OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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: 50.5 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 792 highest latencies:

System rack5slot7s.osadl.org (updated Sat Jan 10, 2026 00:45:08)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2544	2	2425	2167,97	sleep0	0	-21	swapper	19:09:48	0
2611	99	165	22,115	cyclictest	5957	-21	apt-get	22:50:32	0
2611	99	163	12,124	cyclictest	7735	-21	/usr/sbin/munin	23:00:47	0
2611	99	161	17,22	cyclictest	12135	-21	apt-get	20:06:59	0
2611	99	159	17,119	cyclictest	3596	-21	df	19:15:21	0
2611	99	158	10,123	cyclictest	13618	-21	ntpq	23:35:45	0
2611	99	157	28,21	cyclictest	0	-21	swapper	23:30:01	0
2611	99	156	18,20	cyclictest	0	-21	swapper	21:40:45	0
2611	99	156	15,114	cyclictest	24390	-21	apt-get	21:26:29	0
2611	99	155	32,34	cyclictest	109	-21	systemd-journal	20:17:01	0
2611	99	155	32,25	cyclictest	20454	-21	sh	00:20:01	0
2611	99	155	19,108	cyclictest	6727	-21	diskstats	19:35:33	0
2611	99	155	15,116	cyclictest	19664	-21	apt-get	20:55:18	0
2611	99	155	12,29	cyclictest	31769	-21	unixbench_singl	22:06:01	0
2611	99	154	16,115	cyclictest	17246	-21	munin-run	00:00:03	0
2611	99	154	15,116	cyclictest	10103	-21	sort	23:15:05	0
2611	99	154	15,115	cyclictest	16032	-21	wc	20:30:54	0
2611	99	154	15,113	cyclictest	18080	-21	apt-get	20:45:19	0
2611	99	154	13,115	cyclictest	15748	-21	/usr/sbin/munin	23:50:33	0
2611	99	153	42,91	cyclictest	15441	-21	mailstats	23:45:57	0
2611	99	153	16,23	cyclictest	7088	-21	irqstats	22:55:46	0
2611	99	153	15,117	cyclictest	3402	-21	apt-get	19:15:02	0
2611	99	153	13,118	cyclictest	22068	-21	/usr/sbin/munin	21:10:59	0
2611	99	153	10,118	cyclictest	18753	-21	sort	00:06:01	0
2611	99	152	9,118	cyclictest	24123	-21	find	21:20:54	0
2611	99	152	41,91	cyclictest	21100	-21	unixbench_singl	21:01:02	0
2611	99	152	16,113	cyclictest	14355	-21	/usr/sbin/munin	20:20:45	0
2611	99	152	15,21	cyclictest	21414	-21	apt-get	00:25:25	0
2611	99	152	14,114	cyclictest	5336	-21	memory	22:45:42	0
2611	99	152	12,115	cyclictest	9819	-21	/usr/sbin/munin	19:55:55	0
2611	99	152	12,115	cyclictest	23572	-21	latency_hist	21:20:01	0
2611	99	152	11,25	cyclictest	29512	-21	/usr/sbin/munin	21:55:33	0
2611	99	151	15,112	cyclictest	17163	-21	munin-run	20:40:02	0
2611	99	151	14,23	cyclictest	10192	-21	ls	23:15:24	0
2611	99	151	14,115	cyclictest	8130	-21	apt	19:45:03	0
2611	99	151	13,20	cyclictest	22402	-21	/usr/sbin/munin	00:31:15	0
2611	99	151	12,115	cyclictest	19502	-21	sed	20:51:02	0
2611	99	150	16,36	cyclictest	978	-21	munin-run	22:20:03	0
2611	99	150	16,111	cyclictest	27009	-21	munin-run	21:40:03	0
2611	99	150	14,109	cyclictest	12540	-21	apt-get	23:30:19	0
2611	99	150	12,97	cyclictest	14332	-21	irqstats	23:40:37	0
2611	99	150	12,25	cyclictest	5394	-21	grep	19:25:54	0
2611	99	149	18,105	cyclictest	14878	-21	apt-get	20:25:16	0
2611	99	149	17,109	cyclictest	17932	-21	sed	20:41:01	0
2611	99	149	16,24	cyclictest	1892	-21	apt-get	22:25:17	0
2611	99	149	14,22	cyclictest	17465	-21	df	00:00:26	0
2611	99	149	12,113	cyclictest	9221	-21	apt	23:10:01	0
2611	99	148	34,19	cyclictest	31924	-21	apt-get	22:10:12	0
2611	99	148	19,27	cyclictest	20583	-21	apt-get	00:20:21	0
2611	99	148	17,26	cyclictest	8924	-21	latency_hist	19:50:04	0
2611	99	148	17,24	cyclictest	28717	-21	apt-get	21:50:18	0
2611	99	148	13,111	cyclictest	27921	-21	/usr/sbin/munin	21:45:10	0
2611	99	148	13,109	cyclictest	1095	-21	/usr/sbin/munin	22:20:46	0
2611	99	148	12,25	cyclictest	4307	-21	cstates	19:20:28	0
2611	99	147	17,104	cyclictest	25517	-21	apt-get	21:30:24	0
2611	99	147	15,23	cyclictest	2797	-21	diskstats	22:30:30	0
2611	99	146	19,103	cyclictest	10950	-21	apt-get	23:20:18	0
2611	99	146	18,27	cyclictest	23435	-21	memory	00:35:43	0
2611	99	146	13,23	cyclictest	9130	-21	df_inode	19:50:28	0
2611	99	145	16,27	cyclictest	6241	-21	grep	19:30:55	0
2611	99	145	15,104	cyclictest	4304	-21	apt-get	22:40:19	0
2611	99	145	14,107	cyclictest	30509	-21	irqstats	22:00:35	0
2611	99	145	13,47	cyclictest	19697	-21	grep	00:15:04	0
2611	99	144	33,18	cyclictest	3846	-21	grep	22:35:55	0
2611	99	144	17,25	cyclictest	21934	-21	users	21:06:05	0
2611	99	143	13,109	cyclictest	11065	-21	fgrep	20:00:56	0
2611	99	142	26,21	cyclictest	0	-21	swapper	20:10:55	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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