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 Apr 03, 2025 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3886562	99	50	45,3	cyclictest	4095940	-21	kworker/u8:4+flush-259:0	23:20:00	0
3886564	99	45	41,3	cyclictest	3939429	-21	kworker/u8:0+flush-259:0	20:00:00	1
3886569	99	44	37,5	cyclictest	3000860	-21	systemd-journal	22:25:00	2
3886574	99	41	38,2	cyclictest	4111531	-21	kworker/u8:1+events_unbound	23:30:34	3
3886574	99	41	38,2	cyclictest	4095940	-21	kworker/u8:4+events_unbound	23:40:16	3
3886564	99	41	36,3	cyclictest	4095940	-21	kworker/u8:4+flush-259:0	23:10:11	1
3886574	99	40	34,4	cyclictest	4112149	-21	latency_hist	23:10:00	3
3886564	99	40	35,3	cyclictest	4024188	-21	/usr/sbin/munin	21:20:18	1
3886574	99	39	36,2	cyclictest	4150535	-21	kworker/u8:3+flush-259:0	23:55:16	3
3886574	99	38	35,2	cyclictest	4079329	-21	kworker/u8:0+flush-259:0	22:30:12	3
3886574	99	38	35,2	cyclictest	4040277	-21	kworker/u8:1+flush-259:0	22:40:16	3
3886564	99	38	34,2	cyclictest	3859426	-21	kworker/u8:3+events_unbound	20:15:00	1
3886569	99	37	27,5	cyclictest	4095919	-21	latency_hist	22:50:01	2
3886574	99	35	32,2	cyclictest	4111531	-21	kworker/u8:1+events_unbound	00:30:20	3
3886574	99	35	32,2	cyclictest	3950846	-21	kworker/u8:1+flush-259:0	20:15:26	3
3886574	99	33	30,2	cyclictest	4051653	-21	kworker/u8:3+events_unbound	23:00:19	3
3886574	99	33	30,2	cyclictest	3859426	-21	kworker/u8:3+events_unbound	20:50:20	3
3886574	99	33	26,3	cyclictest	4095940	-21	kworker/u8:4+events_unbound	23:20:22	3
3886562	99	33	26,5	cyclictest	4128780	-21	latency_hist	23:30:00	0
3886574	99	32	30,2	cyclictest	4150535	-21	kworker/u8:3+flush-259:0	00:10:16	3
3886574	99	32	30,2	cyclictest	3875725	-21	kworker/u8:0+flush-259:0	19:35:16	3
3886574	99	32	29,2	cyclictest	4112806	-21	kworker/u8:2+events_unbound	23:10:20	3
3886574	99	32	29,2	cyclictest	3912922	-21	kworker/u8:1+events_unbound	19:45:22	3
3886574	99	32	29,2	cyclictest	3859426	-21	kworker/u8:3+events_unbound	19:10:25	3
3886564	99	32	25,5	cyclictest	3929534	-21	base64	19:50:02	1
3886562	99	32	27,4	cyclictest	4095940	-21	kworker/u8:4+flush-259:0	23:14:59	0
3886574	99	31	28,2	cyclictest	4172013	-21	kworker/u8:4+events_unbound	00:35:24	3
3886574	99	31	28,2	cyclictest	3966260	-21	kworker/u8:0+events_unbound	20:40:16	3
3886564	99	31	27,3	cyclictest	4095940	-21	kworker/u8:4+flush-259:0	23:40:18	1
3886564	99	31	25,4	cyclictest	4122948	-21	latency_hist	23:20:00	1
3886574	99	30	27,2	cyclictest	4111531	-21	kworker/u8:1+flush-259:0	23:50:11	3
3886574	99	30	27,2	cyclictest	3859426	-21	kworker/u8:3+events_unbound	19:40:14	3
