That's right, I came from the Microsoft world
Below, the status of the "Top" command on one of our servers that has not been restarted for several days, the memory is almost 100% used,
(server all in one with 64 Go of RAM )
With this state, I receive complaints of slowness, if I initialize the vicidial services and also restart MYSQL and apache, memory usage remains high,
Only a restart of the server frees up the memory.
What I have learned from your answer is that restarting is not necessary every day, but once a week will be enough.
Finally a big thank for you.
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Tasks: 338 total, 1 running, 337 sleeping, 0 stopped, 0 zombie
%Cpu(s): 1,0 us, 0,5 sy, 0,0 ni, 98,4 id, 0,1 wa, 0,0 hi, 0,0 si, 0,0 st
GiB Mem: 62,922 total, 62,639 used, 0,284 free, 0,208 buffers
GiB Swap: 63,873 total, 0,002 used, 63,871 free. 57,822 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1348 mysql 20 0 2595912 104848 6480 S 16,6 0,2 2424:53 mysqld
2595 root 20 0 12,038g 49328 10292 S 7,6 0,1 3086:27 asterisk
14083 root 20 0 0 0 0 S 6,3 0,0 0:17.78 kworker/0:2
15009 root 20 0 118136 9808 5452 S 2,0 0,0 0:00.06 AST_manager_kil
15006 root 20 0 122452 10016 5612 S 1,7 0,0 0:00.05 AST_CRON_audio_
4848 root 20 0 170360 58432 5968 S 1,3 0,1 7:06.17 AST_VDadapt.pl
11849 www-data 20 0 302040 21800 15712 S 1,3 0,0 0:09.77 php5-fpm
17987 www-data 20 0 2012836 10852 3208 S 1,0 0,0 1:34.01 apache2
2699 root 20 0 132896 14988 6124 S 0,7 0,0 493:13.93 AST_update.pl
2702 root 20 0 123564 11708 6016 S 0,7 0,0 591:26.87 AST_manager_sen
5610 www-data 20 0 2011132 7752 3208 S 0,7 0,0 0:31.95 apache2
10948 root 20 0 23796 3116 2420 R 0,7 0,0 0:04.69 top
11858 www-data 20 0 302000 20956 14944 S 0,7 0,0 0:09.47 php5-fpm
12598 www-data 20 0 302104 20668 14628 S 0,7 0,0 0:07.23 php5-fpm
3 root 20 0 0 0 0 S 0,3 0,0 167:47.94 ksoftirqd/0
8 root 20 0 0 0 0 S 0,3 0,0 149:07.99 rcu_preempt
76 root 20 0 0 0 0 S 0,3 0,0 0:59.04 ksoftirqd/13
398 root 20 0 41160 14464 14172 S 0,3 0,0 14:57.57 systemd-journal
791 root 20 0 27508 2776 2492 S 0,3 0,0 3:11.14 cron
2502 root 20 0 443660 331684 5936 S 0,3 0,5 271:09.15 AST_VDauto_dial
5612 www-data 20 0 2011656 9252 3204 S 0,3 0,0 0:47.70 apache2
1 root 20 0 28664 4392 2800 S 0,0 0,0 6:10.83 systemd