OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #3

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackcslot3s.osadl.org (updated Tue Nov 18, 2025 12:43:55)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
29794	2	333	311,5	sleep2	0	-21	swapper/2	07:09:15	2
29751	2	320	304,5	sleep1	0	-21	swapper/1	07:08:42	1
29839	2	317	303,5	sleep0	0	-21	swapper/0	07:09:51	0
29681	2	313	306,5	sleep3	0	-21	swapper/3	07:07:48	3
30117	99	301	0,300	cyclictest	31265	-21	kworker/u16:1+efi_rts_wq	11:05:16	2
30115	99	300	0,299	cyclictest	4068	-21	kworker/u16:0+efi_rts_wq	07:25:14	0
30115	99	298	0,297	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:45:15	0
30117	99	297	0,295	cyclictest	28226	-21	kworker/u16:1+efi_rts_wq	12:00:15	2
30116	99	297	0,296	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	12:25:13	1
30117	99	296	0,293	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	12:30:18	2
30116	99	296	0,295	cyclictest	19071	-21	kworker/u16:0+efi_rts_wq	08:00:14	1
30115	99	296	0,295	cyclictest	4068	-21	kworker/u16:0+efi_rts_wq	07:40:11	0
30115	99	293	0,292	cyclictest	19071	-21	kworker/u16:0+efi_rts_wq	08:17:09	0
30118	99	292	0,290	cyclictest	32457	-21	kworker/u16:2+efi_rts_wq	11:10:13	3
30117	99	292	0,290	cyclictest	32457	-21	kworker/u16:2+efi_rts_wq	11:00:15	2
30115	99	292	0,291	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	11:50:14	0
30118	99	291	0,290	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	12:35:17	3
30116	99	291	0,290	cyclictest	32457	-21	kworker/u16:2+efi_rts_wq	10:25:13	1
30116	99	291	0,290	cyclictest	1405	-21	kworker/u16:4+efi_rts_wq	11:07:38	1
30117	99	290	0,287	cyclictest	28226	-21	kworker/u16:1+efi_rts_wq	12:10:15	2
30115	99	290	0,289	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	09:00:15	0
30117	99	289	0,288	cyclictest	13729	-21	kworker/u16:1+efi_rts_wq	09:45:14	2
30116	99	289	0,288	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:10:15	1
30117	99	288	0,287	cyclictest	19071	-21	kworker/u16:0+efi_rts_wq	08:40:15	2
30116	99	288	0,287	cyclictest	32457	-21	kworker/u16:2+efi_rts_wq	09:52:25	1
30116	99	288	0,287	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:45:14	1
30118	99	287	0,286	cyclictest	32457	-21	kworker/u16:2+efi_rts_wq	10:47:34	3
30117	99	286	0,285	cyclictest	1405	-21	kworker/u16:4+efi_rts_wq	11:12:40	2
30115	99	286	0,285	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	11:45:16	0
30118	99	284	0,283	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:30:13	3
30117	99	284	0,283	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:50:15	2
30117	99	284	0,283	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:20:12	2
30118	99	283	0,282	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:35:14	3
30117	99	283	0,282	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:30:14	2
30117	99	283	0,282	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	09:20:14	2
30115	99	283	0,282	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	09:55:13	0
30115	99	282	0,281	cyclictest	31265	-21	kworker/u16:1+efi_rts_wq	11:05:17	0
30116	99	280	0,279	cyclictest	28226	-21	kworker/u16:1+efi_rts_wq	12:20:14	1
30118	99	278	0,277	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:10:15	3
30115	99	276	0,275	cyclictest	19071	-21	kworker/u16:0+efi_rts_wq	08:27:10	0
30118	99	274	0,273	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	12:15:15	3
30116	99	274	0,273	cyclictest	13729	-21	kworker/u16:1+efi_rts_wq	09:17:19	1
30115	99	274	0,273	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:30:14	0
30117	99	273	0,272	cyclictest	20896	-21	kworker/u16:2+efi_rts_wq	07:15:01	2
30116	99	273	0,272	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:32:12	1
30118	99	272	0,271	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	09:15:15	3
30118	99	272	0,271	cyclictest	16921	-21	kworker/u16:3+efi_rts_wq	11:40:15	3
30117	99	272	0,271	cyclictest	19071	-21	kworker/u16:0+efi_rts_wq	08:00:14	2
30117	99	270	0,268	cyclictest	9296	-21	kworker/u16:0+efi_rts_wq	11:35:13	2
