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 Jul 30, 2026 12:44:04)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2900866	99	62	59,2	cyclictest	2957899	-21	kworker/u8:1+flush-259:0	08:25:00	2
2900861	99	58	54,3	cyclictest	2993745	-21	kworker/u8:0+events_unbound	08:58:47	0
2900863	99	55	50,4	cyclictest	3073711	-21	gpgv	09:55:00	1
2900861	99	52	46,4	cyclictest	3203543	-21	ntpq	11:55:21	0
2900871	99	49	47,1	cyclictest	3015280	-21	lspci	08:58:18	3
2900866	99	49	41,6	cyclictest	3220430	-21	latency_hist	12:15:00	2
2900863	99	49	43,4	cyclictest	335557	-21	systemd-journal	09:36:30	1
2900863	99	46	43,2	cyclictest	3015280	-21	lspci	08:58:19	1
2900866	99	44	40,3	cyclictest	335557	-21	systemd-journal	09:20:00	2
2900861	99	43	40,2	cyclictest	3073821	-21	kworker/u8:0+events_unbound	10:40:10	0
2900861	99	42	40,2	cyclictest	3183775	-21	kworker/u8:3+events_unbound	12:15:23	0
2900861	99	40	38,2	cyclictest	3063342	-21	kworker/u8:1+events_unbound	10:50:01	0
2900866	99	39	35,3	cyclictest	3021208	-21	kworker/u8:4+events_unbound	09:31:26	2
2900866	99	39	35,3	cyclictest	2993745	-21	kworker/u8:0+flush-259:0	08:58:43	2
2900861	99	39	36,2	cyclictest	3120874	-21	kworker/u8:3+events_unbound	11:15:21	0
2900861	99	39	35,3	cyclictest	3009814	-21	kworker/u8:2+flush-259:0	09:30:00	0
2900866	99	38	34,3	cyclictest	3073821	-21	kworker/u8:0+flush-259:0	10:35:01	2
2900866	99	38	33,4	cyclictest	2993793	-21	latency_hist	08:40:00	2
2900863	99	38	33,3	cyclictest	3215525	-21	apt-get	12:10:12	1
2900866	99	37	34,3	cyclictest	3183775	-21	kworker/u8:3+flush-259:0	12:20:23	2
2900863	99	37	31,4	cyclictest	2921484	-21	latency_hist	07:30:00	1
2900861	99	37	34,2	cyclictest	2993745	-21	kworker/u8:0+events_unbound	09:00:58	0
2900861	99	37	33,3	cyclictest	3157504	-21	latency_hist	11:15:01	0
2900866	99	36	34,1	cyclictest	3183775	-21	kworker/u8:3+events_unbound	12:30:00	2
2900866	99	36	32,3	cyclictest	3167573	-21	kworker/u8:0+flush-259:0	11:25:00	2
2900861	99	36	34,2	cyclictest	2900597	-21	kworker/u8:2+events_unbound	08:02:58	0
2900861	99	36	33,2	cyclictest	3063342	-21	kworker/u8:1+events_unbound	10:00:11	0
2900871	99	35	32,2	cyclictest	3173053	-21	kworker/u8:1+events_unbound	11:45:21	3
2900866	99	35	32,2	cyclictest	2978515	-21	kworker/u8:4+flush-259:0	08:45:01	2
2900866	99	35	32,2	cyclictest	2957899	-21	kworker/u8:1+events_unbound	08:05:24	2
2900866	99	35	29,4	cyclictest	3084352	-21	latency_hist	10:05:00	2
2900861	99	35	32,2	cyclictest	3021208	-21	kworker/u8:4+events_unbound	09:21:59	0
2900871	99	34	28,4	cyclictest	335557	-21	systemd-journal	11:55:01	3
2900866	99	34	30,3	cyclictest	2993745	-21	kworker/u8:0+flush-259:0	08:45:57	2
2900866	99	34	28,4	cyclictest	3100296	-21	latency_hist	10:20:00	2
2900863	99	34	29,3	cyclictest	3189179	-21	apt-get	11:45:09	1
2900861	99	34	31,2	cyclictest	3183775	-21	kworker/u8:3+events_unbound	12:20:13	0
2900861	99	34	31,2	cyclictest	3152343	-21	kworker/u8:2+flush-259:0	11:40:16	0
2900861	99	34	31,2	cyclictest	2957899	-21	kworker/u8:1+events_unbound	08:07:57	0
2900861	99	34	31,2	cyclictest	2851841	-21	kworker/u8:4+events_unbound	07:10:22	0
2900861	99	34	29,3	cyclictest	335557	-21	systemd-journal	07:25:00	0
2900866	99	33	30,2	cyclictest	2900597	-21	kworker/u8:2+flush-259:0	07:39:32	2
2900866	99	33	27,5	cyclictest	3136418	-21	latency_hist	10:55:01	2
2900863	99	33	28,4	cyclictest	3063590	-21	apt-get	09:45:14	1
2900861	99	33	30,2	cyclictest	2978306	-21	kworker/u8:2+events_unbound	08:30:23	0
2900871	99	32	29,2	cyclictest	3073821	-21	kworker/u8:0+flush-259:0	10:40:01	3
2900871	99	32	29,2	cyclictest	3021208	-21	kworker/u8:4+flush-259:0	09:45:00	3
2900871	99	32	28,3	cyclictest	2900597	-21	kworker/u8:2+events_unbound	07:52:59	3
2900861	99	32	30,2	cyclictest	3009814	-21	kworker/u8:2+events_unbound	09:08:59	0
2900861	99	32	30,1	cyclictest	3021209	-21	kworker/u8:5+flush-259:0	09:35:17	0
2900861	99	32	29,2	cyclictest	3204451	-21	kworker/u8:2+events_unbound	12:11:58	0
