OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #b, 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, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackbslot2.osadl.org (updated Mon Jun 30, 2025 12:44:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2767834	2	232	202,20	sleep1	0	-21	swapper/1	07:09:55	1
2767605	2	228	198,20	sleep0	0	-21	swapper/0	07:07:06	0
2767830	2	227	198,19	sleep2	0	-21	swapper/2	07:09:52	2
2767831	2	225	196,19	sleep3	0	-21	swapper/3	07:09:53	3
2836684	2	146	0,1	sleep1	2836683	-21	ntpq	08:25:24	1
2872240	2	139	0,1	sleep2	2872238	-21	snmp_ryswitch2.	09:10:03	2
2768006	99	94	35,17	cyclictest	3005793	-21	chrome	11:45:02	2
2768003	99	60	54,4	cyclictest	2915385	-21	/usr/share/muni	10:00:02	1
2768009	99	56	56,0	cyclictest	2823272	-21	awk	08:10:15	3
2768009	99	54	49,4	cyclictest	2772437	-21	/usr/share/muni	07:15:11	3
2768006	99	52	46,2	cyclictest	2772218	-21	kworker/u8:1+events_unbound	08:15:09	2
2768006	99	49	46,2	cyclictest	2933162	-21	kworker/u8:3+flush-179:0	10:30:08	2
2768006	99	48	46,2	cyclictest	2850039	-21	kworker/u8:1+flush-179:0	08:50:10	2
2768006	99	48	46,2	cyclictest	2850039	-21	kworker/u8:1+flush-179:0	08:50:10	2
2768006	99	48	45,2	cyclictest	3001110	-21	kworker/u8:2+flush-179:0	12:25:08	2
2768006	99	48	44,3	cyclictest	2958159	-21	kworker/u8:4+events_unbound	11:05:09	2
2768006	99	48	44,3	cyclictest	2785840	-21	/usr/share/muni	07:30:10	2
2768006	99	47	43,3	cyclictest	3005786	-21	CacheThread_Blo	11:45:01	2
2768006	99	46	42,3	cyclictest	2944858	-21	kworker/u8:2+events_unbound	10:35:02	2
2768006	99	46	42,3	cyclictest	2944858	-21	kworker/u8:2+events_unbound	10:35:02	2
2768006	99	46	42,3	cyclictest	2785490	-21	kworker/u8:2+events_unbound	08:20:05	2
2768009	99	45	43,1	cyclictest	0	-21	swapper/3	09:45:01	3
2768009	99	45	40,3	cyclictest	2975600	-21	latency_hist	11:10:00	3
2768009	99	45	40,3	cyclictest	2832967	-21	kworker/u8:3+flush-179:0	08:45:10	3
2768006	99	45	42,2	cyclictest	2958159	-21	kworker/u8:4+events_unbound	12:05:09	2
2768006	99	45	42,2	cyclictest	2958159	-21	kworker/u8:4+events_unbound	12:05:09	2
2768006	99	45	42,2	cyclictest	2807081	-21	kworker/u8:3+flush-179:0	08:05:05	2
2767998	99	45	45,0	cyclictest	2823273	-21	awk	08:10:16	0
2767998	99	44	41,2	cyclictest	2875814	-21	kworker/u8:2+events_unbound	10:11:00	0
2768006	99	43	40,2	cyclictest	2940550	-21	kworker/u8:1+flush-179:0	10:55:04	2
2768006	99	43	40,2	cyclictest	2928009	-21	kworker/u8:0+flush-179:0	10:40:32	2
2768006	99	43	40,2	cyclictest	2824679	-21	kworker/u8:0+events_unbound	08:40:07	2
2768006	99	43	39,3	cyclictest	2887823	-21	kworker/u8:3+events_unbound	09:30:00	2
2768006	99	43	39,3	cyclictest	2789604	-21	kworker/u8:4+events_unbound	07:35:09	2
2768006	99	42	39,2	cyclictest	2785490	-21	kworker/u8:2+flush-179:0	09:05:17	2
2768006	99	42	39,2	cyclictest	2785490	-21	kworker/u8:2+flush-179:0	09:05:17	2
2768006	99	42	36,5	cyclictest	2910812	-21	/usr/share/muni	09:55:11	2
2768003	99	42	40,1	cyclictest	0	-21	swapper/1	09:45:00	1
2767998	99	42	38,3	cyclictest	2944858	-21	kworker/u8:2+flush-179:0	10:45:05	0
2902424	2	41	0,1	chrt	2902410	-21	snmp_wlanpowerc	09:45:03	1
2768006	99	41	39,2	cyclictest	2958159	-21	kworker/u8:4+flush-179:0	12:15:10	2
2768006	99	41	36,4	cyclictest	3044850	-21	/usr/share/muni	12:30:15	2
2768003	99	41	37,3	cyclictest	2953326	-31	munin-html	10:40:32	1
2768003	99	41	36,3	cyclictest	3048872	-21	latency_hist	12:35:00	1
2767998	99	41	38,2	cyclictest	2785490	-21	kworker/u8:2+flush-179:0	07:30:26	0
2768009	99	40	34,4	cyclictest	3040584	-21	/usr/share/muni	12:25:17	3
2768006	99	40	38,1	cyclictest	3009844	-21	kworker/2:0+pm	12:01:05	2
2768006	99	40	37,2	cyclictest	2963207	-21	kworker/2:2+pm	11:21:01	2
2768006	99	40	37,2	cyclictest	2963207	-21	kworker/2:2+pm	11:21:01	2
2768006	99	40	37,2	cyclictest	2772218	-21	kworker/u8:1+events_unbound	07:20:07	2
2767998	99	40	37,2	cyclictest	2896755	-21	kworker/u8:4+flush-179:0	09:40:30	0
2768009	99	39	30,8	cyclictest	2798682	-21	ThreadPoolForeg	07:45:00	3
2768006	99	39	37,1	cyclictest	2963207	-21	kworker/2:2+pm	11:03:33	2
2768006	99	39	37,1	cyclictest	2801057	-21	kworker/2:2+pm	08:26:01	2
2768006	99	39	36,2	cyclictest	2940757	-21	kworker/2:0+pm	10:46:33	2
2768006	99	39	36,2	cyclictest	2875814	-21	kworker/u8:2+flush-179:0	10:15:15	2
2768006	99	39	36,2	cyclictest	2871657	-21	kworker/2:2+pm	09:15:44	2
2768006	99	39	36,2	cyclictest	2854649	-21	kworker/2:1+pm	09:00:18	2
2768006	99	39	36,2	cyclictest	2727832	-21	kworker/2:0+pm	07:45:20	2
2768003	99	39	35,3	cyclictest	2798444	-21	munin-update	07:45:26	1
2767998	99	39	37,1	cyclictest	2678551	-21	kworker/0:2+pm	08:08:00	0
2767998	99	39	36,2	cyclictest	3031076	-21	kworker/u8:1+flush-179:0	12:15:17	0
2768009	99	38	36,1	cyclictest	2859077	-21	kworker/3:0+pm	10:25:21	3
2768009	99	38	36,1	cyclictest	2660657	-1	kworker/3:2H+kblockd	12:32:49	3
2768009	99	38	34,2	cyclictest	2660657	-1	kworker/3:2H+kblockd	12:00:04	3
2768009	99	38	34,2	cyclictest	2660657	-1	kworker/3:2H+kblockd	10:15:00	3
2768006	99	38	36,1	cyclictest	3009844	-21	kworker/2:0+pm	12:10:01	2
2768006	99	38	36,1	cyclictest	2963207	-21	kworker/2:2+pm	11:36:04	2
2768006	99	38	36,1	cyclictest	2923788	-21	kworker/2:1+pm	10:25:26	2
2768006	99	38	36,1	cyclictest	2871657	-21	kworker/2:2+pm	09:31:28	2
2768006	99	38	35,2	cyclictest	3009844	-21	kworker/2:0+pm	11:55:04	2
2768006	99	38	35,2	cyclictest	2896755	-21	kworker/u8:4+flush-179:0	09:40:06	2
2768006	99	38	35,2	cyclictest	2871657	-21	kworker/2:2+pm	09:20:05	2
2768006	99	38	35,2	cyclictest	2871657	-21	kworker/2:2+pm	09:20:05	2
2768006	99	38	32,5	cyclictest	2794478	-21	/usr/share/muni	07:40:04	2
2767998	99	38	34,3	cyclictest	2961238	-21	apt-get	10:50:16	0
2767998	99	38	34,3	cyclictest	2961238	-21	apt-get	10:50:16	0
2767998	99	38	33,3	cyclictest	3026361	-21	munin-limits	12:05:29	0
2767998	99	38	33,3	cyclictest	3026361	-21	munin-limits	12:05:28	0
2768009	99	37	34,2	cyclictest	2660657	-1	kworker/3:2H+kblockd	12:15:00	3
2768009	99	37	31,5	cyclictest	2660657	-1	kworker/3:2H+kblockd	09:54:38	3
2768009	99	37	31,4	cyclictest	3012883	-21	diskstats	11:50:20	3
2768006	99	37	36,1	cyclictest	2801057	-21	kworker/2:2+pm	08:30:42	2
2768006	99	37	36,1	cyclictest	2727832	-21	kworker/2:0+pm	07:25:12	2
2768006	99	37	36,1	cyclictest	2727832	-21	kworker/2:0+pm	07:25:12	2
2768006	99	37	35,2	cyclictest	2958159	-21	kworker/u8:4+flush-179:0	11:30:06	2
2768006	99	37	35,1	cyclictest	3009844	-21	kworker/2:0+pm	11:50:12	2
2768006	99	37	35,1	cyclictest	2963207	-21	kworker/2:2+pm	11:25:40	2
2768006	99	37	35,1	cyclictest	2854649	-21	kworker/2:1+pm	08:56:25	2
2768006	99	37	35,1	cyclictest	2801057	-21	kworker/2:2+pm	08:00:15	2
2768006	99	37	35,1	cyclictest	2801057	-21	kworker/2:2+pm	07:55:19	2
2768006	99	37	34,2	cyclictest	2871657	-21	kworker/2:2+pm	10:00:33	2
2768006	99	37	33,2	cyclictest	2137053	-1	kworker/2:2H+kblockd	10:50:16	2
2768006	99	37	33,2	cyclictest	2137053	-1	kworker/2:2H+kblockd	10:50:16	2
2768006	99	37	32,4	cyclictest	2754744	-21	kworker/u8:4+flush-179:0	07:15:05	2
2768003	99	37	32,4	cyclictest	2941579	-21	ntpq	10:30:05	1
2767998	99	37	35,1	cyclictest	2906308	-21	kworker/0:2+pm	10:03:29	0
2767998	99	37	34,2	cyclictest	2724440	-21	kworker/u8:2+flush-179:0	07:10:16	0
2767998	99	37	34,2	cyclictest	2604965	-1	kworker/0:2H+kblockd	07:41:41	0
2767998	99	37	33,2	cyclictest	2604965	-1	kworker/0:2H+kblockd	12:10:02	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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