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 Wed May 27, 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
4115046	99	45	42,2	cyclictest	4094300	-21	kworker/u8:3+events_unbound	19:40:15	1
4115042	99	45	38,5	cyclictest	8581	-21	latency_hist	20:35:01	0
4115046	99	40	37,2	cyclictest	55597	-21	kworker/u8:1+events_unbound	21:25:16	1
4115054	99	39	34,4	cyclictest	19107	-21	kworker/u8:1+flush-259:0	20:50:00	3
4115046	99	39	36,2	cyclictest	4176879	-21	kworker/u8:2+events_unbound	21:10:14	1
4115046	99	39	36,2	cyclictest	4066182	-21	kworker/u8:2+events_unbound	19:20:24	1
4115046	99	39	36,2	cyclictest	201296	-21	kworker/u8:0+events_unbound	00:25:13	1
4115046	99	39	36,2	cyclictest	123423	-21	kworker/u8:2+events_unbound	22:40:22	1
4115046	99	39	33,3	cyclictest	4156100	-21	kworker/u8:0+events_unbound	19:55:23	1
4115046	99	38	36,2	cyclictest	97087	-21	kworker/u8:3+events_unbound	22:50:22	1
4115046	99	38	35,2	cyclictest	77103	-21	kworker/u8:3+events_unbound	21:45:20	1
4115046	99	38	35,2	cyclictest	112913	-21	kworker/u8:1+events_unbound	22:15:21	1
4115046	99	38	33,4	cyclictest	55845	-21	latency_hist	21:20:01	1
4115046	99	37	34,2	cyclictest	248522	-21	kworker/u8:4+events_unbound	00:35:23	1
4115046	99	37	33,3	cyclictest	201296	-21	kworker/u8:0+events_unbound	00:17:30	1
4115046	99	36	33,2	cyclictest	97087	-21	kworker/u8:3+events_unbound	22:35:23	1
4115046	99	36	32,3	cyclictest	4176879	-21	kworker/u8:2+events_unbound	20:30:23	1
4115046	99	36	32,3	cyclictest	4176879	-21	kworker/u8:2+events_unbound	20:30:23	1
4115046	99	36	32,3	cyclictest	216996	-21	apt-get	23:55:03	1
4115046	99	36	32,3	cyclictest	170154	-21	kworker/u8:1+events_unbound	23:45:30	1
4115046	99	36	30,3	cyclictest	4110046	-21	kworker/u8:4+events_unbound	19:51:26	1
4115042	99	36	32,3	cyclictest	4140948	-21	apt-get	19:35:10	0
4115046	99	35	31,3	cyclictest	97087	-21	kworker/u8:3+events_unbound	23:09:29	1
4115046	99	35	31,3	cyclictest	112913	-21	kworker/u8:1+events_unbound	22:20:22	1
4115046	99	35	31,3	cyclictest	102862	-21	kworker/u8:0+flush-259:0	22:25:30	1
4115046	99	35	29,4	cyclictest	154607	-21	diskstats	22:55:14	1
4115046	99	34	30,3	cyclictest	97087	-21	kworker/u8:3+events_unbound	23:42:22	1
4115046	99	34	30,3	cyclictest	4156100	-21	kworker/u8:0+events_unbound	20:05:27	1
4115046	99	33	30,2	cyclictest	4094300	-21	kworker/u8:3+events_unbound	19:15:23	1
4115046	99	33	30,2	cyclictest	227900	-21	kworker/u8:3+events_unbound	00:31:32	1
4115046	99	33	30,2	cyclictest	227900	-21	kworker/u8:3+events_unbound	00:05:30	1
4115046	99	33	30,2	cyclictest	201296	-21	kworker/u8:0+events_unbound	00:20:23	1
4115046	99	33	30,2	cyclictest	19107	-21	kworker/u8:1+events_unbound	20:50:14	1
4115046	99	33	30,2	cyclictest	149205	-21	kworker/u8:4+events_unbound	23:20:23	1
4115046	99	33	29,3	cyclictest	97087	-21	kworker/u8:3+events_unbound	22:03:29	1
4115046	99	32	28,3	cyclictest	4176879	-21	kworker/u8:2+events_unbound	20:21:27	1
4115046	99	32	28,3	cyclictest	4094300	-21	kworker/u8:3+events_unbound	20:35:21	1
4115046	99	32	28,3	cyclictest	4094300	-21	kworker/u8:3+events_unbound	20:10:29	1
4115042	99	32	26,4	cyclictest	142914	-21	ntpq	22:40:19	0
4115050	99	31	25,4	cyclictest	335557	-21	systemd-journal	21:31:30	2
4115046	99	31	28,2	cyclictest	76890	-21	kworker/u8:1+events_unbound	21:41:32	1
4115046	99	31	28,2	cyclictest	4094300	-21	kworker/u8:3+events_unbound	19:45:20	1
4115046	99	31	28,2	cyclictest	29229	-21	kworker/u8:3+flush-259:0	21:05:20	1
4115046	99	31	28,2	cyclictest	149205	-21	kworker/u8:4+events_unbound	23:30:13	1
4115046	99	31	27,3	cyclictest	4110046	-21	kworker/u8:4+events_unbound	19:39:29	1
4115046	99	31	27,3	cyclictest	149205	-21	kworker/u8:4+events_unbound	23:10:17	1
4115054	99	30	24,4	cyclictest	4094300	-21	kworker/u8:3+flush-259:0	19:50:00	3
4115050	99	30	27,2	cyclictest	123423	-21	kworker/u8:2+events_unbound	22:45:15	2
