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 Thu Apr 09, 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
29396	2	327	320,5	sleep2	0	-21	swapper/2	19:07:45	2
29526	2	323	315,5	sleep3	0	-21	swapper/3	19:09:26	3
29420	2	316	308,5	sleep1	0	-21	swapper/1	19:08:05	1
29838	99	315	0,314	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	22:15:13	1
29838	99	315	0,314	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	19:25:12	1
29838	99	315	0,313	cyclictest	8133	-21	kworker/u16:0+efi_rts_wq	00:25:14	1
29404	2	315	307,5	sleep0	0	-21	swapper/0	19:07:52	0
29839	99	313	0,312	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:50:12	2
29839	99	311	0,309	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	00:00:12	2
29839	99	310	0,308	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	22:50:12	2
29837	99	308	0,307	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:13:56	0
29840	99	307	0,306	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	22:05:12	3
29837	99	307	0,306	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	20:35:12	0
29840	99	306	0,305	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:38:49	3
29840	99	306	0,305	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	20:50:12	3
29838	99	303	0,302	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:24:09	1
29838	99	303	0,302	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:55:12	1
29838	99	303	0,302	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:25:13	1
29840	99	299	0,298	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	23:45:13	3
29838	99	298	0,297	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:35:11	1
29837	99	298	0,297	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:10:12	0
29839	99	297	0,294	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	20:00:12	2
29839	99	297	0,294	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:40:12	2
29840	99	295	0,294	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:00:12	3
29840	99	293	0,292	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	00:15:11	3
29840	99	293	0,292	cyclictest	8133	-21	kworker/u16:0+efi_rts_wq	00:26:12	3
29840	99	293	0,292	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:58:53	3
29837	99	293	0,292	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:50:12	0
29838	99	292	0,291	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:10:12	1
29840	99	290	0,289	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	20:45:11	3
29839	99	290	0,289	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	20:20:13	2
29838	99	290	0,289	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:15:12	1
29838	99	290	0,289	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:15:11	1
29840	99	288	0,287	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:35:13	3
29839	99	288	0,287	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:20:13	2
29839	99	288	0,287	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	20:48:38	2
29837	99	288	0,287	cyclictest	8133	-21	kworker/u16:0+efi_rts_wq	00:35:13	0
29837	99	288	0,287	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:05:11	0
29840	99	287	0,286	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	20:30:12	3
29840	99	287	0,286	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:30:12	3
29837	99	286	0,285	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	23:30:13	0
29837	99	286	0,285	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	20:25:14	0
29840	99	285	0,284	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:40:11	3
29840	99	285	0,284	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:28:59	3
29837	99	283	0,282	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:13:43	0
29840	99	282	0,281	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:55:13	3
29838	99	281	0,280	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:50:12	1
29840	99	280	0,279	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:00:13	3
29838	99	280	0,279	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	20:13:32	1
29840	99	279	0,278	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	20:23:34	3
29837	99	278	0,277	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:20:12	0
29839	99	275	0,274	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	23:00:15	2
29838	99	275	0,274	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	23:35:11	1
29838	99	274	0,273	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	22:20:12	1
29840	99	273	0,272	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	00:10:12	3
29839	99	272	0,271	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:30:11	2
29838	99	271	0,270	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	20:18:32	1
29837	99	271	0,270	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:35:12	0
29840	99	270	0,269	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	23:25:11	3
29837	99	270	0,269	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:15:11	0
29838	99	269	0,268	cyclictest	8133	-21	kworker/u16:0+efi_rts_wq	00:20:12	1
29838	99	269	0,268	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:48:51	1
29838	99	269	0,266	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:55:13	1
29837	99	269	0,268	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:55:12	0
29840	99	268	0,267	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:30:12	3
29840	99	267	0,266	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	00:06:08	3
29839	99	267	0,266	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	19:25:14	2
29840	99	264	0,263	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:53:51	3
29837	99	263	0,262	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:55:20	0
29840	99	262	0,261	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:15:13	3
29839	99	260	0,259	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:45:14	2
29840	99	257	0,256	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:08:42	3
29839	99	256	0,255	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:50:12	2
29840	99	255	0,254	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	23:05:12	3
29839	99	255	0,254	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:15:12	2
29839	99	255	0,254	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:15:11	2
29837	99	255	0,254	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	20:05:12	0
29839	99	254	0,253	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:25:13	2
29840	99	251	0,250	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:50:12	3
29839	99	251	0,250	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	23:39:11	2
29838	99	251	0,250	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:34:11	1
29840	99	250	0,248	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	22:45:19	3
29839	99	250	0,249	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:55:11	2
29838	99	250	0,249	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	22:45:18	1
29837	99	250	0,249	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	20:00:12	0
29837	99	250	0,249	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:25:14	0
29840	99	249	0,248	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	19:35:14	3
29839	99	249	0,248	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	20:40:13	2
29838	99	248	0,245	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	00:30:13	1
29837	99	248	0,247	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:20:13	0
29839	99	247	0,246	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:10:12	2
29838	99	247	0,246	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	19:40:12	1
29838	99	247	0,246	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	21:00:12	1
29838	99	246	0,245	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	23:00:15	1
29840	99	244	0,243	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	23:20:13	3
29837	99	242	0,241	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	00:31:12	0
29837	99	242	0,241	cyclictest	6047	-21	kworker/u16:0+efi_rts_wq	22:08:54	0
29839	99	241	0,240	cyclictest	9758	-21	kworker/u16:2+efi_rts_wq	23:40:11	2
29840	99	240	0,239	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	21:20:13	3
29838	99	239	0,238	cyclictest	8013	-21	kworker/u16:3+efi_rts_wq	20:55:13	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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