OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #4

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: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system

Characteristics of the 376 highest latencies:

System rackeslot4s.osadl.org (updated Mon Aug 24, 2026 00:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3029726	99	52	49,2	cyclictest	75	-21	kswapd0	00:35:03	3
3029722	99	48	43,3	cyclictest	75	-21	kswapd0	00:35:03	2
3029726	99	45	41,2	cyclictest	3164992	-21	apt-get	21:20:13	3
3029713	99	45	42,2	cyclictest	3268890	-21	apt-get	23:00:12	0
3029722	99	43	36,4	cyclictest	335557	-21	systemd-journal	19:25:14	2
3029713	99	43	38,3	cyclictest	3347374	-21	apt-get	00:15:12	0
3029713	99	39	36,2	cyclictest	3019701	-21	kworker/u8:2+flush-259:0	19:35:25	0
3029713	99	38	34,3	cyclictest	3102615	-21	apt-get	20:20:11	0
3029713	99	37	32,4	cyclictest	3242622	-21	apt-get	22:35:12	0
3029722	99	35	31,3	cyclictest	3029950	-21	apt-get	19:10:10	2
3029715	99	35	29,4	cyclictest	3263221	-21	cat	22:55:01	1
3029713	99	35	30,3	cyclictest	3133447	-21	gpgv	20:50:01	0
3029726	99	34	28,4	cyclictest	3144113	-21	latency_hist	21:00:00	3
3029715	99	34	29,3	cyclictest	3237445	-21	apt-get	22:30:10	1
3029713	99	34	31,2	cyclictest	3242384	-21	kworker/u8:0+flush-259:0	23:10:23	0
3029713	99	34	28,4	cyclictest	3326707	-21	apt-get	23:55:13	0
3029715	99	33	28,3	cyclictest	3055920	-21	apt-get	19:35:12	1
3029713	99	33	25,5	cyclictest	3205275	-21	ntpq	21:55:22	0
3029715	99	32	30,1	cyclictest	75	-21	kswapd0	00:35:02	1
3029713	99	32	28,3	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:40:24	0
3029722	99	31	26,4	cyclictest	3367842	-21	latency_hist	00:35:01	2
3029726	99	30	24,4	cyclictest	3310900	-21	latency_hist	23:40:01	3
3029713	99	30	25,3	cyclictest	3180471	-21	kworker/u8:2+flush-259:0	21:35:25	0
3029713	99	30	24,4	cyclictest	509	-21	rs:main		0
3029713	99	30	0,28	cyclictest	1	-21	systemd	22:34:59	0
3029726	99	29	25,3	cyclictest	3071537	-21	apt-get	19:50:11	3
3029722	99	29	24,4	cyclictest	3040310	-21	apt-get	19:20:12	2
3029713	99	29	26,2	cyclictest	3300355	-21	kworker/u8:0+events_unbound	00:00:26	0
3029713	99	29	21,6	cyclictest	335557	-21	systemd-journal	20:36:14	0
3029726	99	28	22,4	cyclictest	3284835	-21	cp	23:15:00	3
3029715	99	28	23,3	cyclictest	3154656	-21	apt-get	21:10:11	1
3029715	99	28	21,5	cyclictest	3279027	-21	latency_hist	23:10:01	1
3029726	99	27	23,3	cyclictest	3180474	-21	/usr/sbin/munin	21:35:16	3
3029722	99	26	21,4	cyclictest	509	-21	rs:main		2
3029722	99	26	21,3	cyclictest	3263592	-21	cat	22:55:01	2
3029715	99	26	20,4	cyclictest	3267790	-21	ntpq	22:55:24	1
3029713	99	26	22,3	cyclictest	3347153	-21	kworker/u8:1+flush-259:0	00:25:27	0
3029713	99	26	22,3	cyclictest	3216564	-21	kworker/u8:1+flush-259:0	22:10:25	0
3029713	99	26	22,3	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:10:16	0
3029713	99	26	20,5	cyclictest	3357339	-21	kworker/u8:2+flush-259:0	00:30:15	0
3029726	99	25	22,2	cyclictest	3071295	-21	kworker/u8:4+events_unbound	20:25:22	3
3029715	99	25	20,3	cyclictest	3305764	-21	kworker/u8:1+flush-259:0	23:45:11	1
