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 Jan 16, 2026 00:43:55)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
30626	2	329	306,5	sleep3	0	-21	swapper/3	19:06:45	3
30775	2	319	305,5	sleep1	0	-21	swapper/1	19:08:39	1
30853	2	318	304,5	sleep2	0	-21	swapper/2	19:09:40	2
30588	2	315	309,4	sleep0	0	-21	swapper/0	19:06:14	0
31147	99	311	0,310	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:10:13	0
31150	99	310	0,309	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	21:10:05	3
31149	99	308	0,307	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	23:45:31	2
31148	99	307	0,306	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	23:25:13	1
31150	99	306	0,305	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	21:20:13	3
31148	99	306	0,305	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	19:15:01	1
31147	99	306	0,303	cyclictest	2950	-21	kworker/u16:0+efi_rts_wq	23:50:12	0
31150	99	305	0,304	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	00:30:13	3
31150	99	305	0,304	cyclictest	2950	-21	kworker/u16:0+efi_rts_wq	23:55:13	3
31147	99	305	0,304	cyclictest	18231	-21	kworker/u16:2+efi_rts_wq	23:00:13	0
31147	99	304	0,302	cyclictest	18231	-21	kworker/u16:2+efi_rts_wq	22:55:12	0
31150	99	303	0,302	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	20:45:12	3
31149	99	302	0,301	cyclictest	30782	-21	kworker/u16:3+efi_rts_wq	00:25:13	2
31148	99	302	0,301	cyclictest	2950	-21	kworker/u16:0+efi_rts_wq	23:20:12	1
31149	99	301	0,300	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:50:13	2
31149	99	301	0,300	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:05:11	2
31148	99	301	0,300	cyclictest	30782	-21	kworker/u16:3+efi_rts_wq	00:25:13	1
31150	99	299	0,298	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:55:23	3
31150	99	299	0,298	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:55:13	3
31150	99	297	0,296	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	19:40:13	3
31150	99	296	0,295	cyclictest	2950	-21	kworker/u16:0+efi_rts_wq	23:15:12	3
31148	99	296	0,295	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	00:35:39	1
31148	99	296	0,295	cyclictest	30782	-21	kworker/u16:3+efi_rts_wq	00:20:12	1
31147	99	296	0,295	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	21:35:14	0
31150	99	295	0,294	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:30:11	3
31148	99	295	0,294	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	22:30:13	1
31150	99	293	0,291	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	23:45:11	3
31147	99	289	0,288	cyclictest	30782	-21	kworker/u16:3+efi_rts_wq	00:20:37	0
31147	99	286	0,285	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	00:15:11	0
31150	99	284	0,283	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	22:05:15	3
31147	99	284	0,283	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	20:00:13	0
31147	99	284	0,283	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	20:00:13	0
31150	99	283	0,282	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	00:05:14	3
31150	99	283	0,281	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	23:35:30	3
31148	99	282	0,281	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:40:13	1
31148	99	282	0,281	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	19:55:11	1
31148	99	282	0,281	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	19:55:11	1
31147	99	282	0,281	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:50:12	0
31147	99	282	0,281	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	23:30:12	0
31150	99	281	0,280	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	22:30:12	3
31148	99	281	0,280	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	19:39:49	1
31150	99	280	0,279	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	21:15:12	3
31149	99	280	0,279	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:50:13	2
31148	99	279	0,278	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	20:19:56	1
31148	99	279	0,278	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	23:10:12	1
31150	99	275	0,273	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:45:14	3
31147	99	275	0,274	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:30:11	0
31147	99	275	0,274	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	00:35:14	0
31150	99	274	0,272	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:05:10	3
31149	99	274	0,273	cyclictest	18231	-21	kworker/u16:2+efi_rts_wq	23:00:12	2
31148	99	273	0,272	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:55:14	1
31147	99	273	0,272	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:35:13	0
31150	99	266	0,265	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	00:00:13	3
31147	99	266	0,265	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	22:25:13	0
31147	99	266	0,265	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:15:21	0
31147	99	266	0,265	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	19:35:16	0
31149	99	264	0,263	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	19:15:12	2
31150	99	263	0,262	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:40:10	3
31150	99	260	0,259	cyclictest	18231	-21	kworker/u16:2+efi_rts_wq	22:50:22	3
31150	99	257	0,256	cyclictest	30782	-21	kworker/u16:3+efi_rts_wq	00:15:36	3
31147	99	256	0,255	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:45:10	0
31147	99	255	0,254	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	19:29:47	0
31149	99	254	0,253	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	19:20:14	2
31148	99	253	0,252	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:40:21	1
31150	99	252	0,250	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:15:20	3
31149	99	252	0,251	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	19:55:11	2
31149	99	252	0,251	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	19:55:11	2
31150	99	251	0,250	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	20:05:12	3
31149	99	250	0,249	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:00:13	2
31148	99	250	0,249	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	22:15:11	1
31149	99	249	0,247	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	21:25:14	2
31148	99	248	0,247	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:05:04	1
31147	99	247	0,244	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:10:13	0
31150	99	246	0,245	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:10:14	3
31148	99	246	0,245	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:30:09	1
31150	99	245	0,244	cyclictest	30782	-21	kworker/u16:3+efi_rts_wq	00:10:11	3
31149	99	245	0,244	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:30:14	2
31147	99	245	0,244	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	19:50:12	0
31147	99	245	0,244	cyclictest	2950	-21	kworker/u16:0+efi_rts_wq	23:55:13	0
31150	99	244	0,243	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	20:45:00	3
31150	99	241	0,240	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:45:10	3
31148	99	240	0,239	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	19:30:12	1
31150	99	239	0,238	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:35:13	3
31148	99	239	0,238	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	20:20:13	1
31148	99	238	0,237	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	23:55:32	1
31150	99	236	0,235	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:25:12	3
31148	99	234	0,233	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:50:13	1
31149	99	233	0,232	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:35:13	2
31150	99	232	0,231	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	21:55:14	3
31148	99	231	0,230	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	00:30:39	1
31147	99	226	0,225	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	20:20:13	0
31148	99	223	0,222	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	20:09:54	1
31150	99	221	0,220	cyclictest	5464	-21	kworker/u16:2+efi_rts_wq	23:25:12	3
31150	99	218	0,217	cyclictest	2950	-21	kworker/u16:0+efi_rts_wq	23:40:11	3
31148	99	218	0,217	cyclictest	6055	-21	kworker/u16:0+efi_rts_wq	22:20:12	1
31150	99	217	0,216	cyclictest	780	-21	kworker/u16:3+efi_rts_wq	19:15:12	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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