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 Dec 12, 2025 00:46:18)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
620307	2	1852	1835,6	sleep0	620246	-21	kworker/0:2+events@ dbs_work_handler	19:07:35	0
618907	2	1170	1145,16	sleep4	0	-21	swapper/4	19:05:18	4
620294	2	367	348,9	sleep2	612294	-21	kworker/2:3+events@ dbs_work_handler	19:07:30	2
618840	2	218	195,11	sleep3	612241	-21	kworker/3:0+events@ dbs_work_handler	19:05:17	3
620638	99	158	120,31	cyclictest	696522	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:55:33	0
620638	99	136	97,31	cyclictest	689930	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:40:33	0
620638	99	136	97,31	cyclictest	689930	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:40:33	0
620638	99	129	17,82	cyclictest	638458	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	20:00:24	0
620638	99	126	2,110	cyclictest	0	-21	swapper/0	21:15:34	0
620638	99	126	2,110	cyclictest	0	-21	swapper/0	21:15:33	0
620638	99	123	80,36	cyclictest	752791	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:28:06	0
620656	99	122	117,2	cyclictest	0	-21	swapper/4	21:55:34	4
620638	99	121	71,35	cyclictest	738314	-21	cat	22:10:02	0
620638	99	121	71,35	cyclictest	738314	-21	cat	22:10:01	0
620638	99	116	70,24	cyclictest	0	-21	swapper/0	22:40:22	0
620638	99	116	67,33	cyclictest	0	-21	swapper/0	22:39:08	0
620638	99	116	67,33	cyclictest	0	-21	swapper/0	22:39:07	0
620638	99	115	78,30	cyclictest	654608	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:42:44	0
620638	99	113	63,32	cyclictest	0	-21	swapper/0	21:35:31	0
620638	99	111	2,75	cyclictest	0	-21	swapper/0	21:25:40	0
620638	99	110	68,31	cyclictest	0	-21	swapper/0	20:35:24	0
620638	99	108	54,41	cyclictest	656	50	irq/527-eth0-Tx	00:30:35	0
620638	99	108	54,41	cyclictest	656	50	irq/527-eth0-Tx	00:30:35	0
620638	99	108	2,95	cyclictest	0	-21	swapper/0	22:30:46	0
620638	99	108	2,95	cyclictest	0	-21	swapper/0	22:30:46	0
620638	99	107	69,28	cyclictest	0	-21	swapper/0	00:20:45	0
620638	99	104	1,97	cyclictest	0	-21	swapper/0	22:50:42	0
620638	99	104	1,92	cyclictest	0	-21	swapper/0	23:34:10	0
620638	99	104	1,92	cyclictest	0	-21	swapper/0	23:34:10	0
620661	99	103	98,2	cyclictest	0	-21	swapper/5	21:55:33	5
620638	99	103	2,89	cyclictest	0	-21	swapper/0	21:00:25	0
620638	99	103	1,77	cyclictest	0	-21	swapper/0	00:15:17	0
620638	99	102	65,28	cyclictest	658	50	irq/529-eth0-Tx	21:10:48	0
620638	99	102	2,88	cyclictest	689930	-21	kworker/u12:3+rpciod@ rpc_async_schedule	21:45:19	0
620638	99	101	49,35	cyclictest	0	-21	swapper/0	22:45:26	0
620638	99	100	64,28	cyclictest	630279	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:37:36	0
620638	99	100	4,77	cyclictest	14	-21	rcu_preempt	23:48:58	0
620638	99	100	1,70	cyclictest	0	-21	swapper/0	22:13:45	0
620656	99	99	94,2	cyclictest	0	-21	swapper/4	21:40:33	4
620656	99	99	94,2	cyclictest	0	-21	swapper/4	21:40:32	4
620638	99	99	32,44	cyclictest	624332	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:25:22	0
620638	99	98	63,26	cyclictest	658	50	irq/529-eth0-Tx	19:50:17	0
620638	99	98	2,90	cyclictest	658	50	irq/529-eth0-Tx	21:24:41	0
620638	99	98	2,59	cyclictest	730576	-21	ssh	22:03:04	0
620638	99	98	1,70	cyclictest	842266	-21	kworker/u12:0+rpciod@ rpc_async_schedule	23:50:28	0
620638	99	97	49,32	cyclictest	654328	-21	grep	20:30:43	0
620638	99	97	49,32	cyclictest	654328	-21	grep	20:30:43	0
620638	99	97	2,90	cyclictest	0	-21	swapper/0	19:30:17	0
620642	99	96	80,8	cyclictest	743803	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:38:09	1
