OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 Tue Dec 02, 2025 12:44:41)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
348111	2	236	207,19	sleep3	0	-21	swapper/3	07:08:09	3
348110	2	236	208,18	sleep2	0	-21	swapper/2	07:08:08	2
348234	2	228	179,40	sleep1	0	-21	swapper/1	07:09:44	1
347881	2	224	193,20	sleep0	0	-21	swapper/0	07:05:45	0
348714	99	66	1,64	cyclictest	413241	-21	kworker/u8:0+efi_rts_wq	08:54:33	0
348714	99	62	55,5	cyclictest	604122	-21	/usr/share/muni	12:05:01	0
348727	99	56	2,53	cyclictest	413241	-21	kworker/u8:0+efi_rts_wq	08:54:34	3
348717	99	54	50,2	cyclictest	430965	-21	/usr/share/muni	08:45:01	1
348717	99	51	47,3	cyclictest	466299	-21	kworker/u8:3+flush-179:0	10:25:14	1
348714	99	51	43,6	cyclictest	625576	-21	/usr/share/muni	12:30:13	0
348727	99	50	46,3	cyclictest	387724	-21	kworker/u8:1+flush-179:0	08:00:00	3
348727	99	48	44,3	cyclictest	348080	-21	kworker/u8:3+events_unbound	07:10:20	3
348719	99	48	0,14	cyclictest	608463	-21	snmp_wanswitch.	12:10:02	2
348717	99	48	45,2	cyclictest	400687	-21	kworker/u8:2+events_unbound	08:40:15	1
348717	99	48	0,2	cyclictest	612852	-21	snmp_areswitch.	12:15:01	1
348727	99	47	44,2	cyclictest	430739	-21	kworker/u8:3+events_unbound	08:45:15	3
348719	99	46	42,2	cyclictest	586611	-21	snmp_ryswitch.c	11:45:01	2
348727	99	45	42,2	cyclictest	361906	-21	kworker/u8:0+flush-179:0	08:05:15	3
534831	2	44	0,1	chrt	534816	-21	python3	10:45:00	2
348727	99	44	41,2	cyclictest	486748	-21	kworker/u8:0+events_unbound	09:50:13	3
348727	99	44	41,2	cyclictest	466299	-21	kworker/u8:3+events_unbound	10:05:16	3
348727	99	44	41,2	cyclictest	460978	-21	kworker/u8:1+events_unbound	09:30:20	3
348727	99	44	41,2	cyclictest	366441	-21	kworker/u8:2+events_unbound	07:40:12	3
348727	99	44	34,9	cyclictest	486748	-21	kworker/u8:0+events_unbound	09:55:17	3
348717	99	44	41,2	cyclictest	348080	-21	kworker/u8:3+flush-179:0	07:25:13	1
348717	99	44	40,3	cyclictest	595036	-21	kworker/u8:2+events_unbound	12:00:14	1
348717	99	44	40,3	cyclictest	581574	-21	kworker/u8:4+flush-179:0	11:50:29	1
348714	99	44	38,4	cyclictest	504482	-21	latency_hist	10:10:00	0
348727	99	43	39,3	cyclictest	616389	-21	kworker/u8:3+events_unbound	12:35:14	3
348719	99	43	33,9	cyclictest	392774	-21	kworker/2:1+pm	08:30:03	2
348719	99	43	25,17	cyclictest	379290	-21	kworker/u8:3+flush-179:0	08:15:13	2
348717	99	43	40,2	cyclictest	520395	-21	kworker/u8:1+flush-179:0	10:40:11	1
348717	99	43	40,2	cyclictest	387724	-21	kworker/u8:1+flush-179:0	07:55:20	1
348717	99	43	40,2	cyclictest	366441	-21	kworker/u8:2+events_unbound	07:45:00	1
348717	99	43	40,2	cyclictest	361906	-21	kworker/u8:0+events_unbound	08:00:13	1
348727	99	42	36,2	cyclictest	466299	-21	kworker/u8:3+events_unbound	09:40:15	3
348727	99	42	32,10	cyclictest	202152	-1	kworker/3:2H+kblockd	07:53:59	3
348719	99	42	40,1	cyclictest	567667	-21	kworker/2:1+pm	12:30:58	2
348719	99	42	39,2	cyclictest	458712	-21	cat	09:15:12	2
348717	99	42	38,3	cyclictest	561777	-21	kworker/u8:0+events_unbound	12:10:00	1
348714	99	42	37,3	cyclictest	491395	-21	cp	09:55:00	0
348727	99	41	37,3	cyclictest	525465	-21	kworker/u8:0+events_unbound	10:35:15	3
348719	99	41	34,5	cyclictest	573695	-21	/usr/share/muni	11:30:02	2
348717	99	41	38,2	cyclictest	387724	-21	kworker/u8:1+flush-179:0	08:50:16	1
348717	99	41	37,3	cyclictest	520395	-21	kworker/u8:1+flush-179:0	11:45:16	1
520847	2	40	0,1	sleep0	0	-21	swapper/0	10:25:26	0
348727	99	40	36,3	cyclictest	439389	-21	kworker/u8:2+flush-179:0	09:45:17	3
348727	99	40	34,4	cyclictest	426650	-21	/usr/share/muni	08:40:01	3
