Hello everybody

I am newbie and not very experience in servers, but I do hope that some of you can help me with my lionde.

IO usage gets very high at wired hours, when there are no users on the site. Usually after two days I have to reboot the server

When entering the site it’s very slow as well.

The site has been mail Mysql,apache2 , php,

jer@plato:~$ free -m
total used free shared buffers cached
Mem: 750 742 8 0 9 477
-/+ buffers/cache: 256 494
Swap: 511 27 484
jer@plato:~$ vmstat
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 12 28220 8572 9540 488472 0 0 231 195 151 95 3 1 32 63
jer@plato:~$ vmstat 1 10
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 12 28220 8292 9408 488856 0 0 231 195 151 95 3 1 33 63
0 12 28220 8164 9408 488996 0 0 5708 0 1066 796 0 0 56 44
0 12 28220 8252 9400 488960 0 0 4968 0 815 540 0 0 43 57
0 12 28220 8340 9400 488860 0 0 4956 0 902 576 0 0 56 44
0 12 28220 8256 9400 488916 0 0 6592 968 1142 827 0 0 52 48
0 12 28220 8308 9400 488836 0 0 3920 0 668 527 0 0 48 52
0 12 28220 8280 9400 488740 0 0 4864 0 877 672 0 0 43 57
0 12 28220 8252 9400 488968 0 0 4820 0 850 650 0 0 56 44
0 12 28220 8292 9400 488932 0 0 5548 0 1019 725 0 0 43 57
0 12 28220 8228 9408 489060 0 0 5812 12 959 721 0 0 56 44

Thanks