620642	99	96	80,8	cyclictest	743803	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:38:09	1
620638	99	96	59,29	cyclictest	650562	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:26:22	0
620638	99	96	2,82	cyclictest	0	-21	swapper/0	23:25:13	0
620638	99	96	1,68	cyclictest	48	-21	rcuop/4	23:57:27	0
620638	99	96	1,68	cyclictest	48	-21	rcuop/4	23:57:27	0
620638	99	95	60,25	cyclictest	657	50	irq/528-eth0-Tx	20:20:42	0
620638	99	95	49,33	cyclictest	0	-21	swapper/0	21:05:23	0
620638	99	95	2,87	cyclictest	0	-21	swapper/0	19:10:31	0
620638	99	95	1,78	cyclictest	0	-21	swapper/0	23:00:41	0
620651	99	94	68,9	cyclictest	743803	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:38:07	3
620651	99	94	68,9	cyclictest	743803	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:38:06	3
620638	99	94	54,30	cyclictest	658	50	irq/529-eth0-Tx	00:05:35	0
620638	99	94	38,34	cyclictest	0	-21	swapper/0	20:55:18	0
620638	99	94	2,83	cyclictest	0	-21	swapper/0	23:09:48	0
620638	99	94	2,83	cyclictest	0	-21	swapper/0	23:09:47	0
620638	99	93	60,21	cyclictest	0	-21	swapper/0	23:40:42	0
620638	99	93	53,30	cyclictest	657	50	irq/528-eth0-Tx	23:35:34	0
620638	99	93	45,34	cyclictest	0	-21	swapper/0	00:10:33	0
620638	99	92	42,42	cyclictest	712093	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:18:09	0
620638	99	91	45,34	cyclictest	673410	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:33:09	0
620638	99	91	33,30	cyclictest	657	50	irq/528-eth0-Tx	23:20:36	0
620638	99	91	1,79	cyclictest	15	-21	rcuc/0	00:35:34	0
620638	99	90	51,29	cyclictest	656	50	irq/527-eth0-Tx	20:10:29	0
620638	99	90	48,25	cyclictest	0	-21	swapper/0	20:08:13	0
620638	99	90	45,36	cyclictest	0	-21	swapper/0	19:55:31	0
620638	99	90	45,33	cyclictest	0	-21	swapper/0	22:20:26	0
620638	99	90	2,13	cyclictest	0	-21	swapper/0	23:20:02	0
620638	99	89	52,28	cyclictest	657	50	irq/528-eth0-Tx	22:55:14	0
620638	99	89	2,71	cyclictest	0	-21	swapper/0	00:05:01	0
620647	99	88	75,7	cyclictest	808505	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:13:16	2
620647	99	88	74,7	cyclictest	858581	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:13:27	2
620638	99	88	48,28	cyclictest	0	-21	swapper/0	20:45:39	0
620656	99	87	77,5	cyclictest	0	-21	swapper/4	22:28:06	4
620638	99	87	38,35	cyclictest	0	-21	swapper/0	19:15:41	0
620638	99	87	38,35	cyclictest	0	-21	swapper/0	19:15:41	0
620638	99	87	1,61	cyclictest	13	-21	ksoftirqd/0	21:50:18	0
620638	99	86	59,14	cyclictest	0	-21	swapper/0	19:45:23	0
620638	99	86	46,30	cyclictest	658	50	irq/529-eth0-Tx	23:14:04	0
620638	99	86	43,34	cyclictest	658	50	irq/529-eth0-Tx	20:15:19	0
620638	99	85	37,31	cyclictest	0	-21	swapper/0	19:20:42	0
620638	99	83	22,32	cyclictest	0	-21	swapper/0	00:25:38	0
862988	2	82	0,3	chrt	0	-21	swapper/1	23:55:16	1
862988	2	82	0,3	chrt	0	-21	swapper/1	23:55:16	1
620656	99	82	76,3	cyclictest	0	-21	swapper/4	20:42:45	4
620638	99	82	43,27	cyclictest	0	-21	swapper/0	20:50:38	0
620647	99	80	67,7	cyclictest	771466	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	22:43:08	2
620638	99	80	46,24	cyclictest	0	-21	swapper/0	19:40:42	0
620661	99	79	74,2	cyclictest	0	-21	swapper/5	21:40:33	5
620661	99	79	74,2	cyclictest	0	-21	swapper/5	21:40:32	5
620647	99	78	64,7	cyclictest	796633	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:08:15	2
620647	99	78	64,7	cyclictest	796633	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:08:15	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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