OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #7

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

Click here to display the system's profile data.

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.

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 rackfslot7s.osadl.org (updated Wed Mar 25, 2026 00:44:17)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3878671	99	3400	15,3380	cyclictest	3975217	-21	kworker/0:0+events	00:10:14	0
3878676	99	3158	12,3142	cyclictest	3980189	-21	kworker/1:1+events	00:35:21	1
3878679	99	2907	14,2890	cyclictest	82	-21	kswapd0	00:01:47	2
3878676	99	2780	13,2765	cyclictest	3885302	-21	kworker/1:1+events	19:35:03	1
3878679	99	2759	13,2741	cyclictest	3932052	-21	kworker/2:1+events	21:55:12	2
3878679	99	2750	13,2734	cyclictest	3911392	-21	kworker/2:2+events	20:55:17	2
3878679	99	2662	11,2647	cyclictest	3946114	-21	kworker/2:1+events	22:40:17	2
3878671	99	2614	10,2599	cyclictest	3896688	-21	kworker/0:0+events	20:30:15	0
3878676	99	2560	1,2555	cyclictest	3892046	-21	kworker/1:1+events	20:01:08	1
3878679	99	2544	11,2529	cyclictest	3954289	-21	kworker/2:2+events	23:05:00	2
3878671	99	2532	1,2525	cyclictest	3911218	-21	kworker/0:0+events	20:50:20	0
3878676	99	2520	10,2506	cyclictest	3961502	-21	kworker/1:0+events	23:32:25	1
3878682	99	2508	12,2492	cyclictest	3901696	-21	kworker/3:0+events	20:24:59	3
3878671	99	2501	12,2485	cyclictest	3879952	-21	kworker/0:0+events	19:20:11	0
3878676	99	2495	12,2481	cyclictest	3941518	-21	kworker/1:1+events	22:26:57	1
3878676	99	2493	10,2480	cyclictest	3890390	-21	kworker/1:0+events	19:45:15	1
3878679	99	2487	10,2473	cyclictest	3935446	-21	kworker/2:2+events	22:27:43	2
3878671	99	2478	12,2462	cyclictest	3901903	-21	kworker/0:1+events	20:22:25	0
3878671	99	2476	11,2461	cyclictest	3901903	-21	kworker/0:1+events	20:36:44	0
3878676	99	2471	11,2457	cyclictest	3914297	-21	kworker/1:1+events	20:57:32	1
3878671	99	2465	12,2450	cyclictest	3951118	-21	kworker/0:2+events	23:00:53	0
3878676	99	2463	9,2450	cyclictest	3927317	-21	kworker/1:1+events	21:51:43	1
3878671	99	2463	12,2447	cyclictest	3936948	-21	kworker/0:0+events	22:12:02	0
3878676	99	2462	12,2446	cyclictest	3895420	-21	kworker/1:2+events	20:07:10	1
3878671	99	2462	12,2447	cyclictest	3887699	-21	kworker/0:0+events	19:46:22	0
3878676	99	2459	11,2445	cyclictest	3955811	-21	kworker/1:2+events	23:17:50	1
3878676	99	2451	12,2436	cyclictest	3955811	-21	kworker/1:2+events	23:22:26	1
3878679	99	2447	10,2433	cyclictest	3954289	-21	kworker/2:2+events	23:23:58	2
3878671	99	2446	10,2431	cyclictest	3912875	-21	kworker/0:1+events	20:57:10	0
3878679	99	2444	12,2428	cyclictest	3923358	-21	kworker/2:2+events	21:36:53	2
3878676	99	2438	12,2422	cyclictest	3955811	-21	kworker/1:2+events	23:12:08	1
3878682	99	2433	10,2419	cyclictest	3886964	-21	kworker/3:2+events	20:17:29	3
3878676	99	2433	12,2419	cyclictest	3963533	-21	kworker/1:1+events	23:35:05	1
3878676	99	2426	12,2410	cyclictest	3922209	-21	kworker/1:0+events	21:22:24	1
3878679	99	2425	12,2409	cyclictest	3923358	-21	kworker/2:2+events	21:34:36	2
3878676	99	2421	12,2406	cyclictest	3936676	-21	kworker/1:0+events	22:34:32	1
3878679	99	2420	11,2405	cyclictest	3935446	-21	kworker/2:2+events	22:15:53	2
3878676	99	2420	12,2404	cyclictest	3961502	-21	kworker/1:0+events	23:51:22	1
3878671	99	2414	12,2399	cyclictest	3954052	-21	kworker/0:1+events	23:10:59	0
3878679	99	2412	12,2396	cyclictest	3954289	-21	kworker/2:2+events	23:07:15	2
3878671	99	2412	10,2398	cyclictest	3967386	-21	kworker/0:0+events	23:49:08	0
3878682	99	2411	12,2396	cyclictest	3949740	-21	kworker/3:2+events	23:17:27	3
3878676	99	2410	12,2395	cyclictest	3946412	-21	kworker/1:1+events	22:47:51	1
3878671	99	2409	12,2395	cyclictest	3933750	-21	kworker/0:2+events	22:30:21	0
3878671	99	2409	11,2394	cyclictest	3896688	-21	kworker/0:0+events	20:09:05	0
3878679	99	2408	12,2393	cyclictest	3956208	-21	kworker/2:0+events	23:28:57	2
3878676	99	2406	11,2393	cyclictest	3892046	-21	kworker/1:1+events	19:50:08	1
3878676	99	2405	12,2389	cyclictest	3903317	-21	kworker/1:0+events	20:54:09	1
