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 100 highest latencies:

System rack3slot4.osadl.org (updated Sun Feb 15, 2026 12:46:25)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
26173	99	147	65,63	cyclictest	322348	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:35:13	0
26178	99	144	129,8	cyclictest	35937	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:49:25	1
26173	99	134	2,54	cyclictest	0	-21	swapper/0	12:25:15	0
26190	99	132	118,7	cyclictest	112219	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	10:09:49	3
26173	99	128	23,76	cyclictest	35937	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	07:33:54	0
26173	99	124	57,59	cyclictest	202042	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:01:33	0
26173	99	120	30,58	cyclictest	74842	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:11:34	0
327131	2	118	0,6	sleep1	0	-21	swapper/1	12:35:26	1
26173	99	118	74,37	cyclictest	161292	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:44:46	0
26173	99	118	22,48	cyclictest	74842	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:30:28	0
26178	99	116	103,6	cyclictest	229034	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:35:01	1
26173	99	115	36,60	cyclictest	13	-21	ksoftirqd/0	09:50:00	0
26173	99	115	2,92	cyclictest	220649	-21	base64	11:10:01	0
26173	99	115	20,64	cyclictest	62718	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:44:49	0
26173	99	114	76,31	cyclictest	112219	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:53:33	0
26173	99	113	21,39	cyclictest	239156	-21	latency_hist	11:25:02	0
26173	99	112	66,29	cyclictest	104997	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:35:40	0
26173	99	112	66,29	cyclictest	104997	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:35:39	0
26173	99	109	2,90	cyclictest	0	-21	swapper/0	07:15:43	0
26173	99	109	2,83	cyclictest	0	-21	swapper/0	12:15:42	0
26190	99	108	59,13	cyclictest	161292	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:46:47	3
26190	99	108	59,13	cyclictest	161292	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	10:46:46	3
26178	99	108	96,6	cyclictest	220399	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:10:17	1
26178	99	106	92,7	cyclictest	145420	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:14:50	1
26178	99	106	92,7	cyclictest	145420	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	10:14:49	1
26173	99	106	2,56	cyclictest	276189	-21	cron	11:55:00	0
26173	99	105	30,15	cyclictest	690	50	irq/528-eth0-Tx	11:55:31	0
26173	99	105	30,15	cyclictest	690	50	irq/528-eth0-Tx	11:55:31	0
26173	99	105	2,48	cyclictest	78587	-1	kworker/0:0H+mmc_complete@ mmc_blk_mq_complete_work	10:40:01	0
26173	99	105	24,21	cyclictest	289751	-21	ssh	12:05:24	0
26173	99	105	24,21	cyclictest	289751	-21	ssh	12:05:24	0
26178	99	104	81,8	cyclictest	220399	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:09:57	1
26173	99	104	78,19	cyclictest	202042	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:11:34	0
26173	99	103	21,50	cyclictest	31819	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:41:21	0
261103	2	103	0,4	sleep3	0	-21	swapper/3	11:42:00	3
26190	99	102	91,4	cyclictest	74842	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:24:39	3
26185	99	102	88,7	cyclictest	74842	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:39:45	2
26185	99	102	88,7	cyclictest	74842	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:39:44	2
26185	99	102	88,7	cyclictest	251388	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:55:01	2
26173	99	102	65,30	cyclictest	251388	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	11:42:13	0
26173	99	102	62,31	cyclictest	22395	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	07:10:26	0
26173	99	102	61,32	cyclictest	44205	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:55:25	0
26173	99	102	27,12	cyclictest	690	50	irq/528-eth0-Tx	12:00:45	0
26173	99	102	2,46	cyclictest	265958	-21	sort	11:45:43	0
26185	99	101	86,7	cyclictest	72341	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	09:14:38	2
26173	99	101	65,28	cyclictest	58208	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:59:36	0
26173	99	101	2,47	cyclictest	308703	-21	needreboot	12:20:27	0
26173	99	100	66,30	cyclictest	210	-21	kswapd0	10:45:26	0
26173	99	100	66,30	cyclictest	210	-21	kswapd0	10:45:25	0
