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 Oct 14, 2025 00:43:53)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
19378	2	319	304,5	sleep2	0	-21	swapper/2	19:06:09	2
19456	2	318	303,5	sleep3	0	-21	swapper/3	19:07:09	3
19356	2	316	308,5	sleep0	0	-21	swapper/0	19:05:50	0
19352	2	316	303,10	sleep1	0	-21	swapper/1	19:05:48	1
19947	99	295	0,294	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	21:40:12	2
19948	99	292	0,291	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	22:55:17	3
19948	99	291	0,290	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	21:25:13	3
19947	99	291	0,290	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	20:15:13	2
19946	99	289	0,288	cyclictest	7782	-21	kworker/u16:3+efi_rts_wq	00:00:52	1
19946	99	289	0,288	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	19:15:14	1
19946	99	289	0,286	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:10:12	1
19946	99	288	0,287	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	21:45:15	1
19948	99	287	0,286	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	23:30:15	3
19948	99	287	0,286	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	19:55:07	3
19946	99	287	0,286	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:20:16	1
19946	99	287	0,286	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	19:50:17	1
19946	99	287	0,286	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	23:10:13	1
19948	99	285	0,284	cyclictest	28901	-21	kworker/u16:3+efi_rts_wq	19:30:15	3
19948	99	284	0,283	cyclictest	28901	-21	kworker/u16:3+efi_rts_wq	19:25:13	3
19947	99	284	0,283	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	19:40:14	2
19946	99	284	0,283	cyclictest	29126	-21	kworker/u16:0+efi_rts_wq	23:40:13	1
19948	99	283	0,282	cyclictest	29126	-21	kworker/u16:0+efi_rts_wq	23:50:14	3
19948	99	283	0,282	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	20:10:17	3
19948	99	282	0,281	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	19:50:17	3
19948	99	281	0,277	cyclictest	7782	-21	kworker/u16:3+efi_rts_wq	00:05:13	3
19948	99	280	0,279	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	22:05:30	3
19946	99	280	0,279	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:50:39	1
19946	99	279	0,278	cyclictest	7782	-21	kworker/u16:3+efi_rts_wq	23:55:12	1
19948	99	278	0,277	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	20:20:17	3
19947	99	277	0,276	cyclictest	29126	-21	kworker/u16:0+efi_rts_wq	23:25:15	2
19946	99	277	0,276	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	20:50:14	1
19948	99	275	0,274	cyclictest	28037	-21	kworker/u16:1+efi_rts_wq	00:30:57	3
19946	99	275	0,274	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	22:15:16	1
19946	99	274	0,273	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	21:55:28	1
19945	99	274	0,273	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	23:20:13	0
19946	99	272	0,271	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	20:30:14	1
19946	99	271	0,269	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:45:14	1
19945	99	271	0,270	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:30:13	0
19946	99	270	0,269	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	20:05:08	1
19945	99	268	0,267	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	22:05:13	0
19946	99	267	0,266	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:00:14	1
19945	99	267	0,266	cyclictest	28901	-21	kworker/u16:3+efi_rts_wq	19:20:14	0
19948	99	266	0,265	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	20:05:15	3
19948	99	265	0,264	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	21:50:15	3
19948	99	265	0,262	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	22:15:15	3
19947	99	265	0,264	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	20:10:17	2
19947	99	264	0,263	cyclictest	7782	-21	kworker/u16:3+efi_rts_wq	00:25:13	2
19947	99	264	0,263	cyclictest	29126	-21	kworker/u16:0+efi_rts_wq	23:40:13	2
19947	99	264	0,262	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	20:00:14	2
19948	99	263	0,262	cyclictest	29126	-21	kworker/u16:0+efi_rts_wq	23:25:15	3
19947	99	262	0,261	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	20:30:13	2
19947	99	261	0,260	cyclictest	14693	-21	kworker/u16:0+efi_rts_wq	00:15:13	2
19947	99	257	0,256	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	22:25:13	2
19947	99	255	0,254	cyclictest	14693	-21	kworker/u16:0+efi_rts_wq	00:10:13	2
19947	99	254	0,253	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	19:15:15	2
19946	99	254	0,253	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	23:15:13	1
19946	99	254	0,253	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	23:00:41	1
19948	99	253	0,252	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	21:55:13	3
19946	99	252	0,251	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	20:35:15	1
19948	99	250	0,249	cyclictest	14693	-21	kworker/u16:0+efi_rts_wq	00:20:14	3
19948	99	250	0,248	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	21:00:08	3
19946	99	247	0,246	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	21:30:11	1
19946	99	247	0,246	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	21:05:12	1
19946	99	247	0,245	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:30:35	1
19948	99	246	0,245	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	19:35:14	3
19947	99	246	0,245	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:00:14	2
19947	99	245	0,244	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:50:15	2
19947	99	244	0,243	cyclictest	7782	-21	kworker/u16:3+efi_rts_wq	23:55:13	2
19945	99	244	0,243	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:15:33	0
19948	99	243	0,242	cyclictest	14693	-21	kworker/u16:0+efi_rts_wq	00:15:13	3
19948	99	242	0,241	cyclictest	29126	-21	kworker/u16:0+efi_rts_wq	23:35:13	3
19948	99	239	0,238	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	23:15:14	3
19947	99	238	0,237	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	20:45:09	2
19948	99	237	0,236	cyclictest	28901	-21	kworker/u16:3+efi_rts_wq	19:10:14	3
19947	99	237	0,236	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:10:31	2
19945	99	237	0,236	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	20:25:15	0
19946	99	236	0,235	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	20:15:10	1
19946	99	235	0,234	cyclictest	28901	-21	kworker/u16:3+efi_rts_wq	19:25:13	1
19945	99	234	0,233	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	20:35:14	0
19946	99	233	0,232	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	23:20:13	1
19946	99	233	0,232	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:40:14	1
19946	99	232	0,231	cyclictest	14693	-21	kworker/u16:0+efi_rts_wq	00:20:55	1
19948	99	231	0,230	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	23:20:13	3
19947	99	230	0,229	cyclictest	14693	-21	kworker/u16:0+efi_rts_wq	00:30:13	2
19946	99	230	0,229	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	21:40:26	1
19946	99	229	0,228	cyclictest	11570	-21	kworker/u16:1+efi_rts_wq	22:25:14	1
19947	99	224	0,223	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:20:16	2
19946	99	224	0,223	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	19:45:16	1
19947	99	223	0,222	cyclictest	7782	-21	kworker/u16:3+efi_rts_wq	00:35:13	2
19945	99	223	0,222	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:35:12	0
19947	99	222	0,221	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	21:30:24	2
19946	99	219	0,218	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	21:20:22	1
19946	99	217	0,216	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	19:55:14	1
19945	99	217	0,216	cyclictest	14827	-21	kworker/u16:2+efi_rts_wq	23:00:13	0
19948	99	215	0,214	cyclictest	17544	-21	kworker/u16:2+efi_rts_wq	21:05:12	3
19947	99	215	0,214	cyclictest	29126	-21	kworker/u16:0+efi_rts_wq	23:30:46	2
19946	99	215	0,214	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	21:35:12	1
19946	99	215	0,214	cyclictest	14693	-21	kworker/u16:0+efi_rts_wq	00:30:13	1
19948	99	214	0,213	cyclictest	2892	-21	kworker/u16:3+efi_rts_wq	22:45:13	3
19948	99	213	0,212	cyclictest	10384	-21	kworker/u16:0+efi_rts_wq	20:15:13	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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