OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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
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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 rackbslot5s.osadl.org (updated Mon Jul 27, 2026 12:44:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2113912	99	52	41,7	cyclictest	2177730	-21	grep	10:10:26	0
2113925	99	46	37,4	cyclictest	2165842	-21	sendmail	09:40:01	3
2113916	99	45	36,5	cyclictest	2173081	-21	sendmail	10:00:00	1
2113916	99	45	31,10	cyclictest	23	1	ktimers/1	09:05:13	1
2113925	99	43	35,4	cyclictest	0	-21	swapper/3	08:15:00	3
2113925	99	42	35,5	cyclictest	2152064	-21	kworker/u8:0+events_unbound	09:00:26	3
2113925	99	42	32,7	cyclictest	2215432	-21	grep	12:00:24	3
2113925	99	41	28,9	cyclictest	2131710	-21	munin-plugin-st	08:00:01	3
2113925	99	41	21,6	cyclictest	2145206	-21	kworker/u8:1+events_unbound	08:45:14	3
2113921	99	41	32,7	cyclictest	31	1	ktimers/2	10:00:13	2
2113916	99	41	30,7	cyclictest	2140644	-21	fschecks_count	08:25:16	1
2113916	99	41	30,7	cyclictest	2130423	-21	fschecks_time	07:55:16	1
2113925	99	39	29,7	cyclictest	2132141	-21	fschecks_time	08:00:17	3
2113925	99	39	27,9	cyclictest	2200573	-21	sendmail	11:19:59	3
2113912	99	39	28,8	cyclictest	12	1	ktimers/0	08:35:12	0
2113921	99	38	27,6	cyclictest	0	-21	swapper/2	08:20:24	2
2113921	99	37	27,6	cyclictest	0	-21	swapper/2	10:45:25	2
2113921	99	37	27,6	cyclictest	0	-21	swapper/2	07:50:01	2
2113916	99	37	26,7	cyclictest	0	-21	swapper/1	10:55:00	1
2113925	99	36	22,11	cyclictest	39	1	ktimers/3	08:15:10	3
2113921	99	36	28,4	cyclictest	0	-21	swapper/2	11:30:00	2
2113916	99	36	25,5	cyclictest	0	-21	swapper/1	08:35:14	1
2113925	99	35	23,7	cyclictest	0	-21	swapper/3	12:36:02	3
2113925	99	35	23,7	cyclictest	0	-21	swapper/3	12:36:02	3
2113925	99	35	23,7	cyclictest	0	-21	swapper/3	10:40:00	3
2113921	99	35	28,3	cyclictest	0	-21	swapper/2	08:00:00	2
2113921	99	35	25,6	cyclictest	0	-21	swapper/2	09:40:26	2
2113916	99	35	27,4	cyclictest	0	-21	swapper/1	08:25:02	1
2113916	99	35	26,4	cyclictest	0	-21	swapper/1	07:10:16	1
2113916	99	35	26,4	cyclictest	0	-21	swapper/1	07:10:16	1
2113912	99	35	25,7	cyclictest	2115543	-21	audit_send_reply	07:15:01	0
2113912	99	35	25,7	cyclictest	2115543	-21	audit_send_reply	07:15:00	0
2113925	99	34	25,5	cyclictest	0	-21	swapper/3	10:30:16	3
2113925	99	34	25,5	cyclictest	0	-21	swapper/3	08:30:17	3
2113921	99	34	27,4	cyclictest	2173063	-21	munin-plugin-st	10:00:00	2
2113921	99	34	26,5	cyclictest	2219311	-21	cron	12:15:00	2
2113921	99	34	26,4	cyclictest	0	-21	swapper/2	09:45:26	2
2113921	99	34	25,5	cyclictest	0	-21	swapper/2	09:05:27	2
2113916	99	34	26,4	cyclictest	2158996	-21	kthreadd	09:20:01	1
2113916	99	34	25,4	cyclictest	0	-21	swapper/1	11:20:47	1
2113916	99	34	25,4	cyclictest	0	-21	swapper/1	11:20:47	1
2113925	99	33	26,4	cyclictest	2114427	-21	runrttasks	07:10:19	3
2113925	99	33	26,4	cyclictest	2114427	-21	runrttasks	07:10:19	3
2113925	99	33	25,4	cyclictest	0	-21	swapper/3	12:05:17	3
2113925	99	33	25,4	cyclictest	0	-21	swapper/3	10:45:16	3
2113925	99	33	25,4	cyclictest	0	-21	swapper/3	07:35:02	3
2113925	99	33	24,4	cyclictest	0	-21	swapper/3	10:20:00	3
2113925	99	33	22,7	cyclictest	0	-21	swapper/3	11:45:01	3
