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 50 highest latencies:

System rackfslot7s.osadl.org (updated Sat Apr 11, 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
3511964	99	3141	14,3122	cyclictest	3539712	-21	kworker/3:0+events	20:50:14	3
3511953	99	3097	15,3078	cyclictest	3591554	-21	kworker/0:0+events	23:15:01	0
3511964	99	2897	14,2879	cyclictest	3606810	-21	kworker/3:1+events	00:05:13	3
3511956	99	2891	14,2872	cyclictest	3531752	-21	kworker/1:0+events	20:20:14	1
3511958	99	2842	13,2824	cyclictest	3580648	-21	kworker/2:2+events	23:00:18	2
3511953	99	2720	13,2704	cyclictest	3533590	-21	kworker/0:2+events	20:40:39	0
3511953	99	2717	10,2705	cyclictest	3591554	-21	kworker/0:0+events	23:25:18	0
3511964	99	2713	13,2696	cyclictest	3582135	-21	kworker/3:2+events	22:48:08	3
3511956	99	2700	13,2684	cyclictest	3572324	-21	kworker/1:1+events	22:20:15	1
3511964	99	2673	11,2659	cyclictest	3508084	-21	kworker/3:0+events	19:15:00	3
3511956	99	2651	13,2634	cyclictest	3541195	-21	kworker/1:1+events	20:40:16	1
3511958	99	2648	12,2633	cyclictest	3586940	-21	kworker/2:3+events	23:05:13	2
3511958	99	2626	11,2612	cyclictest	3575696	-21	kworker/2:1+events	22:30:14	2
3511958	99	2581	13,2564	cyclictest	3609469	-21	kworker/2:1+events	00:18:09	2
3511958	99	2536	14,2518	cyclictest	3546306	-21	kworker/2:1+events	21:02:28	2
3511953	99	2536	12,2521	cyclictest	3601682	-21	kworker/0:2+events	23:51:51	0
3511958	99	2535	12,2521	cyclictest	3538686	-21	kworker/2:2+events	20:38:44	2
3511958	99	2531	12,2515	cyclictest	3593480	-21	kworker/2:2+events	23:31:02	2
3511958	99	2528	12,2512	cyclictest	3550775	-21	kworker/2:2+events	21:22:49	2
3511958	99	2502	12,2484	cyclictest	3596059	-21	kworker/2:0+events	00:30:21	2
3511958	99	2502	10,2489	cyclictest	3550775	-21	kworker/2:2+events	21:25:27	2
3511964	99	2499	12,2483	cyclictest	3602838	-21	kworker/3:1+events	23:50:18	3
3511958	99	2494	12,2479	cyclictest	3614563	-21	kworker/2:1+events	00:29:33	2
3511958	99	2490	12,2474	cyclictest	3591434	-21	kworker/2:1+events	23:20:21	2
3511964	99	2489	12,2474	cyclictest	3547481	-21	kworker/3:2+events	21:08:38	3
3511956	99	2487	11,2472	cyclictest	3608052	-21	kworker/1:0+events	00:33:27	1
3511953	99	2475	11,2460	cyclictest	3533590	-21	kworker/0:2+events	20:32:41	0
3511953	99	2472	12,2456	cyclictest	3616138	-21	kworker/0:1+events	00:26:53	0
3511958	99	2469	12,2453	cyclictest	3562157	-21	kworker/2:0+events	21:59:48	2
3511964	99	2464	12,2449	cyclictest	3547481	-21	kworker/3:2+events	20:58:40	3
3511958	99	2462	9,2450	cyclictest	3604760	-21	kworker/2:2+events	23:55:41	2
3511958	99	2458	11,2444	cyclictest	3528554	-21	kworker/2:2+events	20:05:28	2
3511958	99	2458	10,2444	cyclictest	3506549	-21	kworker/2:0+events	19:24:11	2
3511958	99	2457	12,2442	cyclictest	3530227	-21	kworker/2:0+events	20:10:47	2
3511958	99	2455	12,2438	cyclictest	3562157	-21	kworker/2:0+events	21:50:14	2
3511958	99	2455	12,2438	cyclictest	3562157	-21	kworker/2:0+events	21:50:13	2
3511958	99	2452	12,2436	cyclictest	3580648	-21	kworker/2:2+events	22:49:13	2
3511958	99	2450	12,2434	cyclictest	3518260	-21	kworker/2:1+events	19:27:15	2
3511953	99	2450	12,2434	cyclictest	3523897	-21	kworker/0:0+events	19:47:21	0
3511958	99	2448	12,2434	cyclictest	3506549	-21	kworker/2:0+events	19:45:06	2
3511958	99	2446	10,2433	cyclictest	3562157	-21	kworker/2:0+events	22:07:48	2
3511956	99	2446	10,2433	cyclictest	3601116	-21	kworker/1:2+events	23:42:20	1
3511953	99	2446	11,2431	cyclictest	3583531	-21	kworker/0:0+events	22:52:18	0
3511958	99	2445	12,2429	cyclictest	3550775	-21	kworker/2:2+events	21:42:31	2
3511958	99	2445	11,2430	cyclictest	3609469	-21	kworker/2:1+events	00:10:33	2
3511958	99	2445	11,2430	cyclictest	3567586	-21	kworker/2:1+events	22:00:56	2
3511958	99	2445	10,2431	cyclictest	3538686	-21	kworker/2:2+events	20:46:26	2
3511958	99	2444	12,2429	cyclictest	3604760	-21	kworker/2:2+events	00:00:36	2
3511953	99	2444	11,2429	cyclictest	3585215	-21	kworker/0:2+events	23:00:40	0
3511964	99	2443	12,2427	cyclictest	3536158	-21	kworker/3:2+events	20:29:37	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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