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 highest latencies:

System rack5slot7s.osadl.org (updated Sun May 17, 2026 12:45:09)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
10177	2	2433	2199,89	sleep0	0	-21	swapper	07:06:40	0
10595	99	166	15,48	cyclictest	16560	-21	apt-get	07:46:15	0
10595	99	163	39,22	cyclictest	6135	-21	timerandwakeup	09:56:08	0
10595	99	163	15,25	cyclictest	22113	-21	apt-get	11:35:18	0
10595	99	163	14,25	cyclictest	19605	-21	apt	11:20:01	0
10595	99	162	14,118	cyclictest	7193	-21	/usr/sbin/munin	10:05:57	0
10595	99	161	28,111	cyclictest	3585	-21	head	09:41:04	0
10595	99	160	15,122	cyclictest	4619	-21	apt-get	09:50:27	0
10595	99	160	14,123	cyclictest	11400	-21	munin-node	07:15:05	0
10595	99	160	14,123	cyclictest	11110	-21	apt-get	10:31:14	0
10595	99	158	9,119	cyclictest	22811	-21	apt-get	11:41:51	0
10595	99	157	32,21	cyclictest	23964	-21	apt-get	11:45:18	0
10595	99	157	15,118	cyclictest	12537	-21	munin-run	07:20:02	0
10595	99	157	13,120	cyclictest	22404	-21	munin-run	08:20:02	0
10595	99	157	12,25	cyclictest	9226	-21	systemctl	10:15:58	0
10595	99	156	31,24	cyclictest	12952	-21	modprobe	10:40:01	0
10595	99	156	18,24	cyclictest	28759	-21	apt-get	12:15:19	0
10595	99	156	17,108	cyclictest	32216	-21	memory	12:35:44	0
10595	99	156	14,118	cyclictest	24013	-21	munin-plugin-st	08:30:01	0
10595	99	156	12,103	cyclictest	20987	-21	/usr/sbin/munin	11:25:58	0
10595	99	155	44,23	cyclictest	27826	-21	swap	08:50:58	0
10595	99	155	39,23	cyclictest	9933	-21	ntp_states	10:20:50	0
10595	99	155	14,39	cyclictest	26335	-21	cat	12:00:06	0
10595	99	155	12,101	cyclictest	17942	-21	/usr/sbin/munin	11:12:11	0
10595	99	154	21,27	cyclictest	25844	-21	diskstats	08:40:34	0
10595	99	154	13,27	cyclictest	28419	-21	ntpq	08:55:50	0
10595	99	154	11,25	cyclictest	26837	-21	sshd	12:00:57	0
10595	99	153	21,106	cyclictest	19303	-21	apt-get	08:00:22	0
10595	99	153	16,50	cyclictest	30387	-21	apt-get	12:25:12	0
10595	99	153	15,118	cyclictest	27220	-21	apt	08:50:01	0
10595	99	153	12,118	cyclictest	18938	-21	cut	07:55:56	0
10595	99	152	34,17	cyclictest	0	-21	swapper	09:00:46	0
10595	99	152	20,105	cyclictest	31327	-21	apt-get	09:15:20	0
10595	99	152	14,114	cyclictest	22524	-21	apt-get	08:20:13	0
10595	99	151	40,20	cyclictest	14251	-21	processes	10:45:54	0
10595	99	151	30,101	cyclictest	17688	-21	apt-get	07:50:18	0
10595	99	151	17,36	cyclictest	25613	-21	munin-run	08:40:02	0
10595	99	151	12,99	cyclictest	30772	-21	memory	09:10:43	0
10595	99	151	11,115	cyclictest	3766	-21	egrep	09:45:22	0
10595	99	150	9,23	cyclictest	8366	-21	processes	10:10:57	0
10595	99	150	20,27	cyclictest	12767	-21	diskstats	07:20:32	0
10595	99	150	13,111	cyclictest	16128	-21	cat	07:40:48	0
10595	99	150	10,116	cyclictest	20042	-21	snmpd	11:21:03	0
10595	99	150	10,115	cyclictest	30214	-21	sed	12:21:02	0
10595	99	149	18,105	cyclictest	398	-21	apt-get	09:24:53	0
10595	99	149	15,111	cyclictest	16155	-21	munin-run	11:00:01	0
10595	99	149	14,111	cyclictest	2082	-21	grep	09:35:04	0
10595	99	149	13,114	cyclictest	24756	-21	apt-get	11:50:11	0
10595	99	149	12,113	cyclictest	28705	-21	wc	12:15:03	0
10595	99	149	11,116	cyclictest	24217	-21	df_inode	08:30:28	0
10595	99	149	11,114	cyclictest	11150	-21	latency_hist	10:30:06	0
10595	99	148	8,115	cyclictest	17333	-21	grep	11:05:46	0
10595	99	148	33,94	cyclictest	16990	-21	latency_hist	11:05:03	0
10595	99	148	10,38	cyclictest	13528	-21	ls	07:25:25	0
10595	99	147	38,90	cyclictest	30028	-21	ntp_kernel_pll_	09:05:47	0
10595	99	147	17,107	cyclictest	27408	-21	memory	12:05:41	0
10595	99	147	13,24	cyclictest	7032	-21	head	10:01:04	0
10595	99	147	13,23	cyclictest	2780	-21	unixbench_singl	09:36:04	0
10595	99	147	12,26	cyclictest	15148	-21	/usr/sbin/munin	10:50:57	0
10595	99	147	12,110	cyclictest	21566	-21	sshd	08:11:11	0
10595	99	146	16,38	cyclictest	1241	-21	apt	09:30:01	0
10595	99	146	13,110	cyclictest	13751	-21	modprobe	10:45:01	0
10595	99	145	27,97	cyclictest	15042	-21	apt-get	07:35:13	0
10595	99	144	8,113	cyclictest	20042	-21	snmpd	07:30:56	0
10595	99	144	25,21	cyclictest	0	-21	swapper	08:05:38	0
10595	99	144	16,27	cyclictest	21558	-21	memory	11:30:45	0
10595	99	143	18,21	cyclictest	31292	-21	diskstats	12:30:33	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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