3029715	99	25	18,5	cyclictest	335557	-21	systemd-journal	22:30:00	1
3029715	99	25	18,5	cyclictest	3216516	-21	latency_hist	22:10:01	1
3029715	99	25	18,4	cyclictest	3081683	-21	latency_hist	20:00:01	1
3029713	99	25	21,3	cyclictest	3331832	-21	kworker/u8:4+flush-259:0	00:20:25	0
3029713	99	25	21,3	cyclictest	3107521	-21	kworker/u8:0+events_unbound	20:35:00	0
3029713	99	25	19,4	cyclictest	3159973	-21	diskstats	21:15:15	0
3029726	99	24	21,2	cyclictest	3117857	-21	kworker/u8:1+events_unbound	20:45:15	3
3029726	99	24	20,3	cyclictest	3019701	-21	kworker/u8:2+flush-259:0	19:10:15	3
3029715	99	24	11,11	cyclictest	3342209	-21	apt-get	00:10:13	1
3029713	99	24	21,2	cyclictest	3180471	-21	kworker/u8:2+flush-259:0	22:00:24	0
3029713	99	24	21,2	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:00:15	0
3029713	99	24	20,3	cyclictest	3315860	-21	kworker/u8:2+events_unbound	23:44:16	0
3029713	99	24	20,3	cyclictest	3180471	-21	kworker/u8:2+flush-259:0	22:25:12	0
3029713	99	24	19,4	cyclictest	3357339	-21	kworker/u8:2+flush-259:0	00:38:45	0
3029713	99	24	17,5	cyclictest	3263760	-21	apt-get	22:55:13	0
3029726	99	23	20,2	cyclictest	3014400	-21	kworker/u8:1+flush-259:0	19:25:00	3
3029722	99	23	17,4	cyclictest	3175086	-21	latency_hist	21:30:00	2
3029713	99	23	19,3	cyclictest	3216564	-21	kworker/u8:1+events_unbound	22:40:17	0
3029713	99	23	19,3	cyclictest	3019701	-21	kworker/u8:2+flush-259:0	19:15:24	0
3029713	99	23	19,3	cyclictest	3014400	-21	kworker/u8:1+events_unbound	19:14:16	0
3029713	99	23	18,3	cyclictest	3232056	-21	kworker/u8:3+events_unbound	23:15:21	0
3029713	99	23	15,6	cyclictest	509	-21	rs:main		0
3029726	99	22	18,3	cyclictest	3148984	-21	kworker/u8:1+events_unbound	21:30:16	3
3029726	99	22	15,5	cyclictest	3158682	-21	ntpq	21:10:21	3
3029722	99	22	20,1	cyclictest	3190646	-21	munin-run	21:45:00	2
3029722	99	22	17,3	cyclictest	3164749	-21	kworker/u8:0+flush-259:0	21:45:17	2
3029715	99	22	18,2	cyclictest	3247775	-21	apt-get	22:40:12	1
3029713	99	22	18,3	cyclictest	3107521	-21	kworker/u8:0+flush-259:0	20:50:15	0
3029722	99	21	18,2	cyclictest	3300355	-21	kworker/u8:0+flush-259:0	23:50:25	2
3029715	99	21	18,2	cyclictest	3071295	-21	kworker/u8:4+events_unbound	20:30:18	1
3029715	99	21	17,3	cyclictest	3019701	-21	kworker/u8:2+flush-259:0	20:20:17	1
3029715	99	21	15,4	cyclictest	3289805	-21	latency_hist	23:20:00	1
3029713	99	21	17,3	cyclictest	3148984	-21	kworker/u8:1+events_unbound	21:29:16	0
3029713	99	21	16,4	cyclictest	335557	-21	systemd-journal	19:23:14	0
3029726	99	20	17,2	cyclictest	3180471	-21	kworker/u8:2+flush-259:0	22:25:23	3
3029726	99	20	14,4	cyclictest	3284203	-21	apt-get	23:15:00	3
3029722	99	20	16,3	cyclictest	3331832	-21	kworker/u8:4+flush-259:0	00:00:18	2
3029722	99	20	14,4	cyclictest	3206171	-21	latency_hist	22:00:01	2
3029715	99	20	4,9	cyclictest	3149245	-21	munin-run	21:05:00	1
3029713	99	20	15,4	cyclictest	3216564	-21	kworker/u8:1+events_unbound	22:54:15	0
3029713	99	20	14,4	cyclictest	3066304	-21	kworker/u8:0+events_unbound	19:45:18	0
3029726	99	19	15,3	cyclictest	3300355	-21	kworker/u8:0+flush-259:0	00:05:18	3
