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 Sun Dec 21, 2025 00:44:19)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3950266	99	2918	14,2901	cyclictest	3990429	-21	kworker/0:0+events	21:20:14	0
3950270	99	2906	13,2889	cyclictest	4006847	-21	kworker/1:1+events	22:05:20	1
3950270	99	2810	13,2792	cyclictest	4016690	-21	kworker/1:2+events	22:45:22	1
3950270	99	2777	11,2762	cyclictest	3959679	-21	kworker/1:1+events	19:55:15	1
3950273	99	2756	13,2739	cyclictest	3956787	-21	kworker/2:1+events	19:40:19	2
3950273	99	2726	13,2708	cyclictest	4019676	-21	kworker/2:0+events	22:45:00	2
3950276	99	2707	13,2690	cyclictest	4048620	-21	kworker/3:2+events	00:20:16	3
3950276	99	2701	13,2685	cyclictest	3982654	-21	kworker/3:0+events	21:00:14	3
3950276	99	2650	13,2632	cyclictest	4011655	-21	kworker/3:0+events	22:20:13	3
3950276	99	2645	13,2627	cyclictest	3970937	-21	kworker/3:0+events	20:30:16	3
3950273	99	2544	12,2529	cyclictest	3983958	-21	kworker/2:0+events	20:55:20	2
3950270	99	2536	12,2520	cyclictest	4001605	-21	kworker/1:2+events	22:00:00	1
3950266	99	2495	7,2484	cyclictest	4053286	-21	kworker/0:1+events	00:30:17	0
3950273	99	2443	12,2428	cyclictest	4043963	-21	kworker/2:3+events	00:21:50	2
3950276	99	2437	12,2422	cyclictest	4026044	-21	kworker/3:2+events	23:15:34	3
3950270	99	2424	12,2408	cyclictest	3984137	-21	kworker/1:1+events	21:03:37	1
3950270	99	2420	11,2406	cyclictest	3959679	-21	kworker/1:1+events	20:10:11	1
3950270	99	2411	12,2396	cyclictest	3974042	-21	kworker/1:1+events	20:42:06	1
3950270	99	2408	11,2394	cyclictest	3959679	-21	kworker/1:1+events	20:07:31	1
3950270	99	2405	12,2390	cyclictest	3985733	-21	kworker/1:2+events	21:10:47	1
3950276	99	2400	11,2386	cyclictest	3964748	-21	kworker/3:2+events	20:01:44	3
3950266	99	2394	12,2379	cyclictest	4025971	-21	kworker/0:2+events	23:04:27	0
3950266	99	2393	12,2379	cyclictest	3954983	-21	kworker/0:2+events	19:30:04	0
3950270	99	2392	9,2380	cyclictest	3959679	-21	kworker/1:1+events	19:45:20	1
3950273	99	2390	12,2374	cyclictest	4043637	-21	kworker/2:1+events	00:04:17	2
3950273	99	2388	12,2373	cyclictest	3962865	-21	kworker/2:2+events	19:55:39	2
3950266	99	2388	12,2373	cyclictest	3995138	-21	kworker/0:1+events	21:29:01	0
3950266	99	2388	12,2373	cyclictest	3995138	-21	kworker/0:1+events	21:29:00	0
3950270	99	2387	12,2371	cyclictest	3993770	-21	kworker/1:2+events	21:35:29	1
3950273	99	2381	11,2367	cyclictest	3955158	-21	kworker/2:2+events	19:26:38	2
3950273	99	2376	10,2362	cyclictest	3989005	-21	kworker/2:2+events	21:19:29	2
3950273	99	2370	12,2355	cyclictest	4010078	-21	kworker/2:1+events	22:32:24	2
3950276	99	2363	11,2349	cyclictest	3972659	-21	kworker/3:1+events	20:20:50	3
3950266	99	2363	12,2347	cyclictest	4029270	-21	kworker/0:2+events	23:42:04	0
3950266	99	2363	12,2347	cyclictest	4008264	-21	kworker/0:1+events	22:10:14	0
3950276	99	2360	12,2345	cyclictest	4036065	-21	kworker/3:1+events	23:43:14	3
3950276	99	2357	8,2345	cyclictest	4024431	-21	kworker/3:0+events	23:06:23	3
3950276	99	2352	11,2338	cyclictest	4008326	-21	kworker/3:1+events	22:12:32	3
3950273	99	2351	12,2336	cyclictest	4021377	-21	kworker/2:1+events	22:52:15	2
3950276	99	2345	8,2334	cyclictest	3972659	-21	kworker/3:1+events	20:28:44	3
3950270	99	2320	12,2305	cyclictest	3985733	-21	kworker/1:2+events	21:06:59	1
3950266	99	2294	11,2280	cyclictest	4048381	-21	kworker/0:2+events	00:13:26	0
3950266	99	2293	11,2280	cyclictest	4001875	-21	kworker/0:0+events	21:50:04	0
3950270	99	2288	10,2275	cyclictest	4012924	-21	kworker/1:2+events	22:23:17	1
3950266	99	2287	12,2272	cyclictest	3995138	-21	kworker/0:1+events	21:31:40	0
3950266	99	2275	10,2262	cyclictest	4046778	-21	kworker/0:1+events	00:16:05	0
3950270	99	2272	11,2257	cyclictest	3989061	-21	kworker/1:1+events	21:22:08	1
3950276	99	2267	11,2253	cyclictest	4016390	-21	kworker/3:0+events	22:36:15	3
3950270	99	2267	11,2253	cyclictest	4029026	-21	kworker/1:1+events	23:20:55	1
3950270	99	2266	11,2252	cyclictest	3982506	-21	kworker/1:0+events	20:51:59	1
