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 Tue Jul 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
3740900	99	59	55,3	cyclictest	3730854	-21	kworker/u8:1+events_unbound	19:22:03	3
3740900	99	44	41,2	cyclictest	3824425	-21	kworker/u8:3+events_unbound	20:30:18	3
3740900	99	43	40,2	cyclictest	3964209	-21	kworker/u8:1+events_unbound	23:15:22	3
3740900	99	40	37,2	cyclictest	3969580	-21	kworker/u8:2+events_unbound	23:10:22	3
3740900	99	40	37,2	cyclictest	3834550	-21	kworker/u8:0+flush-259:0	20:55:20	3
3740895	99	40	35,4	cyclictest	3882027	-21	kworker/u8:0+flush-259:0	21:35:26	2
3740900	99	39	35,3	cyclictest	3897541	-21	kworker/u8:4+events_unbound	22:30:19	3
3740900	99	38	32,2	cyclictest	3932995	-21	kworker/u8:0+events_unbound	22:15:00	3
3740900	99	38	31,2	cyclictest	3907857	-21	kworker/u8:3+events_unbound	21:55:18	3
3740900	99	37	34,2	cyclictest	3730854	-21	kworker/u8:1+flush-259:0	19:35:30	3
3740900	99	36	32,3	cyclictest	3932995	-21	kworker/u8:0+events_unbound	22:20:28	3
3740900	99	36	30,4	cyclictest	3746189	-21	/usr/sbin/munin	19:15:13	3
3740892	99	36	33,2	cyclictest	3782764	-21	kworker/u8:0+flush-259:0	20:05:16	1
3740900	99	35	32,2	cyclictest	3964209	-21	kworker/u8:1+flush-259:0	23:35:16	3
3740900	99	35	32,2	cyclictest	3834550	-21	kworker/u8:0+events_unbound	21:15:26	3
3740900	99	35	32,2	cyclictest	3824425	-21	kworker/u8:3+flush-259:0	20:50:22	3
3740900	99	35	32,2	cyclictest	3793220	-21	kworker/u8:5+events_unbound	20:20:25	3
3740900	99	35	32,2	cyclictest	3782764	-21	kworker/u8:0+flush-259:0	19:50:15	3
3740900	99	35	28,5	cyclictest	3902465	-21	latency_hist	21:45:01	3
3740900	99	34	31,2	cyclictest	3882027	-21	kworker/u8:0+events_unbound	21:30:24	3
3740900	99	34	31,2	cyclictest	3824425	-21	kworker/u8:3+events_unbound	20:45:17	3
3740900	99	34	30,3	cyclictest	3897541	-21	kworker/u8:4+events_unbound	22:40:18	3
3740900	99	34	27,3	cyclictest	4021126	-21	kworker/u8:2+events_unbound	23:55:15	3
3740892	99	34	29,3	cyclictest	4041637	-21	latency_hist	00:00:02	1
3740900	99	33	30,2	cyclictest	3994990	-21	kworker/u8:0+flush-259:0	23:40:24	3
3740900	99	33	30,2	cyclictest	3907857	-21	kworker/u8:3+flush-259:0	21:50:16	3
3740900	99	33	29,3	cyclictest	3984766	-21	kworker/u8:3+events_unbound	00:00:23	3
3740892	99	33	28,3	cyclictest	3995004	-21	latency_hist	23:15:00	1
3740900	99	32	29,2	cyclictest	4047520	-21	kworker/u8:0+events_unbound	00:15:22	3
3740900	99	32	29,2	cyclictest	3882027	-21	kworker/u8:0+flush-259:0	21:45:21	3
3740900	99	32	29,2	cyclictest	3730854	-21	kworker/u8:1+flush-259:0	19:40:22	3
3740895	99	32	28,3	cyclictest	3948997	-21	kworker/u8:2+flush-259:0	22:40:00	2
3740888	99	32	26,4	cyclictest	4004402	-21	ntpq	23:20:25	0
3740888	99	32	25,5	cyclictest	3989039	-21	ntpq	23:05:26	0
3740900	99	31	28,2	cyclictest	3897541	-21	kworker/u8:4+flush-259:0	22:35:23	3
3740900	99	31	28,2	cyclictest	1692155	-21	kworker/u8:3+flush-259:0	19:25:24	3
3740895	99	31	24,5	cyclictest	4073241	-21	latency_hist	00:35:00	2
3740900	99	30	27,2	cyclictest	4021126	-21	kworker/u8:2+events_unbound	23:50:19	3
3740900	99	30	27,2	cyclictest	3782764	-21	kworker/u8:0+flush-259:0	19:55:25	3
3740900	99	30	25,3	cyclictest	3860294	-21	latency_hist	21:05:01	3
3740900	99	30	22,6	cyclictest	3754036	-21	systemd-journal	23:35:00	3
3740892	99	30	24,5	cyclictest	3751094	-21	latency_hist	19:20:00	1
3740900	99	29	26,2	cyclictest	4057543	-21	kworker/u8:2+events_unbound	00:30:24	3
3740900	99	29	26,2	cyclictest	3994990	-21	kworker/u8:0+flush-259:0	23:45:17	3
3740900	99	29	26,2	cyclictest	3793220	-21	kworker/u8:5+events_unbound	20:05:14	3
3740895	99	29	27,1	cyclictest	3755980	-21	fwupd	19:22:04	2
3740895	99	29	26,2	cyclictest	3964209	-21	kworker/u8:1+flush-259:0	23:15:19	2
3740895	99	29	25,3	cyclictest	3994990	-21	kworker/u8:0+flush-259:0	23:40:00	2
3740900	99	28	25,2	cyclictest	4041664	-21	kworker/u8:1+events_unbound	00:35:16	3
