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 Wed Apr 29, 2026 00:43:56)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2067	2	333	311,5	sleep1	0	-21	swapper/1	19:06:57	1
1984	2	323	317,4	sleep2	0	-21	swapper/2	19:05:54	2
2010	2	318	311,5	sleep3	0	-21	swapper/3	19:06:15	3
2158	2	317	310,5	sleep0	0	-21	swapper/0	19:08:08	0
3851	99	313	0,312	cyclictest	27375	-21	kworker/u16:3+efi_rts_wq	22:19:39	3
3845	99	312	0,311	cyclictest	16172	-21	kworker/u16:1+efi_rts_wq	22:05:13	2
3842	99	312	0,311	cyclictest	13350	-21	kworker/u16:2+efi_rts_wq	19:40:14	1
3840	99	312	0,311	cyclictest	22828	-21	kworker/u16:3+efi_rts_wq	19:50:13	0
3851	99	311	0,310	cyclictest	4519	-21	kworker/u16:0+efi_rts_wq	23:45:13	3
3842	99	310	0,309	cyclictest	29790	-21	kworker/u16:1+efi_rts_wq	22:30:14	1
3842	99	310	0,309	cyclictest	21695	-21	kworker/u16:1+efi_rts_wq	00:15:14	1
3840	99	310	0,309	cyclictest	9047	-21	kworker/u16:0+efi_rts_wq	21:40:14	0
3851	99	309	0,308	cyclictest	18432	-21	kworker/u16:0+efi_rts_wq	23:15:13	3
3851	99	309	0,308	cyclictest	11367	-21	kworker/u16:1+efi_rts_wq	20:40:14	3
3851	99	309	0,307	cyclictest	13350	-21	kworker/u16:2+efi_rts_wq	20:10:13	3
3842	99	309	0,308	cyclictest	29295	-21	kworker/u16:2+efi_rts_wq	00:20:13	1
3851	99	308	0,307	cyclictest	20813	-21	kworker/u16:0+efi_rts_wq	22:09:37	3
3842	99	308	0,307	cyclictest	4089	-21	kworker/u16:1+efi_rts_wq	20:24:14	1
3840	99	307	0,305	cyclictest	24184	-21	kworker/u16:1+efi_rts_wq	23:20:10	0
3842	99	306	0,305	cyclictest	32502	-21	kworker/u16:2+efi_rts_wq	21:25:14	1
3851	99	305	0,304	cyclictest	7824	-21	kworker/u16:3+efi_rts_wq	22:50:14	3
3845	99	305	0,304	cyclictest	9047	-21	kworker/u16:0+efi_rts_wq	21:55:13	2
3842	99	305	0,304	cyclictest	13350	-21	kworker/u16:2+efi_rts_wq	20:05:13	1
3851	99	304	0,303	cyclictest	25056	-21	kworker/u16:2+efi_rts_wq	22:24:39	3
3851	99	304	0,303	cyclictest	10604	-21	kworker/u16:1+efi_rts_wq	23:00:13	3
3842	99	304	0,303	cyclictest	13350	-21	kworker/u16:2+efi_rts_wq	20:35:12	1
3845	99	303	0,302	cyclictest	14521	-21	kworker/u16:0+efi_rts_wq	00:10:13	2
3851	99	302	0,301	cyclictest	32247	-21	kworker/u16:3+efi_rts_wq	19:30:12	3
3851	99	302	0,301	cyclictest	22828	-21	kworker/u16:3+efi_rts_wq	19:55:13	3
3845	99	302	0,301	cyclictest	18432	-21	kworker/u16:0+efi_rts_wq	23:15:14	2
3840	99	301	0,300	cyclictest	27530	-21	kworker/u16:0+efi_rts_wq	20:00:12	0
3851	99	300	0,299	cyclictest	32247	-21	kworker/u16:3+efi_rts_wq	19:20:13	3
3851	99	300	0,299	cyclictest	25232	-21	kworker/u16:3+efi_rts_wq	22:10:13	3
