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 Mon Dec 01, 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
3860250	99	42	38,3	cyclictest	4020849	-21	kworker/u8:2+flush-259:0	22:30:00	2
3860250	99	38	34,3	cyclictest	3959272	-21	kworker/u8:1+events_unbound	21:09:59	2
3860250	99	35	32,2	cyclictest	3896689	-21	kworker/u8:3+flush-259:0	20:00:00	2
3860250	99	35	32,2	cyclictest	3865053	-21	kworker/u8:1+flush-259:0	19:20:20	2
3860250	99	35	30,4	cyclictest	4020849	-21	kworker/u8:2+flush-259:0	22:40:00	2
3860250	99	34	30,3	cyclictest	4026642	-21	kworker/u8:3+flush-259:0	23:00:16	2
3860246	99	34	30,3	cyclictest	4020849	-21	kworker/u8:2+flush-259:0	22:30:18	1
3860246	99	33	26,5	cyclictest	4005354	-21	latency_hist	21:30:00	1
3860250	99	32	28,3	cyclictest	3959272	-21	kworker/u8:1+flush-259:0	21:00:16	2
3860250	99	31	28,2	cyclictest	3968222	-21	kworker/u8:2+events_unbound	21:15:00	2
3860250	99	31	28,2	cyclictest	3837257	-21	kworker/u8:0+flush-259:0	19:14:59	2
3860243	99	31	26,4	cyclictest	4020849	-21	kworker/u8:2+flush-259:0	22:20:00	0
3860253	99	30	26,3	cyclictest	4062570	-21	kworker/u8:0+flush-259:0	22:35:00	3
3860253	99	30	23,5	cyclictest	3969306	-21	latency_hist	20:55:01	3
3860250	99	30	27,2	cyclictest	4129477	-21	kworker/u8:4+flush-259:0	23:55:15	2
3860246	99	30	26,3	cyclictest	3870213	-21	kworker/u8:3+flush-259:0	19:34:59	1
3860250	99	29	25,3	cyclictest	3896689	-21	kworker/u8:3+flush-259:0	20:14:59	2
3860250	99	29	24,3	cyclictest	4026642	-21	kworker/u8:3+events_unbound	23:40:13	2
3860243	99	29	25,3	cyclictest	4192452	-21	kworker/u8:3+flush-259:0	00:35:29	0
3860243	99	29	25,3	cyclictest	3896769	-21	gpgv	19:45:00	0
3860250	99	28	25,2	cyclictest	4026642	-21	kworker/u8:3+events_unbound	22:15:19	2
3860250	99	28	24,3	cyclictest	3975050	-21	kworker/u8:0+events_unbound	21:40:00	2
3860250	99	27	24,2	cyclictest	4020849	-21	kworker/u8:2+flush-259:0	22:20:22	2
3860250	99	26	23,2	cyclictest	3912824	-21	kworker/u8:2+flush-259:0	20:20:16	2
3860250	99	26	22,3	cyclictest	3837257	-21	kworker/u8:0+events_unbound	19:45:00	2
3860246	99	26	22,2	cyclictest	3959272	-21	kworker/u8:1+flush-259:0	21:00:17	1
3860243	99	26	20,4	cyclictest	3865568	-21	/usr/sbin/munin	19:15:25	0
3860253	99	25	22,2	cyclictest	4004828	-21	kworker/u8:4+flush-259:0	21:40:15	3
3860253	99	25	21,3	cyclictest	4166197	-21	kworker/u8:3+flush-259:0	00:15:00	3
3860253	99	25	21,3	cyclictest	3896689	-21	kworker/u8:3+flush-259:0	19:50:16	3
3860253	99	25	20,3	cyclictest	3837257	-21	kworker/u8:0+events_unbound	19:45:16	3
3860253	99	25	19,4	cyclictest	2698871	-21	systemd-journal	23:05:24	3
3860250	99	25	23,1	cyclictest	3912824	-21	kworker/u8:2+events_unbound	20:35:25	2
3860250	99	25	22,2	cyclictest	4099101	-21	kworker/u8:0+events_unbound	23:35:18	2
3860250	99	25	22,2	cyclictest	3968222	-21	kworker/u8:2+events_unbound	21:25:17	2
3860250	99	25	18,2	cyclictest	3865053	-21	kworker/u8:1+events_unbound	19:35:15	2
3860243	99	25	21,3	cyclictest	3870213	-21	kworker/u8:3+flush-259:0	19:30:00	0
3860243	99	25	21,3	cyclictest	3870213	-21	kworker/u8:3+flush-259:0	19:29:59	0
3860253	99	24	19,4	cyclictest	4099101	-21	kworker/u8:0+events_unbound	23:05:00	3
3860250	99	24	21,2	cyclictest	4177186	-21	kworker/u8:2+flush-259:0	00:25:25	2
3860250	99	24	17,5	cyclictest	3886362	-21	latency_hist	19:35:00	2
3860246	99	24	18,4	cyclictest	4165964	-21	latency_hist	00:05:01	1
3860243	99	24	18,4	cyclictest	2698871	-21	systemd-journal	20:20:01	0
3860253	99	23	18,4	cyclictest	2698871	-21	systemd-journal	22:15:00	3
3860253	99	23	16,5	cyclictest	3880803	-21	latency_hist	19:30:01	3
3860253	99	23	16,5	cyclictest	3880803	-21	latency_hist	19:30:00	3
3860246	99	23	18,4	cyclictest	4129475	-21	kworker/u8:1+flush-259:0	00:10:13	1
3860243	99	23	16,5	cyclictest	4150125	-21	latency_hist	23:50:01	0