2900861	99	32	29,2	cyclictest	3173053	-21	kworker/u8:1+events_unbound	12:05:14	0
2900861	99	32	29,2	cyclictest	3152343	-21	kworker/u8:2+events_unbound	11:30:57	0
2900871	99	31	27,3	cyclictest	2900597	-21	kworker/u8:2+events_unbound	07:24:17	3
2900866	99	31	28,2	cyclictest	3021208	-21	kworker/u8:4+events_unbound	09:44:58	2
2900861	99	31	29,2	cyclictest	3009814	-21	kworker/u8:2+events_unbound	09:12:58	0
2900861	99	31	28,3	cyclictest	2916343	-21	kworker/u8:4+events_unbound	07:39:39	0
2900861	99	31	28,2	cyclictest	3152343	-21	kworker/u8:2+events_unbound	11:27:59	0
2900861	99	31	27,3	cyclictest	3173053	-21	kworker/u8:1+events_unbound	12:02:58	0
2900871	99	30	27,2	cyclictest	3183775	-21	kworker/u8:3+events_unbound	11:40:58	3
2900871	99	30	26,3	cyclictest	3189338	-21	kworker/u8:0+events_unbound	11:55:06	3
2900866	99	30	27,2	cyclictest	3241242	-21	kworker/u8:1+events_unbound	12:39:59	2
2900866	99	30	27,2	cyclictest	3063342	-21	kworker/u8:1+flush-259:0	11:20:01	2
2900863	99	30	24,4	cyclictest	335557	-21	systemd-journal	07:22:47	1
2900861	99	30	28,2	cyclictest	3063342	-21	kworker/u8:1+events_unbound	10:12:58	0
2900861	99	30	27,2	cyclictest	3173053	-21	kworker/u8:1+events_unbound	11:45:14	0
2900861	99	30	27,2	cyclictest	3084581	-21	kworker/u8:3+events_unbound	10:09:58	0
2900861	99	30	27,2	cyclictest	3021209	-21	kworker/u8:5+events_unbound	09:33:58	0
2900861	99	30	27,2	cyclictest	2900597	-21	kworker/u8:2+events_unbound	07:30:15	0
2900861	99	30	25,4	cyclictest	3136620	-21	gpgv	10:55:00	0
2900871	99	29	27,2	cyclictest	3073821	-21	kworker/u8:0+events_unbound	10:27:58	3
2900871	99	29	26,2	cyclictest	3009814	-21	kworker/u8:2+flush-259:0	09:20:01	3
2900866	99	29	26,2	cyclictest	3073821	-21	kworker/u8:0+events_unbound	10:35:16	2
2900863	99	29	24,4	cyclictest	335557	-21	systemd-journal	08:35:00	1
2900861	99	29	26,2	cyclictest	3073821	-21	kworker/u8:0+events_unbound	10:30:15	0
2900861	99	29	26,2	cyclictest	2900597	-21	kworker/u8:2+events_unbound	07:50:12	0
2900861	99	29	26,2	cyclictest	2900597	-21	kworker/u8:2+events_unbound	07:40:20	0
2900861	99	29	25,3	cyclictest	3073821	-21	kworker/u8:0+flush-259:0	10:15:11	0
2900871	99	28	25,2	cyclictest	3063342	-21	kworker/u8:1+events_unbound	11:05:14	3
2900871	99	28	25,2	cyclictest	2942345	-21	kworker/u8:3+events_unbound	08:19:53	3
2900871	99	28	24,3	cyclictest	3215496	-21	kworker/u8:0+events_unbound	12:18:59	3
2900866	99	28	25,2	cyclictest	2916343	-21	kworker/u8:4+flush-259:0	07:44:34	2
2900861	99	28	25,2	cyclictest	3021209	-21	kworker/u8:5+flush-259:0	09:15:22	0
2900861	99	28	23,4	cyclictest	3073594	-21	apt-get	09:55:00	0
2900866	99	27	24,2	cyclictest	3173053	-21	kworker/u8:1+events_unbound	12:00:12	2
2900866	99	27	22,4	cyclictest	3224679	-21	ntpq	12:15:20	2
2900863	99	27	22,4	cyclictest	2957899	-21	kworker/u8:1+events_unbound	08:10:00	1
2900863	99	27	20,5	cyclictest	3231398	-21	cp	12:25:01	1
2900871	99	26	24,2	cyclictest	2993745	-21	kworker/u8:0+events_unbound	09:05:58	3
2900871	99	26	23,2	cyclictest	3063342	-21	kworker/u8:1+flush-259:0	10:50:16	3
2900871	99	26	23,2	cyclictest	3063342	-21	kworker/u8:1+flush-259:0	10:45:11	3
2900871	99	26	23,2	cyclictest	2900597	-21	kworker/u8:2+flush-259:0	08:00:00	3
2900871	99	26	19,5	cyclictest	335557	-21	systemd-journal	09:24:20	3
2900866	99	26	23,2	cyclictest	3173053	-21	kworker/u8:1+events_unbound	11:45:19	2
2900866	99	26	23,2	cyclictest	3021208	-21	kworker/u8:4+events_unbound	09:46:58	2
2900866	99	26	21,4	cyclictest	335557	-21	systemd-journal	10:08:57	2
2900863	99	26	22,3	cyclictest	3084581	-21	kworker/u8:3+flush-259:0	10:15:00	1
2900863	99	26	19,5	cyclictest	335557	-21	systemd-journal	08:46:56	1
2900861	99	26	23,2	cyclictest	2978515	-21	kworker/u8:4+events_unbound	08:39:59	0
2900871	99	25	22,2	cyclictest	2900597	-21	kworker/u8:2+events_unbound	07:34:27	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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