3878671	99	2404	11,2390	cyclictest	3890241	-21	kworker/0:2+events	19:50:30	0
3878676	99	2400	12,2385	cyclictest	3919179	-21	kworker/1:1+events	21:28:07	1
3878676	99	2400	12,2384	cyclictest	3980189	-21	kworker/1:1+events	00:31:34	1
3878676	99	2398	12,2384	cyclictest	3915945	-21	kworker/1:2+events	21:10:05	1
3878676	99	2398	12,2383	cyclictest	3943209	-21	kworker/1:2+events	22:37:36	1
3878676	99	2398	11,2383	cyclictest	3975038	-21	kworker/1:0+events	00:10:36	1
3878676	99	2397	12,2381	cyclictest	3927317	-21	kworker/1:1+events	21:41:27	1
3878676	99	2397	12,2381	cyclictest	3900065	-21	kworker/1:1+events	20:12:33	1
3878676	99	2396	12,2381	cyclictest	3950911	-21	kworker/1:2+events	22:52:02	1
3878676	99	2396	11,2381	cyclictest	3971724	-21	kworker/1:2+events	00:04:51	1
3878676	99	2395	9,2382	cyclictest	3915945	-21	kworker/1:2+events	21:18:09	1
3878676	99	2395	12,2379	cyclictest	3952602	-21	kworker/1:0+events	22:58:55	1
3878671	99	2395	9,2383	cyclictest	3928820	-21	kworker/0:0+events	21:50:14	0
3878676	99	2394	12,2379	cyclictest	3968773	-21	kworker/1:1+events	23:49:29	1
3878676	99	2394	11,2381	cyclictest	3936676	-21	kworker/1:0+events	22:15:06	1
3878671	99	2394	2,2389	cyclictest	3963774	-21	kworker/0:1+events	23:38:29	0
3878671	99	2393	12,2377	cyclictest	3960562	-21	kworker/0:2+events	23:33:58	0
3878679	99	2392	8,2381	cyclictest	3898752	-21	kworker/2:0+events	20:13:39	2
3878671	99	2392	12,2377	cyclictest	3933750	-21	kworker/0:2+events	22:09:43	0
3878671	99	2392	12,2376	cyclictest	3919149	-21	kworker/0:0+events	21:31:13	0
3878671	99	2391	12,2376	cyclictest	3944692	-21	kworker/0:1+events	22:39:06	0
3878671	99	2391	12,2373	cyclictest	3920793	-21	kworker/0:1+events	21:19:17	0
3878671	99	2391	10,2377	cyclictest	3893431	-21	kworker/0:1+events	19:58:24	0
3878671	99	2390	12,2374	cyclictest	3960562	-21	kworker/0:2+events	23:24:21	0
3878671	99	2390	12,2374	cyclictest	3928820	-21	kworker/0:0+events	21:46:03	0
3878671	99	2390	11,2375	cyclictest	3963774	-21	kworker/0:1+events	00:03:19	0
3878671	99	2388	12,2372	cyclictest	3901903	-21	kworker/0:1+events	20:27:13	0
3878671	99	2387	12,2373	cyclictest	3896688	-21	kworker/0:0+events	20:15:13	0
3878671	99	2387	12,2371	cyclictest	3981681	-21	kworker/0:2+events	00:28:04	0
3878671	99	2387	12,2371	cyclictest	3981681	-21	kworker/0:2+events	00:28:03	0
3878679	99	2385	10,2372	cyclictest	3902784	-21	kworker/2:1+events	20:31:25	2
3878676	99	2383	12,2367	cyclictest	3973397	-21	kworker/1:1+events	00:08:40	1
3878671	99	2382	12,2366	cyclictest	3939556	-21	kworker/0:1+events	22:24:18	0
3878671	99	2381	11,2367	cyclictest	3915792	-21	kworker/0:0+events	21:04:42	0
3878679	99	2378	11,2363	cyclictest	3978626	-21	kworker/2:2+events	00:21:37	2
3878671	99	2377	12,2362	cyclictest	3944692	-21	kworker/0:1+events	22:45:54	0
3878671	99	2376	7,2365	cyclictest	3958871	-21	kworker/0:1+events	23:19:00	0
3878671	99	2376	11,2362	cyclictest	3949305	-21	kworker/0:0+events	22:58:08	0
3878679	99	2366	12,2351	cyclictest	3975005	-21	kworker/2:1+events	00:13:36	2
3878679	99	2365	12,2349	cyclictest	3876758	-21	kworker/2:2+events	19:17:33	2
3878676	99	2365	12,2349	cyclictest	3927317	-21	kworker/1:1+events	21:49:51	1
3878679	99	2364	12,2348	cyclictest	3919213	-21	kworker/2:1+events	21:25:29	2
3878679	99	2364	10,2351	cyclictest	3965375	-21	kworker/2:2+events	23:41:31	2
3878679	99	2363	12,2348	cyclictest	3943355	-21	kworker/2:3+events	22:35:42	2
3878679	99	2363	12,2348	cyclictest	3906427	-21	kworker/2:0+events	20:42:47	2
3878679	99	2363	12,2348	cyclictest	3906427	-21	kworker/2:0+events	20:37:31	2
3878679	99	2361	11,2346	cyclictest	3923358	-21	kworker/2:2+events	21:51:21	2
3878679	99	2357	12,2342	cyclictest	3886811	-21	kworker/2:2+events	19:51:37	2
3878682	99	2352	12,2337	cyclictest	3933720	-21	kworker/3:0+events	22:00:57	3
3878679	99	2352	10,2338	cyclictest	3947741	-21	kworker/2:0+events	22:45:09	2
3878679	99	2351	12,2336	cyclictest	3896862	-21	kworker/2:1+events	20:08:45	2
3878679	99	2351	12,2335	cyclictest	3967259	-21	kworker/2:1+events	23:53:14	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2024-07-29 - 23:00