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 shadow in rack #e, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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 rackeslot4s.osadl.org (updated Sat Jun 06, 2026 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2444992	99	44	38,4	cyclictest	2710653	-21	latency_hist	23:25:01	3
2444987	99	44	41,2	cyclictest	2549702	-21	kworker/u8:0+flush-259:0	21:30:01	1
2444992	99	43	39,2	cyclictest	2658735	-21	gpgv	22:35:01	3
2444992	99	42	38,3	cyclictest	2549702	-21	kworker/u8:0+events_unbound	21:45:02	3
2444992	99	40	37,2	cyclictest	2549702	-21	kworker/u8:0+events_unbound	21:37:30	3
2444992	99	40	36,3	cyclictest	2471205	-21	kworker/u8:3+events_unbound	19:37:31	3
2444984	99	40	32,6	cyclictest	335557	-21	systemd-journal	20:55:00	0
2444987	99	39	34,3	cyclictest	2684909	-21	kworker/u8:0+flush-259:0	23:20:22	1
2444987	99	39	33,4	cyclictest	2742212	-21	kworker/u8:0+flush-259:0	23:55:15	1
2444984	99	39	31,6	cyclictest	2658805	-21	cp	22:35:00	0
2444992	99	38	35,2	cyclictest	2518170	-21	kworker/u8:2+events_unbound	20:20:25	3
2444992	99	38	34,3	cyclictest	2653664	-21	kworker/u8:2+events_unbound	22:55:14	3
2444987	99	38	34,3	cyclictest	2653451	-21	kworker/u8:1+flush-259:0	23:00:20	1
2444992	99	37	34,3	cyclictest	2705517	-21	kworker/u8:1+events_unbound	23:31:18	3
2444992	99	37	34,2	cyclictest	2752767	-21	kworker/u8:4+events_unbound	00:05:15	3
2444992	99	37	33,3	cyclictest	2493289	-21	kworker/u8:0+events_unbound	20:10:29	3
2444992	99	37	33,3	cyclictest	2429517	-21	kworker/u8:2+events_unbound	19:25:29	3
2444988	99	37	31,4	cyclictest	2518426	-21	latency_hist	20:20:01	2
2444987	99	37	31,4	cyclictest	2664480	-21	apt-get	22:40:12	1
2444987	99	37	30,5	cyclictest	2626251	-21	ntpq	22:00:20	1
2444984	99	37	30,5	cyclictest	2731277	-21	apt-get	23:45:01	0
2444992	99	36	33,2	cyclictest	2591121	-21	kworker/u8:4+events_unbound	21:32:30	3
2444988	99	36	30,4	cyclictest	2679701	-21	latency_hist	22:55:00	2
2444992	99	35	33,2	cyclictest	2752767	-21	kworker/u8:4+events_unbound	00:33:51	3
2444992	99	35	32,2	cyclictest	2450147	-21	kworker/u8:1+events_unbound	19:55:24	3
2444992	99	35	31,3	cyclictest	2493289	-21	kworker/u8:0+events_unbound	20:25:30	3
2444992	99	34	31,2	cyclictest	2752767	-21	kworker/u8:4+events_unbound	00:15:24	3
2444992	99	34	31,2	cyclictest	2725753	-21	kworker/u8:3+events_unbound	00:22:30	3
2444992	99	34	30,3	cyclictest	2653664	-21	kworker/u8:2+events_unbound	22:53:30	3
2444992	99	34	27,5	cyclictest	2788883	-21	latency_hist	00:40:00	3
2444987	99	34	31,2	cyclictest	2752767	-21	kworker/u8:4+events_unbound	00:25:19	1
2444987	99	34	30,3	cyclictest	2549702	-21	kworker/u8:0+flush-259:0	21:35:20	1
2444984	99	34	30,3	cyclictest	2617078	-21	apt-get	21:55:12	0
2444984	99	34	30,3	cyclictest	2617078	-21	apt-get	21:55:11	0
2444984	99	34	28,4	cyclictest	335557	-21	systemd-journal	22:39:30	0
2444992	99	33	29,3	cyclictest	2684909	-21	kworker/u8:0+events_unbound	23:19:30	3
2444987	99	33	29,3	cyclictest	2627164	-21	kworker/u8:4+flush-259:0	22:05:15	1
2444992	99	32	29,2	cyclictest	2725753	-21	kworker/u8:3+events_unbound	23:42:32	3
2444992	99	32	29,2	cyclictest	2493289	-21	kworker/u8:0+events_unbound	20:15:13	3
2444988	99	32	25,5	cyclictest	2482538	-21	cp	19:45:01	2
2444987	99	31	28,2	cyclictest	2549702	-21	kworker/u8:0+flush-259:0	21:55:21	1
2444987	99	31	28,2	cyclictest	2549702	-21	kworker/u8:0+flush-259:0	21:55:20	1
2444987	99	31	27,3	cyclictest	2544801	-21	apt-get	20:45:10	1
2444984	99	31	26,3	cyclictest	2575733	-21	apt-get	21:15:11	0
2444984	99	31	26,3	cyclictest	2544187	-21	kworker/u8:2+events_unbound	21:25:16	0
2444984	99	31	25,4	cyclictest	335557	-21	systemd-journal	19:40:00	0
2444992	99	30	28,2	cyclictest	2529169	-21	kworker/u8:3+events_unbound	20:35:27	3
2444992	99	30	27,3	cyclictest	2429517	-21	kworker/u8:2+events_unbound	19:44:31	3
2444992	99	30	27,2	cyclictest	2627164	-21	kworker/u8:4+events_unbound	22:08:31	3