3029726	99	19	14,3	cyclictest	3242384	-21	kworker/u8:0+flush-259:0	22:50:00	3
3029722	99	19	14,3	cyclictest	3300837	-21	apt-get	23:30:13	2
3029715	99	19	15,3	cyclictest	3347153	-21	kworker/u8:1+flush-259:0	00:25:00	1
3029715	99	19	15,3	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:00:26	1
3029713	99	19	16,2	cyclictest	3195819	-21	kworker/u8:3+flush-259:0	22:05:16	0
3029713	99	19	15,3	cyclictest	3300355	-21	kworker/u8:0+events_unbound	00:10:00	0
3029713	99	19	15,3	cyclictest	3148984	-21	kworker/u8:1+events_unbound	21:23:15	0
3029713	99	19	15,3	cyclictest	3019701	-21	kworker/u8:2+events_unbound	19:53:14	0
3029713	99	19	15,2	cyclictest	3268649	-21	kworker/u8:2+flush-259:0	23:05:21	0
3029713	99	19	15,2	cyclictest	3144106	-21	sh	21:00:00	0
3029713	99	19	12,5	cyclictest	3300566	-21	latency_hist	23:30:00	0
3029726	99	18	14,3	cyclictest	3019701	-21	kworker/u8:2+events_unbound	19:35:15	3
3029726	99	18	12,4	cyclictest	335557	-21	systemd-journal	22:25:00	3
3029726	99	18	11,4	cyclictest	3336795	-21	latency_hist	00:05:00	3
3029715	99	18	7,1	cyclictest	0	-21	swapper/1	20:25:19	1
3029715	99	18	15,2	cyclictest	0	-21	swapper/1	23:14:59	1
3029715	99	18	13,3	cyclictest	3257841	-21	latency_hist	22:50:00	1
3029715	99	18	0,12	cyclictest	3123011	-21	idleruntime-cro	20:40:01	1
3029713	99	18	15,2	cyclictest	3232056	-21	kworker/u8:3+events_unbound	22:45:24	0
3029713	99	18	14,3	cyclictest	3148984	-21	kworker/u8:1+events_unbound	21:40:24	0
3029713	99	18	13,4	cyclictest	3300355	-21	kworker/u8:0+events_unbound	23:52:21	0
3029726	99	17	14,2	cyclictest	3301258	-21	irqcore	23:30:18	3
3029726	99	17	13,3	cyclictest	3107521	-21	kworker/u8:0+events_unbound	20:40:15	3
3029726	99	17	13,3	cyclictest	3071295	-21	kworker/u8:4+events_unbound	20:30:22	3
3029726	99	17	13,2	cyclictest	0	-21	swapper/3	22:10:19	3
3029722	99	17	14,2	cyclictest	3331832	-21	kworker/u8:4+flush-259:0	00:20:17	2
3029722	99	17	13,3	cyclictest	3148984	-21	kworker/u8:1+flush-259:0	21:15:24	2
3029715	99	17	13,3	cyclictest	2971	-21	cron	00:10:00	1
3029715	99	17	12,4	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:10:01	1
3029715	99	17	12,3	cyclictest	3066304	-21	kworker/u8:0+flush-259:0	19:45:25	1
3029715	99	17	11,4	cyclictest	335557	-21	systemd-journal	22:19:13	1
3029715	99	17	11,4	cyclictest	3305981	-21	/usr/sbin/munin	23:35:16	1
3029715	99	17	11,4	cyclictest	3164749	-21	kworker/u8:0+flush-259:0	21:45:00	1
3029713	99	17	14,2	cyclictest	3107521	-21	kworker/u8:0+events_unbound	21:08:16	0
3029713	99	17	13,3	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:15:26	0
3029713	99	17	13,3	cyclictest	3014400	-21	kworker/u8:1+events_unbound	19:25:15	0
3029726	99	16	14,1	cyclictest	3232056	-21	kworker/u8:3+events_unbound	22:55:15	3
3029726	99	16	14,1	cyclictest	3216564	-21	kworker/u8:1+events_unbound	22:50:14	3
3029726	99	16	13,2	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:05:25	3
3029726	99	16	13,2	cyclictest	3051100	-21	irqcore	19:30:17	3
3029726	99	16	12,3	cyclictest	3107521	-21	kworker/u8:0+flush-259:0	20:35:26	3
3029722	99	16	12,3	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:45:00	2
