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 Mon Nov 24, 2025 00:44:16)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
802446	99	3121	13,3103	cyclictest	882734	-21	kworker/0:0+events	23:35:16	0
802446	99	2693	12,2677	cyclictest	893817	-21	kworker/0:0+events	00:05:24	0
802456	99	2558	11,2542	cyclictest	884266	-21	kworker/3:0+events	23:45:11	3
802453	99	2541	12,2525	cyclictest	828153	-21	kworker/2:0+events	20:35:19	2
802450	99	2506	12,2490	cyclictest	856886	-21	kworker/1:2+events	22:00:19	1
802453	99	2442	12,2427	cyclictest	822225	-21	kworker/2:2+events	20:30:16	2
802446	99	2436	12,2420	cyclictest	811846	-21	kworker/0:0+events	19:40:15	0
802446	99	2419	11,2406	cyclictest	856947	-21	kworker/0:1+events	22:35:20	0
802450	99	2397	3,2391	cyclictest	906406	-21	kworker/1:2+events	00:35:20	1
802450	99	2384	12,2368	cyclictest	825234	-21	kworker/1:1+events	20:25:18	1
802450	99	2377	9,2364	cyclictest	863385	-21	kworker/1:0+events	22:22:02	1
802450	99	2359	11,2345	cyclictest	900245	-21	kworker/1:0+events	00:31:29	1
802450	99	2331	12,2316	cyclictest	868140	-21	kworker/1:0+events	22:45:00	1
802450	99	2321	11,2306	cyclictest	865266	-21	kworker/1:2+events	22:26:33	1
802446	99	2308	10,2294	cyclictest	874528	-21	kworker/0:1+events	22:56:49	0
802450	99	2289	12,2274	cyclictest	877952	-21	kworker/1:2+events	23:16:17	1
802450	99	2288	11,2273	cyclictest	904777	-21	kworker/1:1+events	00:29:58	1
802453	99	2276	11,2262	cyclictest	832782	-21	kworker/2:2+events	20:51:30	2
802453	99	2243	10,2230	cyclictest	856853	-21	kworker/2:2+events	22:07:34	2
802446	99	2242	11,2228	cyclictest	868323	-21	kworker/0:2+events	22:52:16	0
802456	99	2226	11,2212	cyclictest	873043	-21	kworker/3:1+events	23:13:36	3
802453	99	2225	9,2212	cyclictest	892155	-21	kworker/2:2+events	00:03:50	2
802453	99	2221	13,2204	cyclictest	892155	-21	kworker/2:2+events	00:06:30	2
802456	99	2218	10,2205	cyclictest	881100	-21	kworker/3:2+events	23:17:01	3
802453	99	2216	11,2202	cyclictest	856853	-21	kworker/2:2+events	22:11:21	2
802456	99	2214	11,2200	cyclictest	873043	-21	kworker/3:1+events	23:03:38	3
802456	99	2213	11,2198	cyclictest	810392	-21	kworker/3:1+events	19:48:10	3
802453	99	2213	11,2199	cyclictest	872863	-21	kworker/2:0+events	22:51:28	2
802453	99	2212	10,2199	cyclictest	872863	-21	kworker/2:0+events	23:08:37	2
802456	99	2210	10,2197	cyclictest	825050	-21	kworker/3:1+events	20:24:54	3
802453	99	2210	8,2199	cyclictest	868082	-21	kworker/2:1+events	22:32:17	2
802453	99	2210	11,2196	cyclictest	901576	-21	kworker/2:0+events	00:16:24	2
802456	99	2209	8,2197	cyclictest	884266	-21	kworker/3:0+events	23:38:19	3
802453	99	2209	10,2196	cyclictest	892155	-21	kworker/2:2+events	00:32:40	2
802453	99	2206	9,2194	cyclictest	822225	-21	kworker/2:2+events	20:29:09	2
802456	99	2205	11,2191	cyclictest	893848	-21	kworker/3:0+events	23:53:36	3
802450	99	2202	11,2188	cyclictest	815598	-21	kworker/1:1+events	19:59:35	1
802456	99	2201	11,2187	cyclictest	831304	-21	kworker/3:1+events	20:38:17	3
802450	99	2201	11,2187	cyclictest	831423	-21	kworker/1:0+events	20:53:44	1
802456	99	2198	8,2186	cyclictest	858333	-21	kworker/3:1+events	22:11:45	3
802456	99	2198	11,2184	cyclictest	890495	-21	kworker/3:1+events	23:41:47	3
802456	99	2196	11,2182	cyclictest	873043	-21	kworker/3:1+events	22:54:54	3
802453	99	2196	11,2182	cyclictest	884328	-21	kworker/2:1+events	23:23:27	2
802453	99	2196	11,2182	cyclictest	863171	-21	kworker/2:1+events	22:17:51	2
802450	99	2196	11,2182	cyclictest	888988	-21	kworker/1:0+events	23:46:22	1
802450	99	2196	11,2182	cyclictest	831423	-21	kworker/1:0+events	20:56:26	1
802450	99	2193	8,2182	cyclictest	821627	-21	kworker/1:0+events	20:06:30	1
802456	99	2192	10,2178	cyclictest	869777	-21	kworker/3:2+events	22:40:21	3
802450	99	2188	11,2174	cyclictest	898638	-21	kworker/1:2+events	00:11:04	1
802453	99	2185	11,2171	cyclictest	847122	-21	kworker/2:1+events	21:28:31	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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