4115050	99	30	26,3	cyclictest	97087	-21	kworker/u8:3+events_unbound	22:10:15	2
4115050	99	30	24,4	cyclictest	4130408	-21	latency_hist	19:25:01	2
4115046	99	30	27,2	cyclictest	4110046	-21	kworker/u8:4+events_unbound	19:10:15	1
4115046	99	30	27,2	cyclictest	149205	-21	kworker/u8:4+events_unbound	23:25:22	1
4115046	99	30	26,3	cyclictest	97087	-21	kworker/u8:3+events_unbound	22:05:30	1
4115042	99	30	25,3	cyclictest	66661	-21	base64	21:30:01	0
4115042	99	30	0,28	cyclictest	1	-21	systemd	21:10:00	0
4115042	99	30	0,28	cyclictest	1	-21	systemd	19:28:28	0
4115054	99	29	22,5	cyclictest	65222	-21	ntpq	21:25:20	3
4115046	99	29	25,3	cyclictest	4110046	-21	kworker/u8:4+events_unbound	20:41:28	1
4115046	99	29	25,3	cyclictest	149205	-21	kworker/u8:4+events_unbound	23:00:30	1
4115042	99	29	24,4	cyclictest	335557	-21	systemd-journal	19:54:59	0
4115050	99	28	24,3	cyclictest	97087	-21	kworker/u8:3+flush-259:0	22:50:26	2
4115046	99	28	25,2	cyclictest	97087	-21	kworker/u8:3+events_unbound	23:16:31	1
4115046	99	28	25,2	cyclictest	4094300	-21	kworker/u8:3+events_unbound	20:15:24	1
4115046	99	28	24,3	cyclictest	97087	-21	kworker/u8:3+events_unbound	23:36:30	1
4115046	99	28	24,3	cyclictest	4176879	-21	kworker/u8:2+events_unbound	21:30:30	1
4115046	99	28	23,4	cyclictest	216109	-21	ntpq	23:50:22	1
4115042	99	28	24,3	cyclictest	4176879	-21	kworker/u8:2+flush-259:0	21:10:18	0
4115042	99	28	0,27	cyclictest	1	-21	systemd	23:39:28	0
4115050	99	27	21,5	cyclictest	221741	-21	ntpq	23:55:21	2
4115046	99	27	25,2	cyclictest	201296	-21	kworker/u8:0+events_unbound	00:04:29	1
4115046	99	27	24,2	cyclictest	123423	-21	kworker/u8:2+flush-259:0	22:30:23	1
4115046	99	27	23,3	cyclictest	4176879	-21	kworker/u8:2+events_unbound	21:01:31	1
4115042	99	27	23,3	cyclictest	227900	-21	kworker/u8:3+events_unbound	00:35:01	0
4115042	99	27	23,3	cyclictest	149205	-21	kworker/u8:4+flush-259:0	23:25:17	0
4115042	99	27	20,5	cyclictest	335557	-21	systemd-journal	22:29:59	0
4115054	99	26	21,4	cyclictest	4110046	-21	kworker/u8:4+flush-259:0	19:20:00	3
4115054	99	26	21,3	cyclictest	4192445	-21	apt-get	20:25:11	3
4115054	99	26	19,5	cyclictest	195042	-21	ntpq	23:30:20	3
4115050	99	26	23,2	cyclictest	97087	-21	kworker/u8:3+flush-259:0	22:30:15	2
4115050	99	26	23,2	cyclictest	102899	-21	apt-get	22:05:09	2
4115046	99	26	23,3	cyclictest	4176879	-21	kworker/u8:2+events_unbound	22:14:29	1
4115046	99	26	22,3	cyclictest	55597	-21	kworker/u8:1+events_unbound	21:21:51	1
4115046	99	26	22,3	cyclictest	4176879	-21	kworker/u8:2+events_unbound	21:57:31	1
4115046	99	26	19,5	cyclictest	233461	-21	diskstats	00:10:14	1
4115042	99	26	23,2	cyclictest	4094300	-21	kworker/u8:3+events_unbound	19:45:18	0
4115042	99	26	23,2	cyclictest	149205	-21	kworker/u8:4+events_unbound	23:00:21	0
4115042	99	26	21,3	cyclictest	174434	-21	ntpq	23:10:22	0
4115054	99	25	20,3	cyclictest	56111	-21	apt-get	21:20:13	3
4115054	99	25	19,4	cyclictest	70871	-21	ntpq	21:30:24	3
4115054	99	25	14,9	cyclictest	118040	-21	cron	22:20:00	3
4115050	99	25	22,2	cyclictest	4110046	-21	kworker/u8:4+events_unbound	19:25:16	2
4115050	99	25	21,3	cyclictest	4094300	-21	kworker/u8:3+events_unbound	19:40:23	2
4115050	99	25	21,3	cyclictest	29229	-21	kworker/u8:3+events_unbound	21:05:22	2
4115050	99	25	21,3	cyclictest	29229	-21	kworker/u8:3+events_unbound	21:03:30	2
4115046	99	25	22,2	cyclictest	4176879	-21	kworker/u8:2+events_unbound	20:26:44	1
4115042	99	25	22,2	cyclictest	4094300	-21	kworker/u8:3+events_unbound	20:15:00	0
4115042	99	25	22,2	cyclictest	201296	-21	kworker/u8:0+events_unbound	00:20:20	0
4115042	99	25	21,3	cyclictest	19107	-21	kworker/u8:1+events_unbound	20:46:48	0
4115042	99	25	20,4	cyclictest	66349	-21	gpgv	21:30:01	0
4115054	99	24	18,4	cyclictest	4176879	-21	kworker/u8:2+flush-259:0	20:20:17	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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