OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #3, slot #4

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance

Characteristics of the 100 highest latencies:

System rack3slot4.osadl.org (updated Fri Aug 28, 2026 12:46:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
971055	99	112	99,7	cyclictest	1077776	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:19:17	3
971055	99	112	99,7	cyclictest	1077776	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:19:17	3
971055	99	106	91,7	cyclictest	1053684	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:54:14	3
971039	99	106	2,91	cyclictest	0	-21	swapper/0	11:45:27	0
971060	99	103	97,3	cyclictest	0	-21	swapper/4	11:29:27	4
971049	99	100	86,7	cyclictest	1077776	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:44:19	2
971039	99	100	1,88	cyclictest	0	-21	swapper/0	08:01:39	0
971039	99	100	1,88	cyclictest	0	-21	swapper/0	08:01:38	0
971039	99	100	18,56	cyclictest	1143031	-21	kworker/u12:0+rpciod@ rpc_async_schedule	11:11:14	0
971039	99	96	59,27	cyclictest	1133923	-21	latency_hist	10:40:01	0
971039	99	96	1,82	cyclictest	0	-21	swapper/0	09:20:11	0
971039	99	96	12,79	cyclictest	142	50	irq/98-imx_mu_c	12:05:50	0
971055	99	95	81,7	cyclictest	1009944	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:04:10	3
971055	99	95	81,6	cyclictest	1189864	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:34:27	3
971049	99	94	80,7	cyclictest	1053684	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:39:15	2
971049	99	94	80,7	cyclictest	1053684	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:39:15	2
971039	99	93	60,15	cyclictest	15	-21	rcuc/0	11:50:48	0
971039	99	93	1,80	cyclictest	0	-21	swapper/0	08:17:01	0
971039	99	93	1,76	cyclictest	0	-21	swapper/0	11:37:35	0
971039	99	92	2,81	cyclictest	0	-21	swapper/0	07:46:13	0
971039	99	92	1,76	cyclictest	0	-21	swapper/0	08:35:15	0
971039	99	92	1,70	cyclictest	0	-21	swapper/0	07:30:43	0
971039	99	92	1,70	cyclictest	0	-21	swapper/0	07:30:42	0
971039	99	92	12,49	cyclictest	1077776	-21	kworker/u12:3+flush-179:96@ wb_workfn	10:25:15	0
971039	99	91	21,25	cyclictest	1037553	-21	ssh	09:25:14	0
971039	99	91	1,74	cyclictest	0	-21	swapper/0	07:40:20	0
971039	99	90	53,23	cyclictest	0	-21	swapper/0	07:38:29	0
971039	99	90	2,68	cyclictest	0	-21	swapper/0	11:26:24	0
971039	99	90	1,77	cyclictest	0	-21	swapper/0	10:16:24	0
971039	99	90	1,77	cyclictest	0	-21	swapper/0	10:16:23	0
971039	99	90	1,76	cyclictest	0	-21	swapper/0	12:12:00	0
971060	99	89	76,8	cyclictest	1238968	-21	ssh	12:01:04	4
971039	99	89	33,24	cyclictest	674	50	irq/528-eth0-Tx	09:50:41	0
971039	99	89	1,58	cyclictest	0	-21	swapper/0	09:30:22	0
971039	99	89	1,58	cyclictest	0	-21	swapper/0	09:30:22	0
971039	99	88	2,63	cyclictest	1186187	-21	sed	11:20:22	0
971039	99	88	2,37	cyclictest	1077509	-21	ntpq	09:55:34	0
971039	99	88	1,73	cyclictest	0	-21	swapper/0	08:28:43	0
971039	99	87	1,75	cyclictest	0	-21	swapper/0	08:49:15	0
971039	99	86	8,54	cyclictest	0	-21	swapper/0	12:15:41	0
971039	99	86	8,54	cyclictest	0	-21	swapper/0	12:15:40	0
971039	99	86	61,13	cyclictest	0	-21	swapper/0	09:01:19	0
971039	99	86	2,71	cyclictest	0	-21	swapper/0	09:40:15	0
971039	99	86	20,35	cyclictest	1135133	-21	missed_timers	10:40:26	0
971039	99	85	43,26	cyclictest	1237634	-21	cat	12:00:25	0
971039	99	85	38,26	cyclictest	0	-21	swapper/0	07:25:23	0
