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 Fri Apr 10, 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
3444	2	328	322,4	sleep3	0	-21	swapper/3	19:08:27	3
3535	2	325	310,5	sleep2	0	-21	swapper/2	19:09:39	2
3209	2	319	306,4	sleep1	0	-21	swapper/1	19:05:24	1
3834	99	315	0,314	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:30:27	3
3832	99	315	0,314	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	23:55:13	1
3223	2	315	307,5	sleep0	0	-21	swapper/0	19:05:35	0
3833	99	313	0,312	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:45:15	2
3834	99	312	0,311	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:30:15	3
3834	99	308	0,307	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	19:35:14	3
3831	99	307	0,304	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	21:20:13	0
3832	99	305	0,304	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	20:05:10	1
3832	99	305	0,304	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	21:05:11	1
3832	99	305	0,304	cyclictest	21533	-21	kworker/u16:2+efi_rts_wq	23:10:34	1
3832	99	305	0,304	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	00:10:12	1
3831	99	305	0,303	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	23:55:12	0
3833	99	304	0,303	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	19:50:11	2
3831	99	304	0,303	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:10:14	0
3833	99	303	0,302	cyclictest	21533	-21	kworker/u16:2+efi_rts_wq	23:15:14	2
3834	99	302	0,301	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	20:40:12	3
3833	99	302	0,301	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	21:50:11	2
3832	99	302	0,301	cyclictest	21533	-21	kworker/u16:2+efi_rts_wq	23:15:15	1
3834	99	301	0,300	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	23:05:12	3
3834	99	301	0,300	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	21:25:13	3
3834	99	300	0,299	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	19:25:13	3
3832	99	300	0,299	cyclictest	21533	-21	kworker/u16:2+efi_rts_wq	23:20:12	1
3832	99	300	0,299	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	00:30:50	1
3831	99	299	0,298	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	00:35:10	0
3834	99	298	0,297	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	19:40:12	3
3832	99	298	0,295	cyclictest	21533	-21	kworker/u16:2+efi_rts_wq	23:25:14	1
3834	99	297	0,296	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	20:09:58	3
3833	99	297	0,296	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:35:13	2
3834	99	295	0,294	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:35:12	3
3834	99	295	0,294	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	00:00:44	3
3833	99	295	0,294	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:50:13	2
3831	99	295	0,294	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	00:00:12	0
3834	99	294	0,293	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	19:30:13	3
3834	99	294	0,293	cyclictest	21533	-21	kworker/u16:2+efi_rts_wq	23:20:12	3
3832	99	294	0,293	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:30:13	1
3831	99	294	0,293	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:25:25	0
3834	99	292	0,291	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	22:10:12	3
3834	99	292	0,291	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:25:15	3
3832	99	292	0,291	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:10:12	1
3831	99	291	0,290	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	23:00:12	0
3834	99	290	0,288	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:45:15	3
3831	99	288	0,287	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:35:28	0
3834	99	287	0,286	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:50:07	3
3832	99	287	0,286	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	19:20:12	1
3833	99	286	0,285	cyclictest	21533	-21	kworker/u16:2+efi_rts_wq	23:25:13	2
3834	99	285	0,284	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	23:30:11	3
3833	99	283	0,282	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:30:13	2
3833	99	283	0,282	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:25:01	2
3833	99	283	0,282	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	23:35:41	2
3831	99	283	0,282	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:35:16	0
3834	99	282	0,281	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:50:13	3
3831	99	281	0,280	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	20:40:11	0
3831	99	279	0,278	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:00:13	0
3832	99	278	0,277	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:00:13	1
3832	99	278	0,277	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	19:44:53	1
3833	99	277	0,276	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:20:13	2
3832	99	277	0,276	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	21:40:12	1
3833	99	276	0,275	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	00:20:14	2
3831	99	275	0,274	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	23:05:13	0
3831	99	275	0,274	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	19:10:12	0
3833	99	273	0,272	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	19:45:14	2
3832	99	273	0,272	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	19:29:50	1
3834	99	272	0,271	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:05:10	3
3832	99	272	0,271	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:30:14	1
3833	99	271	0,270	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	00:05:13	2
3833	99	269	0,268	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:55:15	2
3834	99	268	0,267	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:15:13	3
3831	99	268	0,267	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	00:25:13	0
3831	99	265	0,264	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:00:13	0
3834	99	263	0,262	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:35:14	3
3832	99	263	0,262	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	22:55:11	1
3834	99	261	0,260	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	00:30:12	3
3833	99	259	0,258	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	23:55:44	2
3831	99	259	0,258	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:55:14	0
3834	99	258	0,257	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	23:00:13	3
3833	99	258	0,257	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	20:20:00	2
3831	99	257	0,256	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	22:45:31	0
3831	99	255	0,254	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	22:20:13	0
3832	99	254	0,253	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	20:25:14	1
3832	99	254	0,253	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:45:13	1
3832	99	254	0,253	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	00:15:12	1
3832	99	250	0,247	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	20:50:12	1
3831	99	250	0,249	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	23:45:43	0
3832	99	248	0,247	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:45:14	1
3832	99	248	0,246	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:35:13	1
3834	99	246	0,245	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	21:20:13	3
3834	99	246	0,244	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	23:45:13	3
3834	99	245	0,244	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	00:05:46	3
3832	99	242	0,241	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	23:05:33	1
3832	99	242	0,241	cyclictest	5223	-21	kworker/u16:1+efi_rts_wq	19:55:13	1
3833	99	240	0,239	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:25:14	2
3833	99	235	0,234	cyclictest	2011	-21	kworker/u16:1+efi_rts_wq	00:35:10	2
3832	99	231	0,230	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	23:40:14	1
3832	99	230	0,229	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	21:50:18	1
3832	99	230	0,229	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	20:55:13	1
3834	99	229	0,228	cyclictest	21783	-21	kworker/u16:0+efi_rts_wq	22:00:13	3
3834	99	229	0,228	cyclictest	13310	-21	kworker/u16:3+efi_rts_wq	00:10:46	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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