26173	99	100	32,23	cyclictest	97135	-21	apt	09:30:00	0
26173	99	100	2,52	cyclictest	321403	-21	cut	12:30:41	0
26190	99	98	84,7	cyclictest	44205	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:04:29	3
26173	99	98	28,47	cyclictest	127095	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:55:17	0
26190	99	97	83,7	cyclictest	127095	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:01:00	3
26185	99	97	82,8	cyclictest	241410	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:35:35	2
26178	99	97	83,7	cyclictest	88254	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:44:46	1
26178	99	97	83,7	cyclictest	88254	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:44:45	1
26173	99	97	15,31	cyclictest	0	-21	swapper/0	10:22:34	0
26173	99	97	1,51	cyclictest	86125	-21	needreboot	09:20:27	0
26190	99	96	81,8	cyclictest	119901	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:59:47	3
26173	99	96	7,14	cyclictest	136400	-21	ssh	10:00:43	0
26173	99	96	2,6	cyclictest	146051	-21	ssh	10:09:32	0
26173	99	96	20,16	cyclictest	166649	-21	ssh	10:25:33	0
26173	99	96	1,90	cyclictest	0	-21	swapper/0	08:25:36	0
26173	99	96	1,45	cyclictest	0	-21	swapper/0	09:15:35	0
26173	99	96	10,32	cyclictest	690	50	irq/528-eth0-Tx	10:33:07	0
26190	99	95	80,7	cyclictest	58208	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	09:02:36	3
26173	99	95	43,44	cyclictest	58208	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:50:35	0
26173	99	95	43,44	cyclictest	58208	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:50:34	0
26190	99	94	80,7	cyclictest	62718	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	08:44:35	3
26173	99	93	44,26	cyclictest	212804	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	11:29:41	0
26173	99	93	20,18	cyclictest	689	50	irq/527-eth0-Tx	10:55:33	0
26190	99	92	78,7	cyclictest	31819	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:44:24	3
26173	99	92	58,26	cyclictest	241410	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:36:13	0
26173	99	92	40,44	cyclictest	229034	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	11:30:17	0
26173	99	92	22,36	cyclictest	690	50	irq/528-eth0-Tx	10:15:31	0
26190	99	91	77,7	cyclictest	20417	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:29:23	3
26190	99	91	77,7	cyclictest	20417	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:29:23	3
26190	99	91	76,7	cyclictest	44205	-21	kworker/u12:1+events_unbound@ flush_memcg_stats_dwork	07:56:34	3
26190	99	91	70,8	cyclictest	284889	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:10:37	3
26173	99	91	39,44	cyclictest	127095	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:51:31	0
26173	99	91	39,44	cyclictest	127095	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:51:30	0
26173	99	91	24,20	cyclictest	0	-21	swapper/0	08:35:13	0
26190	99	90	75,8	cyclictest	276208	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	12:15:04	3
26190	99	90	74,8	cyclictest	202042	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	11:14:58	3
26185	99	90	65,9	cyclictest	88254	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	09:26:30	2
26173	99	90	2,46	cyclictest	109992	-21	/usr/sbin/munin	09:40:21	0
26173	99	90	2,46	cyclictest	109992	-21	/usr/sbin/munin	09:40:20	0
26173	99	90	2,15	cyclictest	56310	-21	latency_hist	08:25:01	0
26185	99	89	75,7	cyclictest	20417	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:24:22	2
26173	99	89	2,47	cyclictest	0	-21	swapper/0	07:25:27	0
26173	99	89	2,47	cyclictest	0	-21	swapper/0	07:25:27	0
26190	99	88	74,7	cyclictest	127095	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:54:55	3
26190	99	88	74,7	cyclictest	127095	-21	kworker/u12:3+events_unbound@ flush_memcg_stats_dwork	10:54:54	3
26190	99	88	73,8	cyclictest	322348	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	12:36:21	3
26190	99	88	73,7	cyclictest	41887	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:53:36	3
26190	99	88	73,7	cyclictest	20417	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	07:30:27	3
26190	99	88	73,7	cyclictest	112219	-21	kworker/u12:2+events_unbound@ flush_memcg_stats_dwork	09:49:54	3
26173	99	88	52,28	cyclictest	58208	-21	kworker/u12:0+events_unbound@ flush_memcg_stats_dwork	08:49:34	0
26173	99	88	21,21	cyclictest	0	-21	swapper/0	10:10:24	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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