3860243	99	23	0,3	cyclictest	3928153	-21	awk	20:15:00	0
3860253	99	22	18,3	cyclictest	3881311	-21	cat	19:30:01	3
3860250	99	22	19,2	cyclictest	4099101	-21	kworker/u8:0+events_unbound	23:30:22	2
3860250	99	22	19,2	cyclictest	3975050	-21	kworker/u8:0+events_unbound	21:45:00	2
3860250	99	22	18,3	cyclictest	4026642	-21	kworker/u8:3+events_unbound	23:11:25	2
3860246	99	22	18,3	cyclictest	4114001	-21	idleruntime-cro	23:15:00	1
3860246	99	22	18,2	cyclictest	4026642	-21	kworker/u8:3+flush-259:0	22:25:18	1
3860243	99	22	20,1	cyclictest	3875640	-21	kworker/u8:4+events_unbound	19:55:21	0
3860243	99	22	18,3	cyclictest	4177219	-21	apt-get	00:20:11	0
3860243	99	22	16,4	cyclictest	3974676	-21	/usr/sbin/munin	21:00:15	0
3860243	99	22	16,4	cyclictest	2698871	-21	systemd-journal	22:50:00	0
3860243	99	22	16,4	cyclictest	2698871	-21	systemd-journal	22:10:00	0
3860253	99	21	15,4	cyclictest	3865053	-21	kworker/u8:1+flush-259:0	19:45:00	3
3860250	99	21	18,2	cyclictest	3875640	-21	kworker/u8:4+flush-259:0	19:25:21	2
3860250	99	21	18,2	cyclictest	3875640	-21	kworker/u8:4+flush-259:0	19:25:21	2
3860250	99	21	17,3	cyclictest	4129477	-21	kworker/u8:4+flush-259:0	00:15:16	2
3860250	99	21	17,3	cyclictest	4129477	-21	kworker/u8:4+flush-259:0	00:15:15	2
3860250	99	21	17,3	cyclictest	4129475	-21	kworker/u8:1+events_unbound	00:13:49	2
3860250	99	21	17,2	cyclictest	0	-21	swapper/2	23:25:00	2
3860246	99	21	15,4	cyclictest	4187515	-21	/usr/sbin/munin	00:30:16	1
3860246	99	21	15,4	cyclictest	4118308	-21	ntpq	23:15:23	1
3860243	99	21	15,4	cyclictest	3958178	-21	ntpq	20:40:23	0
3860253	99	20	17,2	cyclictest	4036696	-21	cron	22:00:00	3
3860253	99	20	17,2	cyclictest	4026642	-21	kworker/u8:3+flush-259:0	22:55:25	3
3860253	99	20	17,2	cyclictest	4020849	-21	kworker/u8:2+events_unbound	23:20:24	3
3860253	99	20	17,2	cyclictest	3975050	-21	kworker/u8:0+events_unbound	21:05:26	3
3860253	99	20	14,4	cyclictest	4156091	-21	diskstats	23:55:14	3
3860250	99	20	16,3	cyclictest	3975050	-21	kworker/u8:0+events_unbound	21:34:23	2
3860250	99	20	16,3	cyclictest	3875640	-21	kworker/u8:4+events_unbound	20:55:17	2
3860246	99	20	18,1	cyclictest	0	-21	swapper/1	22:50:00	1
3860246	99	20	14,4	cyclictest	4015689	-21	latency_hist	21:40:00	1
3860253	99	19	15,3	cyclictest	4026642	-21	kworker/u8:3+events_unbound	22:50:25	3
3860253	99	19	15,3	cyclictest	3949040	-21	apt-get	20:35:14	3
3860250	99	19	16,3	cyclictest	3912824	-21	kworker/u8:2+flush-259:0	20:05:16	2
3860250	99	19	16,2	cyclictest	4052227	-21	sh	22:15:00	2
3860250	99	19	16,2	cyclictest	4026642	-21	kworker/u8:3+events_unbound	21:50:21	2
3860250	99	19	16,2	cyclictest	4020849	-21	kworker/u8:2+flush-259:0	21:55:22	2
3860250	99	19	15,3	cyclictest	4088490	-21	apt-get	22:50:14	2
3860250	99	19	13,4	cyclictest	3896650	-21	latency_hist	19:45:01	2
3860250	99	19	11,6	cyclictest	2698871	-21	systemd-journal	22:45:01	2
3860243	99	19	14,4	cyclictest	4031816	-21	/usr/sbin/munin	21:55:18	0
3860243	99	19	14,3	cyclictest	492	-21	dbus-daemon	23:05:00	0
3860253	99	18	16,1	cyclictest	0	-21	swapper/3	22:05:00	3
3860253	99	18	14,3	cyclictest	3875640	-21	kworker/u8:4+flush-259:0	19:40:00	3
3860250	99	18	15,2	cyclictest	4176698	-21	kworker/u8:0+events_unbound	00:35:24	2
3860250	99	18	15,2	cyclictest	4099101	-21	kworker/u8:0+events_unbound	23:50:00	2
3860250	99	18	14,3	cyclictest	4099101	-21	kworker/u8:0+events_unbound	23:50:14	2
3860246	99	18	14,3	cyclictest	3912824	-21	kworker/u8:2+flush-259:0	20:05:27	1
3860246	99	18	13,4	cyclictest	3928410	-21	apt-get	20:15:13	1
3860246	99	18	13,4	cyclictest	2698871	-21	systemd-journal	23:23:00	1
3860253	99	17	14,2	cyclictest	3923638	-21	irqcore	20:10:19	3
3860253	99	17	14,2	cyclictest	3912573	-21	cron	20:00:00	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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