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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 Tue Jul 21, 2026 00:44:56)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2330743	99	144	134,6	cyclictest	2346534	-21	kworker/u8:3+flush-179:0	20:05:25	0
2330743	99	142	131,8	cyclictest	2400643	-21	latency_hist	22:45:01	0
2330748	99	138	129,7	cyclictest	2385694	-21	kworker/u8:2+flush-179:0	22:10:00	1
2330748	99	137	129,6	cyclictest	2353941	-21	kworker/u8:2+events_unbound	20:25:02	1
2330748	99	136	130,4	cyclictest	2385694	-21	kworker/u8:2+events_unbound	22:35:25	1
2330748	99	135	129,4	cyclictest	2359537	-21	kworker/u8:0+events_unbound	21:00:15	1
2330748	99	131	126,3	cyclictest	2405467	-21	kworker/u8:3+events_unbound	23:35:15	1
2330743	99	130	122,4	cyclictest	2346534	-21	kworker/u8:3+flush-179:0	20:00:24	0
2330748	99	128	122,4	cyclictest	2395583	-21	kworker/u8:1+events_unbound	22:45:15	1
2330748	99	128	118,7	cyclictest	2385543	-21	latency_hist	22:00:01	1
2330748	99	128	118,7	cyclictest	2385543	-21	latency_hist	22:00:01	1
2330743	99	128	122,4	cyclictest	2376354	-21	kworker/u8:0+events_unbound	22:15:01	0
2330748	99	127	123,3	cyclictest	2424822	-21	kworker/u8:2+events_unbound	00:05:23	1
2330748	99	126	115,8	cyclictest	2362979	-21	kworker/u8:2+flush-179:0	21:05:23	1
2330743	99	125	117,6	cyclictest	2370680	-21	kworker/u8:3+flush-179:0	21:15:24	0
2330748	99	124	119,4	cyclictest	2353941	-21	kworker/u8:2+events_unbound	20:30:23	1
2330748	99	124	119,4	cyclictest	2353941	-21	kworker/u8:2+events_unbound	20:30:23	1
2330743	99	123	106,12	cyclictest	1213033	-21	systemd-journal	19:30:15	0
2330748	99	122	117,4	cyclictest	2395583	-21	kworker/u8:1+events_unbound	22:40:25	1
2330743	99	122	116,4	cyclictest	2354588	-21	systemd-run	20:25:00	0
2330743	99	122	115,4	cyclictest	2405467	-21	kworker/u8:3+events_unbound	23:40:02	0
2330748	99	121	117,3	cyclictest	2421821	-21	kworker/u8:0+events_unbound	23:55:22	1
2330748	99	120	116,3	cyclictest	2346534	-21	kworker/u8:3+events_unbound	20:10:23	1
2330748	99	120	111,6	cyclictest	2362743	-21	latency_hist	20:50:01	1
2330743	99	119	110,6	cyclictest	2326151	-21	kworker/u8:0+flush-179:0	19:35:22	0
2330748	99	118	114,3	cyclictest	2344945	-21	kworker/u8:0+events_unbound	19:55:25	1
2330748	99	118	112,4	cyclictest	2402211	-21	kworker/u8:0+events_unbound	23:00:16	1
2330743	99	118	107,7	cyclictest	2394020	-21	latency_hist	22:25:01	0
2330748	99	117	113,3	cyclictest	2359537	-21	kworker/u8:0+events_unbound	20:50:25	1
2330743	99	117	111,4	cyclictest	2346534	-21	kworker/u8:3+events_unbound	20:35:01	0
2330743	99	117	111,4	cyclictest	2346534	-21	kworker/u8:3+events_unbound	20:35:01	0
2330743	99	117	104,6	cyclictest	2413628	-21	kworker/u8:1+events_unbound	23:30:00	0
2330743	99	116	89,8	cyclictest	2424804	-40	mandb	00:00:01	0
2330743	99	116	109,5	cyclictest	2410674	-21	kworker/u8:0+flush-179:0	23:20:22	0
2330743	99	116	109,5	cyclictest	2376354	-21	kworker/u8:0+flush-179:0	22:05:15	0
2330748	99	115	109,4	cyclictest	2405467	-21	kworker/u8:3+events_unbound	23:25:17	1
2330748	99	115	104,9	cyclictest	2346534	-21	kworker/u8:3+flush-179:0	20:35:23	1
2330743	99	115	103,9	cyclictest	2346534	-21	kworker/u8:3+events_unbound	20:00:00	0
2330748	99	114	109,4	cyclictest	2402211	-21	kworker/u8:0+events_unbound	22:50:24	1
2330743	99	112	103,6	cyclictest	2410674	-21	kworker/u8:0+flush-179:0	23:15:26	0
2330748	99	111	107,3	cyclictest	2359537	-21	kworker/u8:0+events_unbound	20:40:16	1
2330743	99	111	104,5	cyclictest	2365894	-21	kworker/u8:1+flush-179:0	21:10:00	0
2330748	99	110	106,3	cyclictest	2376354	-21	kworker/u8:0+events_unbound	22:15:24	1
2330748	99	110	103,5	cyclictest	2369140	-21	kworker/u8:0+flush-179:0	21:10:26	1
2330743	99	110	95,6	cyclictest	2326151	-21	kworker/u8:0+flush-179:0	19:25:01	0
2330743	99	110	103,4	cyclictest	2370680	-21	kworker/u8:3+events_unbound	21:20:24	0
2330743	99	109	102,5	cyclictest	2346534	-21	kworker/u8:3+flush-179:0	20:35:18	0
2330743	99	109	101,6	cyclictest	2395652	-21	kworker/u8:3+events_unbound	22:40:00	0
2330748	99	108	104,3	cyclictest	2405467	-21	kworker/u8:3+events_unbound	00:04:01	1
2330743	99	108	94,5	cyclictest	2330688	-21	kworker/u8:1+flush-179:0	19:20:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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