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 Tue Apr 21, 2026 12:43:55)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
16554	2	332	307,23	sleep1	0	-21	swapper/1	07:05:48	1
16755	2	318	310,5	sleep3	0	-21	swapper/3	07:08:23	3
16582	2	317	307,8	sleep2	0	-21	swapper/2	07:06:09	2
16580	2	317	303,5	sleep0	0	-21	swapper/0	07:06:08	0
17145	99	312	0,311	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:45:13	0
17146	99	310	0,308	cyclictest	18742	-21	kworker/u16:1+efi_rts_wq	10:40:14	1
17148	99	308	0,307	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	09:17:36	3
17148	99	308	0,307	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	09:17:35	3
17147	99	308	0,307	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:45:12	2
17147	99	308	0,307	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:00:13	2
17146	99	308	0,307	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:50:12	1
17148	99	307	0,306	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:57:20	3
17145	99	305	0,304	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	08:02:21	0
17145	99	302	0,301	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	08:15:13	0
17148	99	301	0,300	cyclictest	20748	-21	kworker/u16:0+efi_rts_wq	12:10:12	3
17148	99	301	0,300	cyclictest	13138	-21	kworker/u16:1+efi_rts_wq	11:55:18	3
17147	99	301	0,300	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:55:14	2
17148	99	300	0,299	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	09:52:44	3
17146	99	300	0,298	cyclictest	20748	-21	kworker/u16:0+efi_rts_wq	11:50:13	1
17145	99	299	0,298	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:15:14	0
17148	99	298	0,297	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	08:20:11	3
17145	99	298	0,297	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:35:14	0
17148	99	297	0,296	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:10:12	3
17146	99	297	0,296	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:45:12	1
17148	99	296	0,295	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	08:10:12	3
17148	99	295	0,294	cyclictest	3139	-21	kworker/u16:4+efi_rts_wq	11:10:14	3
17145	99	294	0,293	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	10:10:12	0
17145	99	294	0,293	cyclictest	13138	-21	kworker/u16:1+efi_rts_wq	11:58:10	0
17147	99	292	0,291	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:15:12	2
17146	99	292	0,291	cyclictest	20748	-21	kworker/u16:0+efi_rts_wq	12:20:13	1
17145	99	292	0,291	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:25:14	0
17145	99	292	0,291	cyclictest	20748	-21	kworker/u16:0+efi_rts_wq	12:23:13	0
17147	99	288	0,287	cyclictest	20748	-21	kworker/u16:0+efi_rts_wq	12:25:14	2
17145	99	288	0,287	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	10:30:13	0
17145	99	287	0,286	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:00:12	0
17148	99	285	0,284	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:40:14	3
17146	99	285	0,284	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:32:51	1
17148	99	284	0,283	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:20:12	3
17146	99	284	0,283	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:00:12	1
17146	99	284	0,283	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	10:07:45	1
17146	99	284	0,283	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	09:22:36	1
17148	99	282	0,281	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	09:32:40	3
17146	99	282	0,281	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	10:20:12	1
17145	99	281	0,277	cyclictest	20748	-21	kworker/u16:0+efi_rts_wq	11:50:13	0
17146	99	280	0,279	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	08:05:13	1
17146	99	280	0,279	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	09:57:44	1
17146	99	280	0,278	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:45:12	1
17148	99	279	0,278	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	08:52:31	3
17148	99	279	0,278	cyclictest	13138	-21	kworker/u16:1+efi_rts_wq	12:03:10	3
17147	99	279	0,278	cyclictest	30873	-21	kworker/u16:3+efi_rts_wq	12:35:14	2
17146	99	279	0,278	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	09:15:13	1
17146	99	279	0,278	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	09:15:13	1
17146	99	279	0,278	cyclictest	20748	-21	kworker/u16:0+efi_rts_wq	12:10:12	1
17147	99	278	0,277	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:22:13	2
17146	99	278	0,277	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	09:10:13	1
17146	99	278	0,277	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:50:13	1
17146	99	276	0,275	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	07:50:12	1
17145	99	275	0,274	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	09:30:11	0
17145	99	275	0,274	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:12:11	0
17146	99	273	0,272	cyclictest	18742	-21	kworker/u16:1+efi_rts_wq	11:05:13	1
17145	99	273	0,272	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	09:35:12	0
17145	99	273	0,272	cyclictest	13138	-21	kworker/u16:1+efi_rts_wq	11:35:14	0
17147	99	272	0,271	cyclictest	20748	-21	kworker/u16:0+efi_rts_wq	12:15:12	2
17148	99	271	0,270	cyclictest	6126	-21	kworker/u16:0+efi_rts_wq	11:25:13	3
17148	99	271	0,269	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	09:25:11	3
17146	99	271	0,270	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:55:13	1
17145	99	270	0,269	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	10:22:49	0
17145	99	269	0,268	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:35:16	0
17148	99	268	0,267	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	09:55:13	3
17145	99	267	0,266	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:50:12	0
17146	99	265	0,264	cyclictest	30873	-21	kworker/u16:3+efi_rts_wq	12:38:16	1
17148	99	263	0,262	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:35:12	3
17148	99	261	0,260	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:25:12	3
17148	99	261	0,259	cyclictest	20748	-21	kworker/u16:0+efi_rts_wq	11:50:13	3
17146	99	261	0,260	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:10:13	1
17147	99	260	0,259	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	08:25:15	2
17146	99	259	0,258	cyclictest	18742	-21	kworker/u16:1+efi_rts_wq	10:55:14	1
17148	99	257	0,255	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:40:14	3
17147	99	257	0,256	cyclictest	27163	-21	kworker/u16:2+efi_rts_wq	11:20:12	2
17148	99	256	0,255	cyclictest	23041	-21	kworker/u16:3+efi_rts_wq	10:42:54	3
17145	99	256	0,255	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	10:05:12	0
17146	99	255	0,254	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	09:00:13	1
17148	99	254	0,253	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	09:00:13	3
17145	99	254	0,253	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	09:25:11	0
17146	99	252	0,251	cyclictest	27163	-21	kworker/u16:2+efi_rts_wq	11:15:13	1
17145	99	250	0,249	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	09:50:13	0
17147	99	248	0,247	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:35:14	2
17146	99	245	0,244	cyclictest	11211	-21	kworker/u16:3+efi_rts_wq	07:42:17	1
17145	99	245	0,244	cyclictest	27163	-21	kworker/u16:2+efi_rts_wq	11:20:12	0
17146	99	239	0,238	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	09:35:13	1
17146	99	239	0,238	cyclictest	13138	-21	kworker/u16:1+efi_rts_wq	11:30:12	1
17145	99	237	0,236	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:57:32	0
17148	99	236	0,235	cyclictest	13138	-21	kworker/u16:1+efi_rts_wq	11:40:11	3
17148	99	235	0,234	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:30:12	3
17148	99	235	0,234	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	07:15:13	3
17148	99	233	0,232	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	10:05:12	3
17148	99	232	0,231	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	10:20:13	3
17146	99	229	0,228	cyclictest	18742	-21	kworker/u16:1+efi_rts_wq	11:00:12	1
17146	99	229	0,228	cyclictest	14371	-21	kworker/u16:0+efi_rts_wq	08:30:14	1
17145	99	227	0,226	cyclictest	3538	-21	kworker/u16:2+efi_rts_wq	08:20:11	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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