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 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
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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