30115	99	270	0,269	cyclictest	5566	-21	kworker/u16:2+efi_rts_wq	08:55:15	0
30118	99	266	0,263	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:05:14	3
30116	99	266	0,265	cyclictest	4068	-21	kworker/u16:0+efi_rts_wq	07:21:58	1
30117	99	264	0,263	cyclictest	20896	-21	kworker/u16:2+efi_rts_wq	07:10:17	2
30116	99	264	0,263	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	07:30:12	1
30115	99	263	0,262	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	12:37:56	0
30115	99	263	0,262	cyclictest	19071	-21	kworker/u16:0+efi_rts_wq	08:35:14	0
30117	99	262	0,261	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:25:15	2
30116	99	259	0,257	cyclictest	11882	-21	kworker/u16:1+efi_rts_wq	11:25:15	1
30115	99	259	0,258	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	09:05:14	0
30116	99	257	0,256	cyclictest	13729	-21	kworker/u16:1+efi_rts_wq	09:40:15	1
30116	99	255	0,254	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:30:15	1
30116	99	253	0,252	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:20:14	1
30115	99	253	0,252	cyclictest	25921	-21	kworker/u16:3+efi_rts_wq	11:55:14	0
30116	99	252	0,251	cyclictest	4068	-21	kworker/u16:0+efi_rts_wq	07:16:57	1
30116	99	252	0,251	cyclictest	27276	-21	kworker/u16:3+efi_rts_wq	10:50:14	1
30117	99	248	0,247	cyclictest	23637	-21	kworker/u16:0+efi_rts_wq	11:52:46	2
30116	99	248	0,247	cyclictest	32457	-21	kworker/u16:2+efi_rts_wq	10:00:15	1
30117	99	247	0,246	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	09:00:15	2
30118	99	246	0,245	cyclictest	13729	-21	kworker/u16:1+efi_rts_wq	09:40:15	3
30115	99	246	0,245	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:40:16	0
30116	99	244	0,243	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:10:15	1
30116	99	243	0,242	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:57:16	1
30118	99	242	0,241	cyclictest	9296	-21	kworker/u16:0+efi_rts_wq	11:30:12	3
30116	99	242	0,241	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	12:17:51	1
30115	99	240	0,238	cyclictest	13729	-21	kworker/u16:1+efi_rts_wq	09:45:14	0
30117	99	239	0,238	cyclictest	9296	-21	kworker/u16:0+efi_rts_wq	11:30:12	2
30117	99	239	0,238	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	07:50:11	2
30117	99	239	0,238	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:40:18	2
30117	99	237	0,236	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	12:05:15	2
30116	99	236	0,235	cyclictest	5566	-21	kworker/u16:2+efi_rts_wq	09:10:14	1
30118	99	234	0,233	cyclictest	5566	-21	kworker/u16:2+efi_rts_wq	08:47:14	3
30117	99	234	0,233	cyclictest	9296	-21	kworker/u16:0+efi_rts_wq	11:20:15	2
30115	99	234	0,233	cyclictest	32457	-21	kworker/u16:2+efi_rts_wq	11:00:14	0
30117	99	233	0,232	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	07:55:12	2
30118	99	232	0,231	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:52:15	3
30115	99	232	0,231	cyclictest	9296	-21	kworker/u16:0+efi_rts_wq	11:20:14	0
30116	99	231	0,230	cyclictest	31265	-21	kworker/u16:1+efi_rts_wq	11:15:13	1
30116	99	231	0,229	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	09:35:17	1
30115	99	231	0,230	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	08:10:15	0
30118	99	229	0,228	cyclictest	32457	-21	kworker/u16:2+efi_rts_wq	11:15:13	3
30116	99	229	0,228	cyclictest	32457	-21	kworker/u16:2+efi_rts_wq	10:15:14	1
30115	99	226	0,225	cyclictest	4289	-21	kworker/u16:3+efi_rts_wq	07:50:12	0
30118	99	225	0,223	cyclictest	9296	-21	kworker/u16:0+efi_rts_wq	11:35:13	3
30116	99	224	0,223	cyclictest	4068	-21	kworker/u16:0+efi_rts_wq	07:11:57	1
30115	99	223	0,222	cyclictest	13729	-21	kworker/u16:1+efi_rts_wq	09:30:15	0
30117	99	222	0,221	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:45:14	2
30117	99	222	0,221	cyclictest	13729	-21	kworker/u16:1+efi_rts_wq	09:37:21	2
30115	99	221	0,220	cyclictest	5566	-21	kworker/u16:2+efi_rts_wq	09:10:14	0
30118	99	218	0,217	cyclictest	21325	-21	kworker/u16:2+efi_rts_wq	11:47:45	3
30115	99	218	0,216	cyclictest	17999	-21	kworker/u16:0+efi_rts_wq	10:35:14	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17