3740900	99	28	24,3	cyclictest	3865136	-21	kworker/u8:3+events_unbound	21:10:23	3
3740900	99	28	23,3	cyclictest	3730854	-21	kworker/u8:1+events_unbound	19:30:02	3
3740895	99	28	25,2	cyclictest	4041664	-21	kworker/u8:1+flush-259:0	00:05:00	2
3740892	99	28	22,5	cyclictest	3854315	-21	ntpq	20:55:22	1
3740888	99	28	23,4	cyclictest	3824425	-21	kworker/u8:3+flush-259:0	20:30:20	0
3740888	99	28	0,26	cyclictest	3803593	-21	true	20:10:00	0
3740900	99	27	24,2	cyclictest	3969580	-21	kworker/u8:2+flush-259:0	22:50:15	3
3740900	99	27	24,2	cyclictest	3964209	-21	kworker/u8:1+events_unbound	23:05:29	3
3740900	99	27	24,2	cyclictest	3897541	-21	kworker/u8:4+events_unbound	22:15:26	3
3740900	99	27	23,3	cyclictest	3932995	-21	kworker/u8:0+events_unbound	22:49:48	3
3740900	99	27	21,4	cyclictest	3882223	-21	diskstats	21:25:15	3
3740895	99	27	20,5	cyclictest	3953908	-21	latency_hist	22:35:00	2
3740892	99	27	22,3	cyclictest	3756488	-21	/usr/sbin/munin	19:25:16	1
3740888	99	27	0,26	cyclictest	1	-21	systemd	19:31:44	0
3740900	99	26	23,2	cyclictest	3850219	-21	kworker/u8:2+flush-259:0	21:05:28	3
3740900	99	26	23,2	cyclictest	3824425	-21	kworker/u8:3+events_unbound	20:40:15	3
3740900	99	26	21,3	cyclictest	3881534	-21	base64	21:25:01	3
3740900	99	26	20,4	cyclictest	4005255	-21	latency_hist	23:25:01	3
3740892	99	26	22,3	cyclictest	3994990	-21	kworker/u8:0+flush-259:0	23:30:00	1
3740900	99	25	23,1	cyclictest	3964209	-21	kworker/u8:1+events_unbound	23:25:17	3
3740900	99	25	22,2	cyclictest	3730854	-21	kworker/u8:1+flush-259:0	20:10:22	3
3740900	99	25	21,3	cyclictest	3730854	-21	kworker/u8:1+flush-259:0	19:12:45	3
3740900	99	25	20,2	cyclictest	4041664	-21	kworker/u8:1+events_unbound	00:10:18	3
3740895	99	25	19,4	cyclictest	3969580	-21	kworker/u8:2+flush-259:0	22:50:19	2
3740895	99	25	18,4	cyclictest	3000063	-21	rs:main		2
3740895	99	25	17,5	cyclictest	4010407	-21	apt-get	23:30:01	2
3740892	99	25	20,4	cyclictest	3875601	-21	kworker/u8:2+flush-259:0	21:20:00	1
3740900	99	24	21,2	cyclictest	3808749	-21	kworker/u8:2+flush-259:0	20:15:23	3
3740900	99	24	20,3	cyclictest	3875601	-21	kworker/u8:2+flush-259:0	22:00:16	3
3740900	99	24	20,3	cyclictest	3875601	-21	kworker/u8:2+events_unbound	22:08:49	3
3740895	99	24	6,9	cyclictest	3886992	-21	munin-run	21:30:00	2
3740892	99	24	20,3	cyclictest	3755990	-21	kworker/u8:2+events_unbound	19:40:26	1
3740892	99	24	19,3	cyclictest	3754036	-21	systemd-journal	20:04:55	1
3740888	99	24	20,3	cyclictest	3984766	-21	kworker/u8:3+flush-259:0	00:25:17	0
3740900	99	23	20,2	cyclictest	3730854	-21	kworker/u8:1+events_unbound	19:45:12	3
3740900	99	23	19,3	cyclictest	3984766	-21	kworker/u8:3+events_unbound	00:20:15	3
3740895	99	23	19,3	cyclictest	3808749	-21	kworker/u8:2+events_unbound	20:15:23	2
3740895	99	23	18,4	cyclictest	3754036	-21	systemd-journal	23:30:48	2
3740895	99	23	15,5	cyclictest	3933776	-21	diskstats	22:15:17	2
3740892	99	23	19,3	cyclictest	4021126	-21	kworker/u8:2+flush-259:0	23:55:00	1
3740892	99	23	19,3	cyclictest	3865136	-21	kworker/u8:3+flush-259:0	21:10:18	1
3740888	99	23	17,4	cyclictest	3833685	-21	ntpq	20:35:23	0
3740888	99	23	17,4	cyclictest	3833685	-21	ntpq	20:35:22	0
3740888	99	23	17,4	cyclictest	3787177	-21	ntpq	19:50:22	0
3740888	99	23	17,4	cyclictest	3777955	-21	apt-get	19:45:12	0
3740888	99	23	16,5	cyclictest	4026263	-21	latency_hist	23:45:02	0
3740900	99	22	19,2	cyclictest	3882027	-21	kworker/u8:0+events_unbound	21:35:19	3
3740895	99	22	17,4	cyclictest	3907857	-21	kworker/u8:3+flush-259:0	22:00:26	2
3740895	99	22	17,3	cyclictest	3932995	-21	kworker/u8:0+flush-259:0	22:25:29	2
3740895	99	22	17,3	cyclictest	3865136	-21	kworker/u8:3+flush-259:0	21:15:00	2
3740895	99	22	17,3	cyclictest	1692155	-21	kworker/u8:3+flush-259:0	19:15:16	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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