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 Sun Jul 26, 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
9746	2	325	318,5	sleep3	0	-21	swapper/3	07:08:19	3
9661	2	325	319,4	sleep0	0	-21	swapper/0	07:07:11	0
9531	2	317	304,4	sleep1	0	-21	swapper/1	07:05:32	1
9700	2	315	307,5	sleep2	0	-21	swapper/2	07:07:42	2
10143	99	302	0,299	cyclictest	11657	-21	kworker/u16:3+efi_rts_wq	11:15:14	0
10146	99	299	0,298	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:15:13	3
10146	99	295	0,294	cyclictest	30154	-21	kworker/u16:1+efi_rts_wq	10:45:12	3
10145	99	295	0,294	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:15:00	2
10146	99	294	0,293	cyclictest	28652	-21	kworker/u16:0+efi_rts_wq	11:45:14	3
10144	99	294	0,293	cyclictest	9136	-21	kworker/u16:2+efi_rts_wq	11:07:48	1
10144	99	294	0,293	cyclictest	861	-21	kworker/u16:2+efi_rts_wq	11:50:14	1
10144	99	294	0,293	cyclictest	30154	-21	kworker/u16:1+efi_rts_wq	09:40:14	1
10145	99	292	0,291	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	07:45:11	2
10144	99	292	0,291	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:05:11	1
10146	99	289	0,288	cyclictest	11657	-21	kworker/u16:3+efi_rts_wq	11:10:15	3
10144	99	289	0,288	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	09:00:13	1
10144	99	288	0,287	cyclictest	30154	-21	kworker/u16:1+efi_rts_wq	10:00:14	1
10144	99	288	0,287	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:40:13	1
10146	99	287	0,286	cyclictest	11657	-21	kworker/u16:3+efi_rts_wq	11:25:14	3
10145	99	287	0,286	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:40:12	2
10146	99	286	0,285	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	08:50:12	3
10146	99	286	0,285	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:40:13	3
10144	99	286	0,285	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:00:13	1
10143	99	286	0,285	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	08:50:12	0
10146	99	285	0,284	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:45:14	3
10144	99	285	0,284	cyclictest	30154	-21	kworker/u16:1+efi_rts_wq	10:10:12	1
10143	99	284	0,283	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	08:07:15	0
10143	99	283	0,282	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	08:15:13	0
10145	99	282	0,281	cyclictest	28652	-21	kworker/u16:0+efi_rts_wq	12:10:12	2
10143	99	281	0,280	cyclictest	28652	-21	kworker/u16:0+efi_rts_wq	12:15:15	0
10143	99	281	0,280	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:52:45	0
10146	99	280	0,279	cyclictest	11657	-21	kworker/u16:3+efi_rts_wq	11:20:12	3
10143	99	280	0,279	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:37:42	0
10144	99	279	0,278	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:20:11	1
10146	99	277	0,276	cyclictest	11657	-21	kworker/u16:3+efi_rts_wq	11:30:12	3
10145	99	277	0,276	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	07:27:09	2
10144	99	277	0,276	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:35:13	1
10144	99	276	0,273	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:45:11	1
10143	99	275	0,274	cyclictest	11657	-21	kworker/u16:3+efi_rts_wq	11:30:12	0
10143	99	274	0,273	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	07:17:07	0
10146	99	273	0,272	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:40:14	3
10145	99	273	0,272	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	09:12:28	2
10145	99	273	0,272	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:55:16	2
10144	99	273	0,272	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:50:13	1
10143	99	272	0,271	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:35:13	0
10144	99	271	0,270	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	07:57:13	1
10146	99	270	0,269	cyclictest	30154	-21	kworker/u16:1+efi_rts_wq	10:12:37	3
10146	99	269	0,268	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	07:35:13	3
10146	99	269	0,268	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:20:13	3
10145	99	269	0,268	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:40:14	2
10144	99	269	0,268	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:32:21	1
10146	99	268	0,267	cyclictest	30154	-21	kworker/u16:1+efi_rts_wq	09:32:31	3
10145	99	267	0,265	cyclictest	11657	-21	kworker/u16:3+efi_rts_wq	11:35:13	2
10144	99	267	0,266	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:15:13	1
10143	99	264	0,263	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:32:09	0
10144	99	263	0,262	cyclictest	5738	-21	kworker/u16:1+efi_rts_wq	12:28:02	1
10144	99	262	0,261	cyclictest	5738	-21	kworker/u16:1+efi_rts_wq	12:38:03	1
10143	99	262	0,261	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:25:14	0
10143	99	262	0,261	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:30:15	0
10143	99	261	0,260	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:57:25	0
10146	99	260	0,259	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	08:25:14	3
10143	99	260	0,259	cyclictest	16816	-21	kworker/u16:1+efi_rts_wq	11:37:54	0
10146	99	259	0,258	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:50:13	3
10145	99	259	0,258	cyclictest	30154	-21	kworker/u16:1+efi_rts_wq	09:42:33	2
10145	99	259	0,258	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:05:11	2
10143	99	259	0,258	cyclictest	28652	-21	kworker/u16:0+efi_rts_wq	12:20:12	0
10144	99	256	0,255	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:55:16	1
10144	99	255	0,254	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:30:10	1
10145	99	254	0,253	cyclictest	9136	-21	kworker/u16:2+efi_rts_wq	10:55:14	2
10143	99	254	0,253	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:47:34	0
10145	99	253	0,252	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:20:12	2
10143	99	253	0,252	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:27:40	0
10144	99	251	0,250	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	07:37:10	1
10143	99	251	0,250	cyclictest	30154	-21	kworker/u16:1+efi_rts_wq	10:22:40	0
10143	99	250	0,249	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	07:55:14	0
10146	99	249	0,248	cyclictest	28652	-21	kworker/u16:0+efi_rts_wq	12:05:14	3
10146	99	249	0,248	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:05:14	3
10145	99	247	0,246	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	08:05:13	2
10144	99	247	0,246	cyclictest	28652	-21	kworker/u16:0+efi_rts_wq	11:55:12	1
10144	99	246	0,245	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:20:12	1
10144	99	244	0,243	cyclictest	861	-21	kworker/u16:2+efi_rts_wq	12:00:13	1
10145	99	243	0,242	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:20:12	2
10144	99	243	0,242	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	09:55:13	1
10145	99	242	0,241	cyclictest	28652	-21	kworker/u16:0+efi_rts_wq	12:30:12	2
10146	99	241	0,240	cyclictest	5738	-21	kworker/u16:1+efi_rts_wq	12:35:15	3
10144	99	238	0,237	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:25:18	1
10146	99	237	0,236	cyclictest	30154	-21	kworker/u16:1+efi_rts_wq	09:50:13	3
10144	99	235	0,232	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:10:13	1
10146	99	234	0,232	cyclictest	5738	-21	kworker/u16:1+efi_rts_wq	12:25:14	3
10144	99	234	0,233	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:10:13	1
10146	99	233	0,232	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:50:13	3
10143	99	231	0,229	cyclictest	9136	-21	kworker/u16:2+efi_rts_wq	11:05:12	0
10146	99	230	0,229	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	11:00:13	3
10146	99	230	0,229	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	08:45:12	3
10145	99	228	0,227	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	10:35:13	2
10143	99	228	0,227	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:20:13	0
10146	99	224	0,223	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:12:06	3
10143	99	223	0,222	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	07:25:13	0
10146	99	221	0,220	cyclictest	8487	-21	kworker/u16:3+efi_rts_wq	08:35:14	3
10144	99	219	0,218	cyclictest	24844	-21	kworker/u16:0+efi_rts_wq	07:42:11	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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