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 system in rack #c, slot #8

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 100 highest latencies:

System rackcslot8.osadl.org (updated Mon Aug 03, 2026 00:49:18)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3273	91	245	0,237	ptp4l	0	-21	swapper/1	19:09:22	1
22451	2	244	237,6	sleep4	0	-21	swapper/4	19:06:32	26
23852	99	231	31,2	cyclictest	15	1	rcu_preempt	00:02:37	0
23852	99	230	32,2	cyclictest	15	1	rcu_preempt	21:29:44	0
23852	99	230	32,2	cyclictest	15	1	rcu_preempt	21:29:44	0
24076	99	215	26,123	cyclictest	0	-21	swapper/29	22:55:25	22
24076	99	215	26,123	cyclictest	0	-21	swapper/29	22:55:24	22
23852	99	213	31,2	cyclictest	15	1	rcu_preempt	21:13:25	0
23942	99	196	0,2	cyclictest	15	1	rcu_preempt	22:19:07	4
23942	99	196	0,2	cyclictest	15	1	rcu_preempt	22:19:06	4
23973	99	170	0,168	cyclictest	15	1	rcu_preempt	19:13:27	8
23973	99	167	4,161	cyclictest	15	1	rcu_preempt	23:40:31	8
24045	99	165	48,38	cyclictest	15	1	rcu_preempt	22:09:54	18
24045	99	165	48,38	cyclictest	15	1	rcu_preempt	22:09:54	18
24076	99	158	40,109	cyclictest	0	-21	swapper/29	21:28:49	22
24076	99	158	40,109	cyclictest	0	-21	swapper/29	21:28:49	22
18952	2	157	147,7	sleep23	0	-21	swapper/23	19:05:16	16
23973	99	156	41,86	cyclictest	15	1	rcu_preempt	00:03:24	8
3308	91	150	142,6	phc2sys	0	-21	swapper/2	19:07:44	12
23973	99	150	32,115	cyclictest	15	1	rcu_preempt	21:14:33	8
24076	99	148	30,73	cyclictest	0	-21	swapper/29	21:15:59	22
23973	99	145	0,87	cyclictest	0	-21	swapper/16	22:05:16	8
23973	99	145	0,87	cyclictest	0	-21	swapper/16	22:05:16	8
24076	99	144	0,86	cyclictest	0	-21	swapper/29	19:32:20	22
23942	99	144	43,62	cyclictest	0	-21	swapper/12	22:30:21	4
23942	99	144	43,62	cyclictest	0	-21	swapper/12	22:30:20	4
23942	99	144	21,86	cyclictest	19908	-21	fschecks_time	19:55:16	4
23973	99	143	14,116	cyclictest	0	-21	swapper/16	19:20:15	8
23942	99	143	54,63	cyclictest	0	-21	swapper/12	00:00:09	4
24076	99	142	23,113	cyclictest	0	-21	swapper/29	23:13:03	22
23942	99	142	15,20	cyclictest	0	-21	swapper/12	20:16:27	4
24036	99	141	1,139	cyclictest	0	-21	swapper/24	23:25:17	17
24036	99	141	0,86	cyclictest	0	-21	swapper/24	22:01:06	17
24036	99	141	0,86	cyclictest	0	-21	swapper/24	22:01:05	17
23973	99	140	47,91	cyclictest	15	1	rcu_preempt	21:17:42	8
23973	99	140	0,126	cyclictest	0	-21	swapper/16	23:00:33	8
23973	99	140	0,126	cyclictest	0	-21	swapper/16	23:00:32	8
24076	99	139	24,74	cyclictest	0	-21	swapper/29	21:43:48	22
23942	99	139	17,17	cyclictest	0	-21	swapper/12	23:25:25	4
24076	99	138	19,95	cyclictest	0	-21	swapper/29	19:21:38	22
23989	99	135	0,85	cyclictest	0	-21	swapper/18	22:43:28	10
23989	99	135	0,85	cyclictest	0	-21	swapper/18	22:43:28	10
23942	99	135	30,63	cyclictest	0	-21	swapper/12	00:25:16	4
23942	99	135	28,61	cyclictest	0	-21	swapper/12	23:35:02	4
23973	99	134	45,72	cyclictest	0	-21	swapper/16	19:15:25	8
23942	99	134	31,65	cyclictest	0	-21	swapper/12	23:00:45	4
23942	99	134	31,65	cyclictest	0	-21	swapper/12	23:00:45	4
23942	99	134	28,67	cyclictest	0	-21	swapper/12	22:25:14	4
23942	99	134	28,67	cyclictest	0	-21	swapper/12	22:25:14	4
