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 Jul 20, 2026 00:43:55)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
12546	2	325	319,4	sleep3	0	-21	swapper/3	19:06:26	3
12550	2	320	306,5	sleep2	0	-21	swapper/2	19:06:29	2
12465	2	318	310,5	sleep1	0	-21	swapper/1	19:05:23	1
12533	2	314	307,4	sleep0	0	-21	swapper/0	19:06:15	0
13090	99	300	0,297	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:15:14	3
13088	99	299	0,298	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	22:35:12	1
13087	99	297	0,296	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	22:10:39	0
13088	99	296	0,295	cyclictest	7352	-21	kworker/u16:0+efi_rts_wq	00:30:14	1
13090	99	295	0,294	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:55:13	3
13088	99	295	0,294	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	20:50:13	1
13087	99	295	0,294	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	22:00:11	0
13090	99	294	0,293	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	00:35:11	3
13089	99	294	0,293	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	00:25:11	2
13089	99	294	0,293	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	00:25:11	2
13089	99	294	0,293	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:50:13	2
13088	99	294	0,293	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:00:12	1
13089	99	293	0,292	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:00:11	2
13088	99	293	0,292	cyclictest	7352	-21	kworker/u16:0+efi_rts_wq	00:20:12	1
13088	99	293	0,292	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:40:12	1
13090	99	292	0,291	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:55:14	3
13089	99	291	0,290	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	21:20:21	2
13088	99	291	0,290	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	19:20:14	1
13090	99	290	0,289	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	20:05:18	3
13089	99	290	0,289	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:15:13	2
13088	99	290	0,289	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:45:11	1
13087	99	289	0,288	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	19:10:14	0
13089	99	288	0,287	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	20:40:12	2
13087	99	288	0,287	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:51:13	0
13087	99	288	0,287	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	22:35:43	0
13087	99	288	0,287	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	00:05:19	0
13090	99	287	0,286	cyclictest	7352	-21	kworker/u16:0+efi_rts_wq	23:55:12	3
13089	99	287	0,286	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	21:05:13	2
13088	99	287	0,286	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:35:21	1
13088	99	287	0,286	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	23:50:12	1
13088	99	286	0,285	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	22:25:40	1
13088	99	286	0,285	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:00:15	1
13088	99	286	0,285	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	19:10:04	1
13090	99	284	0,283	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	23:15:12	3
13089	99	284	0,283	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	21:25:12	2
13090	99	283	0,282	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:45:11	3
13088	99	283	0,281	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:10:13	1
13088	99	282	0,281	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	20:20:13	1
13087	99	281	0,280	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	19:30:14	0
13089	99	280	0,279	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	22:05:15	2
13088	99	280	0,279	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:25:12	1
13088	99	280	0,279	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	19:30:08	1
13090	99	279	0,278	cyclictest	7352	-21	kworker/u16:0+efi_rts_wq	00:15:13	3
13089	99	279	0,278	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	00:35:11	2
13089	99	279	0,277	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	23:00:14	2
13087	99	279	0,278	cyclictest	7352	-21	kworker/u16:0+efi_rts_wq	00:01:15	0
13090	99	278	0,277	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	00:05:19	3
13089	99	278	0,277	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:45:13	2
13088	99	277	0,276	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:30:13	1
13087	99	277	0,275	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	22:55:13	0
13088	99	273	0,272	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:15:12	1
13090	99	272	0,271	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	19:20:06	3
13089	99	272	0,271	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	19:40:14	2
13088	99	272	0,271	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:40:13	1
13088	99	272	0,271	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	21:35:14	1
13090	99	271	0,270	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	22:20:13	3
13088	99	271	0,270	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	22:45:44	1
13090	99	269	0,268	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	20:40:22	3
13089	99	268	0,265	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:30:14	2
13089	99	267	0,266	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	19:15:14	2
13088	99	267	0,266	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	19:50:12	1
13090	99	263	0,262	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	22:50:13	3
13090	99	262	0,261	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	19:50:13	3
13089	99	262	0,261	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:30:13	2
13089	99	261	0,260	cyclictest	7352	-21	kworker/u16:0+efi_rts_wq	00:00:14	2
13088	99	258	0,257	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	22:30:14	1
13087	99	258	0,257	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:35:12	0
13089	99	257	0,256	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	19:35:14	2
13090	99	256	0,255	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	20:10:17	3
13089	99	254	0,253	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	22:45:13	2
13088	99	254	0,253	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	00:26:20	1
13088	99	254	0,253	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	00:26:20	1
13088	99	252	0,250	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	23:25:14	1
13087	99	251	0,250	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	19:45:10	0
13087	99	251	0,250	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	20:20:12	0
13089	99	249	0,248	cyclictest	7352	-21	kworker/u16:0+efi_rts_wq	00:31:21	2
13088	99	248	0,246	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:05:13	1
13087	99	246	0,244	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:30:13	0
13087	99	245	0,244	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:05:13	0
13087	99	245	0,244	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:00:15	0
13090	99	243	0,242	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	22:40:12	3
13089	99	242	0,239	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	19:25:13	2
13090	99	241	0,240	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:40:13	3
13090	99	241	0,240	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	21:45:12	3
13089	99	237	0,236	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	21:35:32	2
13087	99	236	0,235	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	21:25:12	0
13088	99	234	0,233	cyclictest	6538	-21	kworker/u16:3+efi_rts_wq	23:00:14	1
13090	99	233	0,232	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	19:25:13	3
13089	99	233	0,231	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	19:55:15	2
13087	99	233	0,231	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	22:30:14	0
13089	99	232	0,231	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:10:28	2
13088	99	232	0,231	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	21:45:12	1
13087	99	232	0,231	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:15:13	0
13090	99	230	0,229	cyclictest	16211	-21	kworker/u16:2+efi_rts_wq	21:00:15	3
13089	99	230	0,229	cyclictest	27339	-21	kworker/u16:0+efi_rts_wq	20:35:13	2
13087	99	229	0,228	cyclictest	21738	-21	kworker/u16:2+efi_rts_wq	00:36:23	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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