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 Mon Jul 20, 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
27821	2	324	317,5	sleep0	0	-21	swapper/0	07:08:27	0
27660	2	317	303,4	sleep2	0	-21	swapper/2	07:06:26	2
27794	2	315	308,5	sleep3	0	-21	swapper/3	07:08:07	3
27649	2	315	303,4	sleep1	0	-21	swapper/1	07:06:16	1
28324	99	302	0,300	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	11:05:14	3
28321	99	300	0,299	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	07:20:13	1
28321	99	299	0,298	cyclictest	23464	-21	kworker/u16:2+efi_rts_wq	12:23:40	1
28321	99	299	0,298	cyclictest	1463	-21	kworker/u16:0+efi_rts_wq	12:30:13	1
28321	99	297	0,296	cyclictest	7200	-21	kworker/u16:0+efi_rts_wq	11:25:13	1
28324	99	296	0,295	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	07:15:01	3
28324	99	295	0,294	cyclictest	7200	-21	kworker/u16:0+efi_rts_wq	11:58:35	3
28324	99	295	0,294	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	11:15:16	3
28324	99	295	0,294	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	11:15:15	3
28321	99	295	0,292	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	08:25:13	1
28324	99	294	0,291	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	09:20:14	3
28321	99	294	0,293	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	09:55:12	1
28321	99	292	0,291	cyclictest	4681	-21	kworker/u16:2+efi_rts_wq	11:20:14	1
28321	99	292	0,291	cyclictest	4681	-21	kworker/u16:2+efi_rts_wq	11:20:13	1
28324	99	290	0,289	cyclictest	23464	-21	kworker/u16:2+efi_rts_wq	12:05:13	3
28321	99	290	0,289	cyclictest	17521	-21	kworker/u16:1+efi_rts_wq	10:40:13	1
28324	99	289	0,288	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	10:30:13	3
28324	99	289	0,288	cyclictest	25774	-21	kworker/u16:3+efi_rts_wq	12:15:13	3
28321	99	289	0,288	cyclictest	23464	-21	kworker/u16:2+efi_rts_wq	12:25:14	1
28319	99	289	0,287	cyclictest	4681	-21	kworker/u16:2+efi_rts_wq	11:35:14	0
28321	99	288	0,287	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	08:20:13	1
28321	99	286	0,285	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	09:30:13	1
28321	99	286	0,285	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	07:35:11	1
28319	99	286	0,285	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	10:55:14	0
28323	99	284	0,283	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	11:05:13	2
28321	99	284	0,283	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	08:30:13	1
28319	99	284	0,282	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	07:45:12	0
28319	99	284	0,281	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	07:20:13	0
28319	99	283	0,282	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	07:17:44	0
28319	99	283	0,282	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	08:15:13	0
28324	99	282	0,281	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	09:18:06	3
28319	99	282	0,281	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	08:55:12	0
28324	99	281	0,280	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	08:07:54	3
28323	99	281	0,280	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	10:15:10	2
28324	99	280	0,279	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	09:48:12	3
28321	99	280	0,279	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	07:25:10	1
28321	99	280	0,279	cyclictest	23464	-21	kworker/u16:2+efi_rts_wq	12:38:44	1
28319	99	280	0,279	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	08:10:14	0
28323	99	279	0,278	cyclictest	4681	-21	kworker/u16:2+efi_rts_wq	11:20:13	2
28323	99	279	0,278	cyclictest	4681	-21	kworker/u16:2+efi_rts_wq	11:20:13	2
28324	99	278	0,277	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	08:27:57	3
28324	99	277	0,276	cyclictest	17521	-21	kworker/u16:1+efi_rts_wq	10:38:20	3
28321	99	277	0,276	cyclictest	9533	-21	kworker/u16:1+efi_rts_wq	11:50:13	1
28321	99	276	0,275	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	07:30:13	1
28321	99	275	0,274	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	10:25:14	1
28319	99	275	0,274	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	07:57:52	0
28319	99	275	0,274	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	07:10:13	0
