OSADL QA Farm on Real-time of Mainline Linux

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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 Thu Aug 27, 2026 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
21771	99	55	49,5	cyclictest	63085	-21	latency_hist	19:50:00	3
21763	99	54	50,3	cyclictest	250986	-21	apt-get	22:50:13	0
21763	99	49	44,2	cyclictest	141439	-21	kworker/u8:0+events_unbound	21:10:22	0
21763	99	48	44,3	cyclictest	126220	-21	apt-get	20:50:12	0
21768	99	45	41,3	cyclictest	214716	-21	kworker/u8:1+flush-259:0	23:05:24	2
21768	99	45	40,3	cyclictest	105507	-21	kworker/u8:2+flush-259:0	21:40:23	2
21765	99	44	37,2	cyclictest	193798	-21	kworker/u8:2+events_unbound	22:10:01	1
21765	99	43	40,2	cyclictest	84177	-21	kworker/u8:2+events_unbound	20:20:16	1
21768	99	41	37,3	cyclictest	42444	-21	kworker/u8:0+flush-259:0	20:25:24	2
21771	99	40	36,3	cyclictest	105507	-21	kworker/u8:2+flush-259:0	21:15:24	3
21765	99	40	37,2	cyclictest	131139	-21	kworker/u8:3+events_unbound	21:05:16	1
21771	99	38	35,2	cyclictest	120832	-21	kworker/u8:0+flush-259:0	20:55:00	3
21771	99	38	30,2	cyclictest	214716	-21	kworker/u8:1+flush-259:0	22:30:24	3
21768	99	38	35,2	cyclictest	131139	-21	kworker/u8:3+flush-259:0	21:00:24	2
21765	99	38	35,2	cyclictest	173067	-21	kworker/u8:1+events_unbound	21:50:14	1
21765	99	38	35,2	cyclictest	173067	-21	kworker/u8:1+events_unbound	21:50:14	1
21765	99	38	35,2	cyclictest	152243	-21	kworker/u8:5+events_unbound	21:20:49	1
21765	99	38	34,3	cyclictest	287550	-21	apt-get	23:25:10	1
21771	99	37	32,3	cyclictest	323271	-21	kworker/u8:3+flush-259:0	00:05:27	3
21771	99	36	33,2	cyclictest	334258	-21	kworker/u8:1+flush-259:0	00:15:23	3
21771	99	35	32,2	cyclictest	183655	-21	kworker/u8:3+flush-259:0	23:00:10	3
21768	99	35	31,2	cyclictest	271656	-21	kworker/u8:0+events_unbound	23:25:00	2
21765	99	35	32,2	cyclictest	183655	-21	kworker/u8:3+events_unbound	23:45:24	1
21768	99	34	28,4	cyclictest	63629	-21	cp	19:50:01	2
21765	99	34	31,2	cyclictest	313123	-21	kworker/u8:0+events_unbound	00:03:27	1
21765	99	34	29,3	cyclictest	344823	-21	apt-get	00:20:12	1
21763	99	34	31,2	cyclictest	302816	-21	kworker/u8:2+events_unbound	23:50:17	0
21763	99	34	31,2	cyclictest	193798	-21	kworker/u8:2+events_unbound	22:15:14	0
21763	99	34	30,3	cyclictest	105507	-21	kworker/u8:2+flush-259:0	21:30:21	0
21768	99	33	30,2	cyclictest	183444	-21	kworker/u8:0+flush-259:0	21:50:25	2
21768	99	33	30,2	cyclictest	183444	-21	kworker/u8:0+flush-259:0	21:50:24	2
21765	99	33	30,2	cyclictest	302816	-21	kworker/u8:2+events_unbound	23:50:14	1
21765	99	33	30,2	cyclictest	214716	-21	kworker/u8:1+events_unbound	22:20:16	1
21763	99	33	30,2	cyclictest	52796	-21	kworker/u8:1+flush-259:0	20:15:15	0
21763	99	33	30,2	cyclictest	261071	-21	kworker/u8:2+flush-259:0	23:10:20	0
21763	99	33	30,2	cyclictest	250768	-21	kworker/u8:0+events_unbound	22:55:15	0
21768	99	32	29,2	cyclictest	120832	-21	kworker/u8:0+flush-259:0	20:50:24	2
21765	99	32	29,2	cyclictest	52796	-21	kworker/u8:1+events_unbound	19:40:29	1
21765	99	32	29,2	cyclictest	214716	-21	kworker/u8:1+events_unbound	22:30:17	1
21765	99	32	29,2	cyclictest	183655	-21	kworker/u8:3+events_unbound	23:40:15	1
21765	99	32	29,2	cyclictest	105507	-21	kworker/u8:2+events_unbound	21:15:22	1
21763	99	32	29,2	cyclictest	183655	-21	kworker/u8:3+events_unbound	23:50:00	0
21771	99	31	28,2	cyclictest	52796	-21	kworker/u8:1+events_unbound	19:55:24	3
21765	99	31	28,2	cyclictest	52796	-21	kworker/u8:1+events_unbound	20:10:14	1
21765	99	31	28,2	cyclictest	42444	-21	kworker/u8:0+events_unbound	19:30:23	1
21765	99	31	28,2	cyclictest	27143	-21	kworker/u8:3+flush-259:0	19:25:15	1
21765	99	31	28,2	cyclictest	1442	-21	kworker/u8:2+events_unbound	19:35:14	1
21765	99	31	28,2	cyclictest	105507	-21	kworker/u8:2+flush-259:0	21:30:19	1
21765	99	31	27,3	cyclictest	131377	-21	apt-get	20:55:12	1
