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 Jul 14, 2026 00:43:55)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
16631	2	320	312,5	sleep3	0	-21	swapper/3	19:05:53	3
16792	2	317	304,4	sleep2	0	-21	swapper/2	19:07:57	2
16723	2	315	307,5	sleep1	0	-21	swapper/1	19:07:03	1
16710	2	313	306,4	sleep0	0	-21	swapper/0	19:06:54	0
17220	99	301	0,299	cyclictest	4166	-21	kworker/u16:0+efi_rts_wq	23:50:12	1
17222	99	299	0,298	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:09:53	3
17220	99	298	0,297	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	20:25:13	1
17221	99	294	0,292	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	23:25:13	2
17220	99	294	0,293	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	21:20:14	1
17222	99	293	0,292	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	20:50:14	3
17221	99	293	0,292	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	19:45:13	2
17220	99	293	0,292	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	20:40:13	1
17220	99	292	0,291	cyclictest	11798	-21	kworker/u16:3+efi_rts_wq	23:15:13	1
17220	99	292	0,291	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	22:25:24	1
17219	99	292	0,291	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	21:45:17	0
17219	99	292	0,291	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	21:45:16	0
17222	99	291	0,290	cyclictest	28108	-21	kworker/u16:2+efi_rts_wq	22:30:12	3
17220	99	291	0,290	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	19:45:13	1
17222	99	288	0,287	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	20:29:56	3
17222	99	288	0,287	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:00:14	3
17220	99	288	0,287	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	19:14:43	1
17221	99	287	0,286	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:35:11	2
17219	99	286	0,285	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	22:20:12	0
17221	99	284	0,283	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	22:05:13	2
17222	99	280	0,279	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	19:35:13	3
17220	99	280	0,279	cyclictest	28108	-21	kworker/u16:2+efi_rts_wq	22:50:12	1
17222	99	277	0,276	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	22:15:14	3
17220	99	276	0,275	cyclictest	11798	-21	kworker/u16:3+efi_rts_wq	22:55:14	1
17220	99	276	0,275	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:45:14	1
17220	99	276	0,275	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:15:14	1
17221	99	275	0,274	cyclictest	16847	-21	kworker/u16:0+efi_rts_wq	23:00:32	2
17219	99	275	0,272	cyclictest	4166	-21	kworker/u16:0+efi_rts_wq	00:30:13	0
17221	99	274	0,273	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:20:13	2
17220	99	274	0,273	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	19:30:13	1
17222	99	273	0,272	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	19:19:44	3
17221	99	273	0,272	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	22:10:13	2
17220	99	273	0,272	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	21:25:14	1
17219	99	273	0,272	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	21:40:13	0
17219	99	273	0,272	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	21:40:12	0
17220	99	272	0,271	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:05:14	1
17220	99	270	0,269	cyclictest	16847	-21	kworker/u16:0+efi_rts_wq	23:10:13	1
17222	99	265	0,264	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:25:15	3
17221	99	265	0,264	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	19:15:13	2
17219	99	265	0,264	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:20:11	0
17219	99	265	0,264	cyclictest	11798	-21	kworker/u16:3+efi_rts_wq	23:35:12	0
17220	99	263	0,262	cyclictest	5103	-21	kworker/u16:1+efi_rts_wq	22:35:12	1
17219	99	261	0,260	cyclictest	4166	-21	kworker/u16:0+efi_rts_wq	00:35:13	0
17222	99	260	0,259	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	21:25:14	3
17222	99	260	0,259	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:45:12	3
17222	99	259	0,257	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	21:50:13	3
17221	99	258	0,257	cyclictest	16847	-21	kworker/u16:0+efi_rts_wq	23:05:13	2
17219	99	256	0,255	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:30:13	0
17222	99	255	0,254	cyclictest	16847	-21	kworker/u16:0+efi_rts_wq	23:00:13	3
17222	99	255	0,253	cyclictest	4166	-21	kworker/u16:0+efi_rts_wq	23:50:12	3
17221	99	255	0,254	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	19:10:12	2
17219	99	254	0,251	cyclictest	4166	-21	kworker/u16:0+efi_rts_wq	23:40:12	0
17221	99	253	0,252	cyclictest	11798	-21	kworker/u16:3+efi_rts_wq	23:35:13	2
17220	99	253	0,252	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	19:25:13	1
17222	99	252	0,251	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:05:15	3
17220	99	252	0,251	cyclictest	5103	-21	kworker/u16:1+efi_rts_wq	22:40:13	1
17220	99	252	0,251	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:39:58	1
17222	99	251	0,250	cyclictest	4166	-21	kworker/u16:0+efi_rts_wq	00:10:13	3
17220	99	251	0,250	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	19:59:51	1
17222	99	250	0,249	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	21:10:10	3
17222	99	247	0,246	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	20:55:00	3
17220	99	246	0,245	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	23:30:12	1
17222	99	245	0,244	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	19:10:12	3
17221	99	243	0,242	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	21:45:13	2
17221	99	243	0,242	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	21:45:13	2
17222	99	242	0,240	cyclictest	11798	-21	kworker/u16:3+efi_rts_wq	23:20:13	3
17220	99	241	0,240	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:15:44	1
17221	99	240	0,239	cyclictest	4166	-21	kworker/u16:0+efi_rts_wq	23:45:13	2
17221	99	240	0,239	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	20:25:13	2
17222	99	237	0,236	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	23:25:13	3
17222	99	237	0,236	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	20:40:13	3
17222	99	237	0,236	cyclictest	28108	-21	kworker/u16:2+efi_rts_wq	22:45:12	3
17220	99	237	0,236	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:25:15	1
17220	99	236	0,235	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	22:00:11	1
17219	99	235	0,234	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	21:05:13	0
17219	99	232	0,231	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	21:30:13	0
17221	99	231	0,230	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:15:12	2
17222	99	230	0,229	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	23:30:12	3
17219	99	229	0,228	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:15:12	0
17222	99	228	0,227	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	22:00:12	3
17221	99	228	0,227	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	19:40:14	2
17222	99	226	0,225	cyclictest	16847	-21	kworker/u16:0+efi_rts_wq	23:05:33	3
17221	99	225	0,224	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	22:00:20	2
17222	99	223	0,222	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	19:54:50	3
17222	99	223	0,222	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	21:40:13	3
17222	99	223	0,222	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	21:40:13	3
17220	99	223	0,222	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:20:11	1
17220	99	223	0,222	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	20:10:11	1
17219	99	223	0,222	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	20:24:56	0
17222	99	222	0,221	cyclictest	16847	-21	kworker/u16:0+efi_rts_wq	23:10:12	3
17220	99	222	0,221	cyclictest	29847	-21	kworker/u16:1+efi_rts_wq	00:00:13	1
17219	99	222	0,221	cyclictest	10709	-21	kworker/u16:0+efi_rts_wq	22:25:13	0
17219	99	220	0,219	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	19:50:14	0
17222	99	219	0,218	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	21:00:02	3
17221	99	219	0,218	cyclictest	4166	-21	kworker/u16:0+efi_rts_wq	23:55:14	2
17219	99	218	0,217	cyclictest	29356	-21	kworker/u16:3+efi_rts_wq	20:50:14	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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