3029715	99	16	9,5	cyclictest	335557	-21	systemd-journal	21:00:00	1
3029713	99	16	14,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	21:00:26	0
3029713	99	16	12,3	cyclictest	603	50	irq/132-enp0s29f1:rx-0	21:30:14	0
3029713	99	16	12,3	cyclictest	603	50	irq/132-enp0s29f1:rx-0	20:25:12	0
3029713	99	16	12,3	cyclictest	3331832	-21	kworker/u8:4+flush-259:0	00:13:46	0
3029713	99	16	12,3	cyclictest	3180471	-21	kworker/u8:2+events_unbound	22:23:16	0
3029713	99	16	11,4	cyclictest	3300355	-21	kworker/u8:0+events_unbound	23:30:18	0
3029713	99	16	11,3	cyclictest	335557	-21	systemd-journal	23:23:15	0
3029713	99	16	10,4	cyclictest	335557	-21	systemd-journal	21:52:09	0
3029726	99	15	9,4	cyclictest	3101489	-21	ntpq	20:15:23	3
3029726	99	15	11,3	cyclictest	3232056	-21	kworker/u8:3+events_unbound	22:30:21	3
3029726	99	15	11,3	cyclictest	3138932	-21	kworker/u8:3+events_unbound	21:05:21	3
3029722	99	15	12,2	cyclictest	3138932	-21	kworker/u8:3+flush-259:0	21:20:26	2
3029722	99	15	11,3	cyclictest	3087097	-21	/usr/sbin/munin	20:05:20	2
3029722	99	15	11,3	cyclictest	3019701	-21	kworker/u8:2+flush-259:0	20:20:24	2
3029722	99	15	10,4	cyclictest	3295013	-21	apt-get	23:25:00	2
3029722	99	15	0,9	cyclictest	3200977	-21	munin-plugin-st	21:55:00	2
3029715	99	15	11,2	cyclictest	3129362	-21	irqcore	20:45:17	1
3029715	99	15	11,2	cyclictest	0	-21	swapper/1	19:30:00	1
3029715	99	15	10,3	cyclictest	3097432	-21	apt-get	20:15:13	1
3029713	99	15	13,2	cyclictest	603	50	irq/132-enp0s29f1:rx-0	20:07:58	0
3029713	99	15	13,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	19:30:17	0
3029713	99	15	12,2	cyclictest	3305764	-21	kworker/u8:1+events_unbound	23:35:19	0
3029713	99	15	11,3	cyclictest	3164749	-21	kworker/u8:0+events_unbound	21:45:13	0
3029713	99	15	11,3	cyclictest	3154624	-21	kworker/u8:2+flush-259:0	21:10:18	0
3029726	99	14	12,1	cyclictest	3180471	-21	kworker/u8:2+events_unbound	22:00:00	3
3029726	99	14	11,2	cyclictest	3274817	-21	irqcore	23:05:16	3
3029726	99	14	11,2	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:10:25	3
3029726	99	14	10,3	cyclictest	3148984	-21	kworker/u8:1+flush-259:0	21:50:28	3
3029726	99	14	10,3	cyclictest	3071295	-21	kworker/u8:4+flush-259:0	20:00:21	3
3029722	99	14	1,7	cyclictest	3226845	-21	basename	22:20:01	2
3029722	99	14	11,2	cyclictest	3086849	-21	idleruntime-cro	20:05:00	2
3029722	99	14	0,7	cyclictest	3060873	-21	munin-run	19:40:00	2
3029715	99	14	8,4	cyclictest	3362656	-21	latency_hist	00:30:01	1
3029715	99	14	7,5	cyclictest	335557	-21	systemd-journal	21:30:15	1
3029715	99	14	12,1	cyclictest	0	-21	swapper/1	23:25:01	1
3029715	99	14	10,3	cyclictest	3138932	-21	kworker/u8:3+flush-259:0	21:05:10	1
3029715	99	14	10,3	cyclictest	3128126	-21	sh	20:45:00	1
3029715	99	14	10,2	cyclictest	3305743	-21	sh	23:35:00	1
3029726	99	13	7,4	cyclictest	3295013	-21	apt-get	23:25:01	3
3029726	99	13	10,2	cyclictest	3343224	-21	kthreadcore	00:10:17	3
3029726	99	13	10,2	cyclictest	3242793	-21	fschecks_count	22:35:13	3
3029726	99	13	10,2	cyclictest	0	-21	swapper/3	00:35:01	3
