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 Sep 01, 2026 00:44:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2833522	99	105	96,7	cyclictest	3031121	-21	kworker/u4:11+events_unbound	00:17:45	1
2833522	99	102	85,5	cyclictest	3005115	-21	kworker/u4:10+events_unbound	23:47:39	1
2833522	99	94	77,6	cyclictest	2978656	-21	kworker/u4:8+events_unbound	23:32:37	1
2833521	99	91	84,5	cyclictest	2978655	-21	kworker/u4:6+events_unbound	23:17:37	0
2833522	99	90	84,4	cyclictest	3018731	-21	kworker/u4:3+events_unbound	00:02:42	1
2833522	99	89	82,5	cyclictest	2974114	-21	kworker/u4:1+events_unbound	23:12:35	1
2833522	99	88	80,6	cyclictest	2921051	-21	kworker/u4:0+events_unbound	22:17:28	1
2833521	99	83	76,5	cyclictest	2871742	-21	kworker/u4:9+events_unbound	21:52:19	0
2833521	99	81	74,5	cyclictest	2996731	-21	kworker/u4:4+events_unbound	23:37:39	0
2833522	99	79	71,6	cyclictest	2875618	-21	kworker/u4:11+events_unbound	21:22:18	1
2833521	99	75	67,6	cyclictest	2996732	-21	kworker/u4:6+events_unbound	00:07:43	0
2833522	99	70	62,6	cyclictest	2864386	-21	kworker/u4:4+events_unbound	21:37:19	1
2833521	99	70	62,6	cyclictest	2916526	-21	kworker/u4:5+events_unbound	22:22:28	0
2833521	99	68	32,28	cyclictest	2850189	-21	apt-get	20:15:12	0
2833522	99	66	59,5	cyclictest	3039495	-21	kworker/u4:2+events_unbound	00:32:48	1
2833521	99	65	58,5	cyclictest	2844969	-21	kworker/u4:12+events_unbound	21:12:17	0
2833521	99	61	53,5	cyclictest	2965080	-21	kworker/u4:7+events_unbound	23:02:34	0
2833521	99	61	51,7	cyclictest	2974116	-21	kworker/u4:5+events_unbound	23:50:01	0
2833522	99	60	53,4	cyclictest	2898299	-21	kworker/u4:1+events_unbound	21:50:02	1
2833521	99	60	52,6	cyclictest	2921051	-21	kworker/u4:0+events_unbound	22:32:30	0
2833521	99	59	51,6	cyclictest	3018731	-21	kworker/u4:3+events_unbound	00:37:49	0
2833521	99	59	47,8	cyclictest	37	-21	kcompactd0	22:05:17	0
2833522	99	58	50,6	cyclictest	2870187	-21	/usr/sbin/munin	21:15:41	1
2833522	99	58	47,9	cyclictest	53	-21	kswapd0	22:25:01	1
2833522	99	56	45,8	cyclictest	37	-21	kcompactd0	23:03:31	1
2833522	99	55	37,5	cyclictest	3026608	-21	kworker/u4:8+events_unbound	00:22:47	1
2833522	99	54	47,5	cyclictest	2859283	-21	kworker/u4:6+events_unbound	21:25:02	1
2833522	99	54	46,6	cyclictest	2843698	-21	kworker/u4:8+events_unbound	20:12:11	1
2833522	99	53	46,5	cyclictest	2943265	-21	sshd	22:37:30	1
2833522	99	53	46,5	cyclictest	2836028	-21	kworker/u4:13+events_unbound	20:32:13	1
2833522	99	53	45,5	cyclictest	2907392	-21	kworker/u4:3+events_unbound	21:57:20	1
2833522	99	53	43,8	cyclictest	53	-21	kswapd0	23:10:02	1
2833521	99	53	46,6	cyclictest	2943086	-21	kworker/u4:10+events_unbound	22:37:31	0
2833521	99	53	41,6	cyclictest	2837324	-21	kworker/u4:15+events_unbound	21:31:46	0
2833522	99	52	45,5	cyclictest	2958527	-21	acpi	22:55:11	1
2833522	99	52	45,5	cyclictest	2958527	-21	acpi	22:55:10	1
2833522	99	52	45,5	cyclictest	2931925	-21	aten_r7power_en	22:25:15	1
2833522	99	52	43,6	cyclictest	0	-21	swapper/1	22:30:15	1
2833522	99	52	41,7	cyclictest	2914087	-21	aten_r7power_en	22:05:17	1
2833521	99	52	44,5	cyclictest	531	-21	in:imuxsock	21:22:17	0
2833521	99	52	33,16	cyclictest	0	-21	swapper/0	00:15:33	0
2833522	99	51	43,6	cyclictest	2861786	-21	unixbench_singl	20:55:39	1
2833522	99	51	43,5	cyclictest	0	-21	swapper/1	21:10:30	1
2833522	99	51	42,7	cyclictest	378	-21	dbus-daemon	23:37:39	1
2833522	99	51	41,5	cyclictest	0	-21	swapper/1	23:15:43	1
2833522	99	51	39,9	cyclictest	2841406	-21	aten_r7power_cu	19:40:16	1
2833521	99	51	45,4	cyclictest	2950646	-21	sendmail_mailqu	22:45:38	0
