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Default latency plot of system in rack #0, slot #2

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 rack0slot2.osadl.org (updated Wed Apr 22, 2026 00:43:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3095171	2	95	0,1	sleep7	3095172	-21	rm	21:30:45	7
3315574	2	92	0,1	sleep7	0	-21	swapper/7	23:04:45	7
3128743	2	54	0,0	sleep6	0	-21	swapper/6	21:44:54	6
2803034	99	49	43,5	cyclictest	3121356	-21	latency_hist	21:44:32	7
2802606	2	44	34,7	sleep5	0	-21	swapper/5	19:07:25	5
2802524	2	41	1,35	sleep7	0	-21	swapper/7	19:06:15	7
2802747	2	32	22,7	sleep4	0	-21	swapper/4	19:09:25	4
2802740	2	30	19,8	sleep6	0	-21	swapper/6	19:09:19	6
2803034	99	29	28,0	cyclictest	0	-21	swapper/7	19:59:49	7
2803034	99	27	16,9	cyclictest	635	-21	systemd-journal	23:59:30	7
2803033	99	24	22,2	cyclictest	3387383	-21	kworker/u16:3+flush-8:0	00:20:28	6
2803024	99	24	20,3	cyclictest	3336695	-21	kworker/u16:0+flush-8:0	23:54:32	4
2803034	99	23	20,2	cyclictest	3458230	-21	sh	00:01:07	7
2803034	99	23	20,2	cyclictest	3458230	-21	sh	00:01:07	7
2803034	99	22	0,20	cyclictest	3423825	-21	latency_hist	23:49:31	7
2803033	99	22	20,2	cyclictest	3375656	-21	kworker/u16:2+events_unbound	23:35:05	6
2803033	99	22	20,2	cyclictest	2719700	-21	kworker/u16:1+events_unbound	19:19:37	6
2803024	99	22	20,2	cyclictest	3448385	-21	kworker/u16:1+events_unbound	00:02:48	4
2803024	99	22	20,2	cyclictest	3448385	-21	kworker/u16:1+events_unbound	00:02:48	4
2803024	99	22	19,2	cyclictest	2864373	-21	kworker/u16:3+flush-8:0	19:49:37	4
2803033	99	21	19,2	cyclictest	2999496	-21	kworker/u16:3+events_unbound	21:25:01	6
2803033	99	21	19,2	cyclictest	2950413	-21	kworker/u16:4+flush-8:0	21:19:56	6
2803033	99	21	19,2	cyclictest	2864373	-21	kworker/u16:3+events_unbound	20:09:45	6
2803034	99	20	16,3	cyclictest	1234	-21	snmpd	00:11:43	7
2803034	99	20	0,18	cyclictest	3472301	-21	cat	00:09:31	7
2803033	99	20	18,2	cyclictest	3469792	-21	kworker/u16:0+flush-8:0	00:35:00	6
2803033	99	20	18,2	cyclictest	2719700	-21	kworker/u16:1+events_unbound	19:14:34	6
2803034	99	19	13,5	cyclictest	3145561	-21	latency_hist	21:54:31	7
2803033	99	19	17,2	cyclictest	3314730	-21	kworker/u16:4+events_unbound	23:24:45	6
2803033	99	19	17,2	cyclictest	3058550	-21	kworker/u16:0+flush-8:0	22:14:46	6
2803034	99	18	15,2	cyclictest	1234	-21	snmpd	22:49:14	7
2803034	99	18	14,3	cyclictest	1234	-21	snmpd	22:59:14	7
2803034	99	18	13,4	cyclictest	3375233	-21	latency_hist	23:29:31	7
2803034	99	18	0,1	cyclictest	0	-21	swapper/7	20:09:55	7
2803033	99	18	16,2	cyclictest	2774584	-21	kworker/u16:2+events_unbound	19:44:54	6
2803033	99	18	16,2	cyclictest	2719700	-21	kworker/u16:1+events_unbound	19:25:25	6
2803024	99	18	15,2	cyclictest	3519644	-21	kworker/u16:1+flush-8:0	00:29:51	4
2803024	99	18	14,3	cyclictest	3194147	-21	kworker/u16:1+flush-8:0	23:14:49	4
2803034	99	17	9,7	cyclictest	6895	-21	gmain	19:44:56	7
2803034	99	17	15,1	cyclictest	0	-21	swapper/7	23:39:49	7
2803034	99	17	13,3	cyclictest	1234	-21	snmpd	19:26:42	7
2803034	99	17	12,4	cyclictest	3218061	-21	latency_hist	22:24:32	7
2803034	99	17	0,1	cyclictest	0	-21	swapper/7	19:34:55	7
2803034	99	17	0,15	cyclictest	3254339	-21	latency_hist	22:39:31	7
2803033	99	17	15,2	cyclictest	3469792	-21	kworker/u16:0+flush-8:0	00:14:47	6
2803033	99	17	15,2	cyclictest	3112133	-21	kworker/u16:2+events_unbound	21:39:50	6
2803033	99	17	15,2	cyclictest	3058550	-21	kworker/u16:0+events_unbound	21:35:13	6
2803033	99	17	15,2	cyclictest	3058550	-21	kworker/u16:0+events_unbound	21:29:45	6
2803033	99	17	15,2	cyclictest	2950413	-21	kworker/u16:4+flush-8:0	21:10:00	6
2803029	99	17	14,3	cyclictest	3469792	-21	kworker/u16:0+flush-8:0	00:09:31	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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