	67	60,5	cyclictest	3334100	-21	kworker/u4:2+events_unbound	21:56:48	1
3266940	99	67	52,12	cyclictest	0	-21	swapper/1	21:40:15	1
3266938	99	66	45,12	cyclictest	0	-21	swapper/0	22:55:00	0
3266940	99	65	57,6	cyclictest	3275838	-21	kworker/u4:7+events_unbound	20:40:00	1
3266940	99	64	57,5	cyclictest	3277098	-21	kworker/u4:5+events_unbound	20:35:00	1
3266940	99	64	56,6	cyclictest	3279618	-21	kworker/u4:18+events_unbound	21:35:01	1
3266940	99	63	56,5	cyclictest	3279612	-21	kworker/u4:12+events_unbound	20:15:00	1
3266940	99	63	54,6	cyclictest	3275835	-21	kworker/u4:3+events_unbound	20:21:32	1
3266938	99	63	56,5	cyclictest	3427279	-21	kworker/u4:5+events_unbound	23:53:02	0
3266938	99	63	56,5	cyclictest	3427279	-21	kworker/u4:5+events_unbound	23:53:02	0
3266938	99	63	55,6	cyclictest	3359530	-21	kworker/u4:2+events_unbound	22:36:58	0
3266938	99	63	45,9	cyclictest	3412654	-21	kworker/u4:1	23:25:00	0
3266938	99	62	53,7	cyclictest	3419273	-21	kworker/u4:6+events_unbound	23:32:10	0
3266940	99	61	52,6	cyclictest	3277098	-21	kworker/u4:5+events_unbound	19:56:32	1
3266938	99	61	53,6	cyclictest	3360115	-21	kworker/u4:8+events_unbound	22:41:57	0
3266938	99	60	52,6	cyclictest	3466010	-21	kworker/u4:0+events_unbound	00:28:32	0
3266938	99	60	44,6	cyclictest	3304288	-21	kworker/u4:8+events_unbound	21:34:59	0
3266940	99	59	52,5	cyclictest	3419274	-21	kworker/u4:7+events_unbound	00:13:30	1
3266940	99	59	50,7	cyclictest	3287215	-21	kworker/u4:24+events_unbound	20:56:36	1
3266940	99	59	50,7	cyclictest	314	-21	systemd-journal	22:46:58	1
3266940	99	59	45,9	cyclictest	3463456	-21	modprobe	00:25:01	1
3266940	99	59	44,12	cyclictest	3362793	-21	sh	22:25:34	1
3266938	99	59	51,6	cyclictest	3432221	-21	kworker/u4:0+events_unbound	23:48:03	0
3266938	99	59	51,6	cyclictest	3279618	-21	kworker/u4:18+events_unbound	21:26:42	0
3266938	99	59	51,6	cyclictest	3279613	-21	kworker/u4:13+events_unbound	21:06:40	0
3266938	99	58	50,6	cyclictest	3389728	-21	kworker/u4:2+events_unbound	23:04:23	0
3266938	99	58	47,8	cyclictest	3266937	-21	cyclictest	22:31:09	0
3266940	99	57	49,6	cyclictest	3440151	-21	kworker/u4:1+events_unbound	00:06:40	1
3266940	99	57	48,6	cyclictest	54	-21	kswapd0	22:05:01	1
3266938	99	57	48,7	cyclictest	3457416	-21	kworker/u4:4+events_unbound	00:23:33	0
3266940	99	56	48,6	cyclictest	3279613	-21	kworker/u4:13+events_unbound	20:41:36	1
3266940	99	56	46,8	cyclictest	3287207	-21	systemd	20:26:32	1
3266938	99	56	43,11	cyclictest	0	-21	swapper/0	00:00:14	0
3266940	99	55	45,8	cyclictest	3270776	-21	systemd	19:21:28	1
3266938	99	55	35,17	cyclictest	3421704	-21	fschecks_count	23:35:20	0
3266940	99	54	46,6	cyclictest	3296057	-21	kworker/u4:2+events_unbound	21:16:40	1
3266940	99	53	47,4	cyclictest	3427279	-21	kworker/u4:5+events_unbound	23:53:00	1
3266940	99	53	47,4	cyclictest	3427279	-21	kworker/u4:5+events_unbound	23:53:00	1
3266940	99	53	46,5	cyclictest	3314651	-21	latency_hist	21:30:01	1
3266940	99	53	45,6	cyclictest	3418374	-21	unixbench-2d	23:30:42	1
3266940	99	53	44,7	cyclictest	3347146	-21	kworker/u4:3+events_unbound	22:17:59	1
3266940	99	52	45,5	cyclictest	3307740	-21	unixbench_singl	21:20:43	1
3266940	99	52	45,5	cyclictest	3307740	-21	unixbench_singl	21:20:42	1