3886574	99	30	26,3	cyclictest	3997760	-21	apt-get	20:55:12	3
3886564	99	30	27,2	cyclictest	3950846	-21	kworker/u8:1+flush-259:0	20:15:16	1
3886574	99	29	26,3	cyclictest	4029769	-21	kworker/u8:3+flush-259:0	21:30:15	3
3886574	99	29	26,2	cyclictest	4095940	-21	kworker/u8:4+events_unbound	23:15:14	3
3886574	99	29	26,2	cyclictest	3912922	-21	kworker/u8:1+flush-259:0	19:50:25	3
3886574	99	29	26,2	cyclictest	3902920	-21	kworker/u8:2+events_unbound	19:25:18	3
3886574	99	29	23,5	cyclictest	3971458	-21	latency_hist	20:30:00	3
3886569	99	29	26,2	cyclictest	4150535	-21	kworker/u8:3+flush-259:0	00:10:10	2
3886564	99	29	26,2	cyclictest	3976897	-21	kworker/u8:2+flush-259:0	20:35:15	1
3886564	99	29	26,2	cyclictest	3859426	-21	kworker/u8:3+flush-259:0	19:40:25	1
3886564	99	29	25,3	cyclictest	3929575	-21	kworker/u8:4+flush-259:0	20:05:16	1
3886564	99	29	22,5	cyclictest	4159909	-21	ntpq	00:00:23	1
3886562	99	29	24,3	cyclictest	4057509	-21	/usr/sbin/munin	22:00:20	0
3886574	99	28	26,2	cyclictest	3966260	-21	kworker/u8:0+flush-259:0	20:35:26	3
3886574	99	28	25,2	cyclictest	4095940	-21	kworker/u8:4+flush-259:0	00:00:25	3
3886569	99	28	25,2	cyclictest	3902920	-21	kworker/u8:2+flush-259:0	19:25:17	2
3886564	99	28	25,2	cyclictest	3875725	-21	kworker/u8:0+flush-259:0	19:30:26	1
3886562	99	28	24,3	cyclictest	4145379	-21	apt-get	23:50:07	0
3886574	99	27	25,2	cyclictest	3950846	-21	kworker/u8:1+events_unbound	20:20:15	3
3886574	99	27	24,2	cyclictest	4172013	-21	kworker/u8:4+events_unbound	00:20:15	3
3886574	99	27	24,2	cyclictest	4029769	-21	kworker/u8:3+events_unbound	21:35:14	3
3886569	99	27	24,2	cyclictest	4051653	-21	kworker/u8:3+flush-259:0	23:00:28	2
3886569	99	27	23,3	cyclictest	4150176	-21	kworker/u8:2+events_unbound	00:00:25	2
3886564	99	27	21,4	cyclictest	3897666	-21	latency_hist	19:20:01	1
3886574	99	26	24,2	cyclictest	4051653	-21	kworker/u8:3+flush-259:0	22:35:24	3
3886574	99	26	23,3	cyclictest	4008753	-21	kworker/u8:3+events_unbound	21:10:19	3
3886574	99	26	23,2	cyclictest	4051653	-21	kworker/u8:3+flush-259:0	22:15:16	3
3886574	99	26	23,2	cyclictest	4040277	-21	kworker/u8:1+events_unbound	22:10:16	3
3886574	99	26	23,2	cyclictest	3875725	-21	kworker/u8:0+events_unbound	19:20:28	3
3886574	99	26	22,3	cyclictest	4051653	-21	kworker/u8:3+flush-259:0	22:50:14	3
3886569	99	26	23,2	cyclictest	4095940	-21	kworker/u8:4+events_unbound	23:20:25	2
3886569	99	26	21,4	cyclictest	4029270	-21	cat	21:25:01	2
3886569	99	26	21,3	cyclictest	4182878	-21	latency_hist	00:35:01	2
3886569	99	26	19,5	cyclictest	4144483	-21	latency_hist	23:45:01	2
3886564	99	26	23,2	cyclictest	4079329	-21	kworker/u8:0+flush-259:0	22:35:16	1
