OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 50 highest latencies:

System rackcslot3s.osadl.org (updated Thu Jan 08, 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
19788	2	322	316,4	sleep1	0	-21	swapper/1	07:06:59	1
19832	2	321	307,5	sleep0	0	-21	swapper/0	07:07:34	0
20020	2	318	310,5	sleep3	0	-21	swapper/3	07:09:59	3
20289	99	316	0,315	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	09:25:13	3
19894	2	315	307,5	sleep2	0	-21	swapper/2	07:08:21	2
20289	99	312	0,311	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	08:30:14	3
20288	99	308	0,307	cyclictest	6490	-21	kworker/u16:2+efi_rts_wq	11:55:11	2
20288	99	308	0,307	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	08:55:13	2
20288	99	308	0,307	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	08:25:11	2
20289	99	307	0,305	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	10:25:13	3
20289	99	306	0,305	cyclictest	4546	-21	kworker/u16:1+efi_rts_wq	11:28:26	3
20286	99	306	0,305	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	08:55:14	0
20289	99	305	0,304	cyclictest	4546	-21	kworker/u16:1+efi_rts_wq	11:10:12	3
20289	99	304	0,302	cyclictest	4546	-21	kworker/u16:1+efi_rts_wq	11:05:14	3
20287	99	304	0,303	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	07:10:12	1
20287	99	304	0,303	cyclictest	11141	-21	kworker/u16:3+efi_rts_wq	12:30:11	1
20286	99	304	0,303	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	09:20:11	0
20288	99	303	0,302	cyclictest	11141	-21	kworker/u16:3+efi_rts_wq	12:35:13	2
20287	99	302	0,301	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	09:35:13	1
20287	99	302	0,301	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	08:15:13	1
20288	99	301	0,300	cyclictest	20259	-21	kworker/u16:0+efi_rts_wq	11:13:24	2
20286	99	301	0,300	cyclictest	8846	-21	kworker/u16:1+efi_rts_wq	12:10:11	0
20286	99	301	0,300	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	09:25:13	0
20289	99	299	0,296	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	08:00:15	3
20287	99	298	0,297	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	09:28:05	1
20289	99	297	0,296	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	08:50:12	3
20289	99	296	0,295	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	10:03:11	3
20289	99	296	0,295	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	09:10:13	3
20287	99	296	0,295	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	07:45:12	1
20286	99	296	0,295	cyclictest	20259	-21	kworker/u16:0+efi_rts_wq	11:45:13	0
20286	99	294	0,293	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	08:00:15	0
20289	99	293	0,291	cyclictest	8846	-21	kworker/u16:1+efi_rts_wq	12:28:38	3
20288	99	293	0,292	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	09:40:12	2
20286	99	293	0,292	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	09:05:12	0
20289	99	292	0,291	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	07:35:11	3
20288	99	292	0,291	cyclictest	8846	-21	kworker/u16:1+efi_rts_wq	12:10:12	2
20289	99	291	0,290	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	08:20:12	3
20288	99	291	0,290	cyclictest	4546	-21	kworker/u16:1+efi_rts_wq	10:50:12	2
20287	99	290	0,289	cyclictest	20259	-21	kworker/u16:0+efi_rts_wq	11:35:12	1
20289	99	289	0,288	cyclictest	6490	-21	kworker/u16:2+efi_rts_wq	11:53:31	3
20286	99	289	0,288	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	08:17:53	0
20287	99	288	0,287	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	08:02:50	1
20287	99	287	0,286	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	07:55:11	1
20286	99	287	0,286	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	08:10:08	0
20288	99	286	0,285	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	10:35:12	2
20286	99	286	0,285	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	09:00:12	0
20286	99	284	0,283	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	07:35:10	0
20286	99	283	0,282	cyclictest	16252	-21	kworker/u16:3+efi_rts_wq	08:52:58	0
20289	99	282	0,281	cyclictest	8846	-21	kworker/u16:1+efi_rts_wq	12:05:10	3
20289	99	282	0,281	cyclictest	25330	-21	kworker/u16:0+efi_rts_wq	08:40:12	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17