23942	99	134	28,63	cyclictest	0	-21	swapper/12	00:20:55	4
23973	99	133	33,48	cyclictest	0	-21	swapper/16	22:48:04	8
23973	99	133	33,48	cyclictest	0	-21	swapper/16	22:48:03	8
23973	99	133	24,83	cyclictest	0	-21	swapper/16	21:59:05	8
23973	99	133	24,83	cyclictest	0	-21	swapper/16	21:59:05	8
23942	99	133	30,60	cyclictest	0	-21	swapper/12	19:29:42	4
23942	99	133	28,62	cyclictest	0	-21	swapper/12	00:36:29	4
23973	99	132	17,85	cyclictest	0	-21	swapper/16	21:50:20	8
24093	99	131	50,46	cyclictest	0	-21	swapper/31	22:32:28	25
24093	99	131	50,46	cyclictest	0	-21	swapper/31	22:32:27	25
23973	99	131	26,81	cyclictest	0	-21	swapper/16	21:40:24	8
23942	99	131	29,61	cyclictest	0	-21	swapper/12	20:25:21	4
23973	99	130	87,43	cyclictest	0	-21	swapper/16	20:13:15	8
23973	99	130	16,88	cyclictest	0	-21	swapper/16	21:30:49	8
23973	99	130	0,76	cyclictest	0	-21	swapper/16	22:30:24	8
23973	99	130	0,76	cyclictest	0	-21	swapper/16	22:30:24	8
24021	99	129	0,68	cyclictest	0	-21	swapper/22	00:30:26	15
23973	99	129	16,99	cyclictest	0	-21	swapper/16	00:13:13	8
23942	99	129	25,66	cyclictest	0	-21	swapper/12	21:15:01	4
23882	99	129	24,31	cyclictest	0	-21	swapper/4	23:35:23	26
23973	99	128	53,73	cyclictest	15	1	rcu_preempt	21:20:25	8
23942	99	128	48,49	cyclictest	0	-21	swapper/12	20:40:15	4
23942	99	128	28,60	cyclictest	0	-21	swapper/12	20:35:55	4
23973	99	127	46,50	cyclictest	0	-21	swapper/16	21:49:15	8
23973	99	127	21,80	cyclictest	15	1	rcu_preempt	00:05:04	8
23942	99	127	28,58	cyclictest	0	-21	swapper/12	22:00:33	4
23942	99	127	28,58	cyclictest	0	-21	swapper/12	22:00:33	4
24057	99	126	0,76	cyclictest	0	-21	swapper/27	19:45:22	20
23973	99	126	0,78	cyclictest	0	-21	swapper/16	22:36:18	8
23973	99	126	0,78	cyclictest	0	-21	swapper/16	22:36:17	8
24076	99	125	32,62	cyclictest	0	-21	swapper/29	22:13:43	22
24076	99	125	32,62	cyclictest	0	-21	swapper/29	22:13:43	22
23918	99	125	17,67	cyclictest	0	-21	swapper/9	23:35:41	31
23942	99	124	25,57	cyclictest	0	-21	swapper/12	23:10:26	4
23852	99	124	31,3	cyclictest	15	1	rcu_preempt	23:30:49	0
23997	99	123	0,73	cyclictest	0	-21	swapper/19	22:56:48	11
23997	99	123	0,73	cyclictest	0	-21	swapper/19	22:56:47	11
23973	99	123	18,103	cyclictest	15	1	rcu_preempt	19:57:33	8
23942	99	123	28,57	cyclictest	0	-21	swapper/12	22:43:08	4
23942	99	123	28,57	cyclictest	0	-21	swapper/12	22:43:07	4
23942	99	123	27,58	cyclictest	0	-21	swapper/12	23:30:59	4
23942	99	123	26,58	cyclictest	0	-21	swapper/12	22:07:04	4
23942	99	123	26,58	cyclictest	0	-21	swapper/12	22:07:04	4
23918	99	123	23,65	cyclictest	0	-21	swapper/9	21:21:32	31
23918	99	123	0,72	cyclictest	0	-21	swapper/9	23:11:06	31
24093	99	122	0,86	cyclictest	0	-21	swapper/31	20:50:13	25
24021	99	122	60,62	cyclictest	149	-21	ksoftirqd/22	22:32:50	15
24021	99	122	60,62	cyclictest	149	-21	ksoftirqd/22	22:32:50	15
23973	99	122	36,57	cyclictest	0	-21	swapper/16	00:24:47	8
23973	99	122	34,58	cyclictest	0	-21	swapper/16	23:23:20	8
23973	99	122	22,65	cyclictest	0	-21	swapper/16	23:56:59	8
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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