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 Feb 02, 2026 00:43:53)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
20382	2	332	326,4	sleep2	0	-21	swapper/2	19:05:54	2
20654	2	319	312,4	sleep3	0	-21	swapper/3	19:09:23	3
20473	2	317	310,5	sleep1	0	-21	swapper/1	19:07:05	1
20467	2	314	306,5	sleep0	0	-21	swapper/0	19:06:59	0
20967	99	313	0,312	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	20:30:14	2
20968	99	309	0,308	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:05:14	3
20968	99	309	0,308	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:05:13	3
20965	99	309	0,308	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:50:14	0
20968	99	307	0,306	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	19:25:13	3
20968	99	307	0,306	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	20:25:14	3
20965	99	307	0,306	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:40:10	0
20965	99	307	0,306	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	21:30:12	0
20965	99	307	0,306	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	20:15:12	0
20968	99	306	0,305	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	21:50:13	3
20968	99	306	0,304	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:25:13	3
20966	99	306	0,305	cyclictest	8573	-21	kworker/u16:1+efi_rts_wq	00:11:10	1
20967	99	305	0,304	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:40:11	2
20966	99	304	0,303	cyclictest	14987	-21	kworker/u16:2+efi_rts_wq	00:30:13	1
20967	99	303	0,302	cyclictest	14987	-21	kworker/u16:2+efi_rts_wq	00:05:09	2
20967	99	302	0,301	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	19:15:01	2
20965	99	302	0,301	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:45:13	0
20968	99	300	0,298	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:50:13	3
20966	99	300	0,299	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	20:09:08	1
20965	99	300	0,299	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	23:15:12	0
20965	99	299	0,298	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:40:11	0
20965	99	299	0,298	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	19:45:12	0
20968	99	298	0,297	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	19:35:15	3
20968	99	297	0,296	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:00:08	3
20966	99	297	0,296	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	21:15:13	1
20965	99	297	0,295	cyclictest	14987	-21	kworker/u16:2+efi_rts_wq	00:21:11	0
20965	99	296	0,295	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:15:14	0
20966	99	295	0,294	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:45:12	1
20967	99	294	0,293	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	21:14:20	2
20966	99	294	0,293	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	20:49:15	1
20965	99	294	0,293	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:24:47	0
20965	99	294	0,292	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:55:12	0
20966	99	293	0,292	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	19:30:13	1
20968	99	292	0,291	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	20:20:16	3
20966	99	292	0,291	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:30:10	1
20965	99	290	0,289	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:10:12	0
20967	99	289	0,288	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	19:50:12	2
20966	99	289	0,288	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	20:00:13	1
20968	99	288	0,287	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:20:13	3
20967	99	288	0,287	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:25:13	2
20965	99	288	0,287	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	19:30:15	0
20968	99	287	0,285	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:35:15	3
20965	99	286	0,285	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	19:15:12	0
20968	99	285	0,284	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	21:04:19	3
20966	99	283	0,282	cyclictest	14987	-21	kworker/u16:2+efi_rts_wq	00:20:11	1
20965	99	283	0,282	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:30:14	0
20965	99	283	0,282	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	21:00:12	0
20967	99	281	0,280	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:50:13	2
20967	99	281	0,280	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	23:05:18	2
20968	99	280	0,279	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:14:31	3
20968	99	280	0,279	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	23:45:11	3
20967	99	280	0,279	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:05:13	2
20967	99	280	0,279	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:05:13	2
20968	99	279	0,278	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:45:13	3
20967	99	279	0,278	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	21:05:13	2
20965	99	279	0,278	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:55:13	0
20965	99	279	0,278	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:35:14	0
20966	99	278	0,275	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	23:19:44	1
20965	99	277	0,276	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	20:05:13	0
20967	99	276	0,275	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:25:14	2
20966	99	274	0,273	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	20:10:15	1
20965	99	274	0,273	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	21:50:14	0
20966	99	273	0,272	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	20:54:16	1
20965	99	271	0,270	cyclictest	14987	-21	kworker/u16:2+efi_rts_wq	00:00:13	0
20968	99	270	0,269	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	21:25:16	3
20967	99	267	0,266	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	20:55:13	2
20966	99	267	0,266	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	22:00:08	1
20968	99	265	0,264	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:44:49	3
20968	99	265	0,264	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	19:10:13	3
20967	99	265	0,264	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	19:20:13	2
20966	99	265	0,264	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	20:25:14	1
20968	99	264	0,263	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	21:34:24	3
20966	99	264	0,263	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	21:45:12	1
20965	99	262	0,261	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	23:00:14	0
20966	99	261	0,260	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	20:40:13	1
20968	99	259	0,258	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:04:41	3
20965	99	259	0,258	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:50:12	0
20967	99	256	0,255	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:20:13	2
20967	99	255	0,254	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	23:35:14	2
20967	99	252	0,251	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	20:35:13	2
20965	99	252	0,251	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	20:55:14	0
20968	99	250	0,249	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	20:50:13	3
20966	99	250	0,249	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	21:59:28	1
20966	99	249	0,246	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	21:30:11	1
20965	99	249	0,248	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	21:40:08	0
20966	99	248	0,247	cyclictest	14987	-21	kworker/u16:2+efi_rts_wq	00:15:12	1
20968	99	247	0,246	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	19:20:13	3
20966	99	247	0,246	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	20:15:12	1
20968	99	243	0,242	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	19:45:14	3
20968	99	241	0,239	cyclictest	8573	-21	kworker/u16:1+efi_rts_wq	00:25:13	3
20966	99	241	0,240	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	19:25:12	1
20966	99	241	0,240	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:09:31	1
20966	99	241	0,240	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	22:09:30	1
20967	99	240	0,239	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	23:46:05	2
20968	99	239	0,238	cyclictest	10979	-21	kworker/u16:2+efi_rts_wq	23:10:11	3
20965	99	233	0,232	cyclictest	30331	-21	kworker/u16:3+efi_rts_wq	19:24:00	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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