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 Nov 22, 2025 12:43:55)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3218	2	319	305,5	sleep1	0	-21	swapper/1	07:08:40	1
3322	2	318	303,5	sleep0	0	-21	swapper/0	07:09:58	0
3204	2	317	303,5	sleep2	0	-21	swapper/2	07:08:29	2
1489	2	315	307,5	sleep3	0	-21	swapper/3	07:05:09	3
3589	99	300	0,298	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	10:25:11	3
3586	99	300	0,299	cyclictest	12583	-21	kworker/u16:1+efi_rts_wq	11:15:16	0
3587	99	299	0,296	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	10:15:14	1
3586	99	299	0,298	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:52:50	0
3589	99	298	0,297	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	08:25:14	3
3588	99	298	0,297	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	08:55:13	2
3588	99	297	0,296	cyclictest	19994	-21	kworker/u16:1+efi_rts_wq	12:00:12	2
3587	99	297	0,295	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	11:10:13	1
3589	99	295	0,294	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	10:00:14	3
3588	99	295	0,294	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	08:35:16	2
3586	99	294	0,291	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	08:25:13	0
3589	99	293	0,292	cyclictest	19994	-21	kworker/u16:1+efi_rts_wq	11:48:20	3
3587	99	293	0,291	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	08:15:13	1
3589	99	292	0,291	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	07:20:16	3
3587	99	292	0,290	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:25:14	1
3589	99	291	0,290	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:47:49	3
3589	99	291	0,289	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	10:40:14	3
3586	99	291	0,290	cyclictest	992	-21	kworker/u16:0+efi_rts_wq	11:00:12	0
3586	99	291	0,290	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	07:55:14	0
3588	99	289	0,288	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:10:14	2
3588	99	288	0,287	cyclictest	30651	-21	kworker/u16:2+efi_rts_wq	10:55:14	2
3588	99	286	0,285	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	10:28:05	2
3588	99	285	0,284	cyclictest	19994	-21	kworker/u16:1+efi_rts_wq	12:30:14	2
3588	99	285	0,284	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:35:14	2
3587	99	285	0,284	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	08:07:40	1
3586	99	285	0,284	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	09:00:16	0
3586	99	284	0,283	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:50:18	0
3587	99	283	0,280	cyclictest	992	-21	kworker/u16:0+efi_rts_wq	11:05:15	1
3588	99	281	0,280	cyclictest	992	-21	kworker/u16:0+efi_rts_wq	11:00:12	2
3586	99	281	0,280	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	09:10:13	0
3588	99	280	0,279	cyclictest	15374	-21	kworker/u16:2+efi_rts_wq	11:28:17	2
3587	99	280	0,279	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	12:10:15	1
3589	99	279	0,278	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	12:18:25	3
3587	99	278	0,277	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:12:32	1
3586	99	278	0,277	cyclictest	28107	-21	kworker/u16:1+efi_rts_wq	10:50:13	0
3587	99	276	0,275	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:50:18	1
3589	99	275	0,274	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	08:55:13	3
3587	99	275	0,274	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:40:15	1
3586	99	275	0,274	cyclictest	15374	-21	kworker/u16:2+efi_rts_wq	11:30:14	0
3588	99	274	0,273	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:20:15	2
3589	99	273	0,272	cyclictest	28107	-21	kworker/u16:1+efi_rts_wq	10:50:13	3
3589	99	272	0,271	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	11:25:14	3
3589	99	272	0,271	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	08:05:15	3
3589	99	272	0,269	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	10:13:03	3
3587	99	272	0,271	cyclictest	23195	-21	kworker/u16:3+efi_rts_wq	10:38:06	1
3589	99	271	0,270	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:40:13	3
3588	99	271	0,270	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	10:03:01	2
3587	99	271	0,269	cyclictest	28107	-21	kworker/u16:1+efi_rts_wq	10:45:16	1
3587	99	271	0,269	cyclictest	28107	-21	kworker/u16:1+efi_rts_wq	10:45:15	1
3586	99	270	0,269	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	11:08:14	0
3589	99	269	0,268	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	09:30:12	3
3589	99	268	0,267	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	10:20:13	3
3589	99	267	0,265	cyclictest	15374	-21	kworker/u16:2+efi_rts_wq	11:30:13	3
3588	99	263	0,262	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	10:23:05	2
3586	99	263	0,262	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:00:14	0
3589	99	262	0,261	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	11:53:20	3
3588	99	261	0,260	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:25:14	2
3586	99	261	0,260	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	12:15:13	0
3586	99	260	0,259	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:30:14	0
3588	99	259	0,258	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:50:14	2
3586	99	259	0,258	cyclictest	28107	-21	kworker/u16:1+efi_rts_wq	10:45:16	0
3586	99	259	0,258	cyclictest	28107	-21	kworker/u16:1+efi_rts_wq	10:45:15	0
3589	99	258	0,257	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	09:15:16	3
3586	99	258	0,257	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:10:15	0
3588	99	257	0,256	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	11:35:14	2
3586	99	257	0,256	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	11:25:14	0
3586	99	257	0,256	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:20:15	0
3588	99	256	0,255	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	07:45:18	2
3588	99	256	0,255	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	09:15:15	2
3589	99	255	0,254	cyclictest	19994	-21	kworker/u16:1+efi_rts_wq	12:35:15	3
3588	99	255	0,254	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	07:57:39	2
3586	99	254	0,253	cyclictest	12583	-21	kworker/u16:1+efi_rts_wq	11:20:13	0
3587	99	251	0,250	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	09:50:15	1
3588	99	250	0,249	cyclictest	23195	-21	kworker/u16:3+efi_rts_wq	10:35:14	2
3586	99	248	0,247	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	09:55:14	0
3589	99	246	0,245	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:32:45	3
3588	99	245	0,244	cyclictest	19994	-21	kworker/u16:1+efi_rts_wq	12:20:13	2
3589	99	244	0,243	cyclictest	19994	-21	kworker/u16:1+efi_rts_wq	12:30:14	3
3586	99	243	0,242	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:10:14	0
3587	99	242	0,241	cyclictest	19994	-21	kworker/u16:1+efi_rts_wq	11:40:14	1
3587	99	242	0,241	cyclictest	15374	-21	kworker/u16:2+efi_rts_wq	11:23:15	1
3586	99	242	0,241	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	07:35:13	0
3587	99	241	0,240	cyclictest	27870	-21	kworker/u16:1+efi_rts_wq	09:20:13	1
3587	99	240	0,239	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	09:55:15	1
3589	99	238	0,237	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	12:25:14	3
3589	99	238	0,237	cyclictest	23195	-21	kworker/u16:3+efi_rts_wq	10:35:14	3
3589	99	238	0,237	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:50:13	3
3588	99	236	0,235	cyclictest	5026	-21	kworker/u16:3+efi_rts_wq	12:28:27	2
3588	99	236	0,235	cyclictest	23195	-21	kworker/u16:3+efi_rts_wq	10:40:14	2
3588	99	236	0,234	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	09:25:13	2
3587	99	235	0,234	cyclictest	19994	-21	kworker/u16:1+efi_rts_wq	12:00:12	1
3587	99	234	0,233	cyclictest	23195	-21	kworker/u16:3+efi_rts_wq	10:40:14	1
3587	99	234	0,233	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	10:08:01	1
3586	99	234	0,233	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	10:30:15	0
3589	99	233	0,232	cyclictest	15461	-21	kworker/u16:0+efi_rts_wq	08:12:41	3
3588	99	233	0,232	cyclictest	19994	-21	kworker/u16:1+efi_rts_wq	11:50:14	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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