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 Sat Jul 18, 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
22209	2	324	318,4	sleep1	0	-21	swapper/1	19:06:12	1
22265	2	318	305,10	sleep3	0	-21	swapper/3	19:06:54	3
22232	2	316	303,5	sleep2	0	-21	swapper/2	19:06:29	2
22340	2	315	307,5	sleep0	0	-21	swapper/0	19:07:50	0
22774	99	302	0,301	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	22:54:52	3
22773	99	299	0,298	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	23:34:57	2
22772	99	298	0,297	cyclictest	16450	-21	kworker/u16:2+efi_rts_wq	23:00:13	1
22774	99	296	0,295	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:50:14	3
22773	99	296	0,294	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	20:40:13	2
22774	99	294	0,293	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	20:30:11	3
22773	99	294	0,293	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	19:30:13	2
22773	99	293	0,292	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	21:45:13	2
22771	99	291	0,290	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	20:20:13	0
22773	99	290	0,289	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	00:10:13	2
22774	99	289	0,288	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	23:15:11	3
22774	99	289	0,288	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:10:13	3
22772	99	289	0,288	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	00:20:12	1
22771	99	289	0,288	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	20:00:12	0
22772	99	287	0,286	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:34:36	1
22773	99	285	0,284	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	20:05:12	2
22773	99	285	0,284	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	22:24:46	2
22773	99	285	0,284	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	22:24:46	2
22772	99	285	0,284	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:29:55	1
22772	99	285	0,282	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:40:12	1
22773	99	284	0,283	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	19:40:12	2
22774	99	282	0,280	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:05:12	3
22774	99	280	0,279	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	19:15:15	3
22773	99	280	0,279	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	22:40:12	2
22772	99	280	0,279	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	21:09:32	1
22772	99	280	0,279	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	22:04:42	1
22772	99	280	0,279	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	19:39:17	1
22774	99	279	0,278	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	21:30:13	3
22772	99	279	0,278	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	21:45:13	1
22772	99	279	0,278	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:20:13	1
22774	99	278	0,277	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	23:25:14	3
22771	99	276	0,274	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	20:45:13	0
22773	99	275	0,274	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	20:15:14	2
22773	99	275	0,273	cyclictest	16450	-21	kworker/u16:2+efi_rts_wq	23:10:14	2
22772	99	274	0,273	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	19:29:16	1
22772	99	274	0,272	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	20:50:14	1
22774	99	273	0,272	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	20:20:13	3
22771	99	273	0,272	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	22:45:12	0
22771	99	273	0,272	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:24:56	0
22772	99	271	0,270	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	19:50:13	1
22772	99	271	0,270	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	00:31:11	1
22774	99	270	0,269	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	19:40:12	3
22772	99	270	0,269	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	22:15:12	1
22771	99	270	0,269	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:56:04	0
22773	99	268	0,267	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	21:35:12	2
22773	99	268	0,267	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	19:10:12	2
22773	99	267	0,266	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	00:36:13	2
22773	99	267	0,266	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	22:30:12	2
22771	99	267	0,266	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	21:29:36	0
22772	99	266	0,265	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	20:05:11	1
22772	99	265	0,264	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	21:35:12	1
22772	99	265	0,264	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	20:49:29	1
22772	99	265	0,264	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	19:44:18	1
22771	99	265	0,264	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:40:13	0
22773	99	264	0,263	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	00:25:11	2
22771	99	264	0,263	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	00:05:13	0
22773	99	263	0,262	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	22:45:13	2
22773	99	263	0,262	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	22:25:13	2
22772	99	261	0,258	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:50:13	1
22773	99	260	0,259	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:19:33	2
22771	99	260	0,259	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:50:14	0
22774	99	259	0,256	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:20:13	3
22772	99	259	0,258	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:45:10	1
22772	99	258	0,257	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:55:12	1
22772	99	255	0,254	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	19:55:13	1
22772	99	254	0,253	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	00:00:14	1
22771	99	253	0,252	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:20:12	0
22772	99	252	0,251	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	00:35:13	1
22771	99	252	0,251	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	20:29:26	0
22774	99	251	0,250	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	20:35:13	3
22774	99	250	0,249	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:40:12	3
22772	99	250	0,249	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	00:11:08	1
22773	99	249	0,248	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	19:45:13	2
22773	99	249	0,248	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	00:30:12	2
22774	99	247	0,246	cyclictest	16450	-21	kworker/u16:2+efi_rts_wq	23:04:53	3
22774	99	246	0,245	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	22:05:10	3
22772	99	246	0,245	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	21:55:14	1
22771	99	241	0,240	cyclictest	31303	-21	kworker/u16:1+efi_rts_wq	23:30:13	0
22774	99	239	0,238	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	00:10:13	3
22773	99	239	0,238	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	20:25:12	2
22771	99	239	0,238	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	20:10:11	0
22774	99	238	0,237	cyclictest	16450	-21	kworker/u16:2+efi_rts_wq	22:55:15	3
22772	99	238	0,237	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:25:14	1
22773	99	235	0,234	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	23:19:55	2
22771	99	234	0,233	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	22:35:10	0
22774	99	233	0,232	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	19:45:13	3
22773	99	233	0,232	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	22:09:43	2
22773	99	233	0,232	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	22:00:13	2
22772	99	233	0,231	cyclictest	16450	-21	kworker/u16:2+efi_rts_wq	22:50:12	1
22772	99	232	0,231	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	20:59:30	1
22774	99	229	0,228	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	21:55:14	3
22771	99	228	0,227	cyclictest	9502	-21	kworker/u16:0+efi_rts_wq	19:30:13	0
22771	99	228	0,227	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	23:25:14	0
22773	99	224	0,223	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	21:25:13	2
22772	99	223	0,222	cyclictest	16450	-21	kworker/u16:2+efi_rts_wq	22:59:51	1
22771	99	222	0,221	cyclictest	1279	-21	kworker/u16:3+efi_rts_wq	19:25:10	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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