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 12, 2026 12:43:54)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
18444	2	315	309,4	sleep2	0	-21	swapper/2	07:08:53	2
18225	2	315	307,5	sleep3	0	-21	swapper/3	07:06:06	3
18191	2	315	308,5	sleep1	0	-21	swapper/1	07:05:38	1
18279	2	313	307,4	sleep0	0	-21	swapper/0	07:06:46	0
18796	99	302	0,301	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:10:14	0
18797	99	300	0,297	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:10:13	1
18798	99	298	0,297	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	08:25:13	2
18797	99	297	0,296	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	09:00:14	1
18797	99	296	0,295	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	07:37:17	1
18796	99	296	0,295	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:32:28	0
18796	99	296	0,295	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	07:27:15	0
18797	99	295	0,292	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	09:10:11	1
18796	99	295	0,294	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	08:40:12	0
18797	99	294	0,293	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	08:35:12	1
18799	99	292	0,291	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:35:14	3
18799	99	292	0,291	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:10:11	3
18796	99	291	0,290	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	11:17:59	0
18796	99	291	0,290	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:05:12	0
18799	99	290	0,289	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	07:15:01	3
18797	99	290	0,289	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	12:30:11	1
18797	99	290	0,289	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	07:40:14	1
18796	99	289	0,288	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:10:11	0
18797	99	288	0,287	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	10:25:11	1
18799	99	285	0,284	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:30:14	3
18797	99	284	0,283	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	12:35:13	1
18796	99	284	0,283	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:45:13	0
18799	99	283	0,282	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	08:15:11	3
18796	99	283	0,282	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	12:08:08	0
18797	99	281	0,280	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:50:12	1
18796	99	280	0,278	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:05:14	0
18797	99	279	0,278	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	07:25:11	1
18799	99	277	0,276	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:15:13	3
18797	99	277	0,276	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	07:30:13	1
18796	99	277	0,276	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:15:13	0
18797	99	276	0,275	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	07:17:13	1
18796	99	276	0,274	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:50:13	0
18796	99	275	0,274	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	12:25:13	0
18796	99	275	0,274	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	12:00:13	0
18799	99	274	0,273	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:25:12	3
18799	99	274	0,273	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:10:13	3
18799	99	272	0,270	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	07:50:13	3
18799	99	271	0,270	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	12:18:10	3
18799	99	271	0,270	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	07:55:12	3
18797	99	271	0,269	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:45:13	1
18797	99	271	0,269	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:45:13	1
18799	99	270	0,269	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:45:12	3
18797	99	270	0,269	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	11:55:12	1
18797	99	270	0,269	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:30:13	1
18797	99	269	0,268	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	11:30:13	1
18796	99	269	0,268	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:20:12	0
18797	99	268	0,267	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:35:13	1
18796	99	267	0,266	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:20:14	0
18799	99	266	0,265	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	09:47:42	3
18799	99	265	0,264	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	10:15:12	3
18797	99	265	0,264	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:00:12	1
18799	99	262	0,261	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	12:05:13	3
18798	99	261	0,260	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:25:13	2
18796	99	261	0,260	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	12:20:12	0
18796	99	260	0,259	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	10:25:11	0
18796	99	260	0,259	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:30:13	0
18796	99	258	0,257	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	10:40:12	0
18797	99	257	0,256	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	12:13:09	1
18799	99	256	0,255	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:07:45	3
18796	99	255	0,254	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:40:13	0
18799	99	254	0,253	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	09:22:38	3
18799	99	253	0,252	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	12:00:13	3
18797	99	253	0,252	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:50:14	1
18797	99	253	0,251	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:20:13	1
18797	99	252	0,251	cyclictest	2308	-21	kworker/u16:1+efi_rts_wq	07:20:13	1
18797	99	252	0,251	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	09:20:14	1
18796	99	251	0,250	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	08:05:13	0
18796	99	251	0,250	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:35:12	0
18796	99	251	0,250	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	07:35:12	0
18799	99	248	0,247	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	12:20:11	3
18797	99	247	0,246	cyclictest	2308	-21	kworker/u16:1+efi_rts_wq	07:10:14	1
18797	99	242	0,241	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	11:07:57	1
18796	99	242	0,241	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:55:14	0
18799	99	240	0,239	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	10:57:55	3
18797	99	237	0,236	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:12:24	1
18797	99	236	0,235	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	12:15:12	1
18797	99	234	0,233	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	11:25:12	1
18796	99	234	0,233	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	07:52:20	0
18796	99	234	0,233	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	07:45:12	0
18796	99	233	0,231	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:00:12	0
18799	99	230	0,229	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:38:03	3
18797	99	230	0,229	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	08:50:14	1
18796	99	227	0,226	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	10:00:14	0
18799	99	226	0,225	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	11:40:12	3
18797	99	226	0,225	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:50:13	1
18796	99	222	0,220	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	11:05:13	0
18797	99	220	0,219	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:45:13	1
18799	99	216	0,215	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:30:13	3
18797	99	215	0,214	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	09:05:12	1
18797	99	214	0,213	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	09:55:12	1
18796	99	213	0,212	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	10:52:53	0
18799	99	211	0,210	cyclictest	20435	-21	kworker/u16:3+efi_rts_wq	11:25:12	3
18797	99	211	0,210	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	08:55:14	1
18799	99	208	0,207	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	09:12:36	3
18796	99	205	0,204	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:22:59	0
18799	99	203	0,202	cyclictest	17253	-21	kworker/u16:0+efi_rts_wq	11:48:05	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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