2833521	99	51	43,6	cyclictest	2905803	-21	/usr/sbin/munin	21:55:33	0
2833521	99	51	42,6	cyclictest	2893768	-21	kworker/u4:13+events_unbound	21:42:19	0
2833521	99	51	26,18	cyclictest	17	1	rcu_preempt	19:55:00	0
2833521	99	50	41,7	cyclictest	3026932	-21	sshd	00:12:42	0
2833521	99	50	41,5	cyclictest	2909532	-21	ssh	22:00:13	0
2833521	99	50	40,8	cyclictest	2838695	-21	latency_hist	19:30:01	0
2833521	99	50	37,8	cyclictest	0	-21	swapper/0	22:55:02	0
2833521	99	50	37,8	cyclictest	0	-21	swapper/0	22:55:01	0
2833521	99	50	30,18	cyclictest	2958706	-21	aten_r7power_vo	22:55:17	0
2833521	99	50	30,18	cyclictest	2958706	-21	aten_r7power_vo	22:55:16	0
2833522	99	49	42,5	cyclictest	3009663	-21	kworker/u4:15+events_unbound	23:52:41	1
2833522	99	49	42,5	cyclictest	2836028	-21	kworker/u4:13+events_unbound	20:30:01	1
2833522	99	49	41,6	cyclictest	3012024	-21	apt-get	23:55:15	1
2833522	99	49	41,5	cyclictest	2847706	-21	apt-key	20:05:02	1
2833522	99	49	41,5	cyclictest	2847706	-21	apt-key	20:05:01	1
2833522	99	49	37,9	cyclictest	2864481	-21	latency_hist	21:10:01	1
2833521	99	49	44,3	cyclictest	0	-21	swapper/0	00:00:26	0
2833521	99	49	38,8	cyclictest	0	-21	swapper/0	00:20:21	0
2833521	99	49	31,15	cyclictest	0	-21	swapper/0	21:00:00	0
2833522	99	48	41,5	cyclictest	3038478	-21	ntpq	00:25:35	1
2833522	99	48	41,5	cyclictest	2985182	-21	latency_hist	23:25:02	1
2833522	99	48	41,5	cyclictest	2835181	-21	fschecks_count	19:15:19	1
2833522	99	48	37,9	cyclictest	2919139	-21	ntp_kernel_pll_	22:10:27	1
2833521	99	48	41,5	cyclictest	2919011	-21	/usr/sbin/munin	22:10:24	0
2833521	99	48	39,7	cyclictest	3011749	-21	basename	23:55:00	0
2833521	99	48	38,8	cyclictest	2853310	-21	cut	20:25:21	0
2833521	99	48	38,7	cyclictest	2840433	-21	gltestperf	19:35:20	0
2833521	99	48	37,8	cyclictest	37	-21	kcompactd0	22:25:13	0
2833522	99	47	39,5	cyclictest	2860605	-21	grep	20:55:01	1
2833522	99	47	38,7	cyclictest	3046675	-21	aten_r7power_vo	00:35:18	1
2833522	99	47	37,7	cyclictest	2949350	-21	modprobe	22:45:00	1
2833522	99	47	35,8	cyclictest	37	-21	kcompactd0	22:46:28	1
2833521	99	47	40,5	cyclictest	2873412	-21	cron	21:20:00	0
2833521	99	47	39,6	cyclictest	2841838	-21	kernelversion	19:40:22	0
2833521	99	47	39,5	cyclictest	2849399	-21	fschecks_time	20:10:21	0
2833521	99	47	37,8	cyclictest	2896864	-21	ntp_offset	21:45:30	0
2833521	99	47	36,9	cyclictest	3044676	-21	ssh	00:32:41	0
2833522	99	46	39,5	cyclictest	2954091	-21	apt-get	22:50:11	1
2833522	99	46	39,5	cyclictest	2954091	-21	apt-get	22:50:11	1
2833522	99	46	36,8	cyclictest	2999677	-21	sendmail_mailst	23:40:37	1
2833521	99	46	39,5	cyclictest	2968384	-21	gcc	23:05:35	0
2833521	99	46	38,5	cyclictest	2923317	-21	gltestperf	22:15:20	0
2833521	99	46	37,6	cyclictest	2848816	-21	unixbench_multi	20:05:41	0
2833521	99	46	37,5	cyclictest	0	-21	swapper/0	21:05:00	0
2833522	99	45	39,4	cyclictest	2986224	-21	ldconfig	23:25:35	1
2833522	99	45	38,5	cyclictest	2892447	-21	sh	21:40:32	1
2833522	99	45	38,5	cyclictest	2882657	-21	acpi	21:30:13	1
2833522	99	45	37,6	cyclictest	2844967	-21	kworker/u4:9+events_unbound	20:05:03	1
2833522	99	45	36,7	cyclictest	2837679	-21	cpu	19:25:18	1
2833522	99	45	36,7	cyclictest	2818558	-21	kworker/u4:2+events_unbound	20:40:00	1
2833522	99	45	35,8	cyclictest	2851272	-21	switchtime	20:15:43	1
2833521	99	45	38,5	cyclictest	2878511	-21	/usr/sbin/munin	21:25:20	0
2833521	99	45	37,6	cyclictest	2985735	-21	fschecks_time	23:25:19	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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