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 #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 50 highest latencies:

System rack3slot4.osadl.org (updated Wed Apr 15, 2026 12:46:38)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
627080	2	1195	1168,16	sleep4	0	-21	swapper/4	07:05:15	4
628884	99	183	57,43	cyclictest	661289	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:36:35	0
628884	99	155	68,17	cyclictest	830881	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:25:35	0
628884	99	155	68,17	cyclictest	830881	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:25:34	0
628884	99	144	78,51	cyclictest	777853	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:28:56	0
628884	99	135	57,49	cyclictest	764115	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:19:33	0
628884	99	132	66,42	cyclictest	771216	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:16:34	0
628884	99	125	75,42	cyclictest	777853	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:06:06	0
628889	99	124	112,6	cyclictest	804293	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:58:59	1
628889	99	124	112,6	cyclictest	729584	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:08:52	1
628884	99	123	100,15	cyclictest	630718	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	08:03:37	0
628884	99	123	100,15	cyclictest	630718	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	08:03:37	0
628884	99	119	10,96	cyclictest	787949	-21	ntpq	10:35:35	0
628884	99	119	10,96	cyclictest	787949	-21	ntpq	10:35:34	0
628884	99	117	49,46	cyclictest	677970	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:14:20	0
628884	99	114	91,15	cyclictest	669227	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:18:45	0
628884	99	113	48,42	cyclictest	620590	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:12:22	0
628884	99	113	48,42	cyclictest	620590	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:12:22	0
628884	99	113	44,45	cyclictest	777853	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:13:31	0
628884	99	112	88,16	cyclictest	669227	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:03:44	0
628884	99	112	58,27	cyclictest	771216	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:21:05	0
628884	99	111	8,86	cyclictest	662198	-21	memory	08:30:24	0
628884	99	111	42,5	cyclictest	692	50	irq/530-eth0-Tx	09:35:03	0
628884	99	111	42,5	cyclictest	692	50	irq/530-eth0-Tx	09:35:03	0
628908	99	110	104,3	cyclictest	0	-21	swapper/5	08:03:37	5
628908	99	110	104,3	cyclictest	0	-21	swapper/5	08:03:37	5
628889	99	110	98,6	cyclictest	721817	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:13:53	1
628884	99	110	7,79	cyclictest	0	-21	swapper/0	07:35:31	0
628884	99	110	64,38	cyclictest	796217	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:47:34	0
628884	99	110	64,38	cyclictest	796217	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:47:34	0
628884	99	109	9,83	cyclictest	0	-21	swapper/0	07:45:01	0
628884	99	109	66,40	cyclictest	920319	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:19:44	0
628884	99	109	44,41	cyclictest	882826	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:11:13	0
628884	99	109	44,41	cyclictest	882826	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	12:11:12	0
628884	99	107	7,84	cyclictest	0	-21	swapper/0	07:30:01	0
628884	99	107	7,84	cyclictest	0	-21	swapper/0	07:30:01	0
628884	99	106	85,14	cyclictest	657124	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:28:40	0
628889	99	105	92,6	cyclictest	721817	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:03:52	1
628884	99	104	80,16	cyclictest	669227	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:50:25	0
628884	99	104	7,92	cyclictest	0	-21	swapper/0	08:05:20	0
628899	99	103	82,7	cyclictest	804293	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:48:55	3
628899	99	103	82,7	cyclictest	804293	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:48:54	3
628889	99	103	64,7	cyclictest	906816	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:08:11	1
628889	99	103	64,7	cyclictest	906816	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	12:08:10	1
628884	99	103	69,25	cyclictest	690	50	irq/528-eth0-Tx	07:30:18	0
628884	99	103	41,38	cyclictest	210	-21	kswapd0	09:30:06	0
628884	99	102	7,59	cyclictest	0	-21	swapper/0	12:39:29	0
628908	99	101	95,3	cyclictest	0	-21	swapper/5	11:29:01	5
628908	99	101	95,3	cyclictest	0	-21	swapper/5	11:29:00	5
628889	99	101	87,7	cyclictest	661289	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:35:34	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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