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Default latency plot of system in rack #e, slot #6

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 50 highest latencies:

System rackeslot6.osadl.org (updated Mon Jul 20, 2026 00:44:54)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3806789	99	183	171,8	cyclictest	3895536	-21	kworker/u8:3+events_unbound	00:00:01	0
3806789	99	143	136,4	cyclictest	3895536	-21	kworker/u8:3+events_unbound	00:25:01	0
3806789	99	143	136,4	cyclictest	3895536	-21	kworker/u8:3+events_unbound	00:25:00	0
3806791	99	138	129,7	cyclictest	3837169	-21	latency_hist	20:45:01	1
3806789	99	138	133,3	cyclictest	3873186	-21	kworker/u8:2+events_unbound	23:00:00	0
3806789	99	138	132,4	cyclictest	3873186	-21	kworker/u8:2+events_unbound	22:55:00	0
3806789	99	138	120,7	cyclictest	3880877	-21	kworker/u8:0+events_unbound	23:00:25	0
3806791	99	134	122,9	cyclictest	510	-21	rs:main		1
3806789	99	134	126,4	cyclictest	3852242	-21	kworker/u8:0+events_unbound	21:40:24	0
3806789	99	134	123,8	cyclictest	3869777	-21	latency_hist	22:25:01	0
3806789	99	133	126,5	cyclictest	3837202	-21	kworker/u8:3+flush-179:0	21:05:00	0
3806789	99	131	126,3	cyclictest	3828243	-21	kworker/u8:0+flush-179:0	20:20:21	0
3806789	99	127	121,5	cyclictest	3806625	-21	kworker/u8:0+events_unbound	19:35:01	0
3806789	99	127	119,6	cyclictest	3885086	-21	kworker/u8:1+events_unbound	23:25:00	0
3806789	99	126	115,8	cyclictest	3841963	-21	latency_hist	21:00:01	0
3806791	99	123	112,8	cyclictest	3866579	-21	latency_hist	22:15:01	1
3806789	99	123	117,5	cyclictest	3880877	-21	kworker/u8:0+events_unbound	23:49:59	0
3806789	99	123	114,7	cyclictest	3895536	-21	kworker/u8:3+flush-179:0	00:00:23	0
3806791	99	120	112,5	cyclictest	3885086	-21	kworker/u8:1+events_unbound	23:15:24	1
3806789	99	120	114,4	cyclictest	484	-21	dbus-daemon	21:25:00	0
3806789	99	120	110,7	cyclictest	3903510	-21	latency_hist	00:10:01	0
3806789	99	119	114,3	cyclictest	3809894	-21	kworker/u8:2+flush-179:0	19:55:22	0
3806789	99	119	108,8	cyclictest	3833957	-21	kworker/u8:1+flush-179:0	20:50:21	0
3806789	99	118	107,8	cyclictest	3809841	-21	latency_hist	19:20:01	0
3806789	99	117	110,4	cyclictest	3908277	-21	kworker/u8:0+events_unbound	00:30:17	0
3806789	99	117	107,7	cyclictest	3906699	-21	latency_hist	00:20:02	0
3806789	99	116	111,4	cyclictest	3855166	-21	kworker/u8:1+flush-179:0	22:30:01	0
3806789	99	116	111,4	cyclictest	3855166	-21	kworker/u8:1+flush-179:0	22:30:01	0
3806789	99	116	108,5	cyclictest	3806625	-21	kworker/u8:0+events_unbound	19:45:18	0
3806789	99	115	109,4	cyclictest	3855166	-21	kworker/u8:1+events_unbound	22:10:26	0
3806789	99	114	108,4	cyclictest	3852242	-21	kworker/u8:0+flush-179:0	22:00:20	0
3806789	99	114	108,4	cyclictest	3852242	-21	kworker/u8:0+flush-179:0	22:00:19	0
3806789	99	114	107,4	cyclictest	3909863	-21	kworker/u8:1+events_unbound	00:35:20	0
3806789	99	113	102,7	cyclictest	3855166	-21	kworker/u8:1+events_unbound	22:35:19	0
3806791	99	112	102,7	cyclictest	3829211	-21	latency_hist	20:20:02	1
3806789	99	112	107,4	cyclictest	3833957	-21	kworker/u8:1+events_unbound	21:20:01	0
3806789	99	112	102,7	cyclictest	3824436	-21	latency_hist	20:05:00	0
3806791	99	111	107,2	cyclictest	3855166	-21	kworker/u8:1+flush-179:0	21:50:16	1
3806791	99	111	102,6	cyclictest	3846964	-21	latency_hist	21:15:01	1
3806789	99	111	106,3	cyclictest	3821230	-21	kworker/u8:3+flush-179:0	20:25:23	0
3806789	99	111	105,4	cyclictest	3885086	-21	kworker/u8:1+flush-179:0	23:15:21	0
3806789	99	111	102,7	cyclictest	3890455	-21	kworker/u8:2+events_unbound	23:40:22	0
3806789	99	110	102,7	cyclictest	3809894	-21	kworker/u8:2+events_unbound	19:30:00	0
3806789	99	107	101,4	cyclictest	3849616	-21	kworker/u8:2+events_unbound	21:30:15	0
3806791	99	106	100,4	cyclictest	3809894	-21	kworker/u8:2+flush-179:0	20:10:25	1
3806789	99	106	96,7	cyclictest	3855166	-21	kworker/u8:1+events_unbound	22:45:19	0
3806789	99	106	101,4	cyclictest	3822894	-21	kworker/u8:0+flush-179:0	20:05:22	0
3806789	99	105	99,4	cyclictest	3809894	-21	kworker/u8:2+events_unbound	19:50:21	0
3806789	99	105	95,7	cyclictest	3837202	-21	kworker/u8:3+flush-179:0	21:10:22	0
3806789	99	104	99,4	cyclictest	3809894	-21	kworker/u8:2+flush-179:0	20:10:23	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2020-10-04 - 12:21