2444992	99	30	27,2	cyclictest	2549702	-21	kworker/u8:0+events_unbound	21:11:30	3
2444992	99	30	27,2	cyclictest	2471205	-21	kworker/u8:3+events_unbound	19:45:27	3
2444992	99	30	26,3	cyclictest	2642726	-21	kworker/u8:0+events_unbound	22:38:31	3
2444988	99	30	23,5	cyclictest	2475464	-21	ntpq	19:35:20	2
2444988	99	29	23,4	cyclictest	2752767	-21	kworker/u8:4+flush-259:0	00:40:01	2
2444987	99	29	24,3	cyclictest	2570326	-21	latency_hist	21:10:00	1
2444992	99	28	24,3	cyclictest	2590912	-21	kworker/u8:1+events_unbound	21:54:31	3
2444992	99	28	24,3	cyclictest	2590912	-21	kworker/u8:1+events_unbound	21:54:30	3
2444992	99	28	23,4	cyclictest	2758199	-21	apt-get	00:10:11	3
2444992	99	28	23,4	cyclictest	2758199	-21	apt-get	00:10:10	3
2444987	99	28	25,2	cyclictest	2684909	-21	kworker/u8:0+events_unbound	23:29:31	1
2444987	99	28	25,2	cyclictest	2560032	-21	kworker/u8:3+events_unbound	22:10:21	1
2444987	99	28	24,3	cyclictest	353332	-21	kworker/u8:4+flush-259:0	19:20:15	1
2444984	99	28	24,3	cyclictest	2498057	-21	apt-get	20:00:12	0
2444992	99	27	23,3	cyclictest	2450147	-21	kworker/u8:1+events_unbound	20:50:44	3
2444992	99	27	20,5	cyclictest	335557	-21	systemd-journal	19:15:00	3
2444988	99	27	19,6	cyclictest	2555290	-21	diskstats	20:55:14	2
2444987	99	27	23,3	cyclictest	2471205	-21	kworker/u8:3+flush-259:0	19:40:20	1
2444984	99	27	21,4	cyclictest	2611673	-21	true	21:50:00	0
2444992	99	26	23,2	cyclictest	2684909	-21	kworker/u8:0+events_unbound	23:45:25	3
2444992	99	26	23,2	cyclictest	2684909	-21	kworker/u8:0+events_unbound	23:10:25	3
2444992	99	26	23,2	cyclictest	2560032	-21	kworker/u8:3+events_unbound	21:43:31	3
2444987	99	26	23,2	cyclictest	2742212	-21	kworker/u8:0+events_unbound	00:00:13	1
2444987	99	26	23,2	cyclictest	2560032	-21	kworker/u8:3+events_unbound	22:25:18	1
2444987	99	26	23,2	cyclictest	2450147	-21	kworker/u8:1+events_unbound	20:00:22	1
2444987	99	26	22,3	cyclictest	2549702	-21	kworker/u8:0+flush-259:0	21:00:46	1
2444987	99	26	21,4	cyclictest	2684909	-21	kworker/u8:0+events_unbound	23:41:19	1
2444984	99	26	19,5	cyclictest	2720985	-21	latency_hist	23:35:01	0
2444992	99	25	23,2	cyclictest	2736705	-21	kworker/u8:1+events_unbound	23:51:31	3
2444992	99	25	22,2	cyclictest	2669397	-21	kworker/u8:3+events_unbound	22:46:31	3
2444992	99	25	22,2	cyclictest	2653664	-21	kworker/u8:2+events_unbound	23:00:29	3
2444992	99	25	22,2	cyclictest	2544187	-21	kworker/u8:2+events_unbound	20:44:31	3
2444992	99	25	19,3	cyclictest	2450147	-21	kworker/u8:1+events_unbound	20:34:24	3
2444987	99	25	19,4	cyclictest	335557	-21	systemd-journal	23:35:31	1
2444984	99	25	17,6	cyclictest	2731275	-21	latency_hist	23:45:00	0
2444992	99	24	22,2	cyclictest	2560032	-21	kworker/u8:3+events_unbound	22:25:26	3
2444992	99	24	21,2	cyclictest	2450147	-21	kworker/u8:1+events_unbound	19:32:25	3
2444987	99	24	21,2	cyclictest	2778423	-21	kworker/u8:0+events_unbound	00:35:15	1
2444987	99	24	20,3	cyclictest	2752767	-21	kworker/u8:4+events_unbound	00:20:14	1
2444987	99	24	20,3	cyclictest	2669397	-21	kworker/u8:3+flush-259:0	23:05:24	1
2444987	99	24	20,3	cyclictest	2450389	-21	apt-get	19:15:12	1
2444987	99	24	18,4	cyclictest	2560000	-21	latency_hist	21:00:01	1
2444984	99	24	18,4	cyclictest	2752767	-21	kworker/u8:4+flush-259:0	00:15:30	0
2444992	99	23	20,2	cyclictest	2627165	-21	kworker/u8:5+events_unbound	22:11:30	3
2444992	99	23	20,2	cyclictest	2450147	-21	kworker/u8:1+events_unbound	19:19:43	3
2444992	99	23	15,3	cyclictest	2455540	-21	apt-get	19:20:11	3
2444988	99	23	19,3	cyclictest	2658617	-21	latency_hist	22:35:00	2
2444988	99	23	19,3	cyclictest	2450147	-21	kworker/u8:1+events_unbound	20:45:16	2
2444987	99	23	19,3	cyclictest	2493289	-21	kworker/u8:0+events_unbound	20:25:14	1
2444987	99	23	17,4	cyclictest	335557	-21	systemd-journal	19:36:29	1
2444987	99	23	17,4	cyclictest	2533448	-21	ntpq	20:30:21	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2021-09-01 - 00:34