2113925	99	33	22,7	cyclictest	0	-21	swapper/3	10:10:26	3
2113921	99	33	26,4	cyclictest	0	-21	swapper/2	11:19:59	2
2113921	99	33	25,4	cyclictest	0	-21	swapper/2	08:15:23	2
2113921	99	33	23,6	cyclictest	0	-21	swapper/2	11:35:25	2
2113921	99	33	23,6	cyclictest	0	-21	swapper/2	11:10:27	2
2113921	99	33	23,6	cyclictest	0	-21	swapper/2	10:15:26	2
2113921	99	33	23,6	cyclictest	0	-21	swapper/2	07:20:25	2
2113916	99	33	25,4	cyclictest	2195232	-21	cron	11:05:00	1
2113916	99	33	23,6	cyclictest	2170933	-21	unixbench_singl	09:50:24	1
2113921	99	32	24,5	cyclictest	0	-21	swapper/2	11:25:00	2
2113921	99	32	24,5	cyclictest	0	-21	swapper/2	11:24:59	2
2113921	99	32	24,4	cyclictest	0	-21	swapper/2	10:10:18	2
2113921	99	32	24,4	cyclictest	0	-21	swapper/2	08:04:59	2
2113921	99	32	22,6	cyclictest	0	-21	swapper/2	08:10:27	2
2113921	99	32	21,6	cyclictest	0	-21	swapper/2	12:05:00	2
2113921	99	32	21,6	cyclictest	0	-21	swapper/2	11:45:25	2
2113916	99	32	23,6	cyclictest	2121637	-21	fschecks_count	07:30:16	1
2113916	99	32	23,4	cyclictest	0	-21	swapper/1	10:20:24	1
2113916	99	32	23,4	cyclictest	0	-21	swapper/1	10:20:23	1
2113916	99	32	23,4	cyclictest	0	-21	swapper/1	10:05:00	1
2113916	99	32	22,6	cyclictest	2168999	-21	unixbench_multi	09:45:27	1
2113916	99	32	22,6	cyclictest	0	-21	swapper/1	11:40:18	1
2113916	99	32	21,7	cyclictest	0	-21	swapper/1	12:00:55	1
2113916	99	32	20,6	cyclictest	0	-21	swapper/1	09:30:26	1
2113912	99	32	25,4	cyclictest	2219329	-21	munin-plugin-st	12:15:01	0
2113912	99	32	23,5	cyclictest	0	-21	swapper/0	11:35:25	0
2113912	99	32	23,4	cyclictest	0	-21	swapper/0	09:20:00	0
2113925	99	31	23,4	cyclictest	0	-21	swapper/3	10:50:27	3
2113925	99	31	22,6	cyclictest	0	-21	swapper/3	11:15:00	3
2113925	99	31	19,8	cyclictest	0	-21	swapper/3	08:25:01	3
2113921	99	31	24,3	cyclictest	0	-21	swapper/2	09:25:25	2
2113921	99	31	23,6	cyclictest	0	-21	swapper/2	09:40:01	2
2113921	99	31	21,6	cyclictest	0	-21	swapper/2	07:15:28	2
2113921	99	31	20,7	cyclictest	2212035	-21	grep	11:50:28	2
2113916	99	31	22,5	cyclictest	2179888	-21	grep	10:20:01	1
2113916	99	31	22,4	cyclictest	0	-21	swapper/1	11:05:27	1
2113916	99	31	21,6	cyclictest	2220607	-21	grep	12:15:27	1
2113916	99	31	20,7	cyclictest	2134694	-21	grep	08:05:25	1
2113916	99	31	20,7	cyclictest	2134694	-21	grep	08:05:25	1
2113916	99	31	20,7	cyclictest	0	-21	swapper/1	10:25:27	1
2113912	99	31	22,6	cyclictest	2192193	-21	fschecks_count	10:55:17	0
2113912	99	31	19,7	cyclictest	0	-21	swapper/0	07:55:21	0
2113912	99	31	1,3	cyclictest	0	-21	swapper/0	11:25:13	0
2113925	99	30	24,4	cyclictest	2114209	-21	kworker/u8:0+events_unbound	07:24:46	3
2113925	99	30	21,6	cyclictest	2116351	-21	grep	07:15:04	3
2113925	99	30	19,6	cyclictest	2123625	-21	fschecks_time	07:35:18	3
2113921	99	30	23,3	cyclictest	0	-21	swapper/2	08:55:26	2
2113921	99	30	21,6	cyclictest	0	-21	swapper/2	12:25:00	2
2113921	99	30	21,6	cyclictest	0	-21	swapper/2	12:00:01	2
2113916	99	30	23,5	cyclictest	23	1	ktimers/1	09:20:13	1
2113916	99	30	22,4	cyclictest	2190123	-21	kthreadd	10:50:01	1
2113916	99	30	22,4	cyclictest	0	-21	swapper/1	11:55:29	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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