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 Thu Apr 09, 2026 00:46:39)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1608108	99	139	125,7	cyclictest	1891114	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	00:18:23	2
1608102	99	134	110,9	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:35:40	1
1608102	99	134	110,9	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:35:39	1
1608097	99	132	105,19	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:40:27	0
1608102	99	131	115,8	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:35:24	1
1608097	99	124	96,20	cyclictest	1804531	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:30:37	0
1608097	99	124	96,20	cyclictest	1804531	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:30:36	0
1608097	99	124	96,20	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:30:25	0
1608121	99	118	113,2	cyclictest	0	-21	swapper/5	23:30:37	5
1608121	99	118	113,2	cyclictest	0	-21	swapper/5	23:30:37	5
1608097	99	116	63,29	cyclictest	1692651	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:00:22	0
1608097	99	115	63,45	cyclictest	1848175	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:59:25	0
1608097	99	112	3,95	cyclictest	0	-21	swapper/0	00:15:19	0
1608097	99	111	85,19	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:15:35	0
1738949	2	110	0,4	sleep4	1659995	-21	diskmemload-4	22:14:26	4
1608097	99	110	85,20	cyclictest	1865500	-21	ntpq	23:50:28	0
1608097	99	110	55,46	cyclictest	1899300	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:20:20	0
1608108	99	109	95,7	cyclictest	1664062	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:35:13	2
1608108	99	109	63,8	cyclictest	1682320	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:43:27	2
1608097	99	109	62,40	cyclictest	1692651	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:40:27	0
1608097	99	107	59,41	cyclictest	1646834	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:56:16	0
1608097	99	107	23,50	cyclictest	0	-21	swapper/0	23:43:42	0
1608097	99	105	73,23	cyclictest	0	-21	swapper/0	19:20:25	0
1608097	99	105	62,36	cyclictest	1792364	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:05:21	0
1608102	99	103	90,6	cyclictest	1692651	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:11:35	1
1608102	99	103	83,8	cyclictest	1822364	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:18:04	1
1608097	99	103	69,26	cyclictest	1822364	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	00:03:12	0
1608097	99	102	72,20	cyclictest	1629256	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:25:01	0
1608102	99	101	87,7	cyclictest	1670743	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:45:14	1
1608097	99	101	80,16	cyclictest	210	-21	kswapd0	00:30:26	0
1608097	99	101	80,16	cyclictest	210	-21	kswapd0	00:30:26	0
1608097	99	101	74,20	cyclictest	1899300	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	00:25:28	0
1608108	99	100	88,6	cyclictest	1664062	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:25:10	2
1608102	99	100	86,7	cyclictest	1804531	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:25:36	1
1608097	99	100	73,20	cyclictest	1822364	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:48:03	0
1608108	99	99	86,6	cyclictest	1869049	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	23:58:07	2
1608097	99	99	75,17	cyclictest	1848175	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:05:53	0
1608097	99	99	19,26	cyclictest	13	-21	ksoftirqd/0	21:23:23	0
1608097	99	99	19,26	cyclictest	13	-21	ksoftirqd/0	21:23:22	0
1608121	99	98	91,3	cyclictest	0	-21	swapper/5	23:48:03	5
1608108	99	98	85,6	cyclictest	1891114	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	00:28:49	2
1608097	99	98	71,19	cyclictest	1848175	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:38:30	0
1608097	99	98	71,19	cyclictest	1848175	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	23:38:29	0
1608097	99	97	70,20	cyclictest	1664062	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	21:30:11	0
1608102	99	96	82,7	cyclictest	1855769	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:53:05	1
1608097	99	96	70,19	cyclictest	1705548	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	22:05:17	0
1608108	99	95	81,7	cyclictest	1888586	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:10:14	2
1608097	99	95	67,20	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:35:11	0
1608097	99	95	1,76	cyclictest	1812924	-21	missed_timers	23:10:24	0
1608121	99	94	88,2	cyclictest	0	-21	swapper/5	21:30:11	5
