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 Mar 19, 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
19908	2	320	305,5	sleep2	0	-21	swapper/2	19:08:30	2
19708	2	318	304,5	sleep1	0	-21	swapper/1	19:05:53	1
17971	2	316	308,5	sleep3	0	-21	swapper/3	19:05:11	3
20294	99	315	0,314	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	19:45:11	0
20295	99	314	0,313	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	22:45:12	1
20296	99	313	0,312	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	19:30:11	2
17963	2	313	306,5	sleep0	0	-21	swapper/0	19:05:04	0
20297	99	312	0,311	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	22:44:15	3
20294	99	312	0,311	cyclictest	24300	-21	kworker/u16:2+efi_rts_wq	22:50:12	0
20297	99	311	0,310	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	19:18:36	3
20294	99	311	0,310	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	23:50:11	0
20294	99	310	0,309	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	22:10:12	0
20294	99	310	0,309	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	20:28:49	0
20297	99	309	0,308	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	19:55:12	3
20294	99	306	0,305	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	22:20:14	0
20297	99	305	0,304	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	22:55:13	3
20297	99	304	0,303	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	20:05:12	3
20297	99	303	0,302	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	00:20:12	3
20296	99	303	0,302	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	20:30:10	2
20294	99	303	0,302	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	00:36:10	0
20296	99	302	0,301	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	20:23:49	2
20295	99	302	0,301	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:00:13	1
20297	99	301	0,300	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:55:12	3
20297	99	301	0,300	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:55:11	3
20294	99	301	0,300	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	20:40:10	0
20294	99	299	0,298	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	20:45:11	0
20294	99	298	0,297	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	20:33:51	0
20297	99	297	0,296	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	23:19:22	3
20296	99	297	0,296	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	22:45:14	2
20295	99	297	0,296	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	23:40:13	1
20295	99	296	0,295	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	19:35:12	1
20296	99	295	0,294	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:15:11	2
20296	99	294	0,293	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	19:45:12	2
20295	99	293	0,292	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:20:13	1
20297	99	292	0,291	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	00:30:12	3
20295	99	292	0,291	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	20:30:10	1
20294	99	291	0,289	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	22:55:12	0
20294	99	289	0,288	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	00:20:11	0
20295	99	288	0,287	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	20:38:51	1
20295	99	288	0,287	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	19:10:11	1
20296	99	286	0,285	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	23:55:12	2
20295	99	286	0,285	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	22:04:08	1
20294	99	286	0,285	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	23:45:12	0
20295	99	284	0,283	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	00:26:08	1
20296	99	283	0,282	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	20:35:13	2
20295	99	282	0,281	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	22:40:12	1
20294	99	282	0,281	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	22:09:08	0
20297	99	281	0,280	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	21:03:57	3
20294	99	281	0,280	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:49:05	0
20295	99	280	0,279	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	22:15:11	1
20294	99	280	0,279	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	23:39:26	0
20296	99	279	0,278	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	19:15:02	2
20295	99	278	0,277	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:29:00	1
20294	99	278	0,277	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	19:35:11	0
20297	99	277	0,276	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:50:12	3
20296	99	277	0,276	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	19:50:12	2
20296	99	276	0,275	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	20:55:12	2
20294	99	276	0,275	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	22:25:12	0
20297	99	274	0,273	cyclictest	24300	-21	kworker/u16:2+efi_rts_wq	23:00:13	3
20295	99	274	0,271	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	00:00:14	1
20297	99	273	0,272	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	20:48:54	3
20297	99	272	0,269	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	20:20:11	3
20296	99	271	0,270	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	00:00:14	2
20297	99	270	0,269	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	21:25:11	3
20296	99	270	0,269	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	19:25:13	2
20297	99	269	0,268	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:44:04	3
20296	99	268	0,267	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	23:35:13	2
20294	99	268	0,267	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	00:31:08	0
20297	99	267	0,266	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	22:34:12	3
20294	99	267	0,264	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	00:15:11	0
20294	99	266	0,265	cyclictest	24300	-21	kworker/u16:2+efi_rts_wq	23:00:13	0
20294	99	264	0,263	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:30:12	0
20297	99	262	0,261	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	22:39:14	3
20294	99	262	0,261	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	22:35:11	0
20297	99	260	0,259	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	21:39:02	3
20295	99	260	0,259	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	21:08:57	1
20297	99	258	0,257	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	19:40:12	3
20295	99	258	0,257	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	21:34:02	1
20295	99	258	0,257	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	19:40:13	1
20294	99	258	0,257	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	23:25:13	0
20295	99	256	0,255	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	20:15:12	1
20294	99	255	0,254	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	00:25:11	0
20296	99	254	0,253	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	20:15:13	2
20295	99	254	0,253	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	23:24:23	1
20295	99	254	0,253	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	00:21:07	1
20295	99	249	0,248	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	21:10:13	1
20294	99	248	0,245	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	22:30:12	0
20295	99	246	0,245	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	19:58:44	1
20295	99	246	0,245	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	23:55:12	1
20296	99	245	0,244	cyclictest	32506	-21	kworker/u16:0+efi_rts_wq	23:20:13	2
20297	99	244	0,243	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	00:35:12	3
20295	99	242	0,241	cyclictest	24300	-21	kworker/u16:2+efi_rts_wq	23:04:19	1
20297	99	241	0,240	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	22:15:11	3
20295	99	239	0,238	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	00:10:11	1
20296	99	235	0,234	cyclictest	17700	-21	kworker/u16:0+efi_rts_wq	21:24:00	2
20296	99	234	0,233	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	23:30:13	2
20297	99	233	0,230	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	19:10:10	3
20295	99	233	0,232	cyclictest	12016	-21	kworker/u16:3+efi_rts_wq	20:00:14	1
20294	99	232	0,231	cyclictest	5608	-21	kworker/u16:1+efi_rts_wq	23:34:25	0
20297	99	231	0,230	cyclictest	13812	-21	kworker/u16:3+efi_rts_wq	23:51:02	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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