21763	99	31	28,2	cyclictest	42444	-21	kworker/u8:0+events_unbound	20:00:12	0
21763	99	31	28,2	cyclictest	271656	-21	kworker/u8:0+events_unbound	23:25:23	0
21763	99	31	28,2	cyclictest	214716	-21	kworker/u8:1+events_unbound	22:35:23	0
21768	99	30	27,2	cyclictest	42444	-21	kworker/u8:0+flush-259:0	19:45:20	2
21765	99	30	27,2	cyclictest	42444	-21	kworker/u8:0+events_unbound	20:25:23	1
21765	99	30	27,2	cyclictest	282182	-21	kworker/u8:1+events_unbound	23:35:23	1
21765	99	30	23,5	cyclictest	188605	-21	latency_hist	21:50:01	1
21763	99	30	27,2	cyclictest	323271	-21	kworker/u8:3+events_unbound	00:20:25	0
21763	99	30	27,2	cyclictest	302816	-21	kworker/u8:2+events_unbound	00:10:26	0
21763	99	30	27,2	cyclictest	193798	-21	kworker/u8:2+events_unbound	22:10:22	0
21763	99	30	27,2	cyclictest	183444	-21	kworker/u8:0+events_unbound	22:05:15	0
21763	99	30	24,4	cyclictest	323271	-21	kworker/u8:3+flush-259:0	00:30:00	0
21765	99	29	26,2	cyclictest	52796	-21	kworker/u8:1+events_unbound	20:05:17	1
21765	99	29	26,2	cyclictest	105507	-21	kworker/u8:2+flush-259:0	21:10:25	1
21765	99	29	23,4	cyclictest	292704	-21	apt-get	23:30:13	1
21763	99	29	26,2	cyclictest	27143	-21	kworker/u8:3+flush-259:0	19:20:25	0
21771	99	28	25,2	cyclictest	42444	-21	kworker/u8:0+events_unbound	20:20:26	3
21771	99	28	25,2	cyclictest	3757631	-21	kworker/u8:5+flush-259:0	19:15:15	3
21771	99	28	25,2	cyclictest	183655	-21	kworker/u8:3+events_unbound	23:45:18	3
21765	99	28	25,2	cyclictest	105507	-21	kworker/u8:2+events_unbound	20:35:15	1
21765	99	28	24,3	cyclictest	199217	-21	apt-get	22:00:10	1
21765	99	28	24,3	cyclictest	105507	-21	kworker/u8:2+flush-259:0	20:45:18	1
21763	99	28	25,2	cyclictest	250768	-21	kworker/u8:0+events_unbound	23:00:23	0
21763	99	28	25,2	cyclictest	131139	-21	kworker/u8:3+events_unbound	21:05:24	0
21768	99	27	24,2	cyclictest	42444	-21	kworker/u8:0+flush-259:0	20:05:25	2
21768	99	27	24,2	cyclictest	193798	-21	kworker/u8:2+flush-259:0	22:17:15	2
21768	99	27	23,3	cyclictest	261071	-21	kworker/u8:2+flush-259:0	23:10:16	2
21765	99	27	24,2	cyclictest	323271	-21	kworker/u8:3+events_unbound	00:35:14	1
21765	99	27	24,2	cyclictest	302816	-21	kworker/u8:2+flush-259:0	00:08:35	1
21765	99	27	24,2	cyclictest	214716	-21	kworker/u8:1+events_unbound	22:35:15	1
21765	99	27	24,2	cyclictest	120832	-21	kworker/u8:0+events_unbound	20:50:23	1
21763	99	27	24,2	cyclictest	110484	-21	kworker/u8:4+events_unbound	20:40:21	0
21763	99	27	23,3	cyclictest	105507	-21	kworker/u8:2+flush-259:0	20:35:20	0
21763	99	27	21,4	cyclictest	307130	-21	ntpq	23:40:21	0
21771	99	26	23,2	cyclictest	214716	-21	kworker/u8:1+flush-259:0	22:40:20	3
21771	99	26	23,2	cyclictest	110484	-21	kworker/u8:4+flush-259:0	20:50:01	3
21765	99	26	23,2	cyclictest	271656	-21	kworker/u8:0+events_unbound	23:15:04	1
21765	99	26	23,2	cyclictest	214716	-21	kworker/u8:1+events_unbound	22:45:13	1
21763	99	26	23,2	cyclictest	173067	-21	kworker/u8:1+events_unbound	21:45:21	0
21763	99	26	23,2	cyclictest	152243	-21	kworker/u8:5+events_unbound	21:20:14	0
21763	99	26	22,3	cyclictest	105507	-21	kworker/u8:2+events_unbound	21:40:23	0
21763	99	26	20,5	cyclictest	225081	-21	apt-get	22:25:11	0
21771	99	25	22,2	cyclictest	214716	-21	kworker/u8:1+events_unbound	22:20:19	3
21765	99	25	22,2	cyclictest	250768	-21	kworker/u8:0+events_unbound	22:56:10	1
21765	99	25	21,2	cyclictest	105507	-21	kworker/u8:2+events_unbound	21:29:14	1
21763	99	25	22,2	cyclictest	282182	-21	kworker/u8:1+events_unbound	23:36:15	0
21771	99	24	21,2	cyclictest	105507	-21	kworker/u8:2+flush-259:0	20:55:17	3
21768	99	24	21,2	cyclictest	3757631	-21	kworker/u8:5+events_unbound	19:20:02	2
21765	99	24	21,2	cyclictest	110484	-21	kworker/u8:4+flush-259:0	20:40:24	1
21765	99	24	20,3	cyclictest	42444	-21	kworker/u8:0+events_unbound	20:33:16	1
21763	99	24	22,2	cyclictest	183655	-21	kworker/u8:3+events_unbound	23:20:14	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:34