3840	99	300	0,299	cyclictest	32247	-21	kworker/u16:3+efi_rts_wq	19:15:12	0
3842	99	298	0,297	cyclictest	25232	-21	kworker/u16:3+efi_rts_wq	21:35:12	1
3840	99	298	0,297	cyclictest	27375	-21	kworker/u16:3+efi_rts_wq	22:20:13	0
3851	99	297	0,296	cyclictest	30156	-21	kworker/u16:1+efi_rts_wq	21:29:28	3
3851	99	297	0,296	cyclictest	29790	-21	kworker/u16:1+efi_rts_wq	22:30:14	3
3851	99	297	0,296	cyclictest	22831	-21	kworker/u16:2+efi_rts_wq	21:00:13	3
3851	99	297	0,296	cyclictest	20405	-21	kworker/u16:1+efi_rts_wq	19:44:08	3
3840	99	297	0,296	cyclictest	18042	-21	kworker/u16:0+efi_rts_wq	19:45:13	0
3851	99	295	0,294	cyclictest	24184	-21	kworker/u16:1+efi_rts_wq	23:59:58	3
3845	99	295	0,294	cyclictest	27375	-21	kworker/u16:3+efi_rts_wq	22:20:12	2
3842	99	294	0,292	cyclictest	32123	-21	kworker/u16:0+efi_rts_wq	22:35:13	1
3840	99	293	0,292	cyclictest	10604	-21	kworker/u16:1+efi_rts_wq	22:49:44	0
3851	99	290	0,289	cyclictest	11367	-21	kworker/u16:1+efi_rts_wq	20:50:12	3
3845	99	290	0,289	cyclictest	29790	-21	kworker/u16:1+efi_rts_wq	22:40:14	2
3845	99	290	0,289	cyclictest	13350	-21	kworker/u16:2+efi_rts_wq	20:09:12	2
3842	99	289	0,288	cyclictest	25232	-21	kworker/u16:3+efi_rts_wq	22:00:12	1
3851	99	288	0,287	cyclictest	6752	-21	kworker/u16:0+efi_rts_wq	20:45:14	3
3842	99	288	0,287	cyclictest	27530	-21	kworker/u16:0+efi_rts_wq	20:15:12	1
3842	99	288	0,287	cyclictest	16172	-21	kworker/u16:1+efi_rts_wq	21:55:13	1
3840	99	288	0,287	cyclictest	13350	-21	kworker/u16:2+efi_rts_wq	19:40:14	0
3851	99	286	0,284	cyclictest	18432	-21	kworker/u16:0+efi_rts_wq	23:10:14	3
3842	99	283	0,279	cyclictest	6752	-21	kworker/u16:0+efi_rts_wq	20:25:14	1
3840	99	282	0,281	cyclictest	6035	-21	kworker/u16:0+efi_rts_wq	19:20:12	0
3851	99	281	0,280	cyclictest	2989	-21	kworker/u16:1+efi_rts_wq	19:10:14	3
3851	99	281	0,280	cyclictest	29295	-21	kworker/u16:2+efi_rts_wq	00:04:59	3
3842	99	279	0,278	cyclictest	29295	-21	kworker/u16:2+efi_rts_wq	00:00:13	1
3840	99	277	0,276	cyclictest	29295	-21	kworker/u16:2+efi_rts_wq	23:35:13	0
3845	99	276	0,275	cyclictest	5014	-21	kworker/u16:2+efi_rts_wq	22:55:14	2
3840	99	276	0,275	cyclictest	25232	-21	kworker/u16:3+efi_rts_wq	22:00:12	0
3851	99	275	0,274	cyclictest	6752	-21	kworker/u16:0+efi_rts_wq	21:05:13	3
3840	99	275	0,274	cyclictest	32247	-21	kworker/u16:3+efi_rts_wq	19:35:16	0
3840	99	275	0,274	cyclictest	27530	-21	kworker/u16:0+efi_rts_wq	20:15:13	0
3851	99	274	0,273	cyclictest	13350	-21	kworker/u16:2+efi_rts_wq	20:30:12	3
3840	99	274	0,273	cyclictest	6752	-21	kworker/u16:0+efi_rts_wq	21:15:15	0