1608097	99	94	65,20	cyclictest	0	-21	swapper/0	22:14:57	0
1608121	99	93	87,3	cyclictest	0	-21	swapper/5	00:03:12	5
1608108	99	93	80,6	cyclictest	1614486	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	19:29:34	2
1608108	99	93	79,7	cyclictest	1617873	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:44:51	2
1608102	99	93	77,9	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:50:29	1
1608102	99	93	77,9	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:50:29	1
1608097	99	93	44,25	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:58:14	0
1608097	99	93	44,25	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:58:13	0
1608097	99	93	2,74	cyclictest	0	-21	swapper/0	20:10:31	0
1608108	99	92	64,16	cyclictest	1652397	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:18:00	2
1608097	99	92	68,15	cyclictest	1608307	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	19:10:18	0
1608097	99	92	65,20	cyclictest	1891114	-21	kworker/u12:4+events_unbound@ flush_memcg_stats_dwork	00:14:41	0
1608097	99	92	41,24	cyclictest	1859065	-1	kworker/0:2H-mmc_complete	00:35:19	0
1608097	99	92	41,24	cyclictest	1859065	-1	kworker/0:2H-mmc_complete	00:35:19	0
1608097	99	92	39,42	cyclictest	1795134	-1	kworker/0:1H-events_highpri	23:00:34	0
1608121	99	91	85,3	cyclictest	0	-21	swapper/5	19:10:18	5
1608108	99	91	77,7	cyclictest	1822364	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:33:35	2
1608108	99	91	77,7	cyclictest	1822364	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:33:35	2
1608108	99	91	77,7	cyclictest	1822364	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	23:18:32	2
1608102	99	91	78,6	cyclictest	1752501	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	22:34:53	1
1608102	99	91	77,7	cyclictest	1848175	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	00:10:00	1
1608097	99	91	64,20	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	22:20:28	0
1608108	99	89	75,7	cyclictest	1761486	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:32:35	2
1608108	99	89	75,7	cyclictest	1646834	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:54:46	2
1608108	99	89	75,7	cyclictest	1646834	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	20:54:45	2
1608108	99	89	64,9	cyclictest	1925685	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:36:12	2
1608108	99	89	64,9	cyclictest	1925685	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	00:36:12	2
1608097	99	89	61,20	cyclictest	1670743	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:47:43	0
1608117	99	88	82,3	cyclictest	0	-21	swapper/4	22:40:26	4
1608108	99	88	76,6	cyclictest	1855769	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:52:15	2
1608108	99	88	75,6	cyclictest	1652397	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:20:07	2
1608108	99	88	75,6	cyclictest	1652397	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	21:20:07	2
1608108	99	88	73,8	cyclictest	1646834	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:05:24	2
1608108	99	88	73,8	cyclictest	1636120	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:25:23	2
1608097	99	88	57,16	cyclictest	0	-21	swapper/0	19:15:35	0
1608097	99	88	57,16	cyclictest	0	-21	swapper/0	19:15:35	0
1608097	99	88	53,23	cyclictest	689	50	irq/527-eth0-Tx	20:25:31	0
1608097	99	88	48,25	cyclictest	0	-21	swapper/0	19:10:01	0
1608097	99	87	55,22	cyclictest	689	50	irq/527-eth0-Tx	21:00:16	0
1608097	99	87	1,74	cyclictest	0	-21	swapper/0	19:45:37	0
1608097	99	87	1,74	cyclictest	0	-21	swapper/0	19:45:37	0
1608108	99	86	72,7	cyclictest	1636120	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:38:47	2
1608108	99	86	72,7	cyclictest	1636120	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	20:38:47	2
1608108	99	86	62,9	cyclictest	1792364	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:57:40	2
1608108	99	86	62,9	cyclictest	1792364	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	22:57:40	2
1608102	99	86	65,7	cyclictest	1670743	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	21:44:25	1
1608097	99	86	62,14	cyclictest	1617873	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	19:44:04	0
1608097	99	86	59,19	cyclictest	1728275	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	23:27:34	0
1608097	99	86	59,18	cyclictest	1692651	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:53:12	0
1608097	99	86	59,18	cyclictest	1692651	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	21:53:11	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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