3266940	99	52	44,6	cyclictest	3468051	-21	aten_r7power_cu	00:30:17	1
3266938	99	52	44,5	cyclictest	3332977	-21	/usr/sbin/munin	21:50:34	0
3266938	99	52	43,6	cyclictest	3351465	-21	kworker/u4:9+events_unbound	22:15:01	0
3266938	99	52	33,16	cyclictest	0	-21	swapper/0	21:15:15	0
3266940	99	51	43,6	cyclictest	3284658	-21	systemd	20:16:31	1
3266940	99	51	43,5	cyclictest	0	-21	swapper/1	23:05:12	1
3266940	99	51	42,7	cyclictest	3376814	-21	kworker/u4:5+events_unbound	23:10:33	1
3266938	99	51	43,5	cyclictest	3323299	-21	latency_hist	21:40:02	0
3266938	99	51	31,18	cyclictest	0	-21	swapper/0	00:10:01	0
3266940	99	50	43,5	cyclictest	3442989	-21	gltestperf	00:00:23	1
3266940	99	50	41,7	cyclictest	3426635	-21	mailstats	23:40:38	1
3266940	99	50	41,7	cyclictest	3385432	-21	kworker/u4:1+events_unbound	23:25:04	1
3266938	99	50	39,9	cyclictest	3298115	-21	diskmemload	21:10:19	0
3266938	99	50	29,7	cyclictest	3324783	-21	unixbench_singl	21:40:41	0
3266940	99	49	41,6	cyclictest	3419274	-21	kworker/u4:7+events_unbound	23:37:11	1
3266940	99	49	41,6	cyclictest	3296058	-21	kworker/u4:3-rpciod	21:15:00	1
3266940	99	49	36,10	cyclictest	3433792	-21	idleruntime-cro	23:50:00	1
3266938	99	49	43,4	cyclictest	0	-21	swapper/0	00:30:24	0
3266938	99	49	43,3	cyclictest	0	-21	swapper/0	00:35:17	0
3266938	99	49	42,4	cyclictest	0	-21	swapper/0	22:45:28	0
3266938	99	49	40,7	cyclictest	3396397	-21	gltestperf	23:05:21	0
3266940	99	48	41,5	cyclictest	3348914	-21	sed	22:10:01	1
3266940	99	48	40,6	cyclictest	3438279	-21	/usr/sbin/munin	23:55:11	1
3266940	99	48	40,6	cyclictest	3438279	-21	/usr/sbin/munin	23:55:11	1
3266940	99	48	37,9	cyclictest	3268748	-21	fschecks_time	19:15:36	1
3266940	99	48	37,8	cyclictest	37	-21	kcompactd0	21:45:34	1
3266940	99	48	36,9	cyclictest	3350481	-21	unixbench_singl	22:10:44	1
3266940	99	48	35,10	cyclictest	3375908	-21	sed	22:40:38	1
3266938	99	48	41,5	cyclictest	3405691	-21	grep	23:15:41	0
3266938	99	48	41,5	cyclictest	3389728	-21	kworker/u4:2+events_unbound	23:12:06	0
3266938	99	48	41,5	cyclictest	3297349	-21	diskmemload	00:15:01	0
3266938	99	48	37,8	cyclictest	3282613	-21	fschecks_count	20:10:20	0
3266938	99	48	35,4	cyclictest	3456471	-21	grep	00:15:38	0
3266940	99	47	40,5	cyclictest	3371756	-21	diskmemload	22:35:41	1
3266940	99	47	39,6	cyclictest	54	-21	kswapd0	23:00:18	1
3266940	99	47	38,7	cyclictest	0	-21	swapper/1	00:25:36	1
3266940	99	47	38,6	cyclictest	54	-21	kswapd0	21:50:08	1
3266940	99	47	37,8	cyclictest	3366563	-21	fschecks_count	22:30:21	1
3266938	99	47	38,7	cyclictest	3439549	-21	/usr/sbin/munin	23:55:39	0
3266938	99	47	38,7	cyclictest	3439549	-21	/usr/sbin/munin	23:55:39	0
3266938	99	47	38,7	cyclictest	3294828	-21	idleruntime-cro	21:00:01	0
3266940	99	46	39,5	cyclictest	3361747	-21	latency_hist	22:25:02	1
3266940	99	46	39,5	cyclictest	3320523	-21	/usr/sbin/munin	21:35:39	1
3266940	99	46	39,5	cyclictest	3274592	-21	latency_hist	19:40:00	1
3266938	99	46	40,4	cyclictest	0	-21	swapper/0	22:00:13	0
3266938	99	46	36,8	cyclictest	3283720	-21	aten_r7power_vo	20:15:14	0
3266938	99	46	36,8	cyclictest	3269796	-21	aten_r7power_en	19:20:17	0
3266938	99	46	35,9	cyclictest	3291219	-21	aten2__	20:45:14	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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