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 Sep 16, 2025 00:43:54)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
26342	2	321	307,5	sleep3	0	-21	swapper/3	19:07:29	3
26444	2	318	303,4	sleep1	0	-21	swapper/1	19:08:47	1
26393	2	317	305,4	sleep2	0	-21	swapper/2	19:08:09	2
26223	2	315	308,5	sleep0	0	-21	swapper/0	19:05:58	0
26807	99	297	0,296	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	21:50:14	2
26805	99	296	0,294	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	20:15:13	0
26808	99	295	0,294	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	21:10:19	3
26806	99	293	0,292	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:25:14	1
26806	99	293	0,292	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	20:05:16	1
26805	99	293	0,290	cyclictest	19043	-21	kworker/u16:3+efi_rts_wq	22:45:14	0
26806	99	292	0,291	cyclictest	24988	-21	kworker/u16:0+efi_rts_wq	00:05:13	1
26807	99	291	0,290	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:45:13	2
26807	99	290	0,289	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	19:50:13	2
26805	99	290	0,287	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	23:50:14	0
26808	99	289	0,288	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:40:13	3
26807	99	289	0,287	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	21:20:14	2
26806	99	289	0,288	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	21:25:22	1
26806	99	289	0,288	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:55:12	1
26808	99	288	0,287	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	20:05:05	3
26807	99	287	0,286	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	20:30:10	2
26805	99	287	0,286	cyclictest	5840	-21	kworker/u16:0+efi_rts_wq	22:30:34	0
26808	99	286	0,285	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	19:15:00	3
26806	99	286	0,285	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	20:35:14	1
26805	99	286	0,283	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	22:00:16	0
26807	99	285	0,284	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	21:25:13	2
26807	99	285	0,284	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	21:40:14	2
26807	99	285	0,284	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	20:00:14	2
26808	99	284	0,282	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	00:15:13	3
26805	99	284	0,283	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	23:05:15	0
26805	99	283	0,282	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:35:14	0
26808	99	281	0,280	cyclictest	5840	-21	kworker/u16:0+efi_rts_wq	22:20:13	3
26808	99	281	0,280	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	20:20:09	3
26807	99	280	0,279	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	20:45:14	2
26805	99	280	0,279	cyclictest	11174	-21	kworker/u16:1+efi_rts_wq	23:55:12	0
26806	99	279	0,278	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	21:20:13	1
26807	99	278	0,277	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	00:35:14	2
26806	99	278	0,277	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	20:10:07	1
26806	99	277	0,276	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:45:12	1
26808	99	276	0,275	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	21:35:12	3
26807	99	276	0,275	cyclictest	19043	-21	kworker/u16:3+efi_rts_wq	22:50:14	2
26807	99	276	0,275	cyclictest	19043	-21	kworker/u16:3+efi_rts_wq	22:50:14	2
26806	99	276	0,275	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	21:35:12	1
26805	99	276	0,274	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:25:14	0
26807	99	275	0,274	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:20:14	2
26806	99	275	0,274	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:25:14	1
26807	99	274	0,273	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	00:30:15	2
26805	99	274	0,273	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	23:15:14	0
26806	99	273	0,272	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	20:40:13	1
26806	99	272	0,271	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	20:30:12	1
26806	99	270	0,269	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:00:14	1
26807	99	269	0,268	cyclictest	24988	-21	kworker/u16:0+efi_rts_wq	00:05:13	2
26805	99	269	0,268	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:45:02	0
26807	99	267	0,265	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:10:15	2
26806	99	267	0,266	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	00:20:51	1
26806	99	266	0,264	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	21:45:13	1
26808	99	265	0,263	cyclictest	19043	-21	kworker/u16:3+efi_rts_wq	22:50:38	3
26808	99	265	0,263	cyclictest	19043	-21	kworker/u16:3+efi_rts_wq	22:50:37	3
26806	99	265	0,264	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:10:15	1
26805	99	265	0,262	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	00:10:16	0
26806	99	264	0,263	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:35:44	1
26808	99	263	0,261	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	23:50:12	3
26808	99	262	0,261	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:20:14	3
26805	99	262	0,261	cyclictest	5840	-21	kworker/u16:0+efi_rts_wq	22:15:30	0
26805	99	261	0,260	cyclictest	21684	-21	kworker/u16:2+efi_rts_wq	22:55:13	0
26808	99	259	0,258	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	22:35:15	3
26808	99	258	0,257	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	21:15:17	3
26805	99	257	0,256	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	21:50:13	0
26805	99	256	0,255	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:40:13	0
26806	99	253	0,252	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	23:15:41	1
26806	99	253	0,252	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	22:00:27	1
26806	99	252	0,251	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	22:35:15	1
26805	99	252	0,251	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:00:15	0
26808	99	250	0,249	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	20:50:14	3
26806	99	250	0,249	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:30:13	1
26805	99	250	0,249	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	19:15:13	0
26805	99	250	0,249	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	00:25:12	0
26808	99	249	0,248	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:35:14	3
26808	99	248	0,247	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	22:45:36	3
26806	99	247	0,246	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	21:00:15	1
26807	99	246	0,245	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	00:00:14	2
26807	99	244	0,243	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	00:15:13	2
26806	99	243	0,242	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:30:10	1
26807	99	241	0,240	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	20:25:10	2
26806	99	241	0,240	cyclictest	5840	-21	kworker/u16:0+efi_rts_wq	22:25:13	1
26805	99	241	0,240	cyclictest	11174	-21	kworker/u16:1+efi_rts_wq	23:30:11	0
26807	99	240	0,239	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:45:12	2
26806	99	240	0,239	cyclictest	5840	-21	kworker/u16:0+efi_rts_wq	22:40:14	1
26808	99	239	0,238	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	22:10:14	3
26805	99	239	0,238	cyclictest	5840	-21	kworker/u16:0+efi_rts_wq	22:40:14	0
26805	99	238	0,237	cyclictest	15747	-21	kworker/u16:3+efi_rts_wq	00:20:13	0
26808	99	235	0,234	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	20:55:12	3
26805	99	235	0,234	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	21:55:17	0
26805	99	235	0,234	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	19:55:04	0
26806	99	234	0,231	cyclictest	5840	-21	kworker/u16:0+efi_rts_wq	22:20:12	1
26807	99	232	0,231	cyclictest	29438	-21	kworker/u16:0+efi_rts_wq	23:40:14	2
26806	99	229	0,228	cyclictest	26673	-21	kworker/u16:3+efi_rts_wq	21:05:12	1
26808	99	228	0,227	cyclictest	24988	-21	kworker/u16:0+efi_rts_wq	00:25:51	3
26806	99	228	0,225	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	19:50:13	1
26805	99	226	0,225	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	19:25:14	0
26807	99	225	0,224	cyclictest	16238	-21	kworker/u16:1+efi_rts_wq	21:30:15	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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