3851	99	271	0,270	cyclictest	29295	-21	kworker/u16:2+efi_rts_wq	00:30:14	3
3842	99	270	0,269	cyclictest	13326	-21	kworker/u16:0+efi_rts_wq	22:54:45	1
3842	99	269	0,268	cyclictest	9616	-21	kworker/u16:3+efi_rts_wq	23:55:12	1
3851	99	268	0,267	cyclictest	6752	-21	kworker/u16:0+efi_rts_wq	21:19:26	3
3842	99	267	0,266	cyclictest	29790	-21	kworker/u16:1+efi_rts_wq	22:25:13	1
3840	99	267	0,266	cyclictest	29295	-21	kworker/u16:2+efi_rts_wq	23:34:53	0
3842	99	265	0,264	cyclictest	6035	-21	kworker/u16:0+efi_rts_wq	19:25:14	1
3842	99	265	0,264	cyclictest	13350	-21	kworker/u16:2+efi_rts_wq	20:30:13	1
3845	99	264	0,263	cyclictest	10604	-21	kworker/u16:1+efi_rts_wq	23:05:13	2
3842	99	263	0,262	cyclictest	26396	-21	kworker/u16:0+efi_rts_wq	00:30:03	1
3845	99	262	0,261	cyclictest	6752	-21	kworker/u16:0+efi_rts_wq	20:39:17	2
3845	99	262	0,261	cyclictest	21695	-21	kworker/u16:1+efi_rts_wq	00:15:15	2
3842	99	261	0,260	cyclictest	25232	-21	kworker/u16:3+efi_rts_wq	21:44:31	1
3842	99	260	0,259	cyclictest	32247	-21	kworker/u16:3+efi_rts_wq	19:30:13	1
3851	99	258	0,257	cyclictest	4089	-21	kworker/u16:1+efi_rts_wq	20:20:13	3
3851	99	258	0,257	cyclictest	27530	-21	kworker/u16:0+efi_rts_wq	20:05:13	3
3842	99	257	0,256	cyclictest	22828	-21	kworker/u16:3+efi_rts_wq	19:50:13	1
3851	99	256	0,255	cyclictest	17069	-21	kworker/u16:3+efi_rts_wq	00:10:13	3
3840	99	255	0,254	cyclictest	6752	-21	kworker/u16:0+efi_rts_wq	21:10:14	0
3845	99	253	0,252	cyclictest	11367	-21	kworker/u16:1+efi_rts_wq	20:55:14	2
3842	99	253	0,252	cyclictest	13846	-21	kworker/u16:2+efi_rts_wq	21:49:32	1
3842	99	252	0,251	cyclictest	26396	-21	kworker/u16:0+efi_rts_wq	00:35:12	1
3842	99	252	0,251	cyclictest	10604	-21	kworker/u16:1+efi_rts_wq	23:00:13	1
3840	99	245	0,244	cyclictest	10604	-21	kworker/u16:1+efi_rts_wq	23:05:12	0
3845	99	244	0,243	cyclictest	26396	-21	kworker/u16:0+efi_rts_wq	00:30:14	2
3840	99	244	0,243	cyclictest	24071	-21	kworker/u16:3+efi_rts_wq	00:20:01	0
3842	99	241	0,238	cyclictest	4424	-21	kworker/u16:0+efi_rts_wq	21:30:13	1
3842	99	241	0,238	cyclictest	4424	-21	kworker/u16:0+efi_rts_wq	21:30:13	1
3851	99	239	0,238	cyclictest	29295	-21	kworker/u16:2+efi_rts_wq	23:35:13	3
3851	99	238	0,236	cyclictest	5014	-21	kworker/u16:2+efi_rts_wq	22:55:13	3
3851	99	235	0,234	cyclictest	24184	-21	kworker/u16:1+efi_rts_wq	23:50:12	3
3842	99	234	0,233	cyclictest	11367	-21	kworker/u16:1+efi_rts_wq	20:49:20	1
3845	99	233	0,232	cyclictest	20813	-21	kworker/u16:0+efi_rts_wq	22:15:14	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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