3950270	99	2264	11,2250	cyclictest	3964496	-21	kworker/1:2+events	19:54:28	1
3950270	99	2264	10,2251	cyclictest	4054654	-21	kworker/1:0+events	00:36:49	1
3950270	99	2263	9,2250	cyclictest	3998497	-21	kworker/1:1+events	21:43:10	1
3950270	99	2262	11,2248	cyclictest	3959679	-21	kworker/1:1+events	19:41:30	1
3950270	99	2261	11,2247	cyclictest	4050106	-21	kworker/1:1+events	00:28:44	1
3950270	99	2261	11,2247	cyclictest	3998497	-21	kworker/1:1+events	21:45:56	1
3950270	99	2261	11,2246	cyclictest	4010145	-21	kworker/1:1+events	22:17:12	1
3950270	99	2258	9,2246	cyclictest	4029026	-21	kworker/1:1+events	23:12:07	1
3950270	99	2258	8,2246	cyclictest	3984137	-21	kworker/1:1+events	20:58:44	1
3950270	99	2258	11,2243	cyclictest	4019647	-21	kworker/1:0+events	23:04:04	1
3950270	99	2256	11,2242	cyclictest	4037253	-21	kworker/1:1+events	23:39:47	1
3950270	99	2253	10,2240	cyclictest	3969750	-21	kworker/1:0+events	20:16:19	1
3950266	99	2243	9,2231	cyclictest	3978180	-21	kworker/0:0+events	20:37:51	0
3950270	99	2240	11,2226	cyclictest	4012924	-21	kworker/1:2+events	22:25:11	1
3950270	99	2238	11,2224	cyclictest	4003464	-21	kworker/1:0+events	21:51:54	1
3950270	99	2238	10,2225	cyclictest	4044805	-21	kworker/1:0+events	00:01:16	1
3950276	99	2237	7,2226	cyclictest	3970937	-21	kworker/3:0+events	20:37:28	3
3950270	99	2237	8,2225	cyclictest	4046867	-21	kworker/1:1+events	00:11:53	1
3950270	99	2237	11,2223	cyclictest	3948243	-21	kworker/1:0+events	19:23:15	1
3950270	99	2237	11,2222	cyclictest	3972360	-21	kworker/1:2+events	20:21:12	1
3950270	99	2235	11,2221	cyclictest	4008474	-21	kworker/1:0+events	22:10:38	1
3950270	99	2233	10,2220	cyclictest	4022977	-21	kworker/1:2+events	22:56:23	1
3950270	99	2232	8,2221	cyclictest	4034446	-21	kworker/1:0+events	23:31:20	1
3950270	99	2232	7,2222	cyclictest	3980875	-21	kworker/1:2+events	20:47:46	1
3950276	99	2231	8,2220	cyclictest	4014787	-21	kworker/3:1+events	22:44:35	3
3950270	99	2231	11,2216	cyclictest	4051894	-21	kworker/1:2+events	00:30:40	1
3950273	99	2228	11,2214	cyclictest	4003437	-21	kworker/2:1+events	22:05:42	2
3950273	99	2227	11,2213	cyclictest	4032411	-21	kworker/2:2+events	23:31:43	2
3950266	99	2227	7,2216	cyclictest	4050041	-21	kworker/0:0+events	00:23:45	0
3950266	99	2227	11,2213	cyclictest	3998344	-21	kworker/0:2+events	22:04:35	0
3950273	99	2225	9,2213	cyclictest	3953474	-21	kworker/2:0+events	19:33:28	2
3950273	99	2225	11,2211	cyclictest	3967976	-21	kworker/2:2+events	20:14:25	2
3950266	99	2225	9,2213	cyclictest	3958274	-21	kworker/0:1+events	19:36:53	0
3950266	99	2225	10,2212	cyclictest	3990429	-21	kworker/0:0+events	21:42:23	0
3950266	99	2224	11,2210	cyclictest	3959991	-21	kworker/0:0+events	19:43:24	0
3950273	99	2223	9,2211	cyclictest	4008442	-21	kworker/2:2+events	22:11:47	2
3950273	99	2223	9,2211	cyclictest	3977358	-21	kworker/2:2+events	20:43:36	2
3950273	99	2223	11,2209	cyclictest	4011795	-21	kworker/2:2+events	22:25:35	2
3950273	99	2222	11,2207	cyclictest	4048437	-21	kworker/2:1+events	00:16:27	2
3950273	99	2222	10,2208	cyclictest	4056229	-21	kworker/2:2+events	00:37:12	2
3950266	99	2222	9,2211	cyclictest	4001875	-21	kworker/0:0+events	21:55:01	0
3950266	99	2222	11,2208	cyclictest	4039096	-21	kworker/0:1+events	23:49:46	0
3950266	99	2222	11,2208	cyclictest	4029270	-21	kworker/0:2+events	23:21:17	0
3950266	99	2222	10,2209	cyclictest	3976051	-21	kworker/0:2+events	20:40:56	0
3950266	99	2221	11,2206	cyclictest	3976051	-21	kworker/0:2+events	20:50:25	0
3950273	99	2220	11,2206	cyclictest	4024699	-21	kworker/2:0+events	23:08:18	2
3950273	99	2220	11,2205	cyclictest	3987262	-21	kworker/2:0+events	21:24:03	2
3950273	99	2220	11,2205	cyclictest	3983958	-21	kworker/2:0+events	20:52:44	2
3950273	99	2220	10,2207	cyclictest	4010078	-21	kworker/2:1+events	22:36:39	2
3950266	99	2220	11,2206	cyclictest	3966220	-21	kworker/0:0+events	20:05:58	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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