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 Mon Aug 17, 2026 12:43:55)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
6697	2	319	312,5	sleep0	0	-21	swapper/0	07:05:44	0
7000	2	315	307,5	sleep1	0	-21	swapper/1	07:09:37	1
6782	2	315	307,5	sleep3	0	-21	swapper/3	07:06:50	3
6716	2	315	308,5	sleep2	0	-21	swapper/2	07:05:57	2
7297	99	301	0,300	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:45:14	0
7300	99	299	0,297	cyclictest	13682	-21	kworker/u16:1+efi_rts_wq	11:15:12	3
7297	99	299	0,298	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	08:07:37	0
7300	99	298	0,297	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	09:55:13	3
7298	99	298	0,297	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	09:05:12	1
7299	99	297	0,296	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	10:10:15	2
7298	99	296	0,295	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:15:13	1
7300	99	294	0,293	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:43:05	3
7300	99	293	0,292	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	07:40:13	3
7300	99	290	0,289	cyclictest	27490	-21	kworker/u16:2+efi_rts_wq	11:50:12	3
7300	99	288	0,287	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	11:20:11	3
7298	99	287	0,286	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	10:13:00	1
7300	99	286	0,285	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	08:22:40	3
7298	99	286	0,285	cyclictest	13682	-21	kworker/u16:1+efi_rts_wq	11:35:12	1
7297	99	285	0,283	cyclictest	27490	-21	kworker/u16:2+efi_rts_wq	11:50:13	0
7299	99	284	0,283	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	07:20:13	2
7299	99	284	0,283	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	07:50:14	2
7297	99	284	0,283	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	07:55:13	0
7300	99	283	0,282	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	08:45:15	3
7300	99	283	0,282	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	07:10:14	3
7298	99	283	0,282	cyclictest	2361	-21	kworker/u16:0+efi_rts_wq	12:08:20	1
7297	99	283	0,282	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	07:30:12	0
7300	99	282	0,281	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:35:12	3
7300	99	282	0,281	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	07:25:13	3
7299	99	282	0,281	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	11:10:13	2
7299	99	282	0,281	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	08:05:15	2
7300	99	281	0,280	cyclictest	2361	-21	kworker/u16:0+efi_rts_wq	12:15:13	3
7300	99	281	0,280	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:12:50	3
7300	99	281	0,280	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:12:49	3
7298	99	281	0,280	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	07:22:30	1
7298	99	280	0,279	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:50:10	1
7300	99	279	0,278	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	08:35:14	3
7297	99	279	0,278	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	07:15:14	0
7300	99	278	0,277	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:45:13	3
7300	99	277	0,276	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	12:38:26	3
7299	99	275	0,274	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:25:12	2
7299	99	275	0,274	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	08:50:13	2
7298	99	275	0,273	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	07:15:14	1
7300	99	274	0,273	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	08:10:12	3
7300	99	274	0,272	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	11:55:12	3
7300	99	272	0,270	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	07:45:13	3
7299	99	270	0,269	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	11:30:12	2
7300	99	269	0,268	cyclictest	2361	-21	kworker/u16:0+efi_rts_wq	12:33:24	3
7299	99	269	0,268	cyclictest	2361	-21	kworker/u16:0+efi_rts_wq	12:20:12	2
7297	99	269	0,268	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	11:45:13	0
7297	99	269	0,268	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	11:05:14	0
7298	99	268	0,267	cyclictest	2361	-21	kworker/u16:0+efi_rts_wq	12:30:12	1
7298	99	268	0,267	cyclictest	2361	-21	kworker/u16:0+efi_rts_wq	12:00:13	1
7297	99	268	0,267	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	08:15:13	0
7300	99	267	0,266	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	08:57:47	3
7300	99	267	0,266	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	08:02:36	3
7299	99	267	0,266	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	12:35:13	2
7298	99	267	0,266	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	12:10:12	1
7297	99	267	0,266	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	08:55:12	0
7299	99	262	0,261	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	10:00:14	2
7298	99	262	0,261	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	08:00:13	1
7297	99	261	0,259	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	10:55:13	0
7300	99	257	0,256	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	09:30:13	3
7298	99	257	0,256	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:00:12	1
7298	99	257	0,256	cyclictest	13682	-21	kworker/u16:1+efi_rts_wq	11:18:11	1
7298	99	256	0,255	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	08:27:42	1
7299	99	255	0,254	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:18:00	2
7300	99	254	0,253	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	12:13:20	3
7300	99	254	0,253	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	10:30:15	3
7299	99	253	0,252	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:05:13	2
7298	99	252	0,251	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	12:35:12	1
7300	99	250	0,249	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	11:48:17	3
7299	99	250	0,249	cyclictest	2361	-21	kworker/u16:0+efi_rts_wq	12:18:22	2
7298	99	249	0,248	cyclictest	2361	-21	kworker/u16:0+efi_rts_wq	11:58:17	1
7297	99	247	0,246	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	07:35:13	0
7297	99	246	0,245	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:35:14	0
7298	99	243	0,242	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	09:30:12	1
7297	99	241	0,240	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:02:47	0
7298	99	240	0,239	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	11:40:12	1
7300	99	239	0,238	cyclictest	13682	-21	kworker/u16:1+efi_rts_wq	11:35:13	3
7299	99	238	0,237	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	12:03:18	2
7297	99	238	0,237	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:08:00	0
7298	99	237	0,236	cyclictest	13682	-21	kworker/u16:1+efi_rts_wq	11:25:14	1
7300	99	235	0,234	cyclictest	2361	-21	kworker/u16:0+efi_rts_wq	12:00:13	3
7298	99	235	0,234	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	10:58:07	1
7297	99	235	0,234	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	08:25:14	0
7300	99	233	0,232	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:50:13	3
7299	99	227	0,226	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:10:15	2
7299	99	227	0,226	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:10:14	2
7299	99	227	0,225	cyclictest	3903	-21	kworker/u16:3+efi_rts_wq	10:53:05	2
7300	99	226	0,225	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:05:13	3
7300	99	226	0,225	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	10:23:01	3
7298	99	226	0,225	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	09:15:12	1
7300	99	225	0,224	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:50:11	3
7300	99	225	0,224	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:20:13	3
7298	99	225	0,223	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	10:35:13	1
7298	99	224	0,222	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	10:30:14	1
7299	99	223	0,222	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	08:47:46	2
7298	99	222	0,219	cyclictest	23178	-21	kworker/u16:0+efi_rts_wq	09:20:11	1
7297	99	219	0,218	cyclictest	13682	-21	kworker/u16:1+efi_rts_wq	11:25:14	0
7299	99	217	0,216	cyclictest	26238	-21	kworker/u16:1+efi_rts_wq	09:25:13	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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