3886564	99	26	22,3	cyclictest	3966260	-21	kworker/u8:0+flush-259:0	20:30:26	1
3886562	99	26	21,4	cyclictest	4177906	-21	apt-get	00:30:08	0
3886574	99	25	22,2	cyclictest	4150535	-21	kworker/u8:3+events_unbound	00:15:18	3
3886574	99	25	22,2	cyclictest	4095940	-21	kworker/u8:4+events_unbound	23:35:13	3
3886574	99	25	19,5	cyclictest	3000860	-21	systemd-journal	19:20:01	3
3886569	99	25	22,2	cyclictest	3859426	-21	kworker/u8:3+flush-259:0	20:50:25	2
3886569	99	25	19,4	cyclictest	3944979	-21	latency_hist	20:05:01	2
3886562	99	25	21,3	cyclictest	3966260	-21	kworker/u8:0+events_unbound	20:55:16	0
3886574	99	24	21,2	cyclictest	4051653	-21	kworker/u8:3+events_unbound	22:55:13	3
3886574	99	24	21,2	cyclictest	3966260	-21	kworker/u8:0+events_unbound	20:30:17	3
3886569	99	24	21,2	cyclictest	4172013	-21	kworker/u8:4+events_unbound	00:35:26	2
3886569	99	24	21,2	cyclictest	4040277	-21	kworker/u8:1+flush-259:0	21:40:21	2
3886569	99	24	21,2	cyclictest	3000860	-21	systemd-journal	21:49:30	2
3886569	99	24	20,3	cyclictest	3000063	-21	rs:main		2
3886564	99	24	21,2	cyclictest	4040277	-21	kworker/u8:1+flush-259:0	22:00:00	1
3886564	99	24	21,2	cyclictest	3859426	-21	kworker/u8:3+flush-259:0	19:10:16	1
3886564	99	24	20,3	cyclictest	4095940	-21	kworker/u8:4+flush-259:0	23:00:00	1
3886564	99	24	20,3	cyclictest	4051659	-21	gpgv	21:55:01	1
3886564	99	24	20,3	cyclictest	3966260	-21	kworker/u8:0+events_unbound	20:25:17	1
3886564	99	24	16,7	cyclictest	4051653	-21	kworker/u8:3+flush-259:0	22:10:00	1
3886562	99	24	19,3	cyclictest	3945007	-21	gpgv	20:05:00	0
3886562	99	24	17,5	cyclictest	4084494	-21	latency_hist	22:35:00	0
3886569	99	23	20,2	cyclictest	3875725	-21	kworker/u8:0+flush-259:0	19:35:15	2
3886569	99	23	20,2	cyclictest	3859426	-21	kworker/u8:3+events_unbound	19:55:16	2
3886564	99	23	19,2	cyclictest	4018963	-21	kworker/u8:0+flush-259:0	21:40:21	1
3886564	99	23	18,4	cyclictest	4008323	-21	latency_hist	21:05:00	1
3886564	99	23	18,4	cyclictest	4008323	-21	latency_hist	21:05:00	1
3886562	99	23	19,2	cyclictest	3929575	-21	kworker/u8:4+flush-259:0	19:50:20	0
3886562	99	23	18,4	cyclictest	4051653	-21	kworker/u8:3+flush-259:0	22:50:12	0
3886574	99	22	19,2	cyclictest	4051653	-21	kworker/u8:3+events_unbound	22:20:20	3
3886574	99	22	19,2	cyclictest	4040277	-21	kworker/u8:1+flush-259:0	21:40:27	3
3886569	99	22	19,2	cyclictest	4002759	-21	kworker/u8:2+flush-259:0	21:50:20	2
3886569	99	22	18,3	cyclictest	4002759	-21	kworker/u8:2+flush-259:0	21:15:30	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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