3029722	99	13	10,2	cyclictest	3300355	-21	kworker/u8:0+flush-259:0	00:10:17	2
3029722	99	13	10,2	cyclictest	3232056	-21	kworker/u8:3+flush-259:0	22:45:24	2
3029722	99	13	10,2	cyclictest	3148984	-21	kworker/u8:1+flush-259:0	21:30:24	2
3029722	99	13	10,2	cyclictest	3138932	-21	kworker/u8:3+flush-259:0	21:10:24	2
3029722	99	13	0,12	cyclictest	3216509	-21	idleruntime-cro	22:10:00	2
3029715	99	13	9,3	cyclictest	3160037	-21	fschecks_time	21:15:16	1
3029715	99	13	9,2	cyclictest	0	-21	swapper/1	19:20:00	1
3029715	99	13	1,5	cyclictest	3138917	-21	munin-run	20:55:01	1
3029713	99	13	9,3	cyclictest	3222340	-21	kworker/u8:0+events_unbound	22:15:17	0
3029726	99	12	9,2	cyclictest	3107097	-21	unixbench_singl	20:20:25	3
3029726	99	12	9,2	cyclictest	3081673	-21	idleruntime-cro	20:00:01	3
3029726	99	12	8,3	cyclictest	3029694	-21	kworker/u8:3+flush-259:0	19:45:16	3
3029726	99	12	7,3	cyclictest	3326427	-21	cron	23:55:01	3
3029726	99	12	10,1	cyclictest	0	-21	swapper/3	20:55:00	3
3029722	99	12	9,2	cyclictest	3117857	-21	kworker/u8:1+flush-259:0	20:45:17	2
3029722	99	12	9,2	cyclictest	3115229	-21	sort	20:30:17	2
3029722	99	12	9,2	cyclictest	3019701	-21	kworker/u8:2+flush-259:0	19:15:16	2
3029722	99	12	8,3	cyclictest	3216564	-21	kworker/u8:1+flush-259:0	22:35:15	2
3029722	99	12	8,3	cyclictest	3019701	-21	kworker/u8:2+events_unbound	20:25:17	2
3029722	99	12	10,1	cyclictest	0	-21	swapper/2	21:10:01	2
3029722	99	12	0,6	cyclictest	3352294	-21	awk	00:20:01	2
3029722	99	12	0,1	cyclictest	3341950	-21	munin-run	00:10:01	2
3029715	99	12	9,2	cyclictest	3331832	-21	kworker/u8:4+flush-259:0	00:15:26	1
3029715	99	12	9,2	cyclictest	3232015	-21	cron	22:25:00	1
3029715	99	12	7,3	cyclictest	335557	-21	systemd-journal	22:40:00	1
3029715	99	12	1,7	cyclictest	3300571	-21	munin-run	23:29:59	1
3029713	99	12	10,1	cyclictest	603	50	irq/132-enp0s29f1:rx-0	19:55:02	0
3029726	99	11	9,1	cyclictest	3061544	-21	irqcore	19:40:17	3
3029722	99	11	8,2	cyclictest	3316530	-21	fschecks_count	23:45:14	2
3029722	99	11	6,3	cyclictest	1	-21	systemd	23:20:00	2
3029715	99	11	8,2	cyclictest	3191320	-21	cut	21:45:17	1
3029715	99	11	8,2	cyclictest	3170347	-21	fschecks_count	21:25:15	1
3029715	99	11	8,2	cyclictest	3040375	-21	cpuspeed_turbos	19:20:13	1
3029715	99	11	6,4	cyclictest	3331598	-21	latency_hist	00:00:00	1
3029726	99	10	8,1	cyclictest	3214194	-21	kthreadcore	22:05:19	3
3029726	99	10	8,1	cyclictest	0	-21	swapper/3	00:25:20	3
3029726	99	10	7,2	cyclictest	3268649	-21	kworker/u8:2+flush-259:0	23:00:24	3
3029726	99	10	7,2	cyclictest	3107521	-21	kworker/u8:0+flush-259:0	21:00:18	3
3029726	99	10	6,3	cyclictest	3311132	-21	/usr/sbin/munin	23:40:13	3
3029722	99	10	6,2	cyclictest	3065212	-21	ntpq	19:40:23	2
3029722	99	10	5,4	cyclictest	3280658	-21	cat	23:10:17	2
3029715	99	10	7,2	cyclictest	3201299	-21	cpuspeed_turbos	21:55:14	1
3029715	99	10	6,3	cyclictest	31	1	ktimers/1	23:40:09	1
3029715	99	10	0,2	cyclictest	3076492	-21	munin-run	19:55:00	1
3029722	99	9	7,1	cyclictest	0	-21	swapper/2	20:15:14	2
3029722	99	9	6,2	cyclictest	0	-21	swapper/2	00:00:00	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:34