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 Sat Aug 15, 2026 00:43:54)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
988	2	319	305,5	sleep0	0	-21	swapper/0	19:06:00	0
1129	2	318	308,8	sleep1	0	-21	swapper/1	19:07:49	1
1021	2	317	309,5	sleep3	0	-21	swapper/3	19:06:27	3
921	2	316	303,10	sleep2	0	-21	swapper/2	19:05:21	2
1567	99	306	0,304	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	19:20:12	3
1564	99	304	0,302	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:25:12	0
1567	99	300	0,298	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:20:12	3
1567	99	299	0,298	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	22:05:12	3
1567	99	299	0,298	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	22:05:11	3
1566	99	299	0,298	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	19:45:10	2
1567	99	298	0,297	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	19:15:01	3
1567	99	296	0,294	cyclictest	6757	-21	kworker/u16:0+efi_rts_wq	23:05:13	3
1567	99	295	0,294	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	21:40:12	3
1566	99	295	0,294	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	22:55:11	2
1564	99	295	0,294	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:00:14	0
1565	99	294	0,293	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	21:50:13	1
1564	99	294	0,293	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:44:50	0
1565	99	293	0,292	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	19:29:35	1
1565	99	293	0,291	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	19:45:09	1
1565	99	292	0,291	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:50:13	1
1566	99	291	0,290	cyclictest	18680	-21	kworker/u16:0+efi_rts_wq	23:40:22	2
1565	99	291	0,290	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	00:30:12	1
1565	99	291	0,290	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	20:15:12	1
1567	99	290	0,289	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:39:37	3
1565	99	288	0,287	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:55:09	1
1565	99	288	0,287	cyclictest	18680	-21	kworker/u16:0+efi_rts_wq	23:40:13	1
1565	99	288	0,287	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	22:00:14	1
1564	99	286	0,285	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	21:00:14	0
1564	99	286	0,285	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:15:14	0
1566	99	285	0,283	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:20:13	2
1567	99	284	0,283	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	21:30:10	3
1566	99	284	0,283	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:55:12	2
1566	99	284	0,283	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:35:13	2
1567	99	281	0,280	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	21:09:54	3
1567	99	281	0,280	cyclictest	11810	-21	kworker/u16:3+efi_rts_wq	23:30:11	3
1567	99	280	0,277	cyclictest	18680	-21	kworker/u16:0+efi_rts_wq	00:10:11	3
1565	99	279	0,278	cyclictest	18680	-21	kworker/u16:0+efi_rts_wq	00:10:11	1
1565	99	278	0,277	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	20:45:11	1
1567	99	277	0,276	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:54:39	3
1566	99	277	0,276	cyclictest	11810	-21	kworker/u16:3+efi_rts_wq	23:25:11	2
1564	99	275	0,273	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	21:40:01	0
1564	99	274	0,273	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	21:45:12	0
1565	99	273	0,272	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:15:10	1
1564	99	273	0,272	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	20:25:11	0
1564	99	273	0,271	cyclictest	18680	-21	kworker/u16:0+efi_rts_wq	23:35:20	0
1567	99	272	0,271	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	22:10:13	3
1566	99	272	0,271	cyclictest	28833	-21	kworker/u16:4+efi_rts_wq	22:45:10	2
1565	99	272	0,271	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	22:20:12	1
1565	99	271	0,269	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	22:35:13	1
1565	99	270	0,269	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	21:04:53	1
1565	99	269	0,268	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:35:11	1
1564	99	269	0,268	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	20:24:46	0
1566	99	267	0,266	cyclictest	11810	-21	kworker/u16:3+efi_rts_wq	23:30:20	2
1565	99	267	0,266	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	19:50:13	1
1565	99	267	0,266	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	21:55:13	1
1564	99	267	0,266	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	21:50:03	0
1566	99	266	0,265	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:35:14	2
1565	99	266	0,265	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	21:35:13	1
1567	99	265	0,264	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	21:35:13	3
1566	99	264	0,263	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	20:19:44	2
1565	99	263	0,262	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	00:20:13	1
1566	99	262	0,260	cyclictest	28833	-21	kworker/u16:4+efi_rts_wq	23:00:14	2
1565	99	261	0,260	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:05:13	1
1565	99	261	0,260	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:15:15	1
1567	99	260	0,258	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	22:20:11	3
1565	99	260	0,257	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	21:30:10	1
1567	99	259	0,258	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	00:21:10	3
1564	99	259	0,258	cyclictest	18680	-21	kworker/u16:0+efi_rts_wq	00:15:11	0
1565	99	258	0,255	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:20:13	1
1567	99	257	0,256	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	21:25:11	3
1567	99	257	0,256	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	21:10:13	3
1564	99	255	0,254	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	22:35:11	0
1566	99	252	0,251	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:35:12	2
1565	99	252	0,251	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	20:40:13	1
1567	99	250	0,249	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:10:16	3
1565	99	250	0,249	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:20:13	1
1566	99	247	0,246	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	00:20:13	2
1567	99	246	0,243	cyclictest	28833	-21	kworker/u16:4+efi_rts_wq	22:55:11	3
1566	99	246	0,245	cyclictest	28833	-21	kworker/u16:4+efi_rts_wq	22:50:13	2
1567	99	242	0,241	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	21:15:12	3
1565	99	242	0,241	cyclictest	18680	-21	kworker/u16:0+efi_rts_wq	00:15:11	1
1566	99	241	0,240	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:30:10	2
1565	99	241	0,240	cyclictest	28833	-21	kworker/u16:4+efi_rts_wq	22:50:13	1
1567	99	240	0,239	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:35:14	3
1564	99	240	0,239	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	20:59:51	0
1566	99	238	0,236	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:50:13	2
1566	99	237	0,236	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	00:25:13	2
1564	99	237	0,236	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:50:13	0
1566	99	236	0,235	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	21:05:12	2
1567	99	235	0,233	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	19:25:14	3
1565	99	235	0,234	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	22:40:12	1
1565	99	235	0,234	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	00:00:14	1
1564	99	235	0,234	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	22:00:14	0
1564	99	232	0,231	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:55:11	0
1564	99	229	0,228	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	21:25:12	0
1564	99	229	0,226	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	23:00:15	0
1565	99	228	0,227	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:24:34	1
1567	99	227	0,226	cyclictest	16064	-21	kworker/u16:0+efi_rts_wq	19:10:16	3
1565	99	227	0,226	cyclictest	28693	-21	kworker/u16:1+efi_rts_wq	00:25:13	1
1566	99	226	0,225	cyclictest	29404	-21	kworker/u16:3+efi_rts_wq	22:25:13	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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