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 Wed Apr 01, 2026 12:43:53)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2081	2	327	306,18	sleep2	0	-21	swapper/2	07:09:22	2
1792	2	324	309,5	sleep3	0	-21	swapper/3	07:05:43	3
1847	2	320	305,5	sleep1	0	-21	swapper/1	07:06:25	1
1968	2	317	309,5	sleep0	0	-21	swapper/0	07:07:55	0
2396	99	314	0,313	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	11:20:13	3
2395	99	314	0,313	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	07:50:13	2
2394	99	313	0,312	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:25:14	1
2394	99	313	0,312	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	12:02:16	1
2393	99	312	0,311	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	07:25:12	0
2393	99	312	0,311	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	11:35:13	0
2396	99	310	0,309	cyclictest	2165	-21	kworker/u16:3+efi_rts_wq	10:55:14	3
2396	99	310	0,308	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	08:00:13	3
2396	99	309	0,308	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	11:40:12	3
2393	99	309	0,308	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:25:14	0
2395	99	308	0,307	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	07:20:14	2
2394	99	308	0,307	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	10:30:12	1
2396	99	307	0,306	cyclictest	2165	-21	kworker/u16:3+efi_rts_wq	10:45:14	3
2393	99	307	0,306	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	11:27:11	0
2394	99	306	0,305	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	09:51:55	1
2396	99	302	0,301	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	12:15:13	3
2396	99	302	0,301	cyclictest	15007	-21	kworker/u16:2+efi_rts_wq	11:25:13	3
2393	99	302	0,301	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	10:00:14	0
2395	99	301	0,300	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:05:13	2
2393	99	301	0,300	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	10:25:14	0
2396	99	300	0,298	cyclictest	31557	-21	kworker/u16:2+efi_rts_wq	10:35:14	3
2393	99	300	0,299	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	09:10:13	0
2394	99	299	0,298	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	08:10:12	1
2394	99	299	0,297	cyclictest	12296	-21	kworker/u16:0+efi_rts_wq	11:10:12	1
2394	99	298	0,297	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	11:50:13	1
2393	99	298	0,296	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	07:10:14	0
2396	99	297	0,296	cyclictest	12296	-21	kworker/u16:0+efi_rts_wq	11:05:13	3
2395	99	297	0,296	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	10:27:00	2
2396	99	296	0,295	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	09:00:13	3
2393	99	296	0,295	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	12:05:13	0
2396	99	295	0,294	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	12:35:12	3
2395	99	295	0,294	cyclictest	9527	-21	kworker/u16:1+efi_rts_wq	10:50:13	2
2395	99	295	0,294	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:35:14	2
2395	99	295	0,294	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	07:15:13	2
2395	99	295	0,294	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	09:40:14	2
2393	99	295	0,294	cyclictest	2165	-21	kworker/u16:3+efi_rts_wq	10:55:12	0
2394	99	293	0,292	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	09:30:13	1
2395	99	292	0,291	cyclictest	15007	-21	kworker/u16:2+efi_rts_wq	11:32:12	2
2395	99	288	0,287	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	10:10:12	2
2394	99	288	0,287	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	09:06:47	1
2393	99	287	0,286	cyclictest	2165	-21	kworker/u16:3+efi_rts_wq	10:50:13	0
2396	99	286	0,285	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	07:55:12	3
2396	99	286	0,285	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	11:55:14	3
2394	99	286	0,285	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	09:16:49	1
2394	99	286	0,285	cyclictest	12296	-21	kworker/u16:0+efi_rts_wq	10:57:05	1
2393	99	286	0,285	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	11:45:15	0
2394	99	285	0,284	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	07:35:14	1
2395	99	284	0,283	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	10:20:16	2
2394	99	284	0,283	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	07:45:12	1
2394	99	284	0,283	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	12:37:24	1
2393	99	282	0,281	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:55:13	0
2396	99	280	0,279	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	09:30:13	3
2395	99	279	0,278	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	10:05:14	2
2395	99	279	0,278	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	10:05:13	2
2393	99	279	0,278	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	11:42:13	0
2395	99	278	0,277	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	12:20:13	2
2394	99	278	0,277	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:30:13	1
2394	99	278	0,277	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	12:12:18	1
2394	99	278	0,274	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	08:50:13	1
2394	99	277	0,276	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	09:20:13	1
2393	99	277	0,276	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	09:56:56	0
2396	99	276	0,275	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	09:36:53	3
2396	99	274	0,273	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	10:40:13	3
2396	99	273	0,272	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	12:10:12	3
2394	99	273	0,272	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	09:01:46	1
2393	99	271	0,270	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	11:22:09	0
2393	99	271	0,270	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	07:41:31	0
2394	99	270	0,269	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:55:14	1
2396	99	269	0,268	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	07:15:13	3
2395	99	267	0,266	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	11:55:15	2
2394	99	266	0,265	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:15:14	1
2393	99	265	0,264	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	10:32:01	0
2396	99	264	0,263	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:36:41	3
2395	99	264	0,263	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	07:30:14	2
2393	99	264	0,262	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	09:05:12	0
2396	99	262	0,259	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	11:15:11	3
2395	99	262	0,261	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:45:13	2
2395	99	262	0,261	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	08:11:36	2
2394	99	261	0,260	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	12:05:13	1
2393	99	260	0,259	cyclictest	12296	-21	kworker/u16:0+efi_rts_wq	11:05:14	0
2393	99	257	0,256	cyclictest	1007	-21	kworker/u16:0+efi_rts_wq	11:57:16	0
2394	99	255	0,254	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	10:15:12	1
2393	99	255	0,254	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	09:40:14	0
2395	99	254	0,253	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	10:16:59	2
2394	99	254	0,253	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	07:11:25	1
2396	99	253	0,252	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	08:30:14	3
2396	99	253	0,250	cyclictest	2165	-21	kworker/u16:3+efi_rts_wq	11:00:13	3
2394	99	253	0,252	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	07:15:00	1
2393	99	253	0,252	cyclictest	12296	-21	kworker/u16:0+efi_rts_wq	11:10:12	0
2393	99	246	0,245	cyclictest	16698	-21	kworker/u16:0+efi_rts_wq	09:35:12	0
2395	99	245	0,244	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	08:00:14	2
2393	99	244	0,242	cyclictest	31557	-21	kworker/u16:2+efi_rts_wq	10:35:13	0
2393	99	241	0,239	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	08:10:11	0
2394	99	239	0,238	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	12:25:13	1
2396	99	238	0,237	cyclictest	23295	-21	kworker/u16:1+efi_rts_wq	11:50:14	3
2393	99	238	0,237	cyclictest	13077	-21	kworker/u16:1+efi_rts_wq	09:15:12	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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