28319	99	274	0,273	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	09:28:08	0
28321	99	273	0,272	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	08:00:14	1
28324	99	272	0,271	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	07:45:14	3
28324	99	272	0,271	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	07:35:12	3
28319	99	272	0,270	cyclictest	7200	-21	kworker/u16:0+efi_rts_wq	11:25:13	0
28323	99	270	0,269	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	08:25:13	2
28321	99	270	0,269	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	09:45:13	1
28321	99	270	0,269	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	07:15:14	1
28319	99	270	0,269	cyclictest	17521	-21	kworker/u16:1+efi_rts_wq	11:10:13	0
28323	99	269	0,268	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	10:00:13	2
28323	99	267	0,266	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	08:00:13	2
28321	99	267	0,266	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	07:40:13	1
28324	99	266	0,265	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	09:00:14	3
28324	99	266	0,265	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	09:25:12	3
28324	99	265	0,264	cyclictest	17521	-21	kworker/u16:1+efi_rts_wq	10:45:12	3
28321	99	265	0,264	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	10:20:12	1
28319	99	265	0,264	cyclictest	9533	-21	kworker/u16:1+efi_rts_wq	11:50:12	0
28319	99	265	0,264	cyclictest	4681	-21	kworker/u16:2+efi_rts_wq	11:20:14	0
28319	99	265	0,264	cyclictest	4681	-21	kworker/u16:2+efi_rts_wq	11:20:13	0
28319	99	265	0,264	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	09:43:11	0
28321	99	264	0,263	cyclictest	17521	-21	kworker/u16:1+efi_rts_wq	10:45:12	1
28323	99	263	0,262	cyclictest	25774	-21	kworker/u16:3+efi_rts_wq	12:00:12	2
28324	99	261	0,260	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	09:55:12	3
28324	99	261	0,259	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	11:00:13	3
28323	99	259	0,258	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	10:50:13	2
28324	99	258	0,257	cyclictest	7200	-21	kworker/u16:0+efi_rts_wq	11:30:15	3
28321	99	255	1,253	cyclictest	7200	-21	kworker/u16:0+efi_rts_wq	11:38:32	1
28319	99	255	0,254	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	07:27:46	0
28324	99	254	0,253	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	09:40:14	3
28321	99	254	0,253	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	11:05:13	1
28324	99	252	0,251	cyclictest	7200	-21	kworker/u16:0+efi_rts_wq	11:45:13	3
28324	99	252	0,251	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	09:05:13	3
28319	99	249	0,248	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	10:10:12	0
28323	99	248	0,247	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	09:30:13	2
28323	99	248	0,247	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	08:50:13	2
28323	99	247	0,246	cyclictest	4681	-21	kworker/u16:2+efi_rts_wq	11:35:12	2
28321	99	247	0,246	cyclictest	7200	-21	kworker/u16:0+efi_rts_wq	11:55:15	1
28319	99	246	0,245	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	08:40:13	0
28319	99	246	0,245	cyclictest	7200	-21	kworker/u16:0+efi_rts_wq	11:45:14	0
28324	99	244	0,243	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	07:22:45	3
28323	99	244	0,243	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	07:47:50	2
28321	99	237	0,234	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	09:25:12	1
28324	99	236	0,235	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	08:37:59	3
28319	99	235	0,234	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	09:35:13	0
28319	99	235	0,234	cyclictest	28609	-21	kworker/u16:3+efi_rts_wq	10:35:13	0
28324	99	234	0,233	cyclictest	17521	-21	kworker/u16:1+efi_rts_wq	10:43:23	3
28321	99	234	0,233	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	10:15:10	1
28324	99	231	0,230	cyclictest	23464	-21	kworker/u16:2+efi_rts_wq	12:35:12	3
28323	99	231	0,230	cyclictest	9950	-21	kworker/u16:0+efi_rts_wq	07:37:48	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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