971039	99	85	1,70	cyclictest	0	-21	swapper/0	07:13:18	0
971039	99	85	1,64	cyclictest	0	-21	swapper/0	10:20:11	0
971039	99	85	1,64	cyclictest	0	-21	swapper/0	10:20:11	0
971039	99	84	2,16	cyclictest	1181970	-21	ssh	11:16:47	0
971039	99	84	2,16	cyclictest	1063607	-21	aten2_r3power_c	09:45:17	0
971039	99	84	1,49	cyclictest	0	-21	swapper/0	10:10:24	0
971044	99	83	58,8	cyclictest	1077776	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:45:12	1
971039	99	83	45,23	cyclictest	0	-21	swapper/0	08:32:28	0
971039	99	83	2,72	cyclictest	0	-21	swapper/0	07:20:44	0
971039	99	83	1,15	cyclictest	1019894	-21	ssh	09:10:05	0
971039	99	82	44,22	cyclictest	0	-21	swapper/0	08:22:50	0
971039	99	82	2,67	cyclictest	0	-21	swapper/0	09:36:39	0
971039	99	82	2,67	cyclictest	0	-21	swapper/0	09:36:39	0
971039	99	82	2,60	cyclictest	1282082	-21	/usr/sbin/munin	12:35:22	0
971039	99	82	1,76	cyclictest	0	-21	swapper/0	07:59:43	0
971039	99	82	1,69	cyclictest	0	-21	swapper/0	10:55:25	0
971039	99	82	1,69	cyclictest	0	-21	swapper/0	10:55:25	0
971039	99	82	1,63	cyclictest	1025477	-21	ssh	09:15:30	0
971039	99	82	1,62	cyclictest	0	-21	swapper/0	08:07:25	0
971039	99	82	1,56	cyclictest	0	-21	swapper/0	12:28:06	0
971039	99	82	1,56	cyclictest	0	-21	swapper/0	07:17:21	0
971039	99	82	1,56	cyclictest	0	-21	swapper/0	07:17:21	0
971039	99	82	1,12	cyclictest	0	-21	swapper/0	08:44:03	0
971060	99	81	70,7	cyclictest	1141960	-21	ssh	10:45:37	4
971039	99	81	25,38	cyclictest	1018584	-21	awk	09:05:26	0
971039	99	81	1,62	cyclictest	0	-21	swapper/0	12:24:04	0
971039	99	81	1,62	cyclictest	0	-21	swapper/0	12:24:03	0
971055	99	80	66,7	cyclictest	999336	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:49:09	3
971039	99	79	1,73	cyclictest	0	-21	swapper/0	08:50:27	0
971039	99	79	1,61	cyclictest	0	-21	swapper/0	10:30:17	0
971049	99	78	64,7	cyclictest	1169054	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:19:24	2
971039	99	78	6,56	cyclictest	674	50	irq/528-eth0-Tx	11:00:19	0
971039	99	78	6,56	cyclictest	674	50	irq/528-eth0-Tx	11:00:18	0
971039	99	78	44,22	cyclictest	0	-21	swapper/0	08:57:26	0
971039	99	78	2,64	cyclictest	1200677	-21	ssh	11:31:17	0
971039	99	78	2,58	cyclictest	1167970	-21	/usr/sbin/munin	11:05:46	0
971039	99	78	2,58	cyclictest	1167970	-21	/usr/sbin/munin	11:05:45	0
971039	99	78	1,59	cyclictest	0	-21	swapper/0	10:00:14	0
971039	99	78	1,58	cyclictest	0	-21	swapper/0	12:30:17	0
971039	99	78	1,57	cyclictest	0	-21	swapper/0	10:45:17	0
971039	99	78	1,52	cyclictest	0	-21	swapper/0	11:55:31	0
971049	99	77	62,7	cyclictest	1157991	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:59:21	2
971049	99	77	62,7	cyclictest	1157991	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:59:20	2
971039	99	77	1,66	cyclictest	0	-21	swapper/0	08:12:17	0
971039	99	77	1,59	cyclictest	0	-21	swapper/0	11:42:46	0
971039	99	77	1,59	cyclictest	0	-21	swapper/0	11:42:45	0
971039	99	77	1,55	cyclictest	0	-21	swapper/0	10:05:34	0
971039	99	76	48,13	cyclictest	0	-21	swapper/0	07:50:03	0
971039	99	76	48,13	cyclictest	0	-21	swapper/0	07:50:02	0
971039	99	76	1,59	cyclictest	0	-21	swapper/0	10:50:45	0
1261429	2	76	0,4	sleep4	0	-21	swapper/4	12:19:32	4
1261429	2	76	0,4	sleep4	0	-21	swapper/4	12:19:31	4
1034939	2	76	0,4	sleep3	36	-21	rcuc/3	09:22:54	3
971060	99	75	69,3	cyclictest	0	-21	swapper/4	11:09:23	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17