348719	99	40	37,2	cyclictest	567667	-21	kworker/2:1+pm	12:16:30	2
348719	99	40	37,2	cyclictest	473826	-21	kworker/2:2+pm	11:20:15	2
348719	99	40	37,2	cyclictest	473826	-21	kworker/2:2+pm	09:56:12	2
348717	99	40	37,2	cyclictest	561777	-21	kworker/u8:0+flush-179:0	11:20:09	1
348717	99	40	36,3	cyclictest	561777	-21	kworker/u8:0+events_unbound	12:10:28	1
348714	99	40	34,4	cyclictest	581975	-21	latency_hist	11:40:00	0
348727	99	39	36,2	cyclictest	561777	-21	kworker/u8:0+flush-179:0	12:10:29	3
348727	99	39	36,2	cyclictest	486748	-21	kworker/u8:0+events_unbound	10:10:19	3
348727	99	39	36,2	cyclictest	202152	-1	kworker/3:2H+kblockd	09:00:49	3
348719	99	39	37,1	cyclictest	567667	-21	kworker/2:1+pm	11:52:10	2
348719	99	39	37,1	cyclictest	473826	-21	kworker/2:2+pm	11:16:47	2
348719	99	39	37,1	cyclictest	392774	-21	kworker/2:1+pm	09:01:15	2
348719	99	39	37,1	cyclictest	392774	-21	kworker/2:1+pm	08:25:37	2
348719	99	39	37,1	cyclictest	392774	-21	kworker/2:1+pm	08:06:37	2
348719	99	39	36,2	cyclictest	473826	-21	kworker/2:2+pm	11:00:01	2
348719	99	39	36,2	cyclictest	473826	-21	kworker/2:2+pm	10:11:08	2
348719	99	39	36,2	cyclictest	307956	-21	kworker/2:2+pm	07:35:12	2
348719	99	39	36,2	cyclictest	307956	-21	kworker/2:2+pm	07:20:06	2
348719	99	39	35,2	cyclictest	4048655	-1	kworker/2:2H+kblockd	10:50:05	2
348719	99	39	35,2	cyclictest	392774	-21	kworker/2:1+pm	09:20:12	2
348719	99	39	34,3	cyclictest	4048655	-1	kworker/2:2H+kblockd	08:45:06	2
348719	99	39	33,4	cyclictest	353501	-21	ntpq	07:15:03	2
348719	99	39	13,24	cyclictest	391915	-31	munin-graph	07:56:37	2
348717	99	39	36,2	cyclictest	561777	-21	kworker/u8:0+flush-179:0	11:35:16	1
348717	99	39	36,2	cyclictest	499843	-21	kworker/u8:2+flush-179:0	10:30:21	1
348717	99	39	36,2	cyclictest	465514	-21	kworker/u8:0+flush-179:0	09:35:05	1
348717	99	39	31,6	cyclictest	353232	-21	/usr/share/muni	07:15:03	1
348714	99	39	33,4	cyclictest	404065	-21	ntpq	08:10:21	0
348727	99	38	37,0	cyclictest	1318	-21	snmpd	11:14:59	3
348719	99	38	37,1	cyclictest	567667	-21	kworker/2:1+pm	12:07:05	2
348719	99	38	36,1	cyclictest	473826	-21	kworker/2:2+pm	10:32:07	2
348719	99	38	36,1	cyclictest	392774	-21	kworker/2:1+pm	08:11:26	2
348719	99	38	36,1	cyclictest	307956	-21	kworker/2:2+pm	08:02:10	2
348719	99	38	35,2	cyclictest	567667	-21	kworker/2:1+pm	12:02:05	2
348719	99	38	35,2	cyclictest	473826	-21	kworker/2:2+pm	10:45:06	2
348719	99	38	35,2	cyclictest	473826	-21	kworker/2:2+pm	10:20:13	2
348719	99	38	35,2	cyclictest	392774	-21	kworker/2:1+pm	08:40:02	2
348719	99	38	35,1	cyclictest	473826	-21	kworker/2:2+pm	10:06:33	2
348719	99	38	35,1	cyclictest	307956	-21	kworker/2:2+pm	07:50:12	2
348719	99	38	34,3	cyclictest	543794	-21	/usr/share/muni	10:55:02	2
348717	99	38	34,3	cyclictest	413241	-21	kworker/u8:0+events_unbound	09:00:24	1
348714	99	38	36,1	cyclictest	504509	-21	kworker/0:2+pm	10:21:02	0
348714	99	38	35,2	cyclictest	347988	-1	kworker/0:0H+kblockd	09:22:38	0
348714	99	38	34,2	cyclictest	347988	-1	kworker/0:0H+kblockd	08:09:13	0
348714	99	38	27,0	cyclictest	1318	-21	snmpd	07:55:23	0
348727	99	37	34,2	cyclictest	466299	-21	kworker/u8:3+flush-179:0	09:35:27	3
348727	99	37	34,2	cyclictest	443751	-21	kworker/u8:3+flush-179:0	09:15:05	3
348727	99	37	34,2	cyclictest	348080	-21	kworker/u8:3+events_unbound	07:15:04	3
348719	99	37	35,2	cyclictest	473826	-21	kworker/2:2+pm	10:36:31	2
348719	99	37	35,1	cyclictest	567667	-21	kworker/2:1+pm	12:25:47	2
348719	99	37	35,1	cyclictest	473826	-21	kworker/2:2+pm	10:25:11	2
348719	99	37	35,1	cyclictest	392774